НОВЫЙ СПОСОБ ПОЛУЧЕНИЯ МИКРОКАПСУЛИРОВАННЫХ ПРЕПАРАТОВ

Изобретение относится к способу капсулирования пестицида. Способ включает (a) объединение в воде от около 5 до около 60 мас.% частиц пестицида и от около 5 до 20 мас.% первого агента капсулирования, представляющего собой амид-аммонийную соль сополимера стирола и малеинового ангидрида; (b) добавление соли кальция и кислоты для преобразования первого агента капсулирования в капсулирующий полимер путем изменения рН воды для осаждения полимера с получением посредством этого капсулированных частиц пестицида; (c) взаимодействие капсулирующего полимера с солью кальция при нагревании до температуры выше чем примерно 40°С; (d) объединение капсулированных частиц со стадии (с) с вторым агентом капсулирования, выбранным из группы, состоящей из сополимеров формальдегида, полиизоцианатов, полиакриламидов и феноксисмол; и (e) нагревание полученной комбинации до температуры выше чем примерно 40°С для отверждения второго агента капсулирования. Также изобретение относится к способу капсулирования пестицида ...

МИКРОКАПСУЛИРОВАННАЯ ГЕРБИЦИДНАЯ КОМПОЗИЦИЯ И СПОСОБ ЕЕ ПОЛУЧЕНИЯ

Назначение: химические средства защиты растений, микрокапсулированная композиция ацетохлора в капсулах с оболочкой из продукта самоконденсации форполимера аминосмолы. Сущность: микрокапсула с оболочкой из продукта самоконденсации феррополимера формальдегида и мочевины или меламина, предпочтительно этерифицированного н-бутанолом или изобутанолом, возможно, модифицированная, содержащая в качестве активного агента ацетохлор и, возможно, приемлемый антидот. Содержание оболочки - 6 - 14 мас.% от массы ацетохлора. Способ получения композиции состоит в диспергировании раствора форполимера, указанного выше, в ацетохлоре, в водной среде, содержащей ПАВ, подкислении полученной эмульсии до рН 0 - 4 при одновременном нагревании до 50oС до завершения конденсации и охлаждении дисперсии при повышении рН до 7,0. 2 с. и 7 з.п.ф-лы, 2 табл.

СПОСОБ ПОЛУЧЕНИЯ ПОЛЫХ КРЕМНЕЗЕМНЫХ НАНОКАПСУЛ

Изобретение относится к получению нанокапсул, которые могут использоваться для контролируемого высвобождения разнообразных инкапсулированных агентов. Предложен способ получения полых кремнеземных нанокапсул. При перемешивании готовят водную эмульсию, содержащую дисперсную фазу, выбранную из толуола, гексана или октаметилциклотетрасилоксана, в перемешиваемую эмульсию вводят раствор силиказоля в органическом растворителе, выбранном из тетрагидрофурана, моноглима, ацетонитрила, этилацетата или ацетона, до поликонденсации силиказоля. Образовавшийся осадок выделяют и высушивают. Изобретение позволяет получить нанокапсулы при комнатной температуре в нейтральной среде за период времени до 5 минут. 1 ил., 1 табл., 6 пр.

Способ получения полисахаридсодержащих полимерных матриц

Изобретение относится к области химико-фармацевтической промышленности, а именно к способу получения полисахаридсодержащих полимерных матриц, согласно которому смешивают в объемных соотношениях 2:1:2 30% раствор акриламида в 1% растворе метиленбисакриламида, трис-буфер с рН=7,7 и 1-2% водный раствор полисахарида, затем полученный раствор добавляют по каплям к н-гексану, перемешивают со скоростью 500 об/мин в течение 1-2 мин, для начала полимеризации добавляют 10% раствор персульфата аммония, перемешивают 30 мин, добавляют эмульгатор сорбитан моноолеата, продолжая перемешивание в течение 15 мин, затем н-гексан отгоняют на роторном испарителе, полученные матрицы распределяют на фильтровальной бумаге, высушивают, выдерживают в холодильнике 48 часов при температуре 4-8°С, промывают хлороформом, выдерживают в эксикаторе при 4°С в течение 100-120 ч, при этом в качестве указанного раствора полисахарида используют либо водный раствор фукоидана, полученного фракционной экстракцией из бурой водоросли ...

АГРОХИМИЧЕСКАЯ КОМПОЗИЦИЯ, СПОСОБ ЕЕ ПОЛУЧЕНИЯ И ПРИМЕНЕНИЯ

Способ получения заполненных микрокапсул

HERSTELLUNG VON MIKROKAPSELN UND DEREN VERWENDUNG IN AUFZEICHNUNGSBLAETTERN.

SELBSTHEILENDE POLYURETHAN NANO-MIKROKAPSELN FÜR AUTOMOBILLACKIERUNG

Ein selbstheilendes Lack- und Schutzbeschichtungssystem enthält eine Vielzahl von Mikrokapseln, die in eine Schutzschicht eingebettet sind, die auf eine Platte aufgebracht wird. Jede der Vielzahl von Mikrokapseln beinhaltet eine Zielsubstanz und eine Polymermaterialumhüllung, die die Zielsubstanz einkapselt. Bei Aktivierung von mindestens einer der Vielzahl von Mikrokapseln, die durch einen mechanischen Bruch der Polymermaterialumhüllung auftritt, wird die Zielsubstanz freigesetzt.

Mikrokapseln und Verfahren zu ihrer Herstellung

VERFAHREN ZUR HERSTELLUNG VON MIKROKAPSELN

COATED MICROPARTICLE AGGLOMERATES

PROCESS OF MICROCAPSULES

Microcapsules and method of producing them

Microcapsules each composed of a solid or liquid particle enclosed within an aminoplast polymer shell are produced by dispersing the nucleus material in an aqueous medium containing aminoplast polymer precursors and causing the precursors to polymerize whereby aminoplast shells form around the particles. Specified precursors are compounds containing methylol groups which are capable of polymerization with urea in aqueous media, e.g. formaldehyde, paraformaldehyde and hexamethylenetetramine together with a urea, e.g. urea, thiourea, melamine, guanidine and N-alkyl ureas; mono- and di-methylolurea, water soluble, low-molecular weight urea-formaldehyde polymers of mono- and di-methylol urea, urea or formaldehyde. The resins may optionally contain nitrogenous modifiers, e.g. sulphonamides, anilines and amines and polymerization may be induced by an acid catalyst. Numerous materials are stated to be capable of encapsulation by the process of the invention and specific examples relate to the ...

Microencapsulated drag reducing agents

Floor treatment compositions

PRODUCTION OF MICROCAPSULES

... 1475128 3,9 - Bis - (aminoalkyl) - 2,4,8,10- tetraoxaspiro(5,5)undecanes FUJI PHOTO FILM CO Ltd 28 May 1974 [28 May 1973] 23672/74 Heading C2C [Also in Division B8] Heterocyclic diamines having the formula wherein R1 and R1 each represents H or a C 1 -C 4 alkyl group, and R2 and R2' each represents a C 1 -C 7 straight or branched chain alkylene group, or an addition product or a condensation product thereof are prepared by known methods via the corresponding cyanoalkyl derivatives.

METHOD OF PRODUCING MINUTE POLYMERIC CAPSULES

PROCESS FOR MICROENCAPSULATION OF METALLOCENES

METHOD OF MAKING MICROCAPSULES

Microcapsules containing suspensions of biologically active compounds and ultraviolet protectant.

Microcapsules containing a biologically active material which is sensitive to ultraviolet light are prepared which contain an ultraviolet light processer selected from lithum dioxide zinc oxide and mixtures thereof suspended and thoroughly dispersed in a liquid ...

Microcapsules containing suspensions of biologically active compounds and ultraviolet protectant

Microcapsules containing suspensions of biologically active compounds and ultraviolet protectant

Microcapsules containing suspensions of biologically active compounds and ultraviolet protectant

MICROENCAPSULATION OF BIOCIDES AND ANITFOULINGMITTELN

CASING PROCEDURE AND TOTALLY ENCLOSED COMPOSITIONS

VERFAHREN ZUM HERSTELLEN KLEINER POLYMERKAPSELN

PROCEDURE FOR THE PRODUCTION OF MICRO CAPS

PROCEDURE FOR A PACKAGING OF IN ONE FLUSSIGKEIT FINE DISTRIBUTED SUBSTANCES AFTER THE SPRUHTROCKNUNGSVERFAHREN

MICRO CAPS AND PROCEDURES FOR THE MICROENCAPSULATION

BIOLOGICAL MICROENCAPSULATED ACTIVE ACTIVE SUBSTANCES CONTAINING A WATER-SOLUBLE OR A WATER-DISPERSE-CASH COMB POLYMER

PROCEDURE FOR THE PRODUCTION OF MICRO CAPS WITH WATER-SOLUBLE SUBSTANCES AN ABSTENTION CAP CORE

GESCHLOSSENPORIGE HALBZEUGE UND FORMSTOFFE

PROCEDURE FOR THE CONTINUOUS PRODUCTION OF MICRO CAPS.

MAGNETIZABLE NUCLEAR BOWL MICROSPHERES, CONSISTING OF INTERLACED ONE ORGANOPOLYSILOXAN, PROCEDURES FOR YOUR PRODUCTION AND YOUR USE IN BIOLOGY.

PROCEDURE FOR THE FORMATION OF MICRO CAPS OR MICRO MATRIX BODIES.

SCHLELFGEGENSTAND FOR CLEANING PURPOSES WITH PARFÜMIERTEN SHARPENING FIBERS

PROCEDURE FOR A PACKAGING OF SUBSTANCE DISTRIBUTED IN A LIQUID FINE

Clamping means and procedure for the production of a coat or a supplement material for the clamping means

MICRO CAPS CONTAINING SUSPENSIONS BIOLOGICAL OF ACTIVE CONNECTIONS AND UV PROTECTION

MICRO PARTICLE MADE OF CYCLOOLEFINCOPOLYMEREN AND THEIR USE TO THE CONTROLLED ACTIVE SUBSTANCE RELEASE

MICRO CAPS WITH VARIABLE RELEASE

MAKING MICROCAPSULES

Method for preparing biodegradable microcapsules and microcapsules obtained in this manner

Method for manufacturing microcapsules enclosing a substance referred to as the active substance, in which method: there are provided an aqueous solution of a surfactant, an oily phase comprising the active substance and at least a first monomer X, and a polar phase comprising at least a second monomer Y; an O/W emulsion is prepared by adding the oily phase to the aqueous solution of the surfactant; the polar phase is added to the O/W emulsion in order to obtain a polymer by polymerisation of the X and Y monomers; starting from this reaction mixture, the microcapsules are isolated and comprise a wall which is formed by the polymer and which encloses the active substance; the method being characterised in that the polymer is a poly(beta-amino ester).

MANUFACTURING MICROCAPSULES

Continuous multi-microencapsulation process for improving the stability and storage life of biologically active ingredients

Microscapsule powder

MAKING MICROCAPSULES

COSMETIC COMPOSITIONS CONTAINING POLYMER-THICKENED OIL MICROCAPSULES

A PROCESS FOR MANUFACTURING MICROCAPSULES

Urea/Dialdehyde microcapsules for pesticidal formulations and a process for their preparation

Compositions containing perfume

PROCESS FOR PRODUCING MICROCAPSULES

PROCESS FOR PRODUCING MICROCAPSULES

MICROENCAPSULATED CATALYST, METHODS OF PREPARATION AND METHODS OF USE THEREOF

A microencapsulated catalyst is prepared by dissolving or dispersing a catalyst in a first phase (for example an organic phase), dispersing the first phase in a second, continuous phase (for example an aqueous phase) to form an emulsion, reacting one or more microcapsule wall-forming materials at the interface between the dispersed first phase and the continuous second phase to form a microcapsule polymer shell encapsulating the dispersed first phase core and optionally recovering the microcapsules from the continuous phase. The catalyst is preferably a transition metal catalyst and the encapsulated catalyst may be used for conventional catalysed reactions. The encapsulated catalyst may recovered from the reaction medium and re-cycled.

MICROENCAPSULATED AGRICULTURAL CHEMICAL AND PROCESS OF PREPARATION THEREOF

TITLE OF THE INVENTION: MICROENCAPSULATED AGRICULTURAL CHEMICAL AND PROCESS OF PREPARATION THEREOF A microencapsulated agricultural chemical comprises an agricultural chemical as an active ingredient having a solubility of not more than 1 g in 100 ml of water at 20 .degree.C and vapor pressure of not more than 760 mmHg at 60 .degree.C and a microcapsule wall enclosing the agricultural chemical therein and the microcapsule wall comprises a water-soluble cationic urea resin and at least one of prepolymer composed of formaldehyde and at least one compound selected from the group consisting of urea, melamine and thiourea. The microcapsule is prepared by dispersing the agricultural chemical in an aqueous medium containing the water-soluble cationic urea resin, an anionic surfactant and at least one of the prepolymer and maintaining pH of the obtained dispersion within an acidic range to polycondense the water-soluble cationic urea resin and at least one of the prepolymer.

SYNTHETIC ORGANIC PIGMENTS, METHOD FOR THEIR PRODUCTION AND SYSTEMS EMPLOYING SAME

PRODUCTION OF DUAL WALLED MICROCAPSULES BY REDUCING PH TO POLYMERIZE AMINOALDEHYDE PRECONDENSATE

TITLE OF THE INVENTION DUAL-WALLED MICROCAPSULES AND METHOD FOR PRODUCING THE SAME INVENTOR GEORGE E. MAALOUF Disclosed is a process for preparing improved dualwalled microcapsules which are useful in connection with carbonless copying systems. Also disclosed are the dual-walled microcapsules themselves which comprise minute discrete droplets of liquid fill material including an initially colorless chemically reactive color forming dye precursor and a carrier therefor encapsulated within individual, rupturable, generally continuous shells. The shells comprise inner and outer polycondensate layers. The process comprises the step of catalyzing the reactions whereby the outer shell is formed with the by-products of the reaction by which the inner shell is formed.

PREPARATION OF MICROCAPSULES USING DISPERSED POLYMER AS OUTER SHELL

A PROCESS FOR PREPARING AN AQUEOUS DISPERSION OF MICROPARTICLES

The present invention relates to a process for preparing an aqueous dispersion of microparticles containing a water-insoluble, solid, non-polymeric, organic active or functional material (M) and an aminoplast resin (A) which surrounds or embeds material (M), which comprises the following steps: i) providing an aqueous slurry of the material (M) in the form of coarse particles; ii) subjecting the aqueous slurry to shear forces such that the coarse particles of the material (M) are comminuted and an aqueous suspension of fine particles of the material (M) is obtained; iii) performing a polycondensation of an aminoplast pre-condensate during step (ii) or in the aqueous suspension of the fine particles of the material (M) obtained in step (ii); wherein step (ii) is performed in the presence of at least one protective colloid and in the presence of at least a portion of the aminoplast pre-condensate subjected to the polycondensation of step (iii).

ENCAPSULATES

The invention discloses a microencapsulated phase change material having a specific Thermal Efficiency Index (TEI). TEl = a(R?T) * ß(R?H) * y(RMP) * d(RTGAP180) * e(RFW). The problem of achieving effective and efficient microencapsulated phase change material can be solved to yield a commercially useful material having the described combination of physical and chemical characteristics based on the parameters described in the specification. Microcapsules according to the invention are highly effective at delivering enhanced thermal performance as compared to conventional microcapsules.

PROCESS TO PREPARE MICROENCAPSULATED FORMULATIONS

Provided is a method of encapsulating a chemical agent comprising: a) combining particles of a chemical agent and an encapsulation effective amount of a first encapsulating agent in an aqueous solvent and b), converting the first encapsulating agent to a polymer to form encapsulated particles of the chemical agent.

CONTINUOUS MULTI-MICROENCAPSULATION PROCESS FOR IMPROVING THE STABILITY AND STORAGE LIFE OF BIOLOGICALLY ACTIVE INGREDIENTS

... ²²²The present invention relates to microcapsules and a continuous micro-²encapsulation water-in-oil-in-water microencapsulation process through in situ ²and interfacial polymerisation of the emulsion. The formulation comprises a ²continuous water phase having a dispersion of microcapsules which contain oil ²drops and wherein the inside of each oil phase drop - containing optionally ²oil-soluble materials - there is a dispersion of water, or aqueous extract or ²water dispersible material or water soluble material. The oil drops are ²encapsulated with a polymerisable material of natural origin. Such ²microcapsules are appropriated for spray-dry process, to be used as dry ²powder, lyophilised, self-emulsiable powder, gel, cream and any liquid form. ²The active compounds included in the microcapsules are beneficial to the ²health and other biological purposes. Such formulations are appropriate to be ²incorporated in any class of food, specially for the production of ²nutraceuticals, as well ...

SMALL SCALE MICROENCAPSULATED PIGMENTS AND USES THEREOF

Encapsulated thermochromic pigments having an ave diameter from 3 to 5 microns may be poorly suited for use as a metal decoration ink for high speed application to a metal can, as problems can arise in the ink rheology with this relatively large particle size which may lead to misting as the ink is transferred at very high speeds. The method for making encapsulated thermochromic pigments provided herein can produce particles with sub-micron dimensions, whereby the method incorporates an anionic surfactant and a deflocculant to provide a dewatered slurry containing the encapsulated thermochromic pigments, which can then be used to make inks that show considerably less misting and better transfer to metal cans at high production line speeds, such as speeds exceeding 1000, 1500, or 2000 cans per minute. Additionally, these encapsulated thermochromic pigments can be used in ink jet printing applications.

PESTICIDAL FORMULATIONS

PH/5-18783/A Pesticidal formulations The invention relates to a novel formulation of per se known pesticides in the form of microcapsules, to a process for the preparation of microcapsules and to the use of said microcapsules for controlling weeds, plant diseases, insects and representatives of the order Acarina.

PREPARATION OF DISCRETE MICRODROPLETS OF AN OIL IN WATER STABILIZED BY IN SITU POLYMERIZATION OF A WATER-SOLUBLE VINYL MONOMER

What is provided herein is a method for preparing a product which comprises discrete microdroplets of an oil in water stabilized by in situ polymerization of a water-soluble vinyl monomer. The method comprises dispersing the oil in water, option- ally with a surfactant, adding the water-soluble vinyl monomer, preferably vinylpyrrolidone, optionally with a comonomer, and polymerizing the monomer or comonomers in situ such that the oil is stabiliz ed in the resulting polymer solution as discrete mic- rodroplets. The product is used in conditioning hair care compositions and hair and skin care compositions, including those con- taining a water-soluble acryl comonomer.

PHARMACEUTICAL COMPOSITIONS CONTAINING NANOCAPSULES

A pharmaceutical composition in the form of a colloidal suspension of nanocapsules, comprising an oily phase consisting essentially of an oil containing dissolved therein a surfactant and suspended therein a plurality of nanocapsules having a diameter of less than 500 nanometers, said nanocapsules encapsulating an aqueous phase consisting essentially of a solution or a suspension of a therapeutically active substance, a surfactant and optionally ethanol; a process for preparing the said composition is also described. The walls of said nanocapsules are formed from a poly(alkyl 2-cyanoacrylate) wherein the alkyl radical has 1 to 6 carbon atoms. This composition is particularly suitable for oral administration of polypeptides and polysaccharides.

PHARMACEUTICAL COMPOSITIONS CONTAINING NANOCAPSULES

A pharmaceutical composition in the form of a colloidal suspension of nanocapsules, comprising an oily phase consisting essentially of an oil containing dissolved therein a surfactant and suspended therein a plurality of nanocapsules having a diameter of less than 500 nanometers, said nanocapsules encapsulating an aqueous phase consisting essentially of a solution or a suspension of a therapeutically active substance, a surfactant and optionally ethanol; a process for preparing the said composition is also described. The walls of said nanocapsules are formed from a poly(alkyl 2-cyanoacrylate) wherein the alkyl radical has 1 to 6 carbon atoms. This composition is particularly suitable for oral administration of polypeptides and polysaccharides.

MICROCAPSULES CONTAINING SUSPENSIONS OF BIOLOGICALLY ACTIVE COMPOUNDS AND ULTRAVIOLET PROTECTANT

Microcapsules containing a biologically active material which is sensitive t o ultraviolet light are prepared which contain a!n ultraviolet light protectant selected from titanium dioxide, zinc oxide and mixtures thereof, suspended and thoroughly dispersed in a liquid.

COMPOSITIONS CONTAINING PERFUME

Perfume is absorbed within organic polymer particles which have a further polymer at their exterior. The further polymer incorporates free hydroxyl groups and serves to promote deposition of the particles from a wash or rinse liquor. The further polymer may be part of an encapsulating shell, but more conveniently is used as a stabiliser during polymerisation of the particles. Highly hydrolysed polyvinyl alcohol is preferred.

PARTICLES CONTAINING ABSORBED LIQUIDS AND METHODS OF MAKING THEM

Perfume is absorbed within organic polymer particles which have a further polymer at their exterior. The further polymer incorporates free hydroxyl groups and serves to promote deposition of the particles from a wash or rinse liquor. The further polymer may be part of an encapsulating shell, but more conveniently is used as a stabiliser during polymerisation of the particles. Highly hydrolysed polyvinyl alcohol is preferred.

LOW-FORMALDEHYDE DISPERSION OF MICROCAPSULES OF MELAMINE-FORMALDEHYDE RESINS

A process for the preparation of microcapsules by the condensation of melamine-formaldehyde resins and/or the methyl ethers thereof in water, in which the substantially water-insoluble material forming the eo=e of the capsule is dispersed, in the presence of an anionic protective colloid at pH's of from 3 to 6.5 by the formation of the microcapsules at temperatures of from 20.degree. to 50.degree.C followed by curing of the shell of the capsules at from >50.degree. to 100.degree.C, in which, prior to curing, from 10 to 200 wt% of urea, whose amino groups are optionally linked to an ethylene or propylene bridge, based on the melamine-formaldehyde resin are added, the microcapsules produced by this process and also the use thereof in a pressure-sensitive recording system.

Procédé d'encapsulation de matières hydrophobes

Verfahren zur Einkapselung von in einer Flüssigkeit fein verteilter Substanz

VERFAHREN ZUR EINKAPSELUNG VON IN EINER FLUESSIGKEIT FEIN VERTEILTER SUBSTANZ.

VERFAHREN ZUR EINKAPSELUNG VON IN EINER FLUESSIGKEIT FEIN VERTEILTEN SUBSTANZEN NACH DEM SPRUEHTROCKNUNGSVERFAHREN.

KLEINE KAPSELN UND VERFAHREN ZU IHRER HERSTELLUNG.

Durch Druck selbstmarkierbares Flächengebilde

Biegsame Flächengebilde

Kapseln und Verfahren zu ihrer Herstellung

Mechanisches Befestigungsmittel

PROCEDURE FOR THE PRODUCTION OF SMALL POLYMER CAPS.

ENCAPSULATION PROCEDURE FOR THE PRODUCTION OF MICRO CAPS.

Double-walled microcapsules with liquid filling material and process for preparing them

PROCEDURE FOR THE PRODUCTION OF A LIQUID FUELLMATERIAL CONTAINING MICRO CAPS.

Process for manufacturing small polymer capsules

PROCEDURE FOR MANUFACTURING SMALL POLYMER CAPS.

PROCEDURE FOR THE PRODUCTION OF A MIXING INTO A PASTE WITH OF MICRO CAPS.

MICROCAPSULES CONTAINING SUSPENSIONS OF BIOLOGICALLY ACTIVE COMPOUNDS AND ULTRAVIOLET PROTECTANT

Liquid crystal display device including liquid crystal capsule and method of fabricating the same

MANUFACTURE OF MICROCAPSULES, IN PARTICULAR FOR PAPER TO BE COPIED

"CORE-SHELL STRUCTURE" MICROSPHERE-BASED CROSSLINKED ORGANOPOLYSILOXANE ELASTOMERS, PROCESS FOR THEIR PREPARATION AND THEIR APPLICATION IN BIOLOGY.

PROCESS OF PRODUCTION OF MICROCAPSULES

CHILD RESISTANT SILICA BEADS, PREPARATION METHOD, USE AS BIOCATALYSTS, BIOCATALYSIS METHOD UTILIZING SAID BALLS WORK, OTHER USES

L'invention concerne une bille alvéolaire de silice comprenant un cœur contenant une mousse de silice à porosité hiérarchisée et des microorganismes dotés d'une activité catalytique (e.g. bactéries) dispersés dans ladite mousse, et une enveloppe poreuse solide de silice entourant ledit cœur, son procédé de préparation, l'utilisation de ladite bille comme biocatalyseur hétérogène, un procédé de biocatalyse mettant en œuvre ladite au moins une bille, un système catalytique comprenant des billes ayant des microorganismes différents, et les utilisations de ladite bille pour la production d'énergie, la réduction de contaminants et la production de protéines recombinantes.

PROCESS FOR ENCAPSULATING OR COATING FINELY DIVIDED MATERIALS BY SPRAY-DRYING-INDUCED POLYMERISATION

NANOPARTICULE HETERONUCLEAIRE OF RADIOISOTOPE HAS STRUCTURE NOYAU-COQUE AND ITS METHOD OF PREPARATION.

L'invention concerne une nanoparticule hétéronucléaire de radio-isotope à structure noyau-coque et son procédé de préparation. La nanoparticule hétéronucléaire de radio-isotope à structure noyau-coque comprend : un noyau contenant deux radio-isotopes différents choisis parmi198Au,63Ni,110mAg,64Cu,60Co,192Ir et103Pd ; et une coque de SiO2 entourant le noyau. La nanoparticule hétéronucléaire de radio-isotope à structure noyau-coque peut être utilisée comme traceur pour détecter une variation de rapport volumique ou pour évaluer les caractéristiques du comportement d'une ressource en eau, sur la base d'informations concernant le rapport de phase dans l'écoulement d'un fluide à plusieurs phases existant dans un procédé qui est mis en œuvre dans des conditions extrêmes telles qu'une température élevée et/ou une pression élevée.

Photo-stabilization of butyl-methoxy-dibenzoyl methane, for use in cosmetic compositions for solar protection, involves association with phenyl or preferably benzyl salicylate

Procédés de : solubilisation du 4 (ter. butyl) 4'méthoxy dibenzoylméthane et de photostabilisation du 4 (ter. butyl) 4'méthoxy dibenzoylméthane vis-à-vis des rayonnements ultraviolets, caractérisé par le fait qu'ils consistent à associer au 4 (ter. butyl) 4'méthoxy dibenzoylméthane une quantité efficace de salicylate de phényle et plus particulièrement de salicylate de benzyle.

PROCESS FOR MANUFACTURING MINUTE POLYMERIC CAPSULES

PROCESS OF PRODUCTION OF MICROCAPSULES, MICROCAPSULES OBTAINED BY THIS PROCESS AND BREAKS INTO LEAF OF COPYING SENSITIVE TO THE PRESSURE INCLUDING/UNDERSTANDING THEM

Delivery of Herbicidal Actives From Highly Charged Microcapsules

This invention relates to a method for forming hollow silica-based particles suitable for containing one or more herbicidal active ingredients. In the method for forming the herbicidal composition, an emulsion is prepared wherein the emulsion includes a continuous phase that is polar or non-polar, and a dispersed phase comprising droplets including (i) a polar herbicidal active ingredient when the continuous phase is non-polar or (ii) a non-polar herbicidal active ingredient when the continuous phase is polar. A silica precursor is added to the emulsion such that the silica precursor can be emulsion templated on the droplets to form hollow silica-based particles that encapsulate the herbicidal active ingredient,

Water-Dispersible Oral, Parenteral, and Topical Formulations for Poorly Water Soluble Drugs Using Smart Polymeric

Polymeric nanoparticles with a hydrophobic core and a hydrophilic shell are formed from: 1) N-isopropylacrylamide (NIPAAM), at a molar ratio of about 50% to about 90%, and preferably 60% for specific delivery routes such as oral or parenteral; either water-soluble vinyl derivatives like vinylpryolidone (VP) or vinyl acetate (VA), or water insoluble vinyl derivaties like methyl methacrylate (MMA) or styrene (ST), at a molar ratio of about 10% to about 30%; and acrylic acid (AA), at a molar ration of about 10% to about 30%.

PROCESS FOR MANUFACTURING POLYSILOXANE MICROCAPSULES THAT ARE FUNCTIONALIZED AND ARE NOT VERY POROUS

A method is provided for encapsulating products that can have lipophilic or hydrophilic, including volatile, properties in a polysiloxane membrane that is particularly impervious. A method is also provided for evaluating the imperviousness of capsules. The present method includes the following steps: 1. A method for encapsulating one or more products that can have lipophilic or hydrophilic properties in a polysiloxane membrane , comprising the following steps:a) formation of droplets by an emulsion between an oily phase containing the product to be encapsulated and an acidic aqueous phase heated between 40° C. and 70° C., and in the presence of surfactants;b) addition and hydrolysis of at least one silane in order to obtain a silanol;c) increasing the pH in order to start condensation of the silanol to form a first membrane around the droplets of the product to be encapsulated;d) lowering the pH; ande) increasing the pH in order to obtain new or better condensation of the silanol around the droplets of the product to be encapsulated.2. The method according to claim 1 , characterized in that step e) further comprises the addition of at least one silane.3. The method according to claim 1 , characterized in that at least one silane added during step e) is a silane different from the silane or silanes added during step b) claim 1 , thus forming a second membrane around the droplets of the product to be encapsulated during the new condensation of silanol during step e).5. The The method according to any one of the claim 1 , characterized in that one or more silanes used in step b) claim 1 , or step e) claim 1 , or both claim 1 , is selected from the following substances:(3-(trimethoxysilyl)propyl)diethylenetriamine, (3-chloropropyl)triethoxysilane,1-[3-(trimethoxysilyl)]-propylurea,3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane,3-aminopropyldiethoxymethylsilane, 3-aminopropylmethyldiethoxysilane,3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane,3- ...

MICROCAPSULES

The present invention concerns microcapsules comprising a capsule core and a capsule wall, the capsule wall being constructed from 1. Microcapsules comprising a capsule core and a capsule wall , wherein the capsule wall is formed from at least one polymer comprising:{'sub': 1', '24, '(A) 30% to 90% by weight of one or more C-C-alkyl esters of acrylic and/or methacrylic acid, acrylic acid, and/or methacrylic acid and/or maleic acid as monomer I,'}(B) 10% to 70% by weight of a mixture of divinyl and polyvinyl monomers as monomer II, wherein a fraction of the polyvinyl monomers is in the range from 2% to 90% by weight based on the monomers II, and(C) 0% to 30% by weight of one or more additional monomers other than monomers I and II, as monomer III,wherein the weight percent of (A), (B), and (C) is based on the total weight of the monomers, andwherein the capsule core comprises a lipophilic substance which comprises a biocide.2. The microcapsules according to claim 1 , which have an average particle size of 1.5-2.5 μm and 90% of the particles have a particle size ≦4 μm.3. The microcapsules according to claim 1 , wherein the fraction of the polyvinyl monomers is in the range from 5% to 80% by weight based on the sum total of divinyl and polyvinyl monomers.4. The microcapsules according to claim 2 , wherein the fraction of the polyvinyl monomers is in the range from 5% to 80% by weight based on the sum total of divinyl and polyvinyl monomers.5. The microcapsule according to claim 1 , wherein the polyvinyl monomer is at least one monomer selected from the group consisting of trimethylolpropane triacrylate claim 1 , trimethylolpropane trimethacrylate claim 1 , pentaerythritol triallyl ether claim 1 , pentaerythritol tetraallyl ether claim 1 , pentaerythritol triacrylate claim 1 , and pentaerythritol tetraacrylate.6. The microcapsule according to claim 1 , wherein additionally polyelectrolytes having an average molecular weight in the range from 500 g/mol to 10 million g/ ...

HOLLOW PARTICLES, METHOD FOR PRODUCING SAME, AND USAGE OF SAME

This invention provides hollow particles having a shell containing at least one layer and having an average particle diameter of 10 to 150 nm, wherein a ratio β between absorbance at 908 cm(A908) and absorbance at 1722 cm(A1722) in an infrared absorption spectrum obtained by measuring the hollow particles by ATR-FTIR (absorbance ratio β: A908/A1722) is 0.1 or less. 1. A method for producing hollow particles having a shell containing at least one layer and having an average particle diameter of 10 to 150 nm , the method comprisingperforming a reaction of at least one epoxy group- or oxetane group-containing radical reactive monomer; andperforming a reaction with at least one water-soluble amine compound until the remaining unreacted epoxy group amount is 0.9 mmol/g or less.2. Hollow particles having a shell containing at least one layer and having an average particle diameter of 10 to 150 nm ,{'sup': −1', '−1, 'wherein a ratio β between absorbance at 908 cm(A908) and absorbance at 1722 cm(A1722) in an infrared absorption spectrum obtained by measuring the hollow particles by ATR-FTIR (absorbance ratio β: A908/A1722) is 0.1 or less.'}3. The hollow particles according to claim 2 , having a hollow ratio of 35 volume % or more.4. The hollow particles according to claim 2 , wherein the at least one layer contains nitrogen and carbon claim 2 , and wherein a nitrogen abundance ratio N and a carbon abundance ratio C obtained by measuring the hollow particles by XPS satisfy the relationship of 0.01≤N/C≤0.2.5. The hollow particles according to claim 2 , wherein the at least one layer contains a cross-linked copolymer derived from at least one epoxy group- or oxetane group-containing radical reactive monomer and at least one water-soluble amine compound.6. The hollow particles according to claim 2 , wherein the at least one layer contains a copolymer derived from at least one epoxy group- or oxetane group-containing radical reactive monomer and at least one silyl group- ...

Method for Producing Colloidosome Microcapsules

This invention relates to a process for colloidosome-type microcapsules elaboration from solid particles microcapsules obtained by ionic gelation. In the process, an (O/W) type emulsion is initially generated stabilized with the solid particles microcapsules, and then the particles are fixed to the interface by adsorption of polyelectrolytes, cross-linking, heat treatment or fatty coating, generating the colloidosome with the water-insoluble phase encapsulated in the core and covered by the shell particles. 1) A process for elaborating colloidosomes-type microcapsules comprising:a) dispersing in water agglomerates of solid particles microcapsules obtained by ionic gelation to form a suspension;b) emulsify a liquid insoluble in water using as emulsifier the suspension obtained in a); andc) fix the solids adsorbed on the water-liquid interface insoluble in water, to obtain the colloidosomes.2) A process according to claim 1 , wherein the mixture obtained in c) is dried to obtain powder colloidosomes.3) A process according to claim 1 , wherein the microcapsules of step a) comprise water-insoluble solids selected from the group consisting of metallic and non-metallic minerals claim 1 , phyllosilicates claim 1 , polymer particles and insoluble solids obtained via synthesis claim 1 , extraction or by bioprocesses.4) A process according to claim 1 , wherein the solid particles microcapsules of step a) have a size between 10 nm and 1000 μm.5) A process according to claim 1 , wherein in step a) shear-type disruptive forces claim 1 , cavitation claim 1 , shock claim 1 , pressure drop or combinations thereof are applied to prevent the agglomerates formation.6) A process according to claim 1 , wherein the fixation of the adsorbed particles on the water-liquid interface water-insoluble of step c) is carried out by polyelectrolytes adsorption claim 1 , cross-linking claim 1 , heat treatment and/or treatment with a fatty acid emulsion or fatty acids mixture.7) A process according ...

Stimuli-Responsive Micro-Reservoirs for Release of Encapsulants

This invention relates to polymer-based partially-open, hollow reservoirs in the nano-size to micro-size range that encapsulate an additive, which can be released from the reservoirs using specific event stimuli such as reduction-oxidation and voltage change, or at will, using the same stimuli. This invention also relates to method preparing such reservoirs, and for releasing the additive. This invention further relates to matrix that comprises such reservoirs and the method of preparing such matrix. This invention also relates to applications, for example in corrosion inhibition, lubrication, and adhesion, that benefit from using such a controlled release of an additive.

Peel-resistant self-healing coatings and stains for porous substrates

Disclosed are methods of protecting porous substrates and/or increasing the peel-resistance of coatings and stains for porous substrates. The methods may include providing a stain or coating comprising a microencapsulated self-healing material; and applying the stain or coating to a porous substrate. Damage to the stain or coating may release the self-healing material at a site of damage, such as a crack or scratch in the stain or coating. The self-healing material may be a polymeric precursor, .an unsaturated polyester resin or alkyd, a fatty acid-based natural oil or derivative thereof, or a cross-linkable silane or siloxane monomer or resin. The microencapsulated self-healing material may include a microcapsule having a shell wall that includes a thermosetting polymer or a thermoplastic polymer; the thermosetting polymer may include urea-formaldehyde, melamine formaldehyde, polyurethane, polyurea, or polyacrylate; and the thermoplastic polymer comprises poly(methyl methacrylate), poly(lactic acid), or poly(glycolic acid).

Compositions comprising benefit agent containing delivery particle

Compositions that include benefit agent delivery particles, the particles having a core and a shell encapsulating the core, the shell including certain acrylate-based polymers. Processes for making and using such compositions.

Method of encapsulation and immobilization

A method for encapsulating a material comprises the steps of choosing a material to encapsulate; placing the material into a material solvent to form a material solution; forming a primary emulsion of the material solution in an immiscible liquid medium that is immiscible with the material solvent, the material solution serving as the disperse phase and the immiscible liquid medium serving as the continuous phase of the primary emulsion, wherein the immiscible liquid medium contains an encapsulating agent dissolved therein, the encapsulating agent being capable of being crosslinked, polymerized, gelled or otherwise hardened or solidified; adding the primary emulsion as droplets into a crosslinking medium, and thereafter activating the crosslinking, polymerizing, gelling, hardening or solidifying of the encapsulating agent to envelope the material in a crosslinked, polymerized, gelled or otherwise hardened or solidified matrix forming the droplets into beads.

POLYMER CAPSULE HAVING LOADED THEREON TRANSITION METAL PARTICLES HAVING EXCELLENT WATER DISPERSIBILITY AND STABILITY, AND METHOD FOR PREPARING SAME

Provided are a polymer capsule loaded with transition metal particles having excellent water dispersibility and stability, and a method for preparing the same. Specifically, the polymer capsule loaded with transition metal particles according to the present invention includes a surface-modified polymer capsule surface-modified to thereby have a positive zeta potential in a dispersed state in water; and transition metal particles loaded on a surface of the surface-modified polymer capsule. In addition, a method for preparing a polymer capsule loaded with transition metal particles according to the present invention includes a) preparing a polymer capsule; b) surface-modifying the polymer capsule to prepare a polymer capsule having a positive zeta potential in a dispersed state in water; and c) sequentially adding a water-soluble transition metal precursor and a reducing agent to a water dispersion of the surface-modified polymer capsule obtained in step b). 2. The polymer capsule loaded with transition metal particles of claim 1 , wherein the surface-modified polymer capsule has a zeta potential of 60 to 90 mV.3. The polymer capsule loaded with transition metal particles of claim 1 , wherein a sulfonium group is formed on the surface of the surface-modified polymer capsule.4. The polymer capsule loaded with transition metal particles of claim 1 , wherein the transition metal particles have an average diameter of 1.5 to 3.5 nm.5. The polymer capsule loaded with transition metal particles of claim 1 , wherein 0.1 to 12 parts by weight of a particulate transition metal is loaded based on 100 parts by weight of the polymer capsule.7. The method of claim 6 , wherein the surface-modified polymer capsule has a zeta potential of 60 to 90 mV.8. The method of claim 6 , wherein the water-soluble transition metal precursor is an alkali metal-transition metal halide.9. The method of claim 8 , wherein the number of moles of the added water-soluble transition metal precursor is 1 ...

A process for producing a thermofunctional nanostructure obtained via polymerization in emulsion

The present invention describes an approach to the design of temperature regulation systems combining, in a single structure, a heat absorption or release system by fusion or solidification of a particular material and also a particulate oxide that contributes to reflecting infrared radiation. The production of the thermofunctional nanostructure comprises six successive processing steps: a) pre-emulsifying the organic material and dispersing the colloidal oxide nanoparticles in an aqueous phase, the pre-emulsion; b) reducing droplet size in the pre-emulsion by high-pressure homogenisation; c) adsorbing the monomer in the resultant emulsion; d) polymerising and forming thermoftmctional nanostructures; e) cooling the nanosuspension containing the thermofunctional structures; and optionally f) drying the product. The resultant thermofunctional nanostructure can be in the form of a colloidal dispersion in an aqueous medium or of a nanoparticle powder, if the aqueous nanostructure dispersion is subjected to a drying process. This thermofunctional nanostructure can be applied to obtain products in the fields of cosmetics, pharmaceuticals, medical equipment, prostheses, textiles, paints, coatings, composites, packaging, civil engineering, electrical or electronic equipment, the automobile and paper industries.

MICROPARTICLES

The invention provides a self-assembled microparticle having an acid having two or more acid groups and an organic base in a solvent. The microparticles may form into a macrostructure and provide a scaffold for cell culture. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent. The microparticles have antimicrobial activity and may be used in a wide range of consumer product applications, cell culture and medical products, such as wound dressings. 1. A self-assembled microparticle comprising an acid having two or more acid groups and an organic base.2. A microparticle according to having a particle size of 0.5 to 10 microns.3. A microparticle according to in which the molar ratio of acid groups to basic groups in the acid and base is from 0.6 to 1.4:1.4. (canceled)5. A method of making a microparticle according to suitable for use as a particulate support comprising contacting a bis-acid and an organic base in a hydrophilic solvent claim 1 , wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent.67-. (canceled)8. A microparticle according to wherein the acid comprises a bis-acid.911-. (canceled)12. A microparticle according to wherein the acid comprises a compound of general formula HOOC—(CH)—COOH wherein n is sufficiently large that the bis acid is sparingly soluble or insoluble in water.13. A microparticle according to wherein n is at least 5 and not more than 40.14. A microparticle according to wherein the acid comprises brassylic acid claim 1 , sebacic acid and/or azelaic acid.15. A microparticle according to wherein the organic base comprises an aliphatic amine or an aromatic amine having a basic character or other nitrogen-containing base.16. (canceled)17. A ...

HOLLOW FINE PARTICLE PRODUCTION METHOD AND HOLLOW FINE PARTICLES

A method for producing hollow fine particles containing a fluorine-containing resin and having a large average particle size. The method includes a step A of providing hollow fine particles by dispersing a solution containing a fluorine-containing monomer, an oil-soluble initiator, and a non-polymerizable solvent in water containing a fluorine-containing surfactant and thereby polymerizing the fluorine-containing monomer. Also disclosed are hollow fine particles including a fluorine-containing resin and having an average particle size of 70 nm or greater and 10 μm or smaller. The hollow fine particles each have a porosity of 5% by volume or higher, and the fluorine-containing resin contains a polymerized unit based on a fluorine-containing monomer and a polymerized unit based on a crosslinkable monomer. 1. A method for producing hollow fine particles containing a fluorine-containing resin , the method comprisinga step A of providing hollow fine particles by dispersing a solution containing a fluorine-containing monomer, an oil-soluble initiator, and a non-polymerizable solvent in water containing a fluorine-containing surfactant and thereby polymerizing the fluorine-containing monomer.2. The production method according to claim 1 , further comprising a step B of removing the non-polymerizable solvent from the hollow fine particles obtained in the step A.3. The production method according to claim 1 ,wherein the solution further contains a crosslinkable monomer, andthe step A includes polymerizing the fluorine-containing monomer and the crosslinkable monomer.4. The production method according to claim 1 ,wherein the crosslinkable monomer comprises a multifunctional monomer containing two or more polymerizable double bonds.5. The production method according to claim 1 ,wherein the fluorine-containing monomer comprises at least one selected from the group consisting of a fluorine-containing acrylic monomer and a fluorine-containing styrene monomer.6. The production ...

Microencapsulated Polyaddition Catalyst

A microencapsulated polyaddition catalyst comprises a capsule core, containing polyaddition catalyst, and an acrylic copolymer capsule shell, the acrylic copolymer comprising copolymerized units of an intermolecular anhydride of an ethylenically unsaturated C-Ccarboxylic acid. The polyaddition catalyst is selected from acyclic tertiary amines, alicyclic tertiary amines, N-alkylimidazoles, phosphines and organic metal salts. It is suitable for catalysing the reaction of a polyol compound with a polyisocyanate compound. The polyaddition catalyst is released by a chemical stimulus, such as on contact with polyols or water, for example. 1. A microencapsulated polyaddition catalyst comprising a capsule core , containing the polyaddition catalyst , and an acrylic copolymer capsule shell , the acrylic copolymer comprising copolymerized units of an intermolecular anhydride of an ethylenically unsaturated C-Ccarboxylic acid , and the polyaddition catalyst being selected from acyclic tertiary amines , alicyclic tertiary amines , N-alkylimidazoles , phosphines and organic metal salts.2. The microencapsulated polyaddition catalyst according to claim 1 , wherein the intermolecular anhydride of the ethylenically unsaturated C-Ccarboxylic acid is selected from acrylic anhydride claim 1 , methacrylic anhydride and 4-vinylbenzoic anhydride.3. The microencapsulated polyaddition catalyst according to claim 1 , wherein the acrylic copolymer is constructed of units of{'sub': 3', '12, '(a) 5 to 50 wt % of at least one intermolecular anhydride of an ethylenically unsaturated C-Ccarboxylic acid,'}{'sub': 1', '24', '1', '24, '(b) 30 to 90 wt % of at least one monomer selected from C-Calkyl esters of acrylic acid, C-Calkyl esters of methacrylic acid and vinylaromatics,'}(c) 5 to 20 wt % of at least one monomer which has at least two ethylenic unsaturations, and(d) 0 to 30 wt % of one or more other monomers, based in each case on the total weight of the monomers.4. The microencapsulated ...

ANIONIC POLYVINYL ALCOHOL COPOLYMER AS PROTECTIVE COLLOID FOR PESTICIDAL POLYUREA MICROCAPSULES

The present invention relates to a process for producing microcapsules which contain a shell and a core of a liquid water-insoluble material, where 115-. (canceled)16: A process for producing microcapsules which contain a shell and a core of a liquid water-insoluble material , where(a) a premix (I) is prepared from water and a protective colloid;(b) a further premix (II) is prepared from the water-insoluble material and at least bifunctional isocyanate (A) or a mixture of two or more different isocyanates containing (A);(c) the two premixes (I) and (II) are mixed together until an emulsion is formed;(d) at least a bifunctional amine is then poured into the emulsion from step (c); and(e) the emulsion is then heated until the microcapsules are formed; andwhere the liquid water-insoluble material comprises a pesticide,where the protective colloid is a polyvinyl alcohol copolymer having hydrolysis degrees from 60 to 99.9%,where the polyvinyl alcohol copolymer contains comonomers with anionic groups, andwherein the isocyanate (A) is selected from alicyclic or aliphatic isocyanates.17: The process as claimed in claim 16 , wherein the polyvinyl alcohol copolymer contains comonomers with anionic groups selected from carboxyl- and/or sulfonic acid groups.18: The process as claimed in claim 16 , wherein the polyvinyl alcohol copolymer contains 0.1 to 30 mol % of the comonomers with anionic groups.19: The process as claimed in claim 16 , wherein the polyvinyl alcohol copolymer is used with amounts from 0.1 to 20% by weight claim 16 , based on the weight of the microcapsules.20: The process as claimed in claim 16 , wherein the water-insoluble material comprises a pesticide blended with an oily solvent.21: The process as claimed in claim 16 , wherein the isocyanate (A) is selected from hexamethylene diisocyanate or derivatives thereof claim 16 , or dicyclohexylmethane diisocyanates.22: The process as claimed in claim 16 , wherein a mixture of isocyanate (A) and an anionically ...

MICROCAPSULE COMPOSITIONS WITH HIGH PERFORMANCE

A microcapsule composition is provided, which contains a polyurea or polyurethane microcapsule, an alkylnaphthalenesulfonate formaldehyde condensate, and polyvinylpyrrolidone. Also disclosed is a process of preparing the microcapsule composition and a consumer product having such a microcapsule composition. 2. The microcapsule composition of claim 1 , wherein the polyurea is a reaction product of a polyfunctional isocyanate and a polyfunctional amine in the presence of an alkylnaphthalenesulfonate formaldehyde condensate and polyvinylpyrrolidone claim 1 , and the polyurethane is a reaction product of a polyfunctional isocyanate and a polyfunctional alcohol as a cross-linking agent in the presence of an alkylnaphthalenesulfonate formaldehyde condensate and polyvinylpyrrolidone.3. The microcapsule composition of claim 2 , wherein the polyfunctional isocyanate is an aromatic polyfunctional isocyanate claim 2 , aliphatic polyfunctional isocyanate claim 2 , or combination thereof claim 2 , the aromatic polyfunctional isocyanate containing a phenyl claim 2 , tolyl claim 2 , xylyl claim 2 , naphthyl claim 2 , or diphenyl moiety claim 2 , or a combination thereof and the aliphatic polyfunctional isocyanate being a trimer of hexamethylene diisocyanate claim 2 , a trimer of isophorone diisocyanate claim 2 , a biuret of hexamethylene diisocyanate claim 2 , or a combination thereof.4. The microcapsule composition of claim 3 , wherein the aromatic polyfunctional isocyanate is selected from the group consisting of polymeric methylene diphenyl diisocyanate claim 3 , polyisocyanurates of toluene diisocyanate claim 3 , trimethylol propane-adducts of toluene diisocyanate claim 3 , trimethylol propane-adducts of xylylene diisocyanate claim 3 , and a combination thereof; and the aliphatic polyfunctional isocyanate is selected from the group consisting of dimers claim 3 , biurets claim 3 , symmetric trimers claim 3 , asymmetric trimers of hexamethylene diisocyanate claim 3 , and a ...

Microcapsules adapted to rupture in a magnetic field to enable easy removal of one substrate from another for enhanced reworkability

An enhanced thermal interface material (TIM) gap filler for filling a gap between two substrates (e.g., between a coldplate and an electronics module) includes microcapsules adapted to rupture in a magnetic field. The microcapsules, which are distributed in a TIM gap filler, each have a shell that encapsulates a solvent. One or more organosilane-coated magnetic nanoparticles is/are covalently bound into the shell of each microcapsule. In one embodiment, (3-aminopropyl)trimethylsilane-coated magnetite nanoparticles are incorporated into the shell of a urea-formaldehyde (UF) microcapsule during in situ polymerization. To enable easy removal of one substrate affixed to another substrate by the enhanced TIM gap filler, the substrates are positioned within a magnetic field sufficient to rupture the microcapsule shells through magnetic stimulation of the organosilane-coated magnetic nanoparticles. The ruptured microcapsule shells release the solvent, which dissolves and/or swells the TIM gap filler, thereby reducing the bond strength between the substrates.

Encapsulated polar materials and methods of preparation

The present invention meets one or more of the above needs and is a composition comprising plurality of capsules wherein the capsules comprise: a core of one or more highly polar liquids; one or more polar active materials dissolved in or dispersed in one or more highly polar liquids; a mixture of one or more polymers and one of more highly polar liquids; or a mixture of one or more polymers, one or more highly polar liquids and one or more polar active materials, and a shell comprising, particles in a polymer matrix or particles; wherein the thickness of the shell is sufficient to prevent passage of the highly polar liquid or the active material through the shell or to control the rate passage of the highly polar liquid or the active material through the shell with the proviso that the one or more polymers may be located in the core, in the polymer matrix of the shell or both.

DEGRADABLE MICROCAPSULES FOR POROSITY REDUCTION

A microcapsule, a method, and an article of manufacture. The microcapsule includes a degradable shell and a polymerizing agent encapsulated by the degradable shell. The method includes selecting a polymerizing agent, encapsulating the polymerizing agent in a degradable shell, and rupturing the degradable shell by exposure to an energy source, such as a laser, a UV radiation source, and/or a heat source. The article of manufacture includes a microcapsule having a degradable shell and a polymerizing agent encapsulated by the degradable shell. 1. A microcapsule , comprising:a degradable shell; anda polymerizing agent for reducing porosity in a material prepared by selective laser sintering, wherein the polymerizing agent is encapsulated by the degradable shell.2. The microcapsule of claim 1 , wherein the degradable shell is made of a photodegradable polymer.3. The microcapsule of claim 1 , wherein the degradable shell is made of a heat-degradable polymer.4. The microcapsule of claim 1 , wherein the polymerizing agent is dicyclopentadiene.5. The microcapsule of claim 1 , wherein the polymerizing agents comprise diamines and diacid chlorides.6. The microcapsule of claim 1 , wherein the degradable shell is a polyamic acid.7. A method claim 1 , comprising:selecting at least one polymerizing agent;encapsulating the polymerizing agent in a degradable shell to form a microcapsule; the microcapsule; and', 'particles for selective laser sintering; and, 'forming a layer, the layer comprisingrupturing the degradable shell by exposure to at least one energy source selected from the group consisting of a laser, an ultraviolet (UV) radiation source, and a heat source.8. The method of claim 7 , wherein the polymerizing agent is dicyclopentadiene.9. The method of claim 7 , wherein the encapsulating comprises:extruding the polymerizing agent through an inner nozzle of a coaxial nozzle of a high-power electrostatic spinning machine; andextruding a degradable polymer through an outer ...

METHOD FOR PREPARNG CAPSULES COMPRISING AT LEAST ONE WATER-SOLUBLE OR HYDROPHILIC SUBSTANCE AND CAPSULES OBTAINED THEREFROM

The present invention relates to a method for preparing solid microcapsules that comprises of the following steps of preparing a composition C1, comprising at least one water-soluble or hydrophilic substance dispersed in a hydrophobic phase; adding, under agitation, of the said composition C1 in a polymeric composition C2, the compositions C1 and C2 being immiscible with each other, whereby an emulsion (E1) is obtained; adding, under agitation, of the emulsion (E1) in a composition C3, the compositions C2 and C3 being immiscible with each other, whereby a double emulsion (E2) is obtained; shearing the emulsion (E2), whereby a double emulsion (E3) is obtained; and polymerizing the composition C2, wherein solid microcapsules dispersed in the composition C3 are obtained. 1. A method for preparing solid microcapsules that comprises of the following steps:a) preparing a composition C1, comprising at least one water-soluble or hydrophilic substance dispersed in a hydrophobic phase;b) adding, under agitation, of said composition C1 in a polymeric composition C2, the compositions C1 and C2 being immiscible with each other;the composition C2 comprising at least one monomer or polymer, at least one crosslinking agent, and optionally at least one photoinitiator or a crosslinking catalyst;the viscosity of the composition C2 being comprised between 500 mPa·s and 100 000 mPa·s at 25° C.,wherein an emulsion (E1) is obtained comprising droplets of the composition C1 dispersed in the composition C2; 'the viscosity of the composition C3 being comprised between 500 mPa·s and 100,000 mPa·s at 25° C., and preferably being greater than the viscosity of the emulsion (E1);', 'c) adding, under agitation, of the emulsion (E1) in a composition C3, the compositions C2 and C3 being immiscible with each other;'}wherein a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3;d) applying a shear to the emulsion (E2);wherein a double emulsion (E3) is obtained ...

PROCESS FOR MANUFACTURING LIGHT ABSORBING POLYMER MATRIX

An ophthalmic lens comprising a transparent polymer matrix and core shell nanoparticles which are dispersed in the transparent polymer matrix, wherein the core of core shell nanoparticles results from polymerization of a composition comprising nanoparticle core precursors and at least one photochromic compound, and the shell of core shell nanoparticles comprises a mineral compound. 1. An ophthalmic lens comprising a transparent polymer matrix and core shell nanoparticles which are dispersed in the transparent polymer matrix , wherein:the core of core shell nanoparticles results from polymerization of a composition comprising nanoparticle core precursors and at least one photochromic compound; andthe shell of core shell nanoparticles comprises a mineral compound.2. The ophthalmic lens according to claim 1 , wherein the photochromic compound is chosen from benzopyrans claim 1 , naphthopyrans claim 1 , spirobenzopyrans claim 1 , spironaphthopyrans claim 1 , spirobenzoxzines claim 1 , spironaphthoxazines claim 1 , fulgides or fulgimides.3. The ophthalmic lens according to claim 1 , wherein a molar absorption coefficient of the photochromic compound in a colored form is higher than 5000 L molcm.4. The ophthalmic lens according to claim 1 , wherein the amount of photochromic compound in the core-shell nanoparticles is from 0.0001 to 90 wt % based on the total weight of the core-shell nanoparticles.5. The ophthalmic lens according to claim 1 , wherein the transparent polymer matrix is chosen from a thermoplastic resin claim 1 , such as a polyamide claim 1 , polyimide claim 1 , polysulfone claim 1 , polycarbonate claim 1 , polyester claim 1 , polyethylene terephthalate claim 1 , poly(meth)acrylate) claim 1 , PMMA claim 1 , polycyclic olefin copolymer claim 1 , thermoplastic elastomers claim 1 , thermoplastic urethanes claim 1 , polycellulose triacetate or copolymers thereof claim 1 , or transparent polymer matrix is chosen from a thermosetting resin claim 1 , such as a ...

SILICA-INCLUDING MICROCAPSULE RESIN PARTICLES, METHOD FOR PRODUCING SAME, AND APPLICATION THEREOF

Silica-including microcapsule resin particles including an outer shell constituted of a crosslinked polymer and a cavity partitioned with the outer shell, in which the silica-including microcapsule resin particles contain inside the cavity a porous structure in which silica particles are mutually connected, and have a volume average particle diameter of 0.5 to 100 μm. 1. Silica-including microcapsule resin particles , comprising:an outer shell constituted of a crosslinked polymer; anda cavity partitioned with said outer shell,wherein said silica-including microcapsule resin particles contain inside said cavity a porous structure in which silica particles are mutually connected, and have a volume average particle diameter of 0.5 to 100 μm.2. The silica-including microcapsule resin particles according to claim 1 , wherein said porous structure has a weight that is 5 to 50% of a total weight of said silica-including microcapsule resin particles claim 1 , and gives a hollow structure to said cavity.3. The silica-including microcapsule resin particles according to claim 1 , wherein said outer shell is porous.4. The silica-including microcapsule resin particles according to claim 1 , wherein said outer shell is porous claim 1 , and said silica-including microcapsule resin particles have an oil absorption of 150 to 500 ml/100 g.5. The silica-including microcapsule resin particles according to claim 1 , wherein said outer shell is non-porous claim 1 , and said silica-including microcapsule resin particles have an apparent specific gravity of 0.3 to 1.0 g/cm.6. A method for producing the silica-including microcapsule resin particles as defined in claim 1 , the method comprising the steps of:suspension polymerizing a mixture containing 100 parts by weight of a radical polymerizable monofunctional monomer, 20 to 80 parts by weight of a crosslinking monomer, and 60 to 200 parts by weight of silicone alkoxide as a silica precursor in presence of a radical polymerization ...

HEAT-EXPANDABLE MICROSPHERES AND APPLICATION THEREOF

Heat-expandable microspheres having an expansion temperature which can be decreased by a simple means without changing the polymerizable monomer and its ratio and/or changing the blowing agent and its ratio, and applications thereof. The heat-expandable microspheres are composed of a thermoplastic resin shell and a core material encapsulated therein. The core material contains a thermally-vaporizable blowing agent which imparts a swelling degree of less than 5% as defined by the following formula (I) and a component (A) which imparts a swelling degree of 5 to 30% as defined by the following formula (I), wherein an amount of the component (A) ranges from 0.0001 to 30 parts by weight to 100 parts by weight of the blowing agent: 2. The heat-expandable microspheres as claimed in claim 1 , wherein the component (A) has a solubility parameter ranging from 8 to 15.3. The heat-expandable microspheres as claimed in claim 1 , wherein the component (A) comprises at least one selected from ester compounds and alkyl-substituted aromatic compounds.4. The heat-expandable microspheres as claimed in claim 1 , wherein the thermoplastic resin is obtained by polymerizing a polymerizable component containing a nitrile monomer.5. The heat-expandable microspheres as claimed in claim 1 , wherein the maximum expansion temperature of the heat-expandable microspheres ranges from 80 to 200° C.6. The heat-expandable microspheres as claimed in claim 1 , wherein the expansion initiation temperature of the heat-expandable microspheres ranges from 50 to 150° C.7. The heat-expandable microspheres as claimed in claim 1 , wherein the maximum expansion temperature claim 1 , T(° C.) claim 1 , of the heat-expandable microspheres and the maximum expansion temperature claim 1 , T(° C.) claim 1 , of the heat-expandable microspheres produced with the same components as that of the former except the component (A) satisfy the following formula (II):{'br': None, 'i': T', '−T, 'sup': 2', '1, 'sub': m', 'm, '>3\ ...

Hollow silica nanomaterials and method of making

One embodiment of the present invention is a hollow silica nanomaterial (HSN). The HSN includes silicon dioxide (SiO 2 ) molecules which join together to form a shell. The shell extends from a first end to a second end and has a generally circular cross section, an inner surface and an opposite outer surface. Another embodiment of the present invention includes a method for forming an HSN. The method includes combining polyvinylpyrrolidone (PVP) and an alcohol to form a mixture, adding water to the mixture, adding sodium citrate to the mixture, adding a silicon-containing compound to the mixture, adding a catalyst to the mixture, and collecting hollow silica nanomaterials.

METHOD FOR SYNTHESIZING POLYMER/PIGMENT HYBRID LATEX THROUGH SULFUR-FREE AND SOAP-FREE IN-SITU REVERSIBLE ADDITION-FRAGMENTATION CHAIN TRANSFER (RAFT) EMULSION COPOLYMERIZATION

A method for synthesizing a polymer/pigment hybrid latex through sulfur-free and soap-free in-situ reversible addition-fragmentation chain transfer (RAFT) emulsion copolymerization includes the following: dispersing a pigment with a reactive emulsifier to prepare a pigment dispersion; synthesizing an amphiphilic sulfur-free ω-vinyl-terminated polymethyl methacrylate (PMMA) macromolecular RAFT agent in-situ on a surface of pigment particles through catalytic chain transfer polymerization (CCTP); and adding an acrylate monomer dropwise, allowing in-situ sulfur-free RAFT polymerization on a surface of pigment particles through the RAFT agent, and adjusting a structure and a composition of an encapsulated polymer layer to obtain a series of uniformly encapsulated and stably dispersed polymer/organic pigment hybrid latexes. The new hybrid latex prepared through sulfur-free and soap-free in-situ RAFT emulsion copolymerization has the characteristics of high dispersion stability, high pigment encapsulation efficiency, clear encapsulated polymer layer sequence, controllable structure, etc., which is suitable for surface encapsulation modification of various pigments. 1. A method for synthesizing a polymer/pigment hybrid latex through a sulfur-free and soap-free in-situ reversible addition-fragmentation chain transfer (RAFT) emulsion copolymerization , comprising the following steps:(1) dispersing a pigment with a reactive emulsifier to prepare a pigment dispersion;(2) adding a methacrylate comonomer, a cobalt complex as a catalyst, water as a solvent, and a water-soluble initiator to the pigment dispersion to form a first reaction system, and allowing the reaction system to undergo a catalytic chain transfer polymerization (CCTP) to obtain a second reaction system, wherein an RAFT agent is synthesized in-situ on surfaces of pigment particles in the second reaction system;(3) adding an acrylate monomer to the second reaction system with the RAFT agent obtained in step (2), ...

METHODS FOR MAKING LOW REMNANT FREE FORMALDEHYDE MICROCAPSULES AND MICROCAPSULES MADE BY SAME

Methods for producing microcapsules begin by preparing an emulsion of a surfactant, core material, and water, followed by the addition of a crosslinking agent and a melamine formaldehyde prepolymer, which is subsequently polymerized. The crosslinking agent is added before the melamine formaldehyde prepolymer, with a first addition or a second addition of a melamine formaldehyde prepolymer, or is divided for addition with both a first addition and a second addition of melamine formaldehyde prepolymer. The crosslinking agent is a mixture of a reaction product of a cyclic urea (U) and a multifunctional aldehyde (A), and at least one crosslinker selected from the following group: a reaction products of (i) an aminotriazine and at least one aldehyde selected from the group consisting of aliphatic monoaldehydes and multifunctional aliphatic aldehydes, (ii) urea and/or cyclic ureas and formaldehyde, or (iii) phenols and aliphatic monoaldehydes, or from alkoxycarbonylaminotriazines, or multifunctional isocyanates, epoxides, aziridines, and carbodiimides. 1. A method for producing capsules , the method comprising:preparing an emulsion comprising a surfactant, core material, and water; (a) a reaction product of a cyclic urea (U) and a multifunctional aldehyde (A), and', [{'sub': 'n', '(b1) reaction products of an aminotriazine and at least one aldehyde selected from the group consisting of aliphatic monoaldehydes and multifunctional aliphatic aldehydes having the structure Y(CHO), where Y is an n-functional aliphatic residue, and n is greater than 1, where U is not dihydroxyethylene urea if the crosslinker (b) is (b1),'}, '(b2) reaction products of urea and/or cyclic ureas and formaldehyde,', '(b3) alkoxycarbonylaminotriazines,', '(b4) multifunctional isocyanates, optionally partially or completely blocked,', '(b5) reaction products of phenols and aliphatic monoaldehydes,', '(b6) multifunctional epoxides,', '(b7) multifunctional aziridines, and', '(b8) multifunctional ...

MICROENCAPSULATION OF CHEMICAL ADDITIVES

The present disclosure relates to new and optimized processes for the preparation of micro- and nano-scale capsules containing lubricant chemical additives. The present disclosure also relates to micro- and nano-scale capsules prepared by such processes, which are useful in a variety of applications, including automotive lubricants, diesel lubricants, industrial lubricants, metal-working lubricants, coolants, and process fluids. Micro- and nano-scale capsules prepared as described herein have the required properties that such capsules need to exhibit in order to function effectively and meet the requirements imposed by engine lubrication conditions. The microcapsules may be dispersed in a lubricating oil such that the lubricant exhibits improved stability and anti-wear performance, thereby improving engine fuel efficiency and performance. 1. A process for preparing microcapsules of a chemical additive , the process comprising(i) forming an aqueous solution comprising one or more emulsifiers;(ii) adding a curing catalyst and a cross-linking agent to the product of step (i) at a pH of between about 3.0 and about 4.0 to form an emulsion;(iii) adding one or more chemical additives to the emulsion of step (ii);(iv) adding a solution comprising (i) formaldehyde, paraformaldchyde or a combination thereof, and (ii) urea, melamine, or a combination thereof, to the product of step (iii); and(v) heating the product of step (iv) to form microcapsules of the chemical additive.2. The process of claim 1 , wherein the curing catalyst is selected from ammonium chloride and the cross-linking agent is selected from resorcinol.34-. (canceled)5. The process of claim 1 , wherein the molar ratio of (i) formaldehyde claim 1 , paraformnaldehyde or a combination thereof claim 1 , to (ii) urea claim 1 , melamine claim 1 , or a combination thereof claim 1 , is about 1 to about 3 claim 1 , about 1.5 to about 2.5 or about 1 to about 1.9.6. (canceled)7. The process according to . further ...

MICROCAPSULES PRODUCED FROM BLENDED SOL-GEL PRECURSORS AND METHOD FOR PRODUCING THE SAME

The present invention features microcapsule particle compositions with an oil or aqueous liquid core, and shell composed of a blend of metal or semi-metal oxide polymers. Methods for preparing and using the microcapsule particles in personal care, therapeutic, cosmetic and cosmeceutic products are also provided. 1. A microcapsule particle composition comprising:(a) a core formed from an oil or aqueous liquid containing at least one active ingredient; and (i) at least one hydrolyzable silicon oxide polymer, and', '(ii) at least one silicon oxide polymer having a non-hydrolyzable substituent,, '(b) a shell encapsulating said core, wherein said shell comprises'}wherein the polymer of (ii) is present in an amount of 1% to 10% of the total weight of the shell.2. The microcapsule particle composition of claim 1 , wherein the at least one silicon oxide polymer having a non-hydrolyzable substituent is dimethyldiethoxysilane claim 1 , n-octylmethyldiethoxysilane claim 1 , poly(diethoxysiloxane) claim 1 , hexadecyltriethoxysilane claim 1 , or combination thereof.3. The microcapsule particle composition of claim 1 , further comprising a surfactant or polymer.4. The microcapsule particle composition of claim 3 , wherein the surfactant or polymer is a phosphate ester.5. The microcapsule particle composition of claim 4 , wherein the phosphate ester is an oleth-10-phosphate.6. The microcapsule particle composition of claim 4 , wherein the phosphate ester is present in an amount up to 5% by weight of the total microcapsule particle composition.7. The microcapsule particle composition of claim 4 , wherein the phosphate ester is present in an amount up to 2% by weight of the total microcapsule particle composition.8. The microcapsule particle composition of claim 1 , wherein the weight ratio of the hydrolyzable silicon oxide polymer and the silicon oxide polymer having at least one non-hydrolyzable substituent ranges from 99:1 to 19:1.9. The microcapsule particle composition of claim ...

MICROCAPSULES COMPRISING HYDROXYALKYL CELLULOSE

The application describes an aqueous dispersion of microcapsules, wherein the shell of the microcapsules comprises at least one polyuria and the core comprises one or more lipophilic components with the proviso that the core does not contain a fragrance, and having a percentage of the shell weight with reference to the total weight of the capsules of 5 to 40% and wherein the microcapsules have a volume average diameter of 15 to 90 μm and the dispersion comprises hydroxyalkylcellulose and the use of such a dispersion. 1. An aqueous dispersion of microcapsules , wherein:a shell of the microcapsules comprises at least one polyurea and a core comprises one or more lipophilic components with the proviso that the core does not contain a fragrance, and having a percentage of the shell weight with reference to a total weight of the microcapsules of 5 to 40%;the microcapsules have a volume average diameter of 15 to 90 μm;the dispersion comprises hydroxyalkylcellulose as a stabilizing agent; and{'sup': '−1', 'a ratio of the shell weight percentage to the volume average diameter of the microcapsules is at most 0.7 μm.'}2. The microcapsule dispersion according to claim 1 , wherein a ratio of the shell weight percentage to the volume average diameter of the capsules is at most 0.5 μm.3. The microcapsule dispersion according to claim 1 , wherein a nominal rupture stress of the capsules is in a range of 0.1 to 2 MPa.4. The microcapsule dispersion according to claim 1 , wherein the lipophilic components are selected from components having a solubility in water of ≤10 mg/mL at 20° C.5. The microcapsule dispersion according to claim 1 , wherein a viscosity of the dispersion is ≤4 Pa s claim 1 , measured on a rheometer with rotating discs at a shear rate of 21 sand at a temperature of 25° C.6. The microcapsule dispersion according to claim 1 , wherein an amount of the hydroxyalkylcellulose is 0.05 to 1.2% by weight based on the total weight of the dispersion.7. The microcapsule ...

Heat-expandable microspheres, process for producing the same and application thereof

Heat-expandable microspheres having an almost spherical shape and high expansion performance and exhibiting good workability when mixed with a resin, a process for producing the heat-expandable microspheres, and applications thereof. The heat-expandable microspheres include a thermoplastic resin shell and a blowing agent encapsulated therein and vaporizable by heating. The thermoplastic resin is produced by polymerizing a polymerizable component containing a methacrylate monomer and a carboxyl-containing monomer, and optionally containing a nitrile monomer in an amount ranging from 0 to 30 parts by weight to 100 parts by weight of the total amount of the methacrylate monomer and the carboxyl-containing monomer. The blowing agent contains a hydrocarbon having at least 8 carbon atoms per molecule.

Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsules

This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

NANOCOMPOSITE MICROCAPSULES FOR SELF-HEALING OF COMPOSITE ARTICLES

Nanocomposite microcapsules for self-healing of composites. The nanocomposite microcapsules comprise a urea-formaldehyde shell encompassing a liquid core of polymerizable healing agent. The microcapsules further comprise nanoparticulates encompassed in the core and also present on the outer surface of the microcapsule shell. Self-healing composites with the nanocomposite microcapsules embedded in the composite polymer matrix are also described. Methods of making and using the same are also disclosed. 1. A nanocomposite microcapsule for self-healing of composites , said microcapsule comprising:a urea-formaldehyde shell having an outer surface;a liquid core comprising a polymerizable healing agent, said urea-formaldehyde shell encompassing said liquid core; andnanoparticulates, wherein at least a portion of said nanoparticulates are dispersed in said liquid core, and wherein at least a portion of said outer surface is covered by said nanoparticulates.2. The nanocomposite microcapsule of claim 1 , wherein said polymerizable healing agent is dicyclopentadiene.3. The nanocomposite microcapsule of claim 1 , wherein said nanoparticulates are selected from the group consisting of graphene nanoflakes claim 1 , single and multiwall carbon nanotubes claim 1 , carbon fibers/nanofibers claim 1 , carbon black claim 1 , nanoclay claim 1 , nanotalc claim 1 , boron nitride nanotubes claim 1 , and boron nitride nanoflakes claim 1 , and combinations thereof.4. The nanocomposite microcapsule of claim 1 , comprising from about 0.5 to about 4% by weight of said nanoparticulates claim 1 , based upon the total amount of polymerizable healing agent in the microcapsule taken as 100% by weight.5. The nanocomposite microcapsule of claim 1 , having an average maximum surface-to-surface dimension of from about 10 μm to about 200 μm.6. The nanocomposite microcapsule of claim 1 , wherein said shell has an average thickness of from about 200 nm to about 400 nm.7. A self-healing composite article ...

Composition, particulate materials and methods for making particulate materials

Particulate material comprising rough mesoporous hollow nanoparticles. The rough mesoporous hollow nanoparticles may comprise a mesoporous shell, the external surface of which has projections thereon, the projections having smaller sizes than the particle size. The particulate material may be used to deliver active agents, such as insecticides and pesticides. The active agents can enter into the hollow core of the particles and be protected from degradation by sunlight. The rough surface of the particles retains the particles on plant leaves or animal hair. Methods for forming the particles are also described. Carbon particles and methods for forming carbon particles are also described.

STABILIZING ADDITIVES FOR THERMOCHROMIC PIGMENTS

A microencapsulation process is improved by adding a stabilizing agent that contains one or more catalytic organo-metal oxide materials, such as metal soaps. This functions as a crosslinker by causing unsaturated bonds in the microcapsule walls to react, thereby stabilizing the microcapsules against the effects of additives to coatings that, otherwise, degrade the functionality of thermochromic or photochromic materials at the microcapsule core. 1. In a microencapsulating process that includes forming an emulsion that has respective hydrophobic and hydrophillic phases , and thereafter curing a polymer to microencapsulate the hydrophobic phase as a slurry , the improvement comprising:adding a stabilizing agent to the slurry wherein the stabilizing agent includes a metal-oxygen moiety that is capable of stabilizing the cured microcapsule walls2. The process of claim 1 , wherein the metal of the metal-oxygen moiety is a transition metal.3. The process of claim 1 , wherein the metal of the metal-oxygen moiety is zirconium.4. The process of claim 1 , wherein the metal-oxygen moiety is a soap.5. The process of claim 4 , wherein the metal-oxygen moiety is a transition metal soap.6. The process of claim 1 , wherein the metal-oxygen moiety is a zirconium-metal soap.7. The process of claim 1 , wherein the metal-oxygen moiety is zirconium 2-ethylhexanoate.8. The process of claim 1 , wherein the metal-oxygen moiety is added in a range from 0.5% to 15% by weight of the slurry.9. The process of claim 1 , wherein the polymer is selected to contain dominantly at least one member from the group consisting of melamine formaldehyde polymers and urea formaldehyde polymers.10. The process of claim 1 , wherein the microcapsules are formulated as a thermochromic pigment.11. The process of claim 1 , wherein the microcapsules are formulated as a photochromic pigment.12. The process of claim 1 , wherein the microcapsules are formulated as scented microcapsules.13. A slurry including ...

ENCAPSULATED POLYMERIZATION INITIATORS, POLYMERIZATION SYSTEMS AND METHODS USING THE SAME

A polymerizable system includes a curable composition and one or more encapsulated initiator particles. The curable composition can include one or more 1,1-disubstituted alkene compounds and the encapsulated initiator particles can include one or more polymerization initiators encapsulated by a cured composition. The cured composition includes one or more 1,1-disubstituted alkene compounds. 1. An initiator particle comprising:a polymerization initiator substantially encapsulated by a cured composition comprising one or more 1,1-disubstituted alkene compounds; anda shell layer substantially encapsulating the cured composition; andwherein the polymerization initiator is capable of initiating polymerization of the one or more 1,1-disubstituted alkene compounds.2. The initiator particle of claim 1 , wherein the shell layer is formed from one or more of a urea formaldehyde resin; a polyvinyl alcohol; a gelatin; an acrylate; a polyethylene wax; and a cured oligomeric reactive monomer.3. The initiator particle of claim 1 , wherein the shell layer comprises an acrylate.4. The initiator particle of claim 1 , wherein the one or more 1 claim 1 ,1-disubstituted alkene compounds are selected from the group consisting of methylene malonates claim 1 , methylene β-ketoesters claim 1 , methylene β-diketones claim 1 , dialkyl disubstituted vinyls claim 1 , dihaloalkyl disubstituted vinyls claim 1 , monofunctional claim 1 , difunctional claim 1 , or multifunctional monomers claim 1 , oligomers claim 1 , or polymers thereof claim 1 , and combinations thereof.5. The initiator particle of claim 1 , wherein the polymerization initiator comprises a spherical claim 1 , non-spherical claim 1 , irregular claim 1 , angular claim 1 , textured claim 1 , or layered particle having an average granulometry of about 0.1 microns to about 1 claim 1 ,000 microns.6. The initiator particle of claim 1 , wherein the polymerization initiator comprises an alkali metal salt claim 1 , an alkaline earth metal ...

COMPOSITIONS COMPRISING FUNCTIONALIZED POLYVINYL ALCOHOL AND NANOCAPSULES CONTAINING A LIQUID-CRYSTALLINE MEDIUM

The use of functionalized polymerizable polyvinyl alcohol as a binder or matrix for a dispersion of nanoparticles, wherein the nanoparticles respectively comprise a polymeric shell and a core containing a liquid crystalline medium. Composites comprising the functionalized polymer and the nanocapsules, methods for preparing the composites and electro-optical devices containing such composites. 2. The method according to claim 1 , wherein the polymer which is mixed with the nanocapsules in step (ii) has an average molecular weight within the range of 5 claim 1 ,000 g/mol to 250 claim 1 ,000 g/mol.4. The method according to claim 1 , wherein Ris an acryloyl group or a methacryloyl group.5. The method according to claim 1 , wherein di- or multireactive monomeric or oligomeric polymerizable compounds are further comprised in the composite.6. The method according to claim 1 , wherein in step (ii) the nancapsules are dispersed in the polymer claim 1 , and wherein subsequently the dispersion is arranged as a layer supported on a substrate or as a layer between two opposing substrates.7. The method according to claim 1 , wherein the method further comprises polymerization of the polymerizable groups of the prepared composite.8. A composite obtained by carrying out the method according to .10. The composite according to claim 9 , wherein the liquid crystalline medium comprises one or more compounds of formula I{'br': None, 'R-A-Y-A′-R′\u2003\u2003(I)'}wherein {'sub': 3', '3', '3', '2, 'group selected from F, CF, OCF, CN, and straight-chain or branched alkyl or alkoxy having 1 to 15 carbon atoms or straight-chain or branched alkenyl having 2 to 15 carbon atoms which is unsubstituted, monosubstituted by CN or CFor mono- or polysubstituted by halogen and wherein one or more CHgroups may be, in each case independently of one another, replaced by —O—, —S—, —CO—, —COO—, —OCO—, —OCOO— or —C≡C— in such a manner that oxygen atoms are not linked directly to one another,'}, 'R and R′ ...

Encapsulation

An improved process of making a benefit agent delivery particle and an improved microcapsule made by such process are disclosed. The process comprises the steps of providing a first composition of water phase 1, water phase 2 and water phase 3. Water phase 1 comprises water and an initiator; water phase 2 comprises water, a water-soluble or dispersible amine(meth)acrylate or hydroxyl(meth)acrylate and a multifunctional (meth)acrylate. Water phase 3 comprises water, and carboxyalkyl(meth)acrylate and a base or quarternary ammonium acrylate. The first two water phases are combined to prereact the hydroxy- or amine(meth)acrylate and the multifunctional (meth)acrylate to form a multifunctional hydroxyl-amine(meth)acrylate pre-polymer. The pre-polymer is combined with water phase 3; then an emulsion is formed by emulsifying under high shear agitation a second composition into said first composition; said second composition comprising an oil phase comprising an isocyanate and a benefit agent core material thereby forming a wall surrounding the benefit agent core material. 1. A microcapsule having a wall with a surface charge , the microcapsule made by a process comprising:{'sub': '2', 'dispersing in one or more water phases an initiator, and a cross-linking functional monomer having one or more —OH, —NH, or —NH— groups, and a charge functional monomer having one or more anionic or cationic groups which may be selected from carboxy, sulfonic acid, quaternary ammonium groups, or other charged groups;'}prereacting the monomers in the one or more water phases and combining with a water dispersible multifunctional (meth)acrylate monomer;further prereacting the combined monomers; forming an emulsion by emulsifying into the water phase or phases, using high shear agitation, an oil phase comprising an isocyanate and a benefit agent core material;optionally adding in addition, an amine cross-linker;further reacting the combined emulsion of prereacted monomers, water dispersible ...

HOLLOW PARTICLES, METHOD FOR PRODUCING SAME, USE THEREOF, AND METHOD FOR PRODUCING MICROCAPSULE PARTICLES

Provided are hollow particles each having a shell including at least one layer, wherein the hollow particles have an average particle diameter of 10 to 200 nm and the at least one layer contains a vinyl-based resin. 1. Hollow particles each having a shell including at least one layer , wherein said hollow particles have an average particle diameter of 10 to 200 nm , and said at least one layer contains a vinyl-based resin.2. The hollow particles according to claim 1 , whereinsaid hollow particles are hollow particles each having a shell including at least one layer,said hollow particles have an average particle diameter of 10 to 200 nm, andsaid at least one layer is composed of an organic-inorganic hybrid vinyl-based resin including a silicon-containing vinyl-based resin.3. The hollow particles according to claim 2 , wherein said silicon-containing vinyl-based resin comprises a crosslinked copolymer derived from a copolymer including at least one radical reactive monomer having an epoxy group or an oxetane group claim 2 , and at least one radical reactive monomer having a silyl group.4. The hollow particles according to claim 2 , wherein said hollow particles exhibit a 5% degradation initiation temperature of 250 to 350° C.5. The hollow particles according to claim 3 , wherein said radical reactive monomer having an epoxy group or an oxetane group is selected from p-glycidylstyrene claim 3 , glycidyl (meth)acrylate claim 3 , 4-hydroxybutyl (meth)acrylate glycidyl ether claim 3 , (3-ethyloxetan-3-yl)methyl (meth)acrylate claim 3 , and 3 claim 3 ,4-epoxycyclohexylmethyl (meth)acrylate.6. The hollow particles according to claim 3 , wherein said radical reactive monomer having a silyl group is selected from vinyltrichlorosilane claim 3 , vinyltrimethoxysilane claim 3 , vinyltriethoxysilane claim 3 , p-styrylmethoxysilane claim 3 , 3-methacryloxypropyldimethoxysilane claim 3 , 3-methacryloxypropyltrimethoxysilane claim 3 , 3-methacryloxypropylmethyldiethoxysilane claim 3 ...

Microcapsules

The present invention relates to microcapsules comprising a core within a polymeric shell, wherein the polymeric shell comprises a copolymer formed from 50 to 99.9%, by weight of the polymeric shell, of a first shell monomer which is ethylenically unsaturated and which has more than one ethylenic double bond; 0.01 to 50%, by weight of the polymeric shell, of a second shell monomer which is ethylenically unsaturated and which has one ethylenic double bond; and optionally, 0 to 30%, by weight of the polymeric shell, of one or more other shell monomers. The core of the microcapsules comprises an active substance, particularly a phase change material (PCM). The polymeric shell forms less than 8 wt % of the total weight of the microcapsules.

Water Repellent Organosilicon Materials

A process for increasing the hydrophobicity of a porous product by treating the product, or a composition providing for the product, with a water repellent material, characterised in that the porous product or a composition providing the product, is treated with an aqueous suspension of microcapsules where the microcapsules comprise a water repellent organosilicon core material selected from an organosilane, a partially condensed organosilane and a branched siloxane resin, and a shell of a silicon-based network polymer comprising silica units.

COMPOSITION FOR PREPARING HOLLOW PARTICLES, HOLLOW PARTICLES USING THE SAME AND METHOD OF MANUFACTURING THE HOLLOW PARTICLES

A composition for stably preparing a hollow particle by a coacervation method, a hollow particle prepared using a composition for preparing a hollow particle, and a method of preparing a hollow particle are disclosed. A mono-disperse hollow particle is stably provided by excellent coacervate forming capability, such that it is expected to be beneficially used as a carrier in various fields such as a cosmetic, a paint, plastic, rubber, a synthetic wood, a refractory material, and an agricultural chemical. 1. A composition for preparing a hollow particle , the composition comprising:a polyphenolic compound;a divalent iron ion;water; anda water-immiscible liquid.2. The composition of claim 1 , wherein the polyphenolic compound contains a catechol functional group.3. The composition of claim 1 , wherein the polyphenolic compound is selected from the group consisting of tannic acid claim 1 , gallic acid claim 1 , pyrogallol claim 1 , catechin claim 1 , epigallocatechin claim 1 , epicatechin claim 1 , catechin gallate claim 1 , epigallocatechin gallate claim 1 , epicatechin gallate claim 1 , catechol claim 1 , pyrocatechol claim 1 , and L-dopa.4. The composition of claim 1 , wherein the divalent iron ion is obtained from a ferrous salt source.5. The composition of claim 4 , wherein the ferrous salt source is selected from the group consisting of ferrous sulfate claim 4 , ferrous hydrochloride claim 4 , ferrous nitrate claim 4 , ferrous oxalate claim 4 , ferrous acetate claim 4 , ferrous propionate claim 4 , ferrous citrate claim 4 , ferrous lactate claim 4 , ferrous D-gluconate claim 4 , and a hydrate thereof.6. The composition of claim 1 , wherein the composition for preparing a hollow particle forms a hollow particle by contact with an oxidant in a range of pH 2.0 to 8.0.7. The composition of claim 6 , wherein the oxidant is selected from the group consisting of oxygen and ozone.8. The composition of claim 6 , further comprising a pro-oxidant.9. The composition of claim ...

METHOD OF ENCAPSULATING PARTICULATE MATERIAL

A method of encapsulating particulate materials. The method of encapsulating particulate materials may be used to multi coat a coated thermoplastic particle. The method includes providing an amount of acidified water in an amount to hydrolyze a pre-determined amount of alkoxysilane. A particulate thermoplastic material is dispersed within the acidified water. Once dispersed, an amount of alkoxysilane having a pre-determined formula is added and an amount of time is allowed to pass thereby allowing the alkoxysilane to hydrolyze and build a particle having a pre-determined particle size. Once the particle with pre-determined particle size has been obtained, the particles may be combined with alkoxysilane having a pre-determined formula and an amount of time is allowed to pass thereby allowing the alkoxysilane to hydrolyze and build a particle having a pre-determined particle size. This provides an encapsulated particulate material having one or more coatings thereon. 1. A method of encapsulating particulate materials , said method consisting of:a. providing acidified water at least sufficient for hydrolyzing a predetermined amount of alkoxysilane;b. thereafter, dispersing at least one type of particulate material in said acidified water; [{'br': None, 'sub': x', '4-x, 'RSi(OR′)'}, 'wherein R is selected from the group consisting essentially of alkyl groups, substituted alkyl groups, aryl groups, substituted aryl groups, vinyl, allyl, and hydrogen,', 'wherein the substituents are selected from the group consisting of fluorine, amino, hydroxy, and combinations thereof, and', 'wherein R′ is selected from hydrogen and alkyl groups of 1 to 4 carbon atoms;, 'c. thereafter, slowly adding a predetermined amount of alkoxysilane having the general formulad. thereafter, allowing sufficient time for said alkoxysilane to hydrolyze and build a predetermined particle size; [{'br': None, 'sub': x', '4-x, 'RSi(OR′)'}, 'wherein R is selected from the group consisting essentially of ...

Preparation of chemically and thermally stable isocyanate microcapsules and applications thereof

A DL microcapsule is formed that has a core-double layer shell structure with a liquid diisocyanate comprising molecule core and a double layer shell. The double layer shell has an inner layer comprising a polyurea (PU) and an outer layer comprising a poly(urea formaldehyde) foam (PUF). A self-healing coating is formulated from a multiplicity of DL microcapsules in a polymeric matrix. A polymer matrix can be formed by the polyaddition of an epoxy resin. A self-healing coated substrate is formed by applying the self-healing coating precursor that combines DL-microcapsules with an uncured polymeric resin as a dispersion on a substrate and curing the polymeric resin. The self-healing coated substrate is capable of resisting corrosion when abraded. The substrate can be any metal substrate, for example an iron or steel substrate. The polymeric resin can be an epoxy resin.

COMPOSITION WITH ANTI-SNORTING PROPERTIES AND METHOD THEREOF

A composition with anti-snorting properties comprising a liquid based formulation, a marine seaweed extract, a plurality of salts, cellulose, carbohydrate and a plurality of additives. 1. A composition with anti-snorting properties comprising:a liquid based formulation;a marine seaweed extract;a plurality of salts; cellulose; carbohydrate and a plurality of additives.2. The composition of claim 1 , wherein the liquid based formulation is selected from the group consisting of claim 1 , ethanol claim 1 , edible spirits claim 1 , juices claim 1 , extracts and medicines containing water or alcohol.3. The composition of claim 2 , wherein the edible spirits are selected from the group consisting of claim 2 , brandy claim 2 , fruit brandies claim 2 , ciders claim 2 , fermented teas claim 2 , wines claim 2 , beers claim 2 , horilkas claim 2 , liqueurs claim 2 , grain spirits claim 2 , pisco claim 2 , rice drinks claim 2 , tequila claim 2 , vodka claim 2 , gin claim 2 , rum claim 2 , whisky claim 2 , eau de vie claim 2 , baijiu claim 2 , soju claim 2 , aguardiente claim 2 , pálinka claim 2 , cachaça claim 2 , singani claim 2 , borovička claim 2 , slivovitz claim 2 , fenny claim 2 , arrack claim 2 , toddy claim 2 , sake claim 2 , fermented spirits claim 2 , Indian Made Foreign Liquor and ethanol.4. The composition of claim 1 , wherein the marine seaweed extract is selected from the group consisting of claim 1 , agar claim 1 , alginates claim 1 , gelatin and carrageenan.5. The composition of claim 1 , wherein the plurality of salts are selected from the group comprising of claim 1 , citrate claim 1 , phosphate claim 1 , chlorate claim 1 , sulphate or acetate salts of potassium claim 1 , sodium and calcium.6. The composition of claim 1 , wherein further plurality of additives are selected from the group consisting of claim 1 , sugars claim 1 , carbonates claim 1 , preservatives claim 1 , oleoresins claim 1 , flavors claim 1 , emulsifiers claim 1 , aromatic materials claim 1 , ...

SILICA-INCLUDING MICROCAPSULE RESIN PARTICLES, METHOD FOR PRODUCING SAME, AND APPLICATION THEREOF

Silica-including microcapsule resin particles including an outer shell constituted of a crosslinked polymer and a cavity partitioned with the outer shell, in which the silica-including microcapsule resin particles contain inside the cavity a porous structure in which silica particles are mutually connected, and have a volume average particle diameter of 0.5 to 100 μm. 1. Silica-including microcapsule resin particles , comprising:an outer shell constituted of a crosslinked polymer; anda cavity partitioned with said outer shell,wherein said silica-including microcapsule resin particles contain inside said cavity a porous structure in which silica particles are mutually connected, and have a volume average particle diameter of 0.5 to 100 μm.2. The silica-including microcapsule resin particles according to claim 1 , wherein said porous structure has a weight that is 5 to 50% of a total weight of said silica-including microcapsule resin particles claim 1 , and gives a hollow structure to said cavity.3. The silica-including microcapsule resin particles according to claim 1 , wherein said outer shell is porous.4. The silica-including microcapsule resin particles according to claim 1 , wherein said outer shell is porous claim 1 , and said silica-including microcapsule resin particles have an oil absorption of 150 to 500 ml/100 g.5. The silica-including microcapsule resin particles according to claim 1 , wherein said outer shell is non-porous claim 1 , and said silica-including microcapsule resin particles have an apparent specific gravity of 0.3 to 1.0 g/cm.6. A method for producing the silica-including microcapsule resin particles as defined in claim 1 , the method comprising the steps of:suspension polymerizing a mixture containing 100 parts by weight of a radical polymerizable monofunctional monomer, 20 to 80 parts by weight of a crosslinking monomer, and 60 to 200 parts by weight of silicone alkoxide as a silica precursor in presence of a radical polymerization ...

PROCESS FOR PREPARING AN AQUEOUS DISPERSION OF PIGMENT CONTAINING PARTICLES

A process for preparing an aqueous dispersion of pigment particles is described. The pigment particle contains a pigment and an aminoplast resin which surrounds or embeds the pigment. The process includes (i) a step of subjecting an aqueous suspension of a pigment in the form of coarse particles to milling so that the coarse particles are comminuted in the presence of a polymeric dispersant to a particle diameter d(v 0.9) of below 1500 nm, as determined by laser diffraction; and (ii) a step of polycondensation of an aminoplast pre-condensate in the aqueous suspension of the comminuted particles of the pigment obtained in step (i) or during the milling of step (i). The polycondensation is performed in the presence of an acid catalyst at pH of below 5.5. The aqueous dispersion obtained by the process and the use of the aqueous dispersion for tinting waterborne liquid coating composition are also described. 115-. (canceled)16: A process for preparing an aqueous dispersion of pigment-polymer particles containing an organic pigment and an aminoplast resin which surrounds or embeds the organic pigment , the process comprising:i) subjecting an aqueous suspension of an organic pigment in the form of coarse particles to milling in order to comminute the coarse particles in the presence of a polymer dispersant to a particle diameter d(v 0.9) of below 1500 nm, as determined by laser scattering;ii) performing a polycondensation of an aminoplast pre-condensate in the aqueous suspension obtained in i) or during the milling of i), thereby obtaining the aqueous dispersion of pigment-polymer particles;wherein the polycondensation is performed in the presence of an acid catalyst at pH of below 5.5.17: The process of claim 16 , wherein the aminoplast pre-condensate is selected from the group consisting of a melamine formaldehyde pre-condensate claim 16 , a urea formaldehyde pre-condensate claim 16 , and a mixture thereof.18: The process of claim 17 , wherein the aminoplast pre- ...

MICROSPHERES CONTAINING THERAPEUTIC AGENTS AND RELATED METHODS OF USE

Microspheres, compositions including the microspheres, and methods of using the microspheres are disclosed herein. The microspheres can be substantially spherical and can include a copolymer of a monomer (such as an acrylic monomer) and a cyclodextrin or a derivative thereof. The microspheres can also include a therapeutic agent, such as a platinum-based drug. 1. Microspheres suitable for use in therapeutic embolization , comprising: one or more monomers selected from the group consisting of acrylic monomers, acrylamide monomers, vinyl monomers, or derivatives thereof;', 'a monomer comprising an alkyne functional group; and', 'a cyclodextrin or a derivative thereof; and, 'a biocompatible, polymeric material comprising a copolymer comprisinga therapeutic agent,wherein the copolymer comprises between about 10% and about 90% by weight of the one or more monomers, and between about 10% and about 90% by weight of the cyclodextrin.2. The microspheres of claim 1 , wherein the copolymer comprises an acrylamide or a derivative thereof claim 1 , wherein the acrylamide is selected from methacrylamide claim 1 , N-[tris(hydroxymethyl)methyl]acrylamide claim 1 , N claim 1 ,N′-methylenebis(acrylamide) claim 1 , and derivatives and combinations thereof.3. The microspheres of claim 1 , wherein the cyclodextrin is selected from α (alpha)-cyclodextrins claim 1 , β (beta)-cyclodextrins claim 1 , γ (gamma)-cyclodextrins claim 1 , and derivatives and combinations thereof.4. The microspheres of claim 1 , wherein the cyclodextrin or a derivative thereof is incorporated onto the microsphere after polymerization of the one or more monomers and the monomer comprising an alkyne functional group.5. The microspheres of claim 1 , wherein the polymeric material is cross-linked.6. The microspheres of claim 1 , wherein the microspheres comprise a biodegradable portion and a non-biodegradable portion claim 1 , wherein the biodegradable portion comprises the cyclodextrin or a derivative thereof claim ...

METHOD FOR PREPARING CAPSULES WITH IMPROVED RETENTION PROPERTIES AND CAPSULES OBTAINED THEREFROM

The present invention relates to a capsule preparation method for preparing solid microcapsules, comprising the following steps: 1. A method for preparing solid microcapsules , the said solid microcapsules comprising in particular a core containing at least one active ingredient and a solid enveloping shell that completely encapsulates at its periphery the said core , the said solid enveloping shell comprising pores that are less than 1 nm in size;said method comprising the following steps:a) adding, under agitation, of a composition C1, comprising at least one active ingredient, in a polymeric composition C2, the compositions C1 and C2 being immiscible with each other, the volume fraction of C1 in C2 being comprised between 0.1 and 0.5;{'sup': −1', '−1', '−1', '−1, 'the composition C2 comprising at least one monomer or polymer having an average molecular weight of less than 5000 g.mol, at least one crosslinking agent having an average molecular weight of less than 5000 g.mol, and optionally at least one photoinitiator having an average molecular weight of less than 5000 g.molor a crosslinking catalyst having an average molecular weight of less than 5000 g.mol;'}{'sup': 'at', 'the viscosity of the composition C2 being comprised between 500 mPa·s and 100,000 mPa·s 25° C.;'}wherein an emulsion (E1) is obtained comprising droplets of the composition C1 dispersed in the composition C2;b) adding, under agitation, of the emulsion (E1) in a composition C3, the compositions C2 and C3 being immiscible with each other;the viscosity of the composition C3 being comprised between 500 mPa·s and 100,000 mPa·s at 25° C.;wherein a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3;c) applying a shear to the emulsion (E2);wherein a double emulsion (E3) is obtained comprising size controlled droplets dispersed in the composition C3; andd) polymerizing the composition C2, wherein solid microcapsules dispersed in the composition C3 are obtained.2. The ...

NUTRIENT-CONTAINING POROUS BIODEGRADABLE BEAD

The present disclosure relates to a nutrient-containing porous biodegradable bead comprising the following components: an Aloe Vera and cellulose composite matrix containing a nutrient solution including, but not limited to, nitrogen, phosphorus, potassium, sodium alginate, and calcium chloride. 1. A biopolymer-base capsule , comprising: a capsule , said capsule comprising a shell , wherein said shell encapsulates a plurality of substances;wherein said shell is a biopolymer base matrix comprising a combination of sodium alginate and calcium chloride;wherein sodium alginate is at least 1%-5% by weight of the capsule and wherein calcium chloride is at least 1%-5% by weight of the capsule.2. The biopolymer-base capsule of claim 1 , wherein a first substance of said plurality of substances is water and a second substance of said plurality of substances is a fertilizing material comprising an effective combination of Nitrogen claim 1 , Phosphorus claim 1 , and Potassium.3. The biopolymer-base capsule of claim 2 , wherein Nitrogen is at least 0.033% by weight of the capsule claim 2 , Phosphorus is at least 0.033% by weight of the capsule claim 2 , and Potassium is at least 0.033% by weight of said capsule.4. The biopolymer-base capsule of claim 1 , wherein said shell comprises a plurality of biopolymer base matrices claim 1 , wherein a first biopolymer base matrix includes a combination of Aloe Vera and cellulose and a second biopolymer base matrix includes a combination of sodium alginate and calcium chloride claim 1 , wherein Aloe Vera is at least 5.5% by weight of the capsule claim 1 , wherein cellulose is at least 5.5% by weight of the capsule claim 1 , wherein sodium alginate is at least 1% by weight of the capsule claim 1 , and wherein calcium chloride is at least 1% by weight of the capsule.5. The biopolymer-base capsule of claim 4 , wherein said first biopolymer base matrix surrounds said second biopolymer base matrix and said first biopolymer base matrix is the ...

SELF-INFLATING MICROCAPSULES

A method comprises providing an aqueous solution having an alkaline pH and providing an oil including at least one silsesquioxane compound. The oil is added to the aqueous solution. The oil forms a plurality of silsesquioxane oil droplets suspended in the aqueous solution such that an internal osmotic pressure is generated inside the oil droplets via a chemical reaction. The aqueous solution is allowed to osmotically diffuse into the plurality of oil droplets for a predetermined time. The silsesquioxane oil droplets are polymerized by cross-linking the at least one silsesquioxane compound included in the silsesquioxane oil droplets to form a plurality of solidified microcapsules containing the aqueous solution therewithin. 1. A method , comprising:providing an aqueous solution having an alkaline pH;providing an oil including at least one silsesquioxane compound;adding the oil to the aqueous solution, the oil forming a plurality of silsesquioxane oil droplets suspended in the aqueous solution, the adding generating an internal osmotic pressure inside the oil droplets by means of a chemical reaction;allowing the aqueous solution to osmotically diffuse into the plurality of silsesquioxane oil droplets for a predetermined time; andpolymerizing the silsesquioxane oil droplets by cross-linking the at least one silsesquioxane compound included in the silsesquioxane oil droplets to form a plurality of solidified microcapsules containing the aqueous solution therewithin.2. The method of claim 1 , wherein the silsesquioxane compound includes at least one of a hydrolysable silane monomer and a low molecular weight silsesquioxane oligomer.4. The method of claim 1 , wherein allowing the aqueous solution to osmotically diffuse into the oil droplets inflates the oil droplets.5. The method of claim 1 , wherein the chemical reaction includes a base catalyzed hydrolysis.6. The method of claim 1 , further comprising:dissolving a compound in the aqueous solution,wherein the diffusing ...

Delivery Particles

The present application relates to encapsulated benefit agents, compositions comprising such encapsulated benefit agents and processes for making and using compositions comprising such encapsulated benefit agents. Such encapsulated benefit agents eliminate or minimize one or more of the drawbacks of current encapsulated benefit agents and thus provide formulators with additional perfume delivery opportunities.

Methods of Generating Microparticles and Porous Hydrogels Using Microfluidics

Provided herein are methods utilizing microfluidics for the oxygen-controlled generation of microparticles and hydrogels having controlled microparticle sizes and size distributions and products from provided methods. The included methods provide the generation of microparticles by polymerizing an aqueous solution dispersed in a non-aqueous continuous phase in an oxygen-controlled environment. The process allows for control of size of the size of the aqueous droplets and, thus, control of the size of the generated microparticles which may be used in biological applications. 1. A method of preparing a plurality of microparticles in a microfluidics device in an oxygen-controlled environment comprising the steps of:(a) providing a continuous phase comprising a non-aqueous liquid and a dispersed phase comprising an aqueous solution comprising a monomer or a macromer, and an initiator;(b) forming a composition comprising microdroplets of said aqueous phase and said non-aqueous liquid;(c) purging said composition comprising said microdroplets and the non-aqueous liquid with an oxygen-free gas; and(d) polymerizing said monomer or said macromer in said microdroplets to form microparticles.2. The method of claim 1 , wherein said oxygen-free gas is nitrogen.3. The method of claim 1 , wherein said oxygen-free gas is provided at a pressure selected from the range of 0.1 atm to 10 atm.45-. (canceled)65. The method of claim claim 1 , where said initiator is a photoinitiator and said step of polymerizing said monomer or macromer is carried out in the presence of ultraviolet light.7. The method of claim 6 , wherein said photoinitiator is lithium phenyl-2 claim 6 ,4 claim 6 ,6-trimethylbenzoylphosphinate (LAP) or Irgacure 1173.8. (canceled)9. The method of claim 1 , wherein said non-aqueous liquid comprises a fluorocarbon oil.10. The method of claim 9 , wherein said fluorocarbon oil is a segregated hydrofluoroether.11. (canceled)12. The method of claim 1 , wherein said non-aqueous ...

HOLLOW PARTICLES AND USE THEREOF

Hollow particles having a shell including at least one layer, wherein the at least one layer contains a vinyl-based resin, and contains a phosphorus atom and/or a sulfur atom. 110-. (canceled)11. Hollow particles comprisinga shell including at least one layer contains a vinyl-based resin and a phosphorus atom,wherein said phosphorus atom exhibits a content of 0.2 to 5.00% by mass by fluorescent X-ray analysis, andwherein said hollow particles have an average particle diameter of 10 to 150 nm.12. The hollow particles according to claim 11 ,{'sup': −1', '−1, 'wherein when a ratio α (absorbance ratio α: A810/A1720) between absorbance at 810 cm(A810) and absorbance at 1720 cm(A1720) is calculated from an infrared absorption spectrum obtained by measuring said hollow particles by ATR-FTIR, said hollow particles exhibit an absorbance ratio α of 0.015 to 0.50.'}13. The hollow particles according to claim 11 ,wherein said vinyl-based resin is an organic-inorganic hybrid vinyl-based resin containing a silicon component.15. A dispersion liquid comprising the hollow particles according to .16. A coating agent comprising the hollow particles according to .17. A heat-insulating film comprising the hollow particles according to .18. A laminate comprising at least a substrate claim 11 , and a cured resin layer containing the hollow particles according to claim 11 ,wherein when subjected to a bend test (cylindrical mandrel method) described in JIS K5600-5-1: 1999, said cured resin layer has such a bending resistance that said cured resin layer begins to crack at a mandrel diameter of 8 mm or less.19. Hollow particles comprisinga shell including at least one layer contains a vinyl-based resin and a sulfur atom,wherein said sulfur atom exhibits a content of 0.2 to 5.00% by mass by fluorescent X-ray analysis, andwherein said hollow particles have an average particle diameter of 10 to 150 nm.20. The hollow particles according to claim 19 ,{'sup': −1', '−1, 'wherein when a ratio α ( ...

DELIVERY PARTICLE

The present application relates to encapsulated benefit agents, compositions comprising such encapsulated benefit agents and processes for making and using compositions comprising such encapsulated benefit agents. Such encapsulated benefit agents eliminate or minimize one or more of the drawbacks of current encapsulated benefit agents and thus provide formulators with additional perfume delivery opportunities. 132.-. (canceled)33. A composition comprising an adjunct ingredient and , based on total composition weight , from about 0.1% to about 50% , of particles , each particle comprising: 'said partitioning modifier comprising a material selected from the group consisting of isopropyl myristate; castor oil; mineral oil; triethyl citrate; paraffin oil; capryllic triglyceride; soybean oil; and mixtures thereof; and', 'a) a core that comprises, based on total particle weight, from about 6% to about 99.9% of a benefit agent and from about 0.1% to about 94% of a partitioning modifier,'}b) a shell that encapsulates said core, said shell comprising, based on total shell weight, from about 50% to about 100% a polyacrylate;wherein said benefit agent and said partitioning modifier are different materials;wherein said benefit agent comprises a material selected from the group consisting of perfumes; brighteners; dye polymer conjugate; dye clay conjugate; perfume delivery system; dyes; pigments; bleaches; and mixtures thereof.34. The composition of claim 33 , wherein said benefit agent comprises perfumes.35. The composition of claim 33 , wherein said adjunct ingredient comprises member selected from the group consisting of a humectant claim 33 , a suspending agent claim 33 , a dye claim 33 , a pigment claim 33 , and mixtures thereof.36. The composition of claim 33 , wherein said composition further comprises a member selected from the group consisting of a pH adjusting agent claim 33 , a antimicrobial agent claim 33 , an antifoam agent claim 33 , a surfactant claim 33 , a clay ...

A PROCESS FOR PREPARING AN AQUEOUS DISPERSION OF MICROPARTICLES

Provided herein is a process for preparing an aqueous dispersion of microparticles containing a water-insoluble, solid, non-polymeric, organic active or functional material (M) and an aminoplast resin (A) which surrounds or embeds material (M). The process includes the following steps: i) providing an aqueous slurry of the material (M) in the form of coarse particles; ii) subjecting the aqueous slurry to shear forces such that the coarse particles of the material (M) are comminuted and an aqueous suspension of fine particles of the material (M) is obtained; and iii) performing a polycondensation of an aminoplast pre-condensate during step (ii) or in the aqueous suspension of the fine particles of the material (M) obtained in step (ii); wherein step (ii) is performed in the presence of at least one protective colloid and in the presence of at least a portion of the aminoplast pre-condensate subjected to the polycondensation of step (iii). 1. A process for preparing an aqueous dispersion of microcapsules containing a solid organic material selected from agriculturally active compounds and an aminoplast resin that surrounds or embeds the solid organic material , the process comprising the following steps:i. providing an aqueous slurry of a solid material in a form of coarse particles;ii. subjecting the aqueous slurry to shear forces in order to comminute the coarse particles, wherein an aqueous suspension of fine particles of the solid organic material is obtained; andiii. performing a polycondensation of an aminoplast pre-condensate in the aqueous suspension obtained in step ii;wherein the subjecting the aqueous slurry to shear forces of step ii is performed in the presence of at least one protective colloid and at least a portion of the aminoplast pre-condensate subjected to the polycondensation of step iii.2. The process of claim 1 , wherein the aminoplast pre-condensate is selected from the group consisting of melamine formaldehyde pre-condensates claim 1 , urea ...

Custom-Tailored Sol-Gel Derived Matrixes for Chemical Immobilization

A process for preparing microcapsules has an interconnected porous microsphere matrix The matrix includes at least one metal oxide and/or inorganic polymer. The microcapsules are obtained by a sol-gel process which involves preparing a first solution being a water-in-oil emulsion and adding to the emulsion a second acidic aqueous pre-hydrolyzed metal precursor solution and/or an organic polymer solution.

MICROCAPSULES HAVING ACRYLIC POLYMERIC SHELLS AND METHODS OF MAKING SAME

Microcapsules are described that include a hydrophobic core material within an acrylic polymeric shell that was polymerized from a monomeric blend that includes a mono-functional acrylic monomer as less than 25% by weight of the monomeric blend and a hyperbranched polyester acrylic oligomer as the balance of the monomeric blend, and methods of making the same. The methods include a two-stage polymerization process where the monomeric blend is polymerized with an azo-initiator in a first stage polymerization reaction and is subsequently further polymerized with a water soluble initiator in a second stage polymerization reaction. 1. A method for producing microcapsules , the method comprising:emulsion polymerizing, in a first stage, an organic phase comprising core material and acrylic monomers as wall material, the wall material being polymerized with an azo-initiator thereby forming a polymerized intermediate in capsule form; andpolymerizing further, in a second stage, the polymerized intermediate by addition of a water soluble initiator to form microcapsules.2. The method of claim 1 , wherein the water soluble initiator includes persulfate claim 1 , water soluble azo-initiators claim 1 , or combinations thereof.3. The method of claim 1 , wherein the second stage further comprises:titrating the water soluble initiator as an aqueous solution into the polymerized intermediate.4. The method of claim 3 , further comprising claim 3 , subsequent to titrating:heating to a cure temperature, and thereafter cooling to terminate the polymerization reaction.5. The method of claim 1 , wherein the first stage further comprises: at least one di-functional crosslinking acrylic monomer or mono-functional acrylic monomer; or', 'at least one each of a di-functional crosslinking acrylic monomer and a mono-functional acrylic monomer to form a monomeric blend; and', 'mixing the monomeric blend in an aqueous polymer solution to form an emulsion of oil droplets., 'blending at least one ...

MULTI-COMPONENT FRAGRANCE DISPENSING APPARATUS

The present invention relates to a multi-component fragrance dispensing apparatus comprising at least an aqueous based composition and a volatile solvent based composition, wherein the apparatus comprises two separate containers, two separate non-spray dispensers, and one exit orifice therein. Methods of using the apparatus for providing a longer lasting fragrance is also encompassed by the present invention. 1. A portable multi-fragrance compositional dispensing system comprising at least an aqueous based composition and a volatile solvent based composition , wherein the system comprises at least two separate containers , wherein:(a) a first container that contains the aqueous based composition, and a first dispenser operably connected to the first container and incorporating a first exit orifice, wherein the first dispenser is in fluid communication with the contained aqueous based composition and is a spray dispenser or a non-spray dispenser, and wherein the aqueous based composition comprises from about 0.1 wt % to about 95 wt % of water and from about 0.01 wt % to about 50 wt % of a plurality of microcapsules, wherein the wt % is by weight of the total aqueous based composition; and(b) a second container that contains the volatile solvent based composition, and a second dispenser operably connected to the second container and incorporating a second exit orifice, wherein the second dispenser is in fluid communication with the contained volatile solvent based composition and is a spray dispenser or a non-spray dispenser, and wherein the volatile solvent based composition comprises from about 0.01 wt % to about 98 wt % of a volatile solvent and from about 0.01 wt % to about 30 wt % of a first fragrance material, wherein the wt % is by weight of the total volatile solvent based composition.2. The portable multi-fragrance compositional dispensing system according to claim 1 , wherein:(i) the first dispenser is a spray dispenser and the second dispenser is a non- ...

Microcapsules Modified with Nanomaterial for Controlled Release of Active Agent and Process for Preparation Thereof

The present invention disclosed a microcapsule modified with nanomaterial for controlled release of active agent comprising; a core comprising active agent and said polymer shell encompassing said core; characterized in that said polymer shell is made up of polymer nanocomposite and a process for the preparation thereof. 2. The microcapsule as claimed in claim 1 , said active agent is water-insoluble and is selected from the group consisting of perfume claim 1 , pharmaceutical claim 1 , insect repellent claim 1 , self-healing agent claim 1 , flavouring agent claim 1 , pesticide claim 1 , enzyme claim 1 , biocide claim 1 , insect pheromone and industrial chemical reagent.3. The microcapsule as claimed in claim 1 , wherein said active agent is selected from dimethyl the group consisting of phthalate claim 1 , Jasmine oil and quinalphos.4. The microcapsule as claimed in claim 1 , wherein said polymer is selected from polyurea claim 1 , polyurethane claim 1 , polyester claim 1 , polyamide and is prepared by in-situ polymerization such as polycondensation or polyaddition method during the process of making microcapsules.5. The microcapsule as claimed in claim 1 , wherein said nanomaterial is selected from the group consisting of graphene oxide claim 1 , carbon nanofibers claim 1 , carbon nanotubes such as multi-walled carbon nanotubes (MWCNT) claim 1 , modified multi-walled carbon nanotubes (MWCNT) and nanoclay such as Montmorillonite (MMT) claim 1 , Laponite claim 1 , Hectorite claim 1 , Saponite claim 1 , Fluorohectorite claim 1 , Fluoromica Kaolinite claim 1 , Halloysite claim 1 , and Cloisite Na.7. The process as claimed in claim 6 , wherein aqueous medium is water.8. The process as claimed in claim 6 , wherein said polyisocyanate is selected from the group consisting of 2 claim 6 ,4- and 2 claim 6 ,6-toluene diisocyanate (TDI) claim 6 , naphthalene diisocyanate claim 6 , diphenyl methane diisocyanate claim 6 , triphenyl methane-p claim 6 ,p′p″-trityl triisocyanate ...

Microencapsulation process

A microencapsulation process in which wall forming materials in a dispersed phase are polymerized to form a seed microcapsule after which an initiator or catalyst in the continuous phase is initiated or activated to effect, in whole or in part, full polymerization of the wall forming material of the dispersed phase.

Extracellular vesicle separation method, colloidal particle and preparation method thereof

An extracellular vesicle separation method, a colloidal particle, and a preparation method thereof are provided. The colloidal particle is used for extracellular vesicle separation, and includes 2 wt % to 6 wt % of agarose. The colloidal particle has a particle size of 25 μm to 500 μm, and is surface-modified with biocompatible molecules. The biocompatible molecules include sodium carboxymethyl cellulose (CMC), methyl cellulose (MC), glycine, aspartic acid, glutamic acid, bovine serum albumin (BSA), fetal bovine serum (FBS), or a combination thereof.

METHOD FOR MANUFACTURING TRACER-ENCAPSULATED SOLID PELLET FOR MAGNETIC-CONFINEMENT FUSION

The present invention relates to a method for manufacturing a tracer-encapsulated solid pellet for magnetic-confinement fusion, the method comprising a liquid droplet formation step of discharging an organic liquid containing an organic solvent into a stabilizing liquid to thereby form liquid droplets , and an organic solvent removal step of removing the organic solvent from the liquid droplets A. The organic liquid to be used is a liquid having a first organic polymer containing tracer atoms and a second organic polymer being an organic polymer different from the first organic polymer dissolved in the organic solvent, wherein the first organic polymer and the second organic polymer can be mutually phase-separated. 1. A method for manufacturing a tracer-encapsulated solid pellet for magnetic-confinement fusion , the method comprising:a liquid droplet formation step of discharging an organic liquid comprising an organic solvent into a stabilizing liquid to thereby form a liquid droplet; andan organic solvent removal step of removing the organic solvent from the liquid droplet,wherein the organic liquid is a liquid having a first organic polymer comprising a tracer atom and a second organic polymer being an organic polymer different from the first organic polymer dissolved in the organic solvent; andthe first organic polymer and the second organic polymer can be mutually phase-separated.2. The method for manufacturing a tracer-encapsulated solid pellet for magnetic-confinement fusion according to claim 1 , wherein:the organic liquid has a first organic liquid and a second organic liquid prepared separately from each other;the first organic liquid comprises the first organic polymer;the second organic liquid comprises the second organic polymer; andin the liquid droplet formation step, by using a combined nozzle equipped with a first nozzle and a second nozzle having a discharge port surrounding a discharge port of the first nozzle, the first organic liquid and the ...

SILICA COATING ON NANOPARTICLES

This invention relates to a method for synthesizing a SiO2-coated nanoparticle, the method comprising the step of reacting a hydroxyl-functionalised silane with a nanoparticle in a substantially aqueous phase under conditions to induce silanization of the nanoparticle. The method enables silanization of the nanoparticle in aqueous phase that is substantially free of organic solvents. 1. A method for synthesizing a SiO-coated nanoparticle , the method comprising steps of: [{'br': None, '[Math. 1]'}, {'br': None, 'sup': '1', 'sub': 2', 'n', '3, 'R—(CH)—Si(OH)\u2003\u2003Formula (I)'}], 'reacting a hydroxyl-functionalised silane having the following formula (I)'}{'sup': '1', 'wherein Ris selected from the group consisting of amino, glycidyl, mercapto and any mixture thereof; and'}n is an integer from 1 to 10;with a nanoparticle in a substantially aqueous phase and subsequently adding an aqueous ammonia solution under conditions to induce silanization of the nanoparticle.2. The method according to claim 1 , wherein the substantially aqueous phase comprises less than 5% (v/v) organic solvent or is substantially free of organic solvent.3. (canceled)4. The method according to claim 1 , wherein the substantially aqueous phase is substantially water.5. (canceled)6. The method according to claim 1 , wherein Ris mercapto.7. The method according to claim 1 , wherein n is 3.8. The method according to claim 1 , wherein the hydroxyl-functionalised silane is formed by the hydrolysis of a silane precursor.9. The method according to claim 8 , wherein the hydrolysis is performed by mixing the silane precursor with substantially water to form the hydroxyl-functionalised silane.10. The method according to claim 8 , wherein the silane precursor has the following formula (II):{'br': None, '[Math. 2]'}{'br': None, 'sup': 1', '2, 'sub': 2', 'n', '3, 'R—(CH)—Si(OR)\u2003\u2003Formula (II)'}{'sup': '1', 'wherein Ris selected from the group consisting of amino, glycidyl, mercapto and mixture ...

AQUEOUS DISPERSION, METHOD FOR MANUFACTURING THE SAME, AND IMAGE FORMING METHOD

Provided are an aqueous dispersion, a method for manufacturing the aqueous dispersion, and an image forming method in which the image is formed of the aqueous dispersion, the aqueous dispersion including a microcapsule that has a shell having a three-dimensional cross-linked structure containing a urethane bond and/or urea bond, and has a core, in which the shell and/or core has a polymerizable group; a dispersant in which a urethane bond and/or urea bond and an anionic group are contained, a weight-average molecular weight is 5000 or more, and an anionic group value, which is the number of millimoles of the anionic group contained in 1 g of the dispersant, is from 0.10 to 2.50 mmol/g; and water. 1. An aqueous dispersion comprising:a microcapsule that includes a shell having a three-dimensional cross-linked structure containing at least one bond selected from a urethane bond or a urea bond, and includes a core, in which at least one of the shell or the core has a polymerizable group;a dispersant in which at least one bond selected from a urethane bond or a urea bond, and an anionic group are contained, a weight-average molecular weight is 5000 or more, and an anionic group value, which is the number of millimoles of the anionic group contained in 1 g of the dispersant, is from 0.10 mmol/g to 2.50 mmol/g; andwater.4. The aqueous dispersion according to claim 3 ,{'sup': 'A1', 'wherein the divalent hydrocarbon group represented by Rin Structural Unit (A) contains a cyclic structure.'}5. The aqueous dispersion according to claim 2 ,{'sup': 'C1', 'wherein C log P of the compound HRH is 3.00 or more.'}6. The aqueous dispersion according to claim 2 ,{'sup': 'C1', 'wherein Rin Structural Unit (C) is a divalent polyalkyleneoxy group in which two hydroxy groups are removed from polyalkylene glycol, a divalent polycarbonate group in which two hydroxy groups are removed from polycarbonate diol, a divalent polyester group in which two hydroxy groups are removed from polyester ...

METHOD FOR PREPARING BIODEGRADABLE CAPSULES AND CAPSULES OBTAINED

The present invention relates to a method for preparing solid microcapsules, comprising the following steps a) adding, with stirring, a composition C1 to a polymeric composition C2 comprising at least one aliphatic or aromatic ester or polyester, additionally bearing at least one function selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, epoxy, siloxane, amine, lactone, phosphate and carboxylate functions and mixtures thereof, whereby an emulsion (E1) is obtained comprising droplets of composition C1 dispersed in a composition C2; b) adding, with stirring, the emulsion (E1) to a composition C3 whereby a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3; c) applying shear to the emulsion (E2) whereby a double emulsion (E3) is obtained comprising droplets of controlled size dispersed in the composition C3; and d) polymerizing the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained. 1. A method for preparing solid microcapsules , comprising the following steps: [ at least one monomer or polymer selected from the group consisting of: aliphatic or aromatic esters or polyesters, anhydrides or polyanhydrides, saccharides or polysaccharides, ethers or polyethers, amides or polyamides and carbonates or polycarbonates, additionally carrying at least one function selected from the group consisting of: acrylate, methacrylate, vinyl ether, N-vinyl ether, epoxy, siloxane, amine, lactone, phosphate, carboxylate functions, and mixtures thereof,', 'at least one crosslinking agent, and', 'optionally at least one photoinitiator or crosslinking catalyst,, 'the viscosity of composition C2 being between 500 mPa·s and 100000 mPa·s at 25° C., composition C2 comprising, 'after which an emulsion (E1) is obtained comprising droplets of composition C1 dispersed in composition C2;, 'a) under stirring, adding a composition C1 comprising at least one active ingredient to a polymeric ...

MAGNETIC NANOCAPSULES AS THERMOLATENT POLYMERIZATION CATALYSTS OR INITIATORS

The present invention relates to a process for producing nanocapsules employable as thermo latent polymerization catalysts, in particular for the polymerization of polyurethanes, by means of a high shear process, wherein the process comprises: (i) emulsifying a first reaction mixture (a) in a continuous aqueous phase comprising at least one stabilizer; (ii) emulsifying a second reaction mixture (b) in a continuous aqueous phase comprising at least one stabilizer; (iii) combining the first reaction to the nanocapsules produced by means of the described processes, to the use thereof, and to agents which contain these nanocapsules. 1. A process for the preparation of nanocapsules containing magnetic nanoparticles , comprising:(A) (i) emulsifying a first reaction mixture (a) into a continuous aqueous phase, which comprises at least one stabilizer, about 10.0 to 99.0 wt.-% of a monomer mixture, the monomer mixture comprising, based on the total weight of the monomer mixture:{'sub': '3-5', '(a1) 2.5 to 19.0 wt.-%, of at least one monoethylenically unsaturated C-carboxylic acid monomer;'}{'sub': 3-5', '1-10, '(a2) 76.0 to 97.5 wt.-%, of at least one monoethylenically unsaturated C-carboxylic acid C-alkyl ester monomer; and'}(a3) 0.0 to 5.0 wt.-%, of at least one monomer which carries at least two ethylenically unsaturated groups;(ii) emulsifying a second reaction mixture (b) into a continuous aqueous phase, which comprises at least one stabilizer, wherein the second reaction mixture, based on the total weight of the second reaction mixture, comprises:(b1) 1.0 to 80.0 wt.-%, magnetic nanoparticles whose surface is hydrophobized; and(b2) optionally 0.0 to 70.0 wt.-% of at least one polymerization catalyst or initiator; and(b3) optionally 0.0 to 89.0 wt.-% of at least one hydrophobic releasing agent; and(b4) optionally 0.0 to 10.0 wt.-% of at least one ultrahydrophobic compound other than the release agent;(iii) combining the first reaction mixture of step (i) and the second ...

METHOD FOR CONTINUOUSLY MANUFACTURING AN AEROGEL POWDER HAVING A HYDROPHOBIC-HYDROPHILIC BIPOLAR CORE-SHELL STRUCTURE

A method for producing an aerogel granule having a hydrophobic-hydrophilic bipolar core-shell structure combines an aerogel precursor having a hydrophilic structure with another aerogel precursor having a hydrophobic structure. The method comprises the steps of: mixing a hydrophilic alkoxysilane compound, a hydrophobic alkyl-substituted alkoxysilane compound, and an organic solvent to form a mixture; adding an acidic catalyst to the mixture to perform hydrolysis; adding a basic catalyst to the hydrolyzed mixture to perform condensation, and during the condensation adding a dispersion solvent to the hydrolyzed mixture and stirring the hydrolyzed mixture to gelate so as to form the aerogel granule having a hydrophobic-hydrophilic bipolar core-shell structure. 1. A method for manufacturing an aerogel powder having a hydrophobic-hydrophilic bipolar core-shell structure , comprising:mixing a hydrophilic alkoxysilane compound, a hydrophobic alkyl-substituted alkoxysilane compound, and an organic solvent to form a mixture;adding an acidic catalyst to the mixture to perform hydrolysis;adding a basic catalyst to the hydrolyzed mixture to perform condensation, and during the condensation adding a dispersion solvent to the hydrolyzed mixture and stirring the hydrolyzed mixture to gelate so as to form the aerogel granule;wherein while the aerogel granule is an aerogel granule having a hydrophobic outer shell and a hydrophilic inner core, before the condensation nears completion, the hydrolyzed mixture becomes a viscous sol, a hydrophobic dispersion solvent is added to the hydrolyzed mixture, and the hydrolyzed mixture is stirred so that the hydrolyzed mixture gelates under dispersion force caused by the hydrophobic dispersion solvent to present a hydrophobic group on an outer surface of the aerogel granule and a hydrophilic group in an inner of the aerogel granule;wherein while the aerogel granule is an aerogel granule having a hydrophilic outer shell and a hydrophobic inner ...

PROCESS FOR PRODUCING HEAT-EXPANDABLE MICROSPHERES AND APPLICATION THEREOF

A process for producing heat-expandable microspheres which enables constant and high-yield production of heat-expandable microspheres having a mean particle size ranging from 0.01 to 10 μm without deteriorating their expansion performance, and the application thereof. The process produces heat-expandable microspheres containing a thermoplastic resin shell and the blowing agent encapsulated therein. The process includes a step of dispersing a polymerizable component and the blowing agent in an aqueous dispersion medium containing a polyester amide having an acid value (mgKOH/g) ranging from 95 to 140 and a step of polymerizing the polymerizable component. 1. A process for producing heat-expandable microspheres comprising a thermoplastic resin shell and a blowing agent encapsulated therein , the process comprising dispersing a polymerizable component and the blowing agent in an aqueous dispersion medium containing a polyester amide having an acid value (mgKOH/g) ranging from 95 to 140 and polymerizing the polymerizable component , wherein the heat-expandable microspheres have a mean particle size ranging from 0.01 to 10 μm.2. The process for producing the heat-expandable microspheres as claimed in claim 1 , wherein the polyester amide is obtained from reaction of a carboxylic acid having at least two carboxyl groups and an amino alcohol having at least one amino group and two hydroxyl groups.3. The process for producing the heat-expandable microspheres as claimed in claim 1 , wherein the polyester amide has an amine value (mgKOH/g) ranging from 20 to 60.4. The process for producing the heat-expandable microspheres as claimed in claim 1 , wherein the amount of the polyester amide in the aqueous dispersion medium ranges from 0.0001 to 5 parts by weight to 100 parts by weight of the total of the polymerizable component and blowing agent.5. The process for producing the heat-expandable microspheres as claimed in claim 1 , wherein the carboxylic acid having at least two ...

PROCESS FOR THE PREPARATION OF MICROCAPSULES FREE FROM MELAMINE-FORMALDEHYDE

The present invention relates to a new process for the preparation of melamine-formaldehyde free microcapsules. Microcapsules obtainable by said process are also an object of the invention. Perfuming compositions and consumer products comprising said capsules, in particular perfumed consumer products in the form of home care or personal care products, are also part of the invention 1. A process for the preparation of a melamine-formaldehyde free microcapsule comprising the steps of:1) admixing a perfume or flavour oil with at least one polyisocyanate having at least three isocyanate functional groups to form an oil phase, provided that the oil phase is essentially free from diisocyanate;2) dissolving an ionic surfactant or ionic colloidal stabilizer in water to form a water phase;3) adding the oil phase to the water phase to form an oil-in-water dispersion, wherein the mean droplet size is comprised between 1 and 500 μm; 'the process being characterized in that the at least one polyisocyanate having at least three isocyanate functional groups is present in an amount comprised between 1 and 15 wt % of the oil phase, the water phase is essentially free from melamine-formaldehyde and no amine or polyamine is added at any stage of the process.', '5) performing a curing step to form a microcapsule slurry;'}2. A process according to claim 1 , further comprising the step of a adding a polymer selected from the group consisting of a non-ionic polysaccharide claim 1 , a cationic polymer and mixtures thereof to form an outer coating to the microcapsule.3. The process according to claim 1 , further comprising the step of drying the capsule slurry to obtain dried microcapsules.4. The process according to claim 1 , characterized in that the at least one polyisocyanate having at least three isocyanate functional groups is present in an amount comprised between 2 and 8 wt % of the oil phase.5. The process according to claim 1 , characterised in that the at least one polyisocyanate ...

Stabilizing Additives For Thermochromic Pigments

A microencapsulation process is improved by adding a stabilizing agent that contains one or more catalytic organo-metal oxide materials, such as metal soaps. This functions as a crosslinker by causing unsaturated bonds in the microcapsule walls to react, thereby stabilizing the microcapsules against the effects of additives to coatings that, otherwise, degrade the functionality of thermochromic or photochromic materials at the microcapsule core. 137-. (canceled)38. A slurry comprising:a photochromic or thermochromic material encapsulated within a microcapsule;a solvent-based vehicle; anda stabilizing agent comprising a metallocene catalyst or transition metal bonded to at least one organic moiety through an oxygen linkage;wherein said stabilizing agent is effective to stabilize said photochromic or thermochromic material encapsulated within said microcapsule against deleterious effects of said solvent-based vehicle.39. The slurry of claim 38 , wherein said transition metal comprises zirconium.40. The slurry of claim 39 , wherein said zirconium comprises zirconium 2-ethylhexanoate.41. The slurry of claim 38 , wherein said microcapsule is cured.42. The slurry of claim 38 , wherein said stabilizing agent protects a color activation temperature of said photochromic or thermochromic material encapsulated within said microcapsule in said solvent-based vehicle.43. The slurry of claim 38 , wherein a cured coating comprising said thermochromic material encapsulated within said microcapsule claim 38 , said solvent-based vehicle claim 38 , and said stabilizing agent does not show a temperature repression for full color development.44. The slurry of claim 38 , wherein said solvent-based vehicle comprises a polymer.45. The slurry of claim 44 , wherein said polymer is formulated for application as an external coating on metal.46. The slurry of claim 45 , wherein said metal comprises coiled aluminum stock.47. The slurry of claim 45 , wherein said metal is intended to form a ...

Multilayer Structures with Distinct Layers and Methods of Forming Same

Methods of synthesizing multilayer structures, including multilayer capsules, tubes and hair-covered substrates, are provided. A substrate is provided comprising a polymerization initiator. The initiator-loaded substrate is exposed to a solution comprising a monomer and crosslinker. The initiator diffuses outwardly from the substrate, thereby initiating polymerization of the monomer and forming a layered structure comprising a polymer portion disposed on an exterior surface of the substrate. The process may be repeated for a selected number of cycles, thereby forming a multilayer structure having a selected number of layers. The composition, thickness and properties of each layer are selectively controlled. Multilayer structures formed in accordance with the methodologies are also provided. 1. A method of synthesizing a multilayer structure , comprising the step of subjecting a substrate to a first polymer layer-forming cycle , wherein said first cycle comprises:loading said substrate with a first reactant; andexposing said loaded substrate to a second reactant, wherein said first reactant diffuses outwardly from said substrate and reacts with said second reactant, thereby initiating polymerization and forming a polymer layer disposed on said substrate.2. The method of claim 1 , further comprising the step of subjecting said substrate and said polymer layer formed from the preceding cycle to one or more additional polymer layer-forming cycle(s) claim 1 , wherein each of said additional cycle(s) comprises:reloading said substrate and said polymer layer from the preceding cycle with a first reactant; andexposing said reloaded substrate and said polymer layer from the preceding cycle to a second reactant, wherein said first reactant diffuses outwardly from said substrate and said polymer layer from the preceding cycle and reacts with said second reactant, thereby initiating polymerization and forming a polymer layer disposed on and discrete from said polymer layer ...

Method of encapsulating particulate material

A method of encapsulating particulate materials that enables the particulate materials to be used in end use applications where they currently are not useful. The method uses specific sol gel technology to encapsulate solid particles. In addition, the method can be used to multiple coat a coated particle.

POLYHIPE-BASED SUBSTANCE-RELEASING SYSTEMS

A polyHIPE-based substance-releasing system capable of releasably encapsulating a highly concentrated solution and/or a room temperature solid while minimizing or avoiding burst release from the closed-cell microstructure of an elastic polyHIPE. 1. A composition-of-matter comprising an elastomer and a substance encapsulated therein , wherein:said elastomer is having a microstructure templated by an external phase of a high internal phase emulsion (HIPE);said microstructure being a closed-cell microstructure and said substance being encapsulated in pores of said closed-cell microstructure;said substance comprises less than 80% water; andsaid substance is releasable through said elastomer when the composition-of-matter is exposed to an aqueous environment.2. The composition-of-matter of claim 1 , wherein said HIPE is a water-in-oil emulsion.3. The composition-of-matter of claim 1 , wherein said substance is selected from the group consisting of an aqueous solution having at least 20% by weight of dissolved solids claim 1 , a saturated aqueous solution claim 1 , an emulsion claim 1 , an aqueous suspension of solids claim 1 , an aqueous colloid of solids claim 1 , an ionic liquid claim 1 , a room temperature solid claim 1 , and any combination thereof.4. The composition-of-matter of any one of - claim 1 , wherein said pores constituting at least 60% by volume of the total volume of the composition-of-matter.5. The composition-of-matter of any one of - claim 1 , wherein said elastomer is having a modulus of less than 600 MPa.6. The composition-of-matter of claim 5 , wherein said elastomer comprises residues of at least one monomer characterized by forming a homopolymer having a Tlower than 20° C.7. The composition-of-matter of claim 5 , wherein said elastomer comprises residues of at least one monomer being selected from the group consisting of an acrylic acid-based monomer claim 5 , an acrylate claim 5 , a methacrylate claim 5 , a siloxane claim 5 , a diene claim 5 , ...

CONDUCTIVE CELLULOSE NANOCRYSTALS, METHOD OF PRODUCING SAME AND USES THEREOF

The present disclosure provides a core-shell nanocomposite material comprising an intrinsically conductive polymer (ICP) and surface-modified cellulose nanocrystals (CNCs) as well as synthesis for preparing same and its use thereof in various applications. 1. A composite having a core-shell arrangement , said composite comprising cellulose nanocrystal (CNC) as the core , a first layer comprising at least one surface agent in contact with said CNC and a second layer comprising at least one intrinsically conductive polymer (ICP) in contact with said surface agent; wherein said CNC has a rod-like shape with a mean diameter of 10-20 nm and length of 200-400 nm; and wherein said core is individually coated by said ICP.2. The composite of claim 1 , wherein said surface agent is an amphiphilic agent.3. The composite of claim 1 , wherein said surface agent is poly(4-vinylpyridine) (P4VP) claim 1 , poly(N claim 1 ,N-dimethyl acrylamide) (PDMA) claim 1 , Polyethylenimine (PEI) claim 1 , or poly(N-vinylpyrrolidone) (PVP).4. The composite of claim 1 , wherein said ICP is polypyrrole claim 1 , polyaniline claim 1 , polyindole claim 1 , polythiophene claim 1 , poly(3-methylthiophene) claim 1 , poly(N-methyl aniline) claim 1 , or poly(o-toluidine).5. The composite of claim 1 , wherein a mass ratio of the surface agent/CNC is from about 5/100 to about 100/100.6. A process for preparing a composite having a core-shell arrangement claim 1 , said composite comprising cellulose nanocrystal (CNC) as the core claim 1 , a first layer comprising at least one surface agent in contact with said CNC and a second layer comprising at least one intrinsically conductive polymer (ICP) in contact with said surface agent;said process comprising:dispersing the cellulose nanocrystal (CNC) in a solution, wherein said CNC has a rod-like shape with a mean diameter of 10-20 nm and length of 200-400 nm;mixing the CNC solution and at least one surface agent to cause adsorption of said surface agent on the ...

Fibrous Support Comprising Particles Containing a Partially Water-Soluble Active Agent, Particles, and Methods for Producing Said Particles

The invention relates to a support consisting of natural and/or synthetic fibres which particles are held, which are preferably water-soluble, comprising at least one active agent, said particles at least partially releasing the active agent(s) under the effect of an external stress, characterised in the active agent has a water-solubility of between 0.1 and 60 wt. %, preferably between 0.1 and 30 wt. %. 116.-. (canceled)17. A support consisting of natural and/or synthetic fibers on which particles comprising at least one active agent are retained , said particles releasing , at least in part , the active agent(s) under the effect of an external stress , wherein the active agent has a solubility in water of 0.1% to 60% by weight.18. The support of claim 17 , wherein the support is a flexible support.19. The support of claim 17 , wherein the particles have a size of 100 nm to 200 μm.20. The support of claim 17 , wherein the particles are microcapsules comprising a solid casing including a fluid or solid phase in which the active agent is present and/or microspheres comprising a solid matrix in which the active agent is present.21. The support of claim 17 , wherein the active agent is chosen from antifogging agents claim 17 , bactericidal agents claim 17 , biocidal agents claim 17 , detergents claim 17 , dermatological therapeutic agents claim 17 , cosmetic agents claim 17 , such as moisturizers claim 17 , emollients claim 17 , cleaning agents claim 17 , relipidizing agents claim 17 , lipolytic agents claim 17 , exfoliants claim 17 , tightening agents claim 17 , pigmenting and depigmenting agents claim 17 , antiseptic agents claim 17 , disinfectants and healing agents claim 17 , fragrances and odorizing agents.22. The support of claim 17 , wherein it is chosen from woven claim 17 , nonwoven and knitted textiles claim 17 , and papers.23. The support of claim 17 , wherein it is chosen from fabrics made of microfibers comprising hydrophilic polymer microfibers and ...

METHOD FOR THE ENCAPSULATION OF SUBSTANCES IN SILICA-BASED CAPSULES AND THE PRODUCTS OBTAINED THEREOF

The present invention relates to a method for enclosing either hydrophobic or hydrophilic substances in silica-based micro- and nanocapsules via emulsion techniques. More specifically, it relates to a method for the preparation of 0.01-100 μm, particularly 0.01-10 μm, silica-based microcapsules containing up to 99% (w/w) payload using a silica precursor polymer, polyalkoxysiloxane (PAOS), preferentially polyalkylalkoxysiloxane (R-PAOS), which acts not only as a silica source but also an emulsifier. In order to obtain mechanically stable capsules, the conversion of PAOS or R-PAOS is accompanied with the solidification of the organic phase. For the encapsulation of hydrophobic substances, oil-in-water emulsions are formed. The formation of water-in-oil-in-water double emulsions is required to encapsulate hydrophilic compounds. 1. A process for the preparation of silica-based micro- and nanocapsules loaded with up to 99% (w/w) hydrophobic organic compounds , comprising the step of:emulsifying a hydrophobic, water insoluble liquid comprising (i) polyalkoxysiloxane (PAOS) or amphiphilic PAOS that are partially substituted with hydrophilic groups and (ii) a hydrophobic organic liquid in an aqueous solution, without additional surfactants and without preformed (nano)particles, under shearing forces for a time period sufficient to form the silica-based capsules.2. The process according to claim 1 , wherein the hydrophobic organic liquids are selected from alkanes claim 1 , alkenes claim 1 , alkynes claim 1 , esters claim 1 , ethers claim 1 , ketones claim 1 , aldehydes claim 1 , aromatic compounds claim 1 , polymers claim 1 , etc.3. The process according to claim 1 , wherein PEOS can be substituted with poly(ethylene glycol) monoalkyl ester of different molecular weight and different degrees of substitution.4. A process for the preparation of silica-based micro- and nanocapsules loaded with up to 99% (w/w) hydrophobic claim 1 , water insoluble polymers claim 1 , comprising ...

SELF-HEALING POLYURETHANE NANO-MICRO CAPSULES FOR AUTOMOTIVE PAINTING

A self-healing paint and protective coating system includes multiple microcapsules embedded into a protective layer applied to a panel. Each of the multiple microcapsules includes a target substance and a polymeric material covering encapsulating the target substance. Upon activation of at least one of the multiple microcapsules occurring from a mechanical rupture of the polymeric material covering, the target substance is released. 1. A self-healing paint and protective coating system , including: a target substance; and', 'a polymeric material covering encapsulating the target substance;, 'multiple microcapsules embedded into a protective layer, each of the multiple microcapsules, includingwherein upon activation of at least one of the multiple microcapsules occurring from a mechanical rupture of the polymeric material covering, the target substance is released.2. The self-healing paint and protective coating system of claim 1 , wherein the covering defines a polyurethane material.3. The self-healing paint and protective coating system of claim 2 , wherein an average diameter of the microcapsules is approximately 15 μm.4. The self-healing paint and protective coating system of claim 2 , wherein the target substance defines an automotive ink.5. The self-healing paint and protective coating system of claim 1 , wherein the covering of the microcapsule has a varying thickness.6. The self-healing paint and protective coating system of claim 1 , wherein the microcapsules are formed using a microencapsulation chemical process.7. The self-healing paint and protective coating system of claim 6 , wherein the microencapsulation chemical process defines in situ polymerization using a polycondensation reaction.8. The self-healing paint and protective coating system of claim 7 , wherein the interfacial polymerization system provides for interfacial polymerization to occur at an interface between a first immiscible phase and a second immiscible phase.9. The self-healing paint ...

METHOD OF PRODUCING SILICONE MICROSPHERES

A method of making silicone microspheres comprises nebulizing a silicone precursor solution comprising one or more oligomeric dimethylsiloxanes, a catalyst and a solvent into an aerosol comprising a plurality of droplets. Each droplet comprises the silicone precursor solution. The droplets are entrained in a gas which is flowed through a reaction zone comprising light energy and/or heat energy. Upon exposure of the droplets to the light energy and/or the heat energy, the solvent evaporates and the one or more oligomeric dimethylsiloxanes are polymerized. Thus, silicone microspheres are formed from the droplets of the aerosol. 1. A method of making silicone microspheres , the method comprising:nebulizing a silicone precursor solution comprising one or more oligomeric dimethylsiloxanes, a catalyst and a solvent into an aerosol comprising a plurality of droplets, each droplet comprising the silicone precursor solution;entraining the droplets in a gas and flowing the gas through a reaction zone comprising light energy and/or heat energy,wherein, upon exposure of the droplets to the light energy and/or the heat energy, the solvent evaporates and the one or more oligomeric dimethylsiloxanes are polymerized, thereby forming silicone microspheres from the droplets of the aerosol.2. The method of claim 1 , wherein the one or more oligomeric dimethylsiloxanes are present in the silicone precursor solution at a concentration of no greater than about 150 mg/mL.3. The method of claim 2 , wherein the concentration is from about 0.1 mg/mL to about 100 mg/mL.4. The method of claim 1 , wherein nebulizing the silicone precursor solution comprises exposing the silicone precursor solution to ultrasonic energy.5. The method of claim 1 , wherein the gas comprises an inert gas.6. The method of claim 1 , wherein the gas is flowed through the reaction zone at a flow rate of from about 0.1 slpm to about 2 slpm.7. The method of claim 1 , wherein the reaction zone is heated to a temperature in ...

POLY(ACID) MICROCAPSULES AND RELATED METHODS

Microcapsules and techniques for the formation of microcapsules are generally described. In some embodiments, the microcapsules are formed in an emulsion (e.g., a multiple emulsion). In some embodiments, the microcapsule may be suspended in a carrying fluid containing the microcapsule that, in turn, contain the smaller droplets. In some embodiments, the microcapsules comprise a shell and a droplet at least partially contained within the shell (e.g., encapsulated within the shell), and may be suspended in a carrier fluid. In certain embodiments, the shell is a hydrogel comprising a poly(acid). In some cases, the poly(acid) is a polyanion. In some cases, the shell does not comprise a poly(base) or polycation (e.g., a polycationic poly electrolyte). In some embodiments, the microcapsules comprise a shell comprising a poly(acid) and a poly(anhydride). 1. A method , comprising:forming a microfluidic droplet comprising a first fluid contained within a carrying fluid, the first fluid comprising an anhydride;polymerizing some of the anhydride within the microfluidic droplet to form a poly(anhydride) to cause the droplet to form a microcapsule;cross-linking the poly(anhydride) within the microcapsule; andhydrolyzing some of the anhydride within the microcapsule to form carboxylic acid.2. The method of claim 1 , wherein the poly(anhydride) comprises methacrylic anhydride.3. The method of any one of or claim 1 , wherein the poly(anhydride) comprises pentenoic anhydride.4. The method of any one of - claim 1 , wherein polymerizing some of the anhydride comprises exposing the anhydride to UV light.5. The method of any one of - claim 1 , wherein polymerizing some of the anhydride comprises exposing the anhydride to a photoinitiator.6. The method of any one of - claim 1 , wherein the microfluidic droplet has an average cross-sectional diameter of greater than or equal to 15 micrometers.7. The method of any one of - claim 1 , wherein the microfluidic droplet has an average cross- ...

CAPSULES AND PARTICLES AND USES THEREOF

Provided are antifouling particles and uses thereof in methods of anti-biofouling. 161.-. (canceled)62. A process for forming particles of an antifouling material , the process comprising contacting an antifouling material , in a non-particulate form , the material having at least one surface binding moiety , at least one antifouling moiety , and optionally at least one amino acid moiety with an aqueous medium under conditions permitting transformation of said material into particles having porosity dependent on the acidity of the aqueous medium.63. The process according to claim 62 , further comprising a step of isolating the particles from the aqueous medium.64. The process according to claim 62 , wherein the medium having a pH between 7 and 10 claim 62 , or between 7 and 9.65. The process according to claim 62 , wherein the medium having a pH between 2 and 5 claim 62 , or between 2 and 4 claim 62 , or between 2 and 3.66. The process according to claim 62 , wherein the particle porosity is characterized by a plurality of pores having pore densities of between about 10 pores/mmand about 10 pores/100 μm.67. The process according to claim 66 , wherein the pore density is between about 10 pores/mmand about 10 pores/90 μm claim 66 , between about 10 pores/mmand about 10 pores/80 μm claim 66 , between about 10 pores/mmand about 10 pores/70 μm claim 66 , between about 10 pores/mmand about 10 pores/60 μm claim 66 , between about 10 pores/mmand about 10 pores/50 μm claim 66 , between about 10 pores/mmand about 10 pores/40 μm claim 66 , between about 10 pores/mmand about 10 pores/30 μm claim 66 , between about 10 pores/mmand about 10 pores/20 μm claim 66 , between about 10 pores/mmand about 10 pores/10 μm claim 66 , between about 10 pores/mmand about 10 pores/5 μm claim 66 , between about 10 pores/mmand about 10 pores/2 μmor between about 10 pores/mmand about 10 pores/1 μm.68. The process according to claim 66 , wherein the pore density is between about 20 pores/mmand about ...

SUPRAMOLECULAR CAPSULES

Provided is the use of a capsule holding a catalyst, such as an enzyme. The capsule has a shell of material that is a supramolecular cross-linked network. The network is formed from a host-guest complexation of a host, such as cucurbituril, and one or more building blocks comprising suitable guest functionality. The complex non-covalently crosslinks the building block and/or non-covalently links the building block to another building block thereby forming the network. The shell of the capsule encapsulates the catalyst. The capsules holding the catalyst are suitable for use as microreactors, and the catalyst can be used as such whilst it is held within the capsule. 1. A method of catalysis , the method comprising the step of catalysing the reaction of a reagent in the presence of an enzyme , wherein a capsule holds the enzyme and the capsule has a shell of material that is a supramolecular cross-linked network.2. The method of claim 1 , wherein the shell is obtainable from the complexation of a composition comprising a host and one or more building blocks having suitable host guest functionality thereby to form a supramolecular cross-linked network.3. The method of claim 1 , wherein the method includes the preliminary step of permitting a reagent to enter the capsule.4. The method of claim 1 , wherein the method includes the subsequent step of collecting the capsule claim 1 , optionally together with product that is contained within the capsule.5. The method of claim 1 , wherein the method includes the subsequent step of permitting a product to pass out of the capsule.6. The method of claim 5 , wherein the product is separated from the capsule.7. The method of claim 2 , wherein the host is selected from cucurbituril claim 2 , cyclodextrin claim 2 , calix[n]arene claim 2 , and crown ether claim 2 , and the one or more building blocks have suitable host guest functionality for the cucurbituril claim 2 , cyclodextrin claim 2 , calix[n]arene or crown ether host.8. The ...

Encapsulates

The invention discloses a microencapsulated phase change material having a specific Thermal Efficiency Index (TEI). 1. A microencapsulated phase change material comprising a particle comprising a core material and a wall material that surrounds the core material , the particle having a Thermal Efficiency Index greater than 0.2. The composition of claim 1 , said composition having a Thermal Efficiency Index of at least 600.3. The composition of claim 1 , said composition having a Thermal Efficiency Index of at least 10 claim 1 ,000.4. The composition of wherein said particle's wall material comprises a material selected from the group consisting of polyacrylate claim 1 , polymethacrylate claim 1 , polyamine claim 1 , polyurea claim 1 , polyurethane claim 1 , melamine formaldehyde claim 1 , and mixtures thereof.5. The composition of claim 1 , wherein said particle's core material comprises a material selected from the group consisting of 50 to 97 wt % of a methyl ester derived from palm oil claim 1 , and from 0.1 to 20 wt % of a straight chain alkane based on total weight of the core.6. The composition according to wherein the core includes in addition from 0.1 to 25 wt % of a wax.7. The composition of wherein the wax is selected from the group of waxes consisting of alkane wax claim 6 , polyethylene wax claim 6 , carnauba wax claim 6 , candelilla wax claim 6 , vegetable wax claim 6 , beeswax and paraffin wax.8. The composition of claim 5 , wherein said particle comprises at least 1 wt % of a core material.9. The composition of claim 5 , wherein said particle comprises from about 20 to about 95 wt % of a core material.10. The composition of claim 5 , wherein said particle comprises from about 50 to about 90 wt % of a core material.111212. A microencapsulated phase change material according claim 5 , having a differential scanning calorimetric melt point peak T of the microencapsulated phase change material of not more than 30° C. and a resolidification peak T of not ...

Encapsulates

The invention discloses a microencapsulated phase change material having a specific Thermal Efficiency Index (TEI). The composition of the invention comprises particles of a microencapsulated phase change material, the particles comprising a core and a shell that encapsulates the core, the shell comprising a polyurea obtained by polymerizing an isocyanate and an amine, prepared by (i) providing a water phase with an emulsifier, (ii) providing an internal phase of a core material and a multifunctional isocyanate soluble or dispersible in the internal phase, (iii) adding the internal phase to the water phase under high speed agitation to form an emulsion comprising droplets of the internal phase dispersed in the water phase and forming a first shell at an interface of the internal phase droplets and water phase mixture, and (iv) adding a multifunctional amine monomer to the emulsion thereby forming additional polyurea shell over the first shell at an interface of the internal phase droplets and water phase mixture. The resulting particles have a Thermal Efficiency Index greater than 0. Microcapsules according to the invention are highly effective at delivering enhanced thermal performance as compared to conventional microcapsules. 1. A composition comprising particles of a microencapsulated phase change material , the particles comprising a core and a shell that encapsulates the core , the shell comprising a polyurea obtained by polymerizing a multifunctional isocyanate monomer and an amine monomer , prepared by:i) providing a water phase with an emulsifier;ii) providing an internal phase of a core material and a multifunctional isocyanate monomer soluble or dispersible in the internal phase;iii) adding the internal phase to the water phase under high speed agitation to form an emulsion comprising droplets of the internal phase dispersed in the water phase;iv) adding a multifunctional amine monomer to the emulsion thereby forming an initial polyurea shell at an ...

Hollow particles and use thereof

Hollow particles having a shell including at least one layer, wherein the at least one layer contains a vinyl-based resin, and contains a phosphorus atom and/or a sulfur atom.

FUNCTIONAL MULTI-WALLED CORE-SHELL PARTICLES

The present invention relates to core-shell particles comprising a core comprising at least one lipophilic compound and a shell comprising at least one layer close to the core and one layer far from the core. The invention further relates to the preparation of such core-shell particles and their use, particularly in the finishing of fibers and textiles. 1. Core-shell particles comprising(a) a core comprising at least one lipophilic compound and(b) a shell comprising at least one layer close to the core and one layer far from the core, wherein the layer close to the core is obtainable by polymerization of at least one monomer with at least one ethylenically unsaturated group and wherein the monomer with at least one ethylenically unsaturated group does not have a nucleophilic group with active hydrogen atom, particularly no NCO-reactive hydrogen.2. The core-shell particles of claim 1 , wherein the layer far from the core is disposed on the layer close to the core.3. The core-shell particles of claim 1 , wherein the lipophilic compound is selected from pigments claim 1 , dyes claim 1 , fragrances claim 1 , cosmetics claim 1 , flame retardants claim 1 , latent heat storage materials claim 1 , biocides claim 1 , catalysts claim 1 , adhesives claim 1 , adhesive components claim 1 , hydrophobing agents claim 1 , polymer building blocks claim 1 , isocyanates claim 1 , oils claim 1 , silicone oils claim 1 , waxes or mixtures thereof.5. The core-shell particles of claim 1 , wherein the layer far from the core contains at least one urethane claim 1 , allophanate claim 1 , carbodiimide claim 1 , isocyanurate claim 1 , biuret claim 1 , uretdione claim 1 , urea claim 1 , iminooxadiazinedione or uretonimine group.6. The core-shell particles of claim 1 , wherein the layer far from the core is an addition product of at least one polyisocyanate and at least one compound comprising at least two groups with NCO-reactive hydrogen atom claim 1 , preferably hydroxy claim 1 , amino claim ...

MICROCAPSULES

Microcapsules including a shell and core structure are disclosed herein. In one aspect, the core includes at least one poly(allylamine). A process for producing such microcapsules is also disclosed herein. In another aspect, a curable epoxy resin composition includes a mixture of (a) at least one epoxy monomer compound and (b) a plurality of the disclosed microcapsules. Processes for producing the curable epoxy resin composition and a cured epoxy resin composite are also disclosed. 1. A microcapsule , comprising a shell and core structure , wherein the shell of the microcapsule comprises a polymer matrix comprising a reaction product of:(a) an emulsion or suspension of a highly polar liquid in a non-polar liquid, wherein the highly polar liquid exists in the form of discrete droplets dispersed in the non-polar liquid, and wherein the highly polar liquid includes a mixture of (i) a first small molecule amine compound comprising at least one amine having from 1 to 6 carbon atoms, and (ii) a second amine compound comprising at least one poly(allylamine) having greater than 6 carbon atoms; and(b) a shell-forming compound introduced into the emulsion or suspension and reacting with the second amine compound to form a polymeric shell about the droplets of highly polar liquid and to produce the microcapsules; andwherein the core of the microcapsule comprises the first small molecule amine compound and the highly polar liquid.2. The microcapsule of claim 1 , wherein the permeability of the shell is sufficient to prevent or minimize passage of the first small molecule amine compound and the highly polar liquid from the core through the shell and to provide an extended shelf-life to the microcapsule.3. The microcapsule of claim 1 , wherein the first small molecule amine compound is tetraethylene pentamine.4. The microcapsule of claim 1 , wherein the concentration of the first small molecule amine compound in the core is from about 1 weight percent to about 50 weight percent.6 ...

METHOD FOR LOW TEMPERATURE MICROENCAPSULATION OF PHASE CHANGE MATERIALS

The method for low temperature microencapsulation of phase change materials or other components includes the following steps: (a) preparing a phase change emulsion including droplets of at least one active phase-change material in water with a surfactant; (b) adding a monomer of at least one encapsulating agent; (c) introducing the phase change emulsion into a UV reactor while stirring the emulsion; and (d) initiating the photo polymerization of monomers using at least one UV lamp inside the UV reactor for photo polymerization until the phase change material is encapsulated within a polymeric shell to form microcapsules. The microcapsules obtained by this process may have a diameter between about 0.5 to about 2 μm. Other sizes can also be obtained by changing stirring speed of the emulsion. 1. A method for microencapsulation of phase change materials , comprising the steps of:(a) adding a phase change material (PCM) and a surfactant to water to form an emulsion including droplets of PCM suspended in the water;(b) adding a monomer of at least one encapsulating agent to the emulsion;(c) irradiating a thin film of the emulsion with ultraviolet (UV) radiation on a sloping support above a tank in a UV reactor to initiate polymerization of the at least one encapsulating agent; and(d) continuously recirculating the emulsion from the tank to the sloping support in a thin film while irradiating the thin film emulsion with UV radiation for a period of time sufficient to microencapsulate micron-sized particles of the PCM in a polymer shell.2. The method for microencapsulation of phase change materials according to claim 1 , further comprising the step of washing the microcapsules to remove any unreacted monomer and any phase change material.3. The method for microencapsulation of phase change materials according to claim 2 , further comprising the step of drying the microcapsules in an oven at about 50° C. for about 48 hours.4. The method for microencapsulation of phase change ...

CHEMILUMINESCENT MATERIALS AND METHOD OF MAKING SAME

Chemiluminescent materials are provided that include an encapsulated oxalate-containing composition that includes a core portion and a polymeric coating, a peroxide source, and a fluorescent dye. The core portion includes an oxalate; a polymerizable component composition that polymerizes upon exposure to ultraviolet radiation; a photosensitizer; and an ultraviolet screening agent. The polymeric coating layer surrounding the core portion comprises a polymer derived from the polymerizable component composition. A fluorescent dye may be intermixed in the oxalate-containing composition, intermixed with the peroxide source, present in the chemiluminescent material as a separate dye layer or particle, or present within another component of the chemiluminescent material. A method for making the chemiluminescent material is also provided. 1. A chemiluminescent material comprising [ an oxalate;', 'a polymerizable component composition comprising one or more monomers and/or oligomers that polymerize upon exposure to ultraviolet radiation, wherein the one or more monomers and/or oligomers is selected from the group consisting of acrylate monomers, acrylate oligomers, methacrylate monomers, methacrylate oligomers, and combinations thereof;', 'a photosensitizer; and', 'an ultraviolet (UV) screening agent;, 'a core portion comprising the oxalate-containing composition comprising, 'a polymeric coating layer surrounding the core portion, wherein the polymeric coating layer comprises a polymer derived from the polymerizable component composition;', 'a peroxide source; and', 'a fluorescent dye., 'an encapsulated oxalate-containing composition, comprising3. The chemiluminescent material of claim 2 , wherein the substituted aryl groups is selected from the group consisting of chlorophenyl claim 2 , dichlorophenyl claim 2 , trichlorophenyl claim 2 , nitrophenyl claim 2 , dinitrophenyl claim 2 , benzoylxyphenyl claim 2 , formylphenyl claim 2 , carboxyphenyl claim 2 , methoxyphenyl claim ...

CONTROLLED RELEASE PARTICLES, PRODUCTION METHOD THEREOF, MOLDING MATERIAL, AND MOLDED ARTICLE

A production method of controlled release particles includes an oil phase component preparation step in which an oil phase component containing a hydrophobic slurry is prepared by dispersing, in a hydrophobic polymerizable vinyl monomer, an antibiotic compound that is hydrophobic and is substantially insoluble to the hydrophobic polymerizable vinyl monomer without the presence of a solvent; a water dispersion step in which a hydrophobic slurry is dispersed in water to prepare an aqueous dispersion; and a polymerization step in which the polymerizable vinyl monomer is subjected to suspension polymerization to produce a polymer. 1. The controlled release particles produced by a production method including:an oil phase component preparation step in which an oil phase component containing a hydrophobic slurry is prepared by dispersing, in the hydrophobic polymerizable vinyl monomer, an antibiotic compound that is hydrophobic and is substantially insoluble to the hydrophobic polymerizable vinyl monomer without the presence of a solvent,a water dispersion step in which the oil phase component is dispersed in water to prepare an aqueous dispersion, anda polymerization step in which the polymerizable vinyl monomer is subjected to suspension polymerization to produce a polymer.2. The controlled release particles according to claim 1 ,wherein in the polymerization step, the polymerizable vinyl monomer is subjected to suspension polymerization in the presence of a salt of a condensate of aromatic sulfonic acid and formaldehyde, and/orthe polymerizable vinyl monomer contains a (meth)acrylate monomer and a (meth)acrylate-based crosslinkable monomer.3. The controlled release particles according to claim 1 , wherein the antibiotic compound is a neonicotinoid-based insecticide.4. The controlled release particles according to claim 3 , wherein the neonicotinoid-based insecticide contains at least one selected from the group consisting of (E)-1-(2-chlorothiazole-5-ylmethyl)-3-methyl- ...

Microencapsulated Acidic Materials

Microcapsules encapsulating acidic materials particularly liquid or solid organic acids, either neat or dispersed in an oil phase, are described. The microcapsules comprise condensation products of alkylated methylol melamine resins in the presence of an acrylic acid-alkyl acrylate co-polymer. An aqueous emulsion is formed with a dispersed organic acid. pH control under acidic conditions along with additions of sulfate salt promotes controlled encapsulation over an extended time period with successive heating to effect condensation and cure. 1. A method of forming core-shell microcapsules encapsulating an acidic material , the microcapsules obtained by condensation of a fully alkylated melamine resin precondensate in the presence of a protective colloid , the method comprising:(a) preparing an aqueous dispersion in water of an acrylic acid-alkyl acrylate copolymer, a fully alkylated melamine resin precondensate, and adjusting the pH of the aqueous dispersion to be acidic;(b) adding an acidic core material to the aqueous dispersion while applying high shear agitation to form an emulsion with droplet or particle size of less than 50 microns;(c) adding a sulfate salt to the emulsion;(d) heating to effect polycondensation of the alkylated melamine resin precondensate, thereby enwrapping particles or droplets of the acidic core material with polymeric shells of the polycondensed alkylated melamine resin, and,(e) further heating to cure the microcapsules.2. The method according to wherein the acidic core material is added to the aqueous dispersion as a solid particulate.3. The method according to wherein the acidic core material is added to the aqueous dispersion as an acid dissolved or dispersed in an oil phase.4. The method according to wherein ammonia is added after microcapsule curing and pH adjusted to be alkaline.5. The method according to wherein a formaldehyde scavenger is added after microcapsule curing.6. The method according to wherein the alkylated melamine ...

POLYMER PARTICLES

The present invention relates to a method of preparing an aqueous dispersion of polymer encapsulated particulate material, the method comprising: providing a dispersion of the particulate material in a continuous aqueous phase, the dispersion comprising ethylenically unsaturated monomer and a stabiliser for the particulate material; and polymerising the ethylenically unsaturated monomer by non-living free radical polymerisation to form polymer that encapsulates the particulate material, thereby providing the aqueous dispersion of polymer encapsulated particulate material; wherein polymerisation of the ethylenically unsaturated monomer comprises: (a) polymerising a monomer composition that includes ionisable ethylenically unsaturated monomer so as to form a base responsive water swellable non-living polymer layer that encapsulates the particulate material; and (b) polymerising a monomer composition that includes non-ionisable ethylenically unsaturated monomer so as to form an extensible, water and base permeable non-living polymer layer that encapsulates the base responsive water swellable polymer layer. 1. A method of preparing an aqueous dispersion of polymer encapsulated particulate material , the method comprising:providing a dispersion of the particulate material in a continuous aqueous phase, the dispersion comprising ethylenically unsaturated monomer and a stabiliser for the particulate material; andpolymerising the ethylenically unsaturated monomer by non-living free radical polymerisation to form polymer that encapsulates the particulate material, thereby providing the aqueous dispersion of polymer encapsulated particulate material; wherein polymerisation of the ethylenically unsaturated monomer comprises:(a) polymerising a monomer composition that includes ionisable ethylenically unsaturated monomer so as to form a base responsive water swellable non-living polymer layer that encapsulates the particulate material; and(b) polymerising a monomer composition ...

Process for encapsulating an inorganic pigment by polymerization in an organic medium

The present invention relates to the field of inks for electrophoretic display devices, and more particularly to a process for encapsulating at least one inorganic pigment by dispersion polymerization in an organic medium. The process consists in dispersing the inorganic pigment in the organic medium, then in synthesizing at least one stable polymer latex in said organic medium, said latex precipitating around said inorganic pigment in order to form a protective shell and to thus obtain a particle, said synthesis of the latex being carried out by polymerization, in said organic medium, of an electrostatically chargeable functional monomer, based on use of a macroinitiator capable of stabilizing said particle obtained.

HEAT-EXPANDABLE MICROCAPSULES, PRODUCTION METHOD THEREFOR, AND FOAMED MOLDED ARTICLE

Heat-expandable microcapsules each having a core/shell structure which includes a core and a shell, wherein the core contains a volatile substance and the shell contains a polymer, the polymer being obtained by reacting a monomer mixture with an organic peroxide represented by general formula (1): 3. The heat-expandable microcapsule according to claim 1 , whereinthe monomer mixture contains a nitrile based monomer andan amount of the nitrile based monomer in the monomer mixture is 25% by mass or more and 100% by mass or less.4. The heat-expandable microcapsule according to claim 3 , wherein the monomer mixture further contains one type or more of the monomers selected from a group consisting of monomers having a carboxyl group claim 3 , (meth)acrylamide based monomers claim 3 , alkyl(meth)acrylate claim 3 , ester compounds of (meth)acrylic acid and aliphatic alcohol claim 3 , aryl(meth)acrylate claim 3 , styrene based monomers claim 3 , vinylester based monomers claim 3 , and halogenated vinyl based monomers.5. A production method for the heat-expandable microcapsule according to claim 1 , comprising at least a step of dispersing an oily mixed liquid containing the monomer mixture claim 1 , the organic peroxide represented by Formula (1) claim 1 , and the volatile substance into an aqueous dispersion medium to obtain a dispersion; and a step of reacting the monomer mixture with the organic peroxide represented by Formula (1) in the obtained dispersion to polymerize the monomer mixture.6. A foamed molded article produced by using the heat-expandable microcapsule according to .7. The heat-expandable microcapsule according to claim 2 , whereinthe monomer mixture contains a nitrile based monomer andan amount of the nitrile based monomer in the monomer mixture is 25% by mass or more and 100% by mass or less.8. The heat-expandable microcapsule according to claim 7 , wherein the monomer mixture further contains one type or more of the monomers selected from a group ...

COMPOSITIONS, METHODS, AND SYSTEMS FOR BEAD FORMATION USING IMPROVED POLYMERS

The present disclosure provides systems and methods for making a hydrogel comprising a cell, cell nucleus, or one or more components derived from a cell or cell nucleus. A method for making a hydrogel may comprise providing a cell or cell nucleus, a first polymer, wherein the first polymer comprises a plurality of first crosslink precursors, each of the plurality of first crosslink precursors comprising an azide group; providing a second polymer, wherein the second polymer comprises a plurality of second crosslink precursors, each of the plurality of second crosslink precursors comprising an alkyne group; and crosslinking the first polymer and the second polymer via a reaction between a first section of the first crosslink precursors and a second section of the second crosslink precursors, thereby providing the hydrogel comprising the cell or cell nucleus. 1. A composition comprising:(a) a biological particle and/or a macromolecular constituent; and(b) two or more crosslinked polymers, wherein the crosslinks are formed by click chemistry.2. The composition of claim 1 , wherein the crosslinked polymers are a gel.3. The composition of claim 1 , wherein the crosslinked polymers enclose the biological particle and/or macromolecular constituent.4. The composition of claim 1 , wherein the crosslinks comprise a picolyl moiety.5. The composition of claim 1 , wherein the click chemistry is copper-catalyzed.6. The composition of claim 5 , wherein the copper-catalyzed click chemistry comprises a copper concentration selected from about 0.3 mM or less claim 5 , about 0.2 mM or less claim 5 , and about 0.15 mM or less.7. The composition of claim 1 , wherein the click chemistry is copper-free.8. The compositions of claim 7 , wherein the copper-free click chemistry is selected from: (a) strain-promoted azide/dibenzocyclooctyne-amine (DBCO) click chemistry; (b) inverse electron demand Diels-Alder (IED-DA) tetrazine/trans-cyclooctene (TCO) click chemistry; (c) inverse electron ...

HEAT-EXPANDABLE MICROSPHERES AND APPLICATION THEREOF

Heat-expandable microspheres containing a thermoplastic resin shell and a thermally-vaporizable blowing agent encapsulated therein. The thermoplastic resin is a polymer of a polymerizable component containing acrylonitrile, methacrylonitrile and acrylate ester and which satisfies specific conditions 1 and 2, where Condition 1: the amount of the acrylonitrile (A) Подробнее

LIQUID CRYSTAL CAPSULE AND METHOD FOR PRODUCING SAME

Shown is a method for producing a liquid crystal capsule having a particle diameter of 30 to 150 nanometers, and a method for producing a liquid crystal capsule without using a homogenizer. The disclosure concerns a method for producing a liquid crystal capsule, including a step of preparing an emulsion by performing phase inversion emulsification of a mixed material obtained by mixing a liquid crystal composition, a monomer, a surfactant, and a polymerization initiator; and a step of producing a liquid crystal capsule by applying a coacervation method to the emulsion. The disclosure also concerns a liquid crystal capsule having a liquid crystal composition, a surfactant and a capsule wall, wherein the capsule wall has a closed curved shape, the liquid crystal composition and a hydrophobic moiety of the surfactant are arranged inside the capsule wall, and a hydrophilic moiety of the surfactant is arranged outside the capsule wall. 1. A production method for a liquid crystal capsule , comprising:a step of preparing an emulsion by performing phase inversion emulsification of a mixed material obtained by mixing a liquid crystal composition, a monomer, a surfactant, and a polymerization initiator; anda step of producing a liquid crystal capsule by applying a coacervation method to the emulsion.2. The production method according to claim 1 , wherein the surfactant is a block copolymer.3. The production method according to claim 1 , [{'br': None, 'sub': 23', '12', '13, 'γ−(γ+γ)<0\u2003\u2003(a);'}, {'br': None, 'sub': 13', '12', '23, 'γ−(γ+γ)>0\u2003\u2003(b); and'}, {'br': None, 'sub': 12', '13', '23, 'γ−(γ+γ)<0\u2003\u2003(c),'}], 'wherein interfacial tension γ in the liquid crystal composition, a polymer obtained from the monomer, and water satisfies the following three expressions (a) to (c){'sub': 2', '13', '23, 'claim-text': [{'br': None, 'sub': 12', '1', '2', '1', '2', '1', '2, 'sup': d', 'd', '1/2', 'h', 'h', '1/2, 'γ=γ+γ−2(γγ)−2(γγ));'}, {'br': None, 'sub': 13', ...

NANO-PARTICULATE CAPSULES AND EMULSIONS THEREOF INCLUDING FRAGRANCE BY EMULSION POLYMERIZATION

A nano-particulate composition comprising nano-particulate capsule comprising at least one or more of hydrophobic core material and a polymeric shell comprising homo-polymer or copolymers of at least one ethylenically unsaturated monomers or mixture thereof and having particle size distribution with an average article size in the range of 50 to 1000 nm is provided together with a controlled release delivery system comprising fragrance release delivery system involving said nano-particulate capsule water based emulsion and a process of manufacture thereof. Said delivery system provided is able to protect and release the fragrance in a controlled manner over a period of time. The controlled release fragrance delivery system of the present invention finds advantageous end use and application in fragranced consumer products formulations including water based coating/paint formulations and industrial formulations for use in industries including textile, cosmetics, soaps and detergents, leather industries. 1. Nano-particulate capsule comprising at least one or more of hydrophobic core material and a polymeric shell comprising homo-polymer or copolymers of at least one ethylenically unsaturated monomers or mixture thereof and having particle size distribution with an average particle size in the range of 50 to 1000 nm.2. Nano-particulate capsule according to wherein said hydrophobic core material and said shell material are selected to facilitate said nano-capsule formation involving hydrophobic core material in solution with polymeric shell forming material without being reactive to each other.3. Nano-particulate capsule according to comprising controlled fragrance releasing nano-particulate capsule wherein said hydrobhobic core material comprises hydrophobic fragrance material and said shell material facilitating controlled release of said fragrance material.4. Nano-particulate capsule according to wherein said shell material is selected depending upon the desired cross- ...

Microparticle Compositions Comprising Saflufenacil

The present invention relates to microparticle compositions comprising saflufenacil, to a method of their preparation and to the use of these microparticle compositions for controlling undesired vegetation. In the microparticle compositions saflufenacil is present in the form of microparticles, which comprise solid saflufenacil, which is surrounded or embedded by an aminoplast polymer. 117-. (canceled)18. A microparticle composition comprising saflufenacil , wherein saflufenacil is present in the form of microparticles , which comprise solid saflufenacil , which is surrounded or embedded by an aminoplast polymer , which is a polycondensation product of one or more amino compounds and one or more aldehydes.19. The composition of claim 18 , wherein the aminoplast polymer is selected from the group consisting of melamine formaldehyde resins and urea formaldehyde resins.20. The composition of claim 18 , wherein the amount of aminoplast polymer in the microparticle composition is from 0.5 to 40% by weight claim 18 , based on the total weight of aminoplast polymer and saflufenacil.21. The composition of claim 18 , wherein the microparticles have a weight average particle diameter din the range from 1 to 25 μm claim 18 , as determined by dynamic light scattering of an aqueous dispersion of the microcapsules.22. The composition of claim 18 , wherein the microparticles comprise less than 10% by weight of particles having a particle diameter of more than 50 μm claim 18 , as determined by dynamic light scattering of an aqueous dispersion of the microcapsules.23. The composition of claim 18 , comprising at least one anionic polymeric surfactant having a plurality of sulfate or sulfonate groups.24. The composition of claim 23 , wherein the polymeric surfactant is a homo- or copolymer of a (meth)acrylate monomer or a (meth)acrylamide monomer having a sulfonic acid group.25. The composition of claim 23 , further comprising at least one anionic emulsifier in addition to the ...

LIQUID CRYSTAL DISPLAY DEVICE INCLUDING LIQUID CRYSTAL CAPSULE AND METHOD OF FABRICATING THE SAME

A liquid crystal capsule includes: a shell; and a liquid crystal molecule in the shell, wherein a critical surface tension of the shell is smaller than a critical surface tension of the liquid crystal molecule. Further, the liquid crystal molecule includes a nematic liquid crystal and the shell includes polytetramethyldisiloxane. The liquid crystal capsule also includes an additive in the shell and the additive has a critical surface tension smaller than that of the liquid crystal molecule. 1. A liquid crystal capsule , comprising:a shell; anda liquid crystal molecule dispersed in the shell,wherein the shell has a critical surface tension smaller than that of the liquid crystal molecule,wherein the critical surface tension of the liquid crystal molecule and the shell is obtained from a graph of a cosine value of a contact angle of reference liquid crystal droplets with respect to a surface tension of the liquid crystal molecule and the shell, andwherein the liquid crystal molecule includes a nematic liquid crystal and the shell includes polytetramethyldisiloxane.2. The liquid crystal capsule of claim 1 , further comprising an additive in the shell.3. The liquid crystal capsule of claim 2 , wherein the additive has a critical surface tension smaller than that of the liquid crystal molecule.4. The liquid crystal capsule of claim 3 , wherein the additive includes one of 1 claim 3 ,5 claim 3 ,5-trimethyl-6-acetylmethyl-cyclohexene claim 3 , 5-butyldimethylsilyloxy-2 claim 3 ,6-dimethylnon-1-en-3-yne claim 3 , octamethyltrisiloxane and tris(trimethylsilyl)borate.5. The liquid crystal capsule of claim 3 , wherein the additive is formed as an additive layer disposed between the liquid crystal molecule and the shell.6. The liquid crystal capsule of claim 5 , wherein the additive includes an adjustor adjusting an anchoring energy and a reactor reacting to an ultraviolet ray.7. A method of fabricating a liquid crystal capsule claim 5 , comprising:forming a nano emulsion ...