METHODS FOR SURFACTANT REMOVAL FROM NANOPARTICLE SUSPENSIONS

The present disclosure relates to the cleansing of nanoparticles in aqueous cationic surfactant solutions, including polyalkylammonium salts such as cetyltrimethylammonium bromide, as demonstrated by surfactant exchange, followed by the addition of peptizing agents to stabilize the cleansed nanoparticle solutes. 1. A method of treating suspensions , comprising:adding a polymeric detergent to a suspension of metal particles to cleanse it of surfactants, resulting in a suspension depleted of such surfactants; andadding a peptizing agent to stabilize the cleansed particle solutes.2. The method of claim 1 , wherein the metal particles comprise metal nanoparticles with hydrodynamic sizes between 1 and 200 nm.3. The method of claim 2 , wherein the metal nanoparticles are stabilized by cationic surfactants.4. The method of claim 1 , wherein the polymeric detergent is anionic in nature.5. The method of claim 1 , wherein the peptizing agent is an anionic species.6. The method of claim 1 , wherein the peptizing agent is a zwitterionic species.7. The method of claim 1 , wherein the peptizing agent is a nonionic species.8. A method for converting CTAB-stabilized GNRs into citrate-stabilized GNRs claim 1 , comprising:filtering excess surfactant from a GNR-CTAB suspension to result in a concentrated GNR-CTAB suspension;subjecting GNR-CTAB suspension to at least one centrifugation and redispersion cycle with solutions containing a mild detergent to deplete CTAB below trace levels, resulting in a CTAB-free GNR suspension; andsubjecting CTAB-depleted GNR suspension to at least one centrifugation and redispersion cycle using sodium citrate solutions to produce suspensions of citrate-stabilized GNRs, devoid of detergent.9. The method of claim 8 , further comprising diluting the suspension of CTAB-stabilized GNRs to 25 mM CTAB.10. The method of claim 8 , further comprising filtering the suspension of CTAB-stabilized GNRs by stirred ultrafiltration.11. The method of claim 8 , wherein ...

Non-newtonian materials for the prevention of mild traumatic brain injury

An improved design for an athletic helmet incorporating non-Newtonian fluid shock absorbing structures. 1. A force distribution system comprising:a helmet;a protective carapace;wherein the helmet is in physical communication with the protective carapace at at least one point, wherein physical communication is achieved via affixing a force bearing member to at least one location on the helmet and at least one location on the protective carapace; andwherein the force bearing member comprises a non-Newtonian dilatant fluid.2. The force distribution system of claim 1 , wherein the protective carapace at least partially covers the shoulders of a user.3. The force distribution system of claim 1 , wherein the helmet is a sports helmet.4. The force distribution system of claim 1 , wherein the protective carapace comprises a shoulder pad protective system.5. The force distribution system of claim 1 , wherein at least two force distribution members connect the helmet to the protective carapace.6. The force distribution system of claim 1 , wherein the force distribution members are permanently affixed to the helmet and protective carapace.7. The force distribution system of claim 1 , wherein the force bearing member does not comprise a foam.8. The force distribution system of claim 1 , wherein the non-Newtonian dilatant fluid is liquid at room temperature.9. The force distribution system of claim 1 , wherein the non-Newtonian dilatant fluid comprises a suspension.10. The force distribution system of claim 1 , wherein the non-Newtonian dilatant fluid comprises silica and polyethylene glycol.11. The force distribution system of claim 1 , wherein the non-Newtonian dilatant fluid comprises cross-linked polydimethylsiloxane12. A method of force distribution comprising:forming at least one force bearing member wherein the at least one force bearing member contains at least one non-Newtonian dilatant fluid;attaching a first end of the at least one force bearing member to a headpiece; ...

SELF-STABILIZED THERMOTHICKENING COLLOIDS

A thermothickening fluid is provided which comprises a liquid phase; a first polymer comprising functional groups and having a room temperature solubility in the liquid phase; and a second, different polymer comprising functional groups and having a room temperature solubility in the liquid phase, wherein functional groups on the first polymer are capable of associating with functional groups on the second polymer to form complexes, and the room temperature solubility of the first polymer is greater than the room temperature solubility of the second polymer. The fluid is a colloid at room temperature, a solution at an elevated temperature, and exhibits a thermothickening/thinning transition viscosity value at a thermo-thickening/thinning transition temperature between room temperature and the elevated temperature. 1. A thermothickening fluid comprising:a liquid phase;a first polymer comprising functional groups and having a room temperature solubility in the liquid phase; anda second, different polymer comprising functional groups and having a room temperature solubility in the liquid phase, wherein functional groups on the first polymer are capable of associating with functional groups on the second polymer to form complexes, and the room temperature solubility of the first polymer is greater than the room temperature solubility of the second polymer,wherein the fluid is a colloid at room temperature, a solution at an elevated temperature, and exhibits a thermothickening/thinning transition viscosity value at a thermo-thickening/thinning transition temperature between room temperature and the elevated temperature.2. The fluid of claim 1 , wherein the association between corresponding functional groups on the first and second polymers to form the complexes is hydrogen bonding.3. The fluid of claim 1 , wherein the functional groups of one of the first and second polymers are carboxylic acid groups.4. The fluid of claim 1 , wherein the functional groups of one of the ...

PHASE-CHANGE SUSPENSION FLUID COMPOSITION INCLUDING POLYETHYLENE OXIDE PARTICLES AND METHOD FOR MANUFACTURING THE SAME

A suspension fluid prepared by dispersing polyethylene oxide particles into a solvent including water and one or more types of compounds selected from the group consisting of ethylene glycol and propylene glycol, and a method for manufacturing the same. The phase-change suspension fluid can be a shear-thinning fluid showing a constant newtonian behavior in a low shear rate or low frequency region, but showing a non-newtonian behavior appearing as liquid-like suspension in a high shear rate or high frequency region due to viscosity decrease, and is capable of reversible phase changes by the vibration of a vehicle, and therefore, may provide effects of having advantages of a hydraulic bush in a low frequency region and also having advantages of a solid bush in a high frequency region. 1. A phase-change suspension fluid composition including polyethylene oxide particles , the fluid comprising:polyethylene oxide particles; anda solvent including water and one or more compounds selected from the group consisting of ethylene glycol and propylene glycol.2. The phase-change suspension fluid composition of claim 1 , wherein the polyethylene oxide particles have a weight average molecular weight (Mw) of 100 claim 1 ,000 to 900 claim 1 ,000.3. The phase-change suspension fluid composition of claim 1 , wherein the polyethylene oxide particles are included in 5 to 30% by weight with respect to the total weight of the phase-change suspension fluid composition.4. A method for manufacturing a phase-change suspension fluid claim 1 , the method comprising:(i) preparing a suspension fluid by mixing and dispersing polyethylene oxide particles into a solvent including water and one or more compounds selected from the group consisting of ethylene glycol and propylene glycol;(ii) ultrasonicating the suspension fluid; and(iii) removing air by placing the ultrasonicated suspension fluid in a vacuum chamber.5. The method for manufacturing a phase-change suspension fluid of claim 4 , wherein ...

METHOD AND APPARATUS FOR MANUFACTURING AEROGEL SHEET

A method for manufacturing an aerogel sheet according to the present invention includes: a step (a) of preparing a blanket having a plate shape; a step (b) of mixing silica sol with gelling catalyst to prepare a silica sol precursor; and a step (c) of injecting the silica sol precursor prepared in the step (b) to a surface of the blanket prepared in the step (a) through an injection device to gelate the silica sol precursor, wherein, in the step (c), the injection device injects the silica sol precursor while moving from one side to the other side of the surface of the blanket. 1. A method for manufacturing an aerogel sheet , the method comprising:a step (a) of preparing a blanket having a plate shape;a step (b) of mixing silica sol with gelling catalyst to prepare a silica sol precursor; anda step (c) of injecting the silica sol precursor prepared in the step (b) to a surface of the blanket prepared in the step (a) through an injection device to gelate the silica sol precursor,wherein, in the step (c), the injection device injects the silica sol precursor while moving from one side to the other side of the surface of the blanket.2. The method of claim 1 , wherein the step (a) comprises a loading step loading the blanket having the plate shape in a storage vessel claim 1 , a transfer step adsorbing the plate-shaped blanket loaded in the storage vessel to transfer the blanket claim 1 , and a preparation step of inserting the blanket transferred by the transfer part into a fixing vessel claim 1 , andthe silica sol precursor is injected to a surface of the blanket inserted into the fixing vessel through the injection device.3. The method of claim 1 , wherein claim 1 , in the step (b) claim 1 , tetraethyl orthosilicate (TEOS) and ethanol are mixed to prepare the silica sol.4. The method of claim 3 , wherein the tetraethyl orthosilicate (TEOS) comprises hydrolyzed TEOS.5. The method of claim 1 , wherein claim 1 , in the step (b) claim 1 , ethanol and ammonia water (NHOH) ...

METHOD FOR PRODUCING SILICA AEROGEL AND SILICA AEROGEL PRODUCED THEREBY

Provided is a silica aerogel with enhanced physical properties. The silica aerogel can have a tap density of 0.030 to 0.070 g/mL, and a carbon content of 11.2 to 12.1 wt %. 1. A silica aerogel having a tap density of 0.030 to 0.070 g/mL.2. The silica aerogel of claim 1 , wherein the silica aerogel has a tap density of 0.032 to 0.070 g/mL.3. The silica aerogel of claim 1 , wherein the silica aerogel has a carbon content of 11.2 to 12.1 wt %. This application is a continuation of allowed co-pending U.S. patent application Ser. No. 15/768,995, which is the National Stage Application of International Application No. PCT/KR2017/009769 filed on Sep. 6, 2017, which claims the benefit of Korean Patent Application No. 10-2016-0117520, filed on Sep. 12, 2016, in the Korean Intellectual Property Office, the disclosures of each of which are incorporated herein in their entirety by reference for all purposes as if fully set forth herein.The present invention relates to a method for producing a silica aerogel, and a silica aerogel produced thereby.An aerogel is a superporous, high specific surface area (500 m/g) material having a porosity of about 90 to 99.9% and a pore size in the range of 1 to 100 nm, and is a material excellent in ultra-light weight, super thermal insulation, ultra-low dielectric, and the like. Accordingly, research on the development of aerogel materials as well as research on the practical use thereof as transparent insulation materials, environmentally friendly high temperature insulation materials, ultra-low dielectric thin films for highly integrated devices, catalysts and catalyst carriers, electrodes for supercapacitors, and electrode materials for seawater desalination have been actively studied.The biggest advantage of the aerogel is that the aerogel has a super-insulation exhibiting a thermal conductivity of 0.300 W/m·K or less, which is lower than that of an organic insulation material such as conventional Styrofoam, and that fire vulnerability and ...

Handleable Calco-Magnesian Suspension

An aqueous calco-magnesian suspension comprising solid particles fitting the general formula a Ca(OH)2.b Mg(OH)2.c MgO in an aqueous phase at a concentration greater than or equal to 200 g/kg, wherein a, b and c represent mass fractions, the sum of which has a value from 90 to 100% and an additive which is simultaneously a viscosity reducer and a viscosity increase moderator, wherein said additive is a phosphonate or a phosphonic acid. 1. An aqueous calco-magnesian suspension comprising solid particles fitting the general formula a Ca(OH).b Mg(OH).c MgO in an aqueous phase at a concentration greater than or equal to 200 g/kg , wherein a , b and c represent mass fractions , the SUM of which has a value from 90 to 100% and an additive which is simultaneously a viscosity reducer and a viscosity increase moderator , characterized in that said additive is a phosphonate or a phosphonic acid , selected from the group consisting of aminoalkylene polyphosphonic acids , wherein the alkylene radical contains from 1 to 20 carbon atoms , of hydroxyalkylidene polyphosphonic acids , wherein the alkylidene radical contains from 2 to 50 carbon atoms , phosphono-alkanepolycarboxylic acids , wherein the alkane group contains from 3 to 12 carbon atoms and wherein the molar ratio of the alkylphosphonic acid radical to the carboxylic acid radical is in the range from 1:2 to 1:4 , derivatives thereof and mixtures thereof.2. The aqueous calco-magnesian suspension according to claim 1 , wherein said phosphonate or phosphonic acid comprises claim 1 , in acid form claim 1 , from 2 to 8 phosphonic acid characteristic groups.3. The aqueous calco-magnesian suspension according to claim 1 , wherein said phosphonate or phosphonic acid is selected from the group consisting of aminotris(methylenephosphonic) acid (ATMP) claim 1 , of 1-hydroxyethylidene-1 claim 1 ,1-diphosphonic acid (HEDP) claim 1 , of ethylenediamine tetrakis(methylenephosphonic) acid (EDTMP) of hexamethylenediamine tetrakis( ...

METHOD FOR PRODUCING HYDROGENATED AMORPHOUS SILICON-CONTAINING COLLOIDS AND/OR COMPOSITE COLLOIDS AND FOR ENCAPSULATING SUBSTANCES WITH HYDROGENATED AMORPHOUS SILICON-CONTAINING COMPOSITE COLLOIDS, HYDROGENATED AMORPHOUS SILICON-CONTAINING COLLOIDS AND/OR COMPOSITE COLLOIDS, SUBSTANCES ENCAPSULATED WITH SILICON-CONTAINING COMPOSITE LAYERS, AND USE THEREOF

Hydrogenated amorphous silicon-containing colloids or composite colloids have a silicon-containing shell which surrounds the hollow colloids or composite colloids. The colloids have a spherical geometry. The silicon-containing composite colloids have a spherical geometry and a diameter of between 2 nm and 7 nm in scanning electron micrographs, and the silicon-containing colloids have a spherical geometry with a cavity and a diameter of between 50 and 200 nm in scanning transmission electron micrographs. The cavity is surrounded by a shell with a thickness of between 3 and 10 nm. 118-. (canceled)19. Hydrogenated amorphous silicon-containing colloids or composite colloids , comprising: a silicon-containing shell which surrounds hollow colloids or composite colloids , the colloids having a spherical geometry , the silicon-containing composite colloids having a spherical geometry and a diameter of between 2 nm and 7 nm in scanning electron micrographs , and the silicon-containing colloids having a spherical geometry with a cavity and a diameter of between 50 and 200 nm in scanning transmission electron micrographs , wherein the cavity is surrounded by a shell with a thickness of between 3 and 10 nm.20. A method for producing the hydrogenated amorphous silicon-containing colloids or composite colloids according to and for encapsulating substances with said hydrogenated amorphous silicon-containing composite colloids claim 19 , as well as hydrogenated amorphous silicon-containing composite colloids and substances encapsulated with hydrogenated amorphous silicon-containing composite colloids claim 19 , the method comprising:for producing the composite colloids, subjecting to cavitation by a sonotrode a trisilane cyclooctane solution with an additive, wherein the trisilane concentration is 25 vol. % and the additive concentration is 13 vol. %, sonication by the sonotrode being carried out at a process temperature of 8° C., for a duration of 320 min and at an amplitude of ...

METHOD FOR PRODUCING SILICA AEROGEL AND SILICA AEROGEL PRODUCED THEREBY

The present invention relates to a method for producing a silica aerogel and a silica aerogel produced thereby. More specifically, a first water glass solution is used to form a first silica wet gel, and then a second water glass solution is additionally added to form a second silica wet gel organically bonded to the first silica wet gel which serves as a basic skeleton, so that a silica aerogel with enhanced physical properties is formed to increase the resistance to shrinkage in ambient drying. Thus, a low-density silica aerogel may be formed, and the concentrations of the first and second water glass solutions may be adjusted to control the physical properties of the silica aerogel. 1. A method for producing a silica aerogel , comprising:1) adding a first water glass solution and an acid catalyst to a reactor to form a first silica wet gel;2) adding a second water glass solution and an acid catalyst to the first silica wet gel;3) adding a surface modifier solution to the first silica wet gel to form a second silica wet gel; and4) drying a silica wet gel including the first silica wet gel and the second silica wet gel.2. The method of claim 1 , wherein the acid catalyst is at least one selected from the group consisting of hydrochloric acid claim 1 , nitric acid claim 1 , acetic acid claim 1 , sulfuric acid and hydrofluoric acid.3. The method of claim 1 , further comprising claim 1 , after step 1) claim 1 , aging and pulverizing the first wet gel.4. The method of claim 1 , wherein the concentration ratio between silicon dioxides in the first and second water glass solutions is 1:1 to 1100:1.5. The method of claim 1 , wherein the surface modifier solution is a solution in which a surface modifier is added to a nonpolar organic solvent.6. The method of claim 1 , wherein the surface modifier is at least one selected from the group consisting of trimethylchlorosilane (TMCS) claim 1 , hexamethyldisilazane (HMDS) claim 1 , methyltrimethoxysilane claim 1 , ...

一种Al2O3-B2O3-SiO2复合溶胶、核壳结构活性炭纤维及其制备方法

本发明涉及一种Al 2 O 3 ‑B 2 O 3 ‑SiO 2 复合溶胶、核壳结构活性炭纤维及其制备方法，属于活性炭纤维技术领域，解决了现有技术中活性炭纤维本身固有强度低的技术问题。本发明提供的核壳结构活性炭纤维的制备方法包括：步骤1、利用马来酸酐对再生纤维素纤维进行表面改性，得到改性再生纤维素纤维；步骤2、利用Al 2 O 3 ‑B 2 O 3 ‑SiO 2 复合溶胶对改性再生纤维素纤维进行表面修饰处理，将得到的修饰层进一步凝胶固化；步骤3、将修饰后的再生纤维素纤维进行碳化与活化处理，制得具有Al 2 O 3 ‑B 2 O 3 ‑SiO 2 复合氧化物修饰层的核壳结构活性炭纤维。本发明提供的核壳结构活性炭纤维能够大幅提高产物的强度、柔韧性和可织造性能。

Particles dispersed w/polymer dispersant having liquid soluble and cross-linkable insoluble segments

Dispersions containing a liquid vehicle (which can be aqueous, semi-aqueous or non-aqueous), organic or inorganic particles (or mixtures) that are insoluble in the liquid vehicle and a polymeric dispersant, preferably a structured polymeric dispersant, having one or more segments soluble in the liquid vehicle and one or more segments insoluble in the liquid vehicle, have improved stability when the insoluble segment(s) contains cross-linking groups which are cross-linked to itself or a cross-linking compound such as a polyfunctional monomer, oligomer or polymer to form an encapsulation network that entraps the particles which are particularly useful for paints or inks in coating and printing applications.

Process for preparing high internal phase ratio emulsions and latexes derived thereof

The present invention is a method of preparing a high internal phase ratio emulsion without phase inversion comprising the steps of: a) continuously merging into a disperser and in the presence of an emulsifying and a stabilizing amount of a surfactant, a continuous phase liquid stream having a flow rate R 1 , and a disperse phase liquid stream having a flow rate R 2 ; and b) mixing the merged streams with a sufficient amount of shear, and with R 2 :R 1 sufficiently constant, to form the high internal phase ratio emulsion without phase inversion or stepwise distribution of an internal phase into an external phase; wherein R 2 :R 1 encompasses a range, the lower limit of which range being defined by a point where the volume average particle size of the high internal phase ratio emulsion begins to show an inverse dependence on R 2 :R 1 , and wherein the upper limit of which range is just less than an R 2 :R 1 where a phase inversion of the high internal phase ratio emulsion takes place. Monodisperse submicron particles can be prepared using the process of the present invention. Useful latexes can be prepared from these high internal phase ratio emulsions.

Process for preparing high internal phase ratio emulsions and latexes derived thereof

The present invention is a method of preparing a high internal phase ratio emulsion without phase inversion comprising the steps of: a) continuously merging into a disperser and in the presence of an emulsifying and a stabilizing amount of a surfactant, a continuous phase liquid stream having a flow rate R 1 , and a disperse phase liquid stream having a flow rate R 2 ; and b) mixing the merged streams with a sufficient amount of shear, and with R 2 :R 1 sufficiently constant, to form the high internal phase ratio emulsion without phase inversion or stepwise distribution of an internal phase into an external phase; wherein R 2 :R 1 encompasses a range, the lower limit of which range being defined by a point where the volume average particle size of the high internal phase ratio emulsion begins to show an inverse dependence on R 2 :R 1 , and wherein the upper limit of which range is just less than an R 2 :R 1 where a phase inversion of the high internal phase ratio emulsion takes place. Monodisperse submicron particles can be prepared using the process of the present invention. Useful latexes can be prepared from these high internal phase ratio emulsions.

Colloidal compositions and derivatives thereof

Method of preparing emulsions having high content of internal phase, and latexes based thereon

FIELD: chemical industry. SUBSTANCE: method comprises stages of (a) continuously adding liquid stream of continuous phase having flow rate R 1 to dispersant in the presence of emulsifying and stabilizing amount of surfactant of liquid stream of continuous phase and liquid stream of dispersed phase having flow rate R 2 and (b) mixing combined streams at mixing rate sufficiently constant to form emulsion having high content of internal phase R 2 :R 1 corresponds to the beginning of inversion depending on R 2 :R 1 ratio, and upper boundary is established slightly lower than R 2 :R 1 ratio at which phase inversion of emulsion occurs. Method makes it possible to prepare monodispersed latexes with particle size of about 1 micron and which are for applying coatings where it is necessary to have controllable particle size, minimize oiling and increase stability of latex. EFFECT: more efficient preparation method. 21 cl, 4 dwg, 1 ex УС Эс ПЧ с» (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 163 244 (51) МПК” (13) С2 (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98100057/04, 03.05.1996 (24) Дата начала действия патента: 03.05.1996 (30) Приоритет: 05.06.1995 Ц$ 08/463 151 (43) Дата публикации заявки: 27.10.1999 (46) Дата публикации: 20.02.2001 (56) Ссылки: ЦЗ 5147134, А, 15.09.1992. И$ 5250516 А, 05.10.1993. СВ 2194166 А, 02.03.1988. ЕР 156486 АЗ, 02.10.1985. ЕР 283241 А2, 21.09.1988. К.Е. Дж. БАРРЕТ. Дисперсионная полимеризация в органических средах. - Л.: Химия, 1979, с.265-295. (85) Дата перевода заявки РСТ на национальную фазу: 05.01.1998 (86) Заявка РСТ: 0$ 96/06293 (03.05.1996) (87) Публикация РСТ: М/О 96/39461 (12.12.1996) (98) Адрес для переписки: 129010, Москва, ул. Большая Спасская 25, стр.3, ООО "Городисский и Партнеры", Лебедевой Н.Г. (71) Заявитель: ДЗЕ ДАУ КЕМИКАЛ КОМПАНИ (0$) (72) Изобретатель: Джеймс Е. ПЭЙТ Ш! (ЦЗ), Нанетт Е. ЛУТЕНСКЕ (0$), Джеймс ПЕТЕРС (0$), Рональд Р. ПЕЛЛЕТЬЕР (1$) (73) Патентообладатель: ДЗЕ ...

폴리 에틸렌 옥사이드 입자를 포함하는 상변이 현탁 유체 조성물 및 이의 제조방법

본 발명은 폴리 에틸렌 옥사이드(poly ethylene oxide) 입자를, 에틸렌 글리콜(ethylene glycol) 및 프로필렌 글리콜(propylene glycol)로 이루어진 군으로부터 선택된 1종 이상의 화합물과 물을 포함하는 용매에 분산시켜 제조한 현탁 유체 및 이의 제조방법에 관한 것이다. 본 발명에 따른 상변이 현탁 유체는 저속의 전단속도나 저주파수 영역에서는 일정한 뉴토니안(newtonian) 거동을 보이지만, 고속의 전단속도나 고주파수 영역에서는 점도가 감소하여 액체와 같은 형태의 현탁액을 나타내는 비-뉴토니안(non-newtonian) 거동을 나타내는 전단담화(shear-thinning) 유체로서, 차량의 진동에 따라 상변이가 가역적으로 가능하여, 저주파 영역에서는 하이드로 부시의 장점이 고주파 영역에는 솔리드 부시의 장점이 양립된 효과를 제공할 수 있다.

Dispersions Having Improved Stability

액상 담체(수성, 반수성 또는 비수성일 수 있음), 액상 담체에 불용성인 유기 또는 무기 입자(또는 이들의 혼합물) 및 중합체 분산제, 바람직하게는 액상 담체중에 가용성인 세그먼트 1 이상 및 액상 담체에 불용성인 세그먼트 1 이상을 갖는 구조화 중합체 분산제를 함유하는 분산액은 상기 불용성 세그먼트(들)이 그 자체 또는 다관능성 단량체, 올리고머 또는 중합체와 같은 가교결합 화합물에 가교결합되는 가교결합기를 함유하여 입자를 가두는 캡슐화된 망상조직을 형성할 때 개선된 안정성을 가지며 코팅 및 인쇄 응용에 페인트 또는 잉크에 대해 특히 유용하다. Liquid carriers (which may be aqueous, semi-aqueous or non-aqueous), organic or inorganic particles (or mixtures thereof) insoluble in liquid carriers and polymer dispersants, preferably at least one segment soluble in liquid carriers and segments insoluble in liquid carriers Dispersions containing structured polymer dispersants having at least one contain encapsulated reticulum that traps particles by containing crosslinking groups that cross-link the insoluble segment (s) to itself or to crosslinking compounds such as polyfunctional monomers, oligomers or polymers. It has an improved stability when forming tissue and is particularly useful for paints or inks in coating and printing applications.

Method of producing sols and suspensions

FIELD: chemistry. SUBSTANCE: invention relates to chemical industry and pharmaceutics and can be used in making means of accelerated delivering solid substance, paint and lubricant materials, as well as in cleaning air from suspended particles. First, an aerosol of solid particles and an aerosol of particles formed by the fluid. As a result of contact of obtained aerosols in cell 1, an aerosol of particles of sol or suspension is obtained, in which solid particles are suspended in particles of fluid medium. Aerosol particles of the sol or suspension are then deposited to obtain macroscopic amounts of sol or suspension under the action of inertia by means of cyclone filter 4. Deposition can also be carried out under the action of gravitational or electric field, acoustic action or freezing. Aerosol of particles of sol or suspension can be recycled into cell 1 and used as an aerosol of particles formed by fluid medium. Obtained sol or suspension can be used as a fluid medium. Fluid may additionally be fed into cell 1 from reservoir 6. Fluid contains water, ethanol or a mixture thereof. Solid particles are carbon nanotubes, silver or iron nanoparticles encapsulated in a carbon shell. Fluid medium or particulate aerosol can additionally contain a surfactant, for example TRITON X-100, TWEEN 20, sodium deoxycholate, sodium dodecyl sulphate (SDS), ribonucleic or deoxyribonucleic acid or mixtures thereof. Obtained suspension can be additionally separated by flow gel chromatography. EFFECT: reduced time of preparation of stable sols or suspensions with minimum degree of defectiveness, as well as fragmentation and agglomeration of solid particles. 16 cl, 5 dwg, 9 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 721 318 C1 (51) МПК B01J 13/00 (2006.01) B82Y 40/00 (2011.01) B01D 45/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B01J 13/0086 (2019.08); B01J 2208/00752 (2019.08); B82Y 40/00 (2019.08); B01D 45/00 (2019.08 ...

Melt emulsification

The present invention generally relates to colloidal systems, which may include colloidal particles and/or other types of particles. One aspect of the invention is generally directed to a system comprising fluidic droplets that can be at least partially solidified, e.g., to form colloidal particles. In some embodiments, particles comprising an at least partially solid outer phase encapsulating an inner phase are formed. The inner phase may be any phase, e.g., a solid, a liquid, or a gas. In some cases, solidifying at least a portion of the outer phase of the droplets to form particles may increase the stability of the particles and/or the colloidal system containing the particles. In one set of embodiments, melting or liquefying the outer phase of the particles (for example, by heating the particle to a temperature above a threshold temperature) can allow release of an agent contained within the inner phase, and/or allow the inner phase to coalesce with a phase external to the particles. The melting temperature of the outer phase can be controlled in some embodiments such that the outer phase will melt above a predetermined temperature. In some embodiments, the particles may be formed to be essentially free of an auxiliary stabilizing agent. In some embodiments, an agent may be encapsulated within a particle with relatively high efficiency. Other aspects of the invention are generally directed to methods of making and using such colloidal systems, e.g., containing such particles, kits involving such colloidal systems, or the like.

Chemomechanical production of functional colloids

본 발명은 개질제의 존재하에서 입자를 분산제 중에서 기계적 방식으로 단편화하여 개질제가 단편화된 콜로이드 입자에 적어도 부분적으로 화학 결합되도록 하는, 관능성 콜로이드의 제조 방법에 관한 것이다. The present invention relates to a process for preparing functional colloids in which the particles are mechanically fragmented in the dispersant in the presence of the modifier such that the modifier is at least partially chemically bonded to the fragmented colloidal particles. 관능성 콜로이드, 화학기계적 제조, 반응성 분쇄, 개질제, 분산제 Functional Colloids, Chemical Mechanical Manufacturing, Reactive Grinding, Modifiers, Dispersants

MCM-41 molecular sieve with metal doped in framework and preparation method thereof

本发明提供的骨架掺入金属的MCM‑41分子筛的制备方法，基本构思为：以正硅酸乙酯为硅源、以金属盐为掺杂金属源(硝酸锶为锶源或硫酸锰为锰源)，乙二胺四乙酸二钠为配合剂、阳离子表面活性剂为模板剂、乙二胺为碱源，通过水热法原位一步合成骨架掺入金属的M‑MCM‑41介孔分子筛，金属M为Sr或Mn。所得分子筛具有有序的二维六方介孔结构，孔径为3.68～4.54nm，其中Sr或Mn的掺杂量为Sr或Mn与分子筛中Si的摩尔比为(0.012～0.053):1。可作为挥发性有机气体吸附剂的应用，具有较大的饱和吸附量，同时具有良好的热稳定性特别是对直径小于分子筛直径的甲苯、甲醛等气体具有良好的吸附效果。

Method of producing alkali metal emulsions

Preparation method and apparatus of aerogel sheet

본 발명에 따른 에어로겔 시트의 제조방법은 (a) 판 형태의 블랑켓을 준비하는 단계; (b) 실리카졸과 겔화용 촉매를 혼합하여 실리카졸 전구체를 제조하는 단계; 및 (c) 상기 (a) 단계에서 준비한 블랑켓의 표면에 상기 (b) 단계에서 제조한 실리카졸 전구체를 분사장치를 통해 분사하여 겔화시키는 단계를 포함하며, 상기 (c) 단계에서 분사장치는 상기 블랑켓의 표면 일측에서 타측으로 이동하면서 실리카졸 전구체를 분사할 수 있다.

A kind of MCM-41 molecular sieves of skeleton incorporation metal and preparation method thereof

本发明提供的骨架掺入金属的MCM‑41分子筛的制备方法，基本构思为：以正硅酸乙酯为硅源、以金属盐为掺杂金属源(硝酸锶为锶源或硫酸锰为锰源)，乙二胺四乙酸二钠为配合剂、阳离子表面活性剂为模板剂、乙二胺为碱源，通过水热法原位一步合成骨架掺入金属的M‑MCM‑41介孔分子筛，金属M为Sr或Mn。所得分子筛具有有序的二维六方介孔结构，孔径为3.68～4.54nm，其中Sr或Mn的掺杂量为Sr或Mn与分子筛中Si的摩尔比为(0.012～0.053):1。可作为挥发性有机气体吸附剂的应用，具有较大的饱和吸附量，同时具有良好的热稳定性特别是对直径小于分子筛直径的甲苯、甲醛等气体具有良好的吸附效果。

Phase-change suspension fluid composition including polyethylene oxide particles and method for manufacturing the same

本发明涉及包含聚氧化乙烯颗粒的相变悬浮流体组合物及其制备方法。具体地，本发明涉及一种通过将聚氧化乙烯颗粒分散到包含水以及选自由乙二醇和丙二醇组成的组的一种或多种化合物的溶剂中制备的相变悬浮流体组合物，及其制备方法。相变悬浮流体可以是剪切稀化流体，该剪切稀化流体表现出在低剪切速率或低频区域中恒定牛顿行为，但表现出由于粘度减小在高剪切速率或高频区域中呈现为类似液体的悬浮液的非牛顿行为，并能够通过车辆的振动可逆地相变，可以提供具有在低频区域具有液压衬套的优势并在高频区域具有固体衬套的优势的效果。

Method for producing colloidal nanoparticles with a compounder

The invention relates to an improved method for producing homogenous colloidal nanoparticles, preferably liposomes, using a compounder.

CONVENIENT LIQUID-MAGNESIUM SUSPENSION

1. Водная известково-магнезиальная суспензия, содержащая твердые частицы, соответствующие общей формуле aCa(OH)·bMg(OH)·cMgO, в которой a, b и c представляют собой массовые доли, сумма которых составляет от 90 до 100%, в водной среде с концентрацией, превышающей или равной 200 г/кг, и добавку, которая одновременно представляет собой средство, уменьшающее вязкость, и средство, замедляющее повышение вязкости, отличающаяся тем, что указанная добавка представляет собой фосфонат или фосфоновую кислоту, выбранные из фосфорорганических, азотированных или неазотированных кислот или их солей и более предпочтительно из группы, состоящей из аминоалкиленполифосфоновых кислот, в которых алкилен содержит от 1 до 20 атомов углерода, гидроксиалкилиденполифосфоновых кислот, в которых алкилиден содержит от 2 до 50 атомов углерода, фосфоноалканполикарбоновых кислот, в которых алкан содержит от 3 до 12 атомов углерода, а молярное отношение радикала алкилфосфоновой кислоты к радикалу карбоновой кислоты находится в интервале от 1:2 до 1:4, их производных, таких как их соли, и их смесей.2. Суспензия по п. 1, в которой фосфонат или фосфоновая кислота содержит в кислой форме от 2 до 8 и предпочтительно от 2 до 6 характеристических групп типа "фосфоновая кислота".3. Суспензия по п. 1 или 2, в которой фосфонат или фосфоновая кислота выбраны из группы, состоящей из амино-трис-метиленфосфоновой кислоты (ATMP), 1-гидроксиэтилиден-1,1-дифосфоновой кислоты (HEDP), этилендиамин-тетракис-метиленфосфоновой кислоты (EDTMP), гексаметилендиамин-тетракис-метиленфосфоновой кислоты (HDTMP), диэтилентриамин-пентакис-метиленфосфоновой кислоты (DTPMP), 2-гидроксиэтиламино-N,N-бис-метиленфосфоновой кислоты (HEMPA), 2-фосфоно-1,2,4-бутантрикарбоновой кислоты (PBTC), РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2015 117 616 A (51) МПК C01F 5/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015117616, 25.10.2013 (71) Заявитель(и): С.А. ЛУАСТ РЕШЕРШ Э ...

Phase change suspension fluid composition containing polyethylene oxide particles and preparation method thereof

本发明涉及包含聚氧化乙烯颗粒的相变悬浮流体组合物及其制备方法。具体地，本发明涉及一种通过将聚氧化乙烯颗粒分散到包含水以及选自由乙二醇和丙二醇组成的组的一种或多种化合物的溶剂中制备的相变悬浮流体组合物，及其制备方法。相变悬浮流体可以是剪切稀化流体，该剪切稀化流体表现出在低剪切速率或低频区域中恒定牛顿行为，但表现出由于粘度减小在高剪切速率或高频区域中呈现为类似液体的悬浮液的非牛顿行为，并能够通过车辆的振动可逆地相变，可以提供具有在低频区域具有液压衬套的优势并在高频区域具有固体衬套的优势的效果。

Method for manufacturing high-purity colloidal silica sol from tetraalkoxy silane under high-temperature condition, and dispersion in organic solvents thereof

본 발명은 4가 알콕시 실란으로부터 고온 반응 조건을 이용하여 고순도 실리카 졸을 제조하는 방법 및 이 방법에 의한 고순도 실리카 졸에 관한 것으로서, 보다 상세하게는 유기용매에 용해된 4가 알콕시 실란으로부터 가열 반응조건에서 반응시간 단축 및 콜로이드 안정성 확보가 가능한 실리카졸을 합성하고 연속적으로 표면처리하여 2차 응집반응을 차단하여 상온에서도 저장성이 우수한 고순도 실리카 졸을 제조하는 방법, 및 이 방법에 의해 제조된 유기용매 분산 고순도 실리카 졸에 관한 것이다. 본 발명은 1) 4가 알콕시 실란을 유기용매에 용해하고 저비점 염기성 촉매와 상기 4가 알콕시 실란의 2~4몰배에 해당되는 소량의 물을 첨가하여 40 ~100℃의 가열조건에서 콜로이달 실리카 졸을 합성하는 1단계; 2) 상기 실리카졸의 표면을 개질하기 위하여 표면개질물질을 투입하는 단계; 3) 촉매 부산물 및 저비점 용매를 제거하여 유기용매에 분산된 고순도 실리카졸을 완성하는 단계;를 포함하는 유기용매분산 고순도 실리카졸 및 그 제조방법을 기술적 요지로 한다. The present invention relates to a process for producing a high purity silica sol from a tetraalkoxysilane at a high reaction temperature, and more particularly to a process for preparing a high purity silica sol from a tetravalent alkoxysilane dissolved in an organic solvent Which is capable of shortening the reaction time and ensuring colloidal stability, and continuously treating the surface of the silica sol to block the secondary agglomeration reaction, thereby producing a high purity silica sol having excellent storability even at room temperature, and a method for producing an organic solvent dispersion High-purity silica sol. The present invention relates to a process for producing a solid catalyst component comprising the steps of: 1) dissolving tetraalkoxysilane in an organic solvent and adding a small amount of water equivalent to 2 to 4 molar equivalents of the low boiling basic catalyst and the tetraalkoxysilane to a solution of colloidal silica sol 1 < / RTI > 2) introducing a surface modifying material to modify the surface of the silica sol; 3) removing the catalyst by-products and low-boiling point solvent to complete a high-purity silica sol dispersed in an organic solvent, and a process for producing the same.

Method and apparatus for the production of dispersed dust

THIXOTROPIC COMPOSITION THAT CAN BE USED AS AN ANTI-SCRAP AGENT FOR SEALANTS

1) Composition thixotrope comprenant : - de 10 à 40 % en poids d'une bis-urée a) obtenue par réaction d'une amine aliphatique primaire al) avec un diisocyanate a2) de masse molaire inférieure à 500 g/mole, et - de 60 à 90 % en poids d'un ester b) de formule (I) : dans laquelle : - R1, R2 et R3 représentent un radical oxycarbonylalkyle de 4 à 20 atomes de carbone; - R4 représente un atome d'hydrogène, un radical méthyle ou éthyle ou encore un radical : -CH2-R5 dans lequel R5 représente un radical oxycarbonylalkyle de de 4 à 20 atomes de carbone ; ladite composition se présentant sous la forme d'une suspension de particules solides de la bis-urée a) dans une phase continue constituée par l'ester b). 2) Composition adhésive de mastic comprenant au moins un prépolymère réticulable à l'humidité et comme agent anti-coulure de 5 à 30 % en poids de ladite composition thixotrope. 1) Thixotropic composition comprising: - from 10 to 40% by weight of a bis-urea a) obtained by reaction of a primary aliphatic amine a1) with a diisocyanate a2) of molar mass less than 500 g / mol, and - from 60 to 90% by weight of an ester b) of formula (I): in which: - R1, R2 and R3 represent an oxycarbonylalkyl radical of 4 to 20 carbon atoms; - R4 represents a hydrogen atom, a methyl or ethyl radical or a radical: -CH2-R5 in which R5 represents an oxycarbonylalkyl radical of 4 to 20 carbon atoms; said composition being in the form of a suspension of solid particles of bis-urea a) in a continuous phase consisting of ester b). 2) Adhesive mastic composition comprising at least one moisture crosslinkable prepolymer and as an anti-sag agent from 5 to 30% by weight of said thixotropic composition.

THIXOTROPIC COMPOSITION FOR USE AS ANTI-SCRUB AGENT FOR SEALANTS

1) Composition thixotrope comprenant : - de 10 à 40 % en poids d'une bis-urée a) obtenue par réaction d'une amine aliphatique primaire al) avec un diisocyanate a2) de masse molaire inférieure à 500 g/mole, et - de 60 à 90 % en poids d'un ester b) de formule (I) : dans laquelle : - R1, R2 et R3 représentent un radical oxycarbonylalkyle de 4 à 20 atomes de carbone; - R4 représente un atome d'hydrogène, un radical méthyle ou éthyle ou encore un radical : -CH2-R5 dans lequel R5 représente un radical oxycarbonylalkyle de de 4 à 20 atomes de carbone ; ladite composition se présentant sous la forme d'une suspension de particules solides de la bis-urée a) dans une phase continue constituée par l'ester b). 2) Composition adhésive de mastic comprenant au moins un prépolymère réticulable à l'humidité et comme agent anti-coulure de 5 à 30 % en poids de ladite composition thixotrope. 1) Thixotropic composition comprising: - from 10 to 40% by weight of a bis-urea a) obtained by reaction of a primary aliphatic amine al) with a diisocyanate a2) with a molar mass of less than 500 g / mol, and from 60 to 90% by weight of an ester b) of formula (I): in which: R1, R2 and R3 represent an oxycarbonylalkyl radical of 4 to 20 carbon atoms; - R4 represents a hydrogen atom, a methyl or ethyl radical or a radical: -CH2-R5 in which R5 represents an oxycarbonylalkyl radical of 4 to 20 carbon atoms; said composition being in the form of a suspension of solid particles of the bis-urea a) in a continuous phase consisting of the ester b). 2) adhesive sealant composition comprising at least one moisture curable prepolymer and as an anti-sag agent from 5 to 30% by weight of said thixotropic composition.

Disinfecting, conserving, reducing and/or controlling microbial contamination of aqueous dispersions and/or suspensions of mineral materials comprises increasing the concentration of hydroxyl ions and dispersing/crushing the suspensions

The disinfection and/or conservation and/or reduction and/or control of the microbial contamination of aqueous dispersions and/or aqueous mineral matter suspensions, comprises: (a) increasing the concentration in hydroxyl ions in the dispersions and/or the suspensions, to at least 1x10 -2> mole/1, and (b) dispersing and/or crushing the aqueous dispersions and/or suspensions. Before, during or after stage (a), a dispersant and/or a crushing agent is added. The process further comprises optionally reducing the concentration of hydroxyl ions to less than or equal to 1x10 -2> mole/l, and optionally adding a substance with microbicide effect and/or implementing a physical process of decontamination. Independent claims are also included for: (1) an aqueous dispersions and/or suspensions of mineral materials; (2) a mineral formulations; (3) paper formulations; and (4) aqueous paints such as lacquers and varnishes.

Cerium (iii)-containing colloidal dispersion of cerium compound and its application

FIELD: inorganic chemistry, colloids. SUBSTANCE: invention relates to colloidal dispersion of cerium compound that comprises cerium (III). Concentration of cerium oxide in dispersion is at least 50 g/l, content of cerium (III) with respect to the total cerium content is at least 0.5% but not above 50%, specific conductivity is 5 mFm/cm, not above, pH value is from 4 to 8. Dispersion consists of particles with average diameter 15 nm, not above. Method for preparing dispersion involves reaction of at least one cerium (III) salt with a base in the presence of acid taken in the amount wherein the ratio H + /Ce exceeds 1. Precipitated obtained in this reaction is dispersed in water. Dispersion of this type can be used in catalysis, in manufacturing lubricants, ceramics, for preparing luminophores or polymeric films, cosmetics and as anti-corrosive agents. Invention provides preparing pure and concentrated colloidal dispersions by a simple method. EFFECT: improved and simplified preparing method, enhanced purity. 14 cl, 3 ex 6сзЗссс ПЧ сэ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК? ВИ” 2 228 295' 13) С2 С ОЛЕ 17/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 2002116371/15, 17.11.2000 (24) Дата начала действия патента: 17.11.200011.1-14 (30) Приоритет: 19.11.1999 ЕК 99/14576 (46) Дата публикации: 10.05.2004 (56) Ссылки: ЕР 700870 А, 13.03.1996. СВ 1603794 А, 25.05.1978. ЕК 2621576 А, 14.04.1989. ЦЗ 460684Г А, 19.08.1986. Химия и технология редких и рассеянных элементов Лод ред. К.А. БОЛЬШАКОВА, часть 1. - М.: Высшая школа, 1976, с.54-56. (85) Дата перевода заявки РСТ на национальную фазу: 19.06.2002 (86) Заявка РСТ: ЕК 00/03199 (17.11.2000) (87) Публикация РСТ: М/О 01/36331 (25.05.2001) (98) Адрес для переписки: 129010, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. Н.Г.Лебедевой (72) Изобретатель: ШАН-ШИНГ Жан-Ив (ЕК) (73) Патентообладатель: РОДИА ТЕРР РАР (ЕК) (74) ...

Method for controlling microbial contamination, mineral suspensions obtained and uses thereof

L' invention concerne un procédé de désinfection et/ou de conservation et/ou de réduction et/ou de contrôle de la contamination microbienne de dispersions aqueuses et/ou de suspensions aqueuses de matières minérales, et assurant une bonne stabilité en terme de viscosité BrookfieldTM auxdites dispersions et/ou suspensions aqueuses de matières minérales. Elle concerne aussi lesdites dispersions et/ou suspensions aqueuses ainsi obtenues ainsi que leurs utilisations dans les industries minéralieres, papetières et de la peinture. Elle concerne enfin les produits finaux obtenus.

Method for Controlling Microbial Contamination, Mineral Suspensions Obtained and Uses Thereof

The invention concerns a process for disinfection and/or conservation and/or reduction and/or control of microbial contamination of aqueous dispersions and/or aqueous suspensions of mineral matter, providing satisfactory stability in terms of Brookfield™ viscosity for the said aqueous dispersions and/or suspensions of mineral matter. It also concerns the said aqueous dispersions and/or suspensions thus obtained, together with their uses in the mineral, paper and paint industries. Finally it concerns the end products obtained.

Process for preparing thixotropic oils.

Handleable calco-magnesian suspension

A calco-magnesian aqueous suspension comprising solid particles of general formula a Ca(OH)

Process for the production of finely divided solid materials

Method of microbial contamination control, prepared mineral suspensions and application thereof

FIELD: medicine. SUBSTANCE: method of disinfection and/or preservation, and/or reduction, and/or the control of microbial contamination of aqueous dispersions and/or aqueous suspensions of natural and/or precipitated calcium carbonate consists in carrying out: a) at least one stage of OH- ion concentration increase in the specified aqueous dispersions and/or suspensions up to a value which exceeds or is equal to 1×10 -2 mole/l, and b) at least one stage of dispersion and/or grinding of the specified aqueous dispersions and/or suspensions. While carrying out the stage b), using a dispenser and/or a grinding substance is possible. The method can additionally contain a stage of OH- ion concentration decrease in the specified aqueous dispersions and/or suspensions up to a value which is lower or equal to 1×10 -2 mole/l following the stage a), and a stage which implies introducing at least one biocidal substance, and/or a physical disinfecting process is carried out. EFFECT: preparation of aqueous dispersions or aqueous suspensions characterised by high Brookfield viscosity stability. 28 cl, 35 tbl, 8 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 429 021 (13) C2 (51) МПК A61L B01F C09D D21H 2/16 (2006.01) 3/12 (2006.01) 1/00 (2006.01) 17/63 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2007132197/15, 20.01.2006 (24) Дата начала отсчета срока действия патента: 20.01.2006 (73) Патентообладатель(и): ОМИА ДЕВЕЛОПМЕНТ АГ (CH) R U Приоритет(ы): (30) Конвенционный приоритет: 26.01.2005 FR 05/00779 (72) Автор(ы): БУРИ Маттиас (CH), ШВАРЦЕНТРУБЕР Патрик (CH), ХУБШМИД Сильвия (CH) (43) Дата публикации заявки: 10.03.2009 Бюл. № 7 2 4 2 9 0 2 1 (45) Опубликовано: 20.09.2011 Бюл. № 26 (56) Список документов, цитированных в отчете о поиске: DE 19811742 A1, 23.09.1999. EP 0850283 A1, 01.07.1998. EP 0398487 A1, 22.11.1990. RU 2074869 C1, 10.03.1997. 2 4 2 9 0 2 1 R U (86) Заявка PCT: IB 2006/ ...

Melt emulsification

The present invention generally relates to colloidal systems, which may include colloidal particles and/or other types of particles. One aspect of the invention is generally directed to a system comprising fluidic droplets that can be at least partially solidified, e.g., to form colloidal particles. In some embodiments, particles comprising an at least partially solid outer phase encapsulating an inner phase are formed. The inner phase may be any phase, e.g., a solid, a liquid, or a gas. In some cases, solidifying at least a portion of the outer phase of the droplets to form particles may increase the stability of the particles and/or the colloidal system containing the particles. In one set of embodiments, melting or liquefying the outer phase of the particles (for example, by heating the particle to a temperature above a threshold temperature) can allow release of an agent contained within the inner phase, and/or allow the inner phase to coalesce with a phase external to the particles. The melting temperature of the outer phase can be controlled in some embodiments such that the outer phase will melt above a predetermined temperature. In some embodiments, the particles may be formed to be essentially free of an auxiliary stabilizing agent. In some embodiments, an agent may be encapsulated within a particle with relatively high efficiency. Other aspects of the invention are generally directed to methods of making and using such colloidal systems, e.g., containing such particles, kits involving such colloidal systems, or the like.

Improvements to processes and devices for pulverizing or decomposing solid materials

Viscoelastic compositions

The present invention provides aqueous viscoelastic compositions comprising a cleavable anionic surfactant which is a sulphonate and possibly also an electrolyte. The cleavable surfactants useful in the present invention comprise a chemical bond, which is capable of being broken under appropriate conditions, to produce oil soluble and water soluble products typically having no interfacial properties and surface activity compared with the original surfactant molecule. Further, the rheological properties of the aqueous viscoelastic composition are usually altered upon cleavage of the cleavable surfactant generally resulting in the elimination of the viscosifying, viscoelastic and surfactant properties of the composition. Aqueous viscoelastic compositions in accordance with the present invention are suitable for use in oil-field applications, particularly for hydraulic fracturing of subterranean formations. Thus, the present invention also relates to a wellbore service fluid and a method of fracturing a subterranean formation.

Nanoparticulate carrier for active ingredients, e.g. for pharmaceutical, cosmetic, agrochemical and food applications, comprises a colloidal dispersion with a hydrophobic dispersed phase in a thermotropic liquid crystal state

Nanoparticulate carrier for active ingredients comprises a colloidal dispersion with a hydrophobic dispersed phase that is present in a thermotropic liquid crystal state. An independent claim is also included for production of the carrier by generating the dispersion at high temperature (hot homogenization) or by another method.

Treatment of oils likely to give mixtures containing them thixotropic properties

Dispersions having improved stability

Production of nanoparticles

Soft glass, its manufacturing process and its applications

Additive for liquid or liquified hydrocarbon fueled direct fired burners, open flames and related processes

The present invention relates to the field of fuel additives, in particular, to an additive for hydrocarbon fueled burners and flames to enhance efficiency and/or reduce undesirable emissions, such as pollutants. The fuel additive of the invention includes a phosphorus-containing parent solution. The phosphorus salts are at least partially dispersed and/or dissolved in water or other appropriate solvent to create a phosphorus-containing parent solution that forms the basis for the fuel additive. The phosphorus-containing parent solution is added or mixed with a dispersion fluid.

Thixotropic composition that can be used as an anti-running agent for mastics

The invention relates to a thixotropic composition comprising: between 10 and 40 wt. % of a bis-urea a) obtained by reacting a primary aliphatic amine a1) with a diisocyanate a2) having a molar mass of les than 500 g/mol, and between 60 and 90 wt. % of an ester b) of formula (I) in which R 1 , R 2 and R 3 are an oxycarbonylalkyl radical with 4 to 20 carbon atoms; R 4 is a hydrogen atom, a methyl or ethyl radical or a CH 2 R 5 radical in which R 5 is an oxycarbonylalkyl radical with 4 to 20 carbon atoms; said composition being in the form of a suspension of solid particles of the bis-urea a) in a continuous phase formed by the ester b). The invention also relates to an adhesive mastic composition comprising at least one moisture-crosslinkable prepolymer and as an anti-running agent constituting 5 to 30 wt. % of said thixotropic composition.

Method for producing particulate material by freeze drying

Freeze drying of aqueous metal salt solutions of a type or concentration not ordinarily susceptible to freeze drying by sublimation of frozen droplets is accomplished by adding ammonium hydroxide, a substituted ammonium hydroxide or a salt of ethylene diamine tetraacetic acid. The additive raises the freezing point of the solution and also reduces the tendency of solutions to supercool. With these additives, solutions of salts such as ferric sulfate can be freeze dried in more concentrated forms, which ordinarily supercool, and a product thus obtained which upon calcining, produces a more dense oxide than can be produced by the calcining of the freeze dried product of more dilute solutions.

Method for manufacturing dispersion of ultrafine particles of poorly soluble substance

The present invention provides a method for manufacturing a dispersion in which a substance, which is poorly soluble in a dispersion medium, is dispersed with a particle size of a nano-order level. More particularly, the method includes: preparing a solution containing a good solvent and the poorly soluble substance and the surfactant dissolved in the good solvent; rapidly cooling the solution to a temperature at which the poorly soluble substance precipitates in the solution at a temperature lowering rate of 100 to 4,000° C./second to produce ultrafine particles with a particle size of a nano-order level formed of the poorly soluble substance in the good solvent; and (i) separating the good solvent from a mixed solution of the solution and the dispersion medium after mixing the solution and the dispersion medium, or (ii) mixing the dispersion medium to the solution after separating the good solvent from the solution.

Method for dispersion and grinding of ultrafine particles

Chemomechanical manufacture of functional colloids

The invention relates to a method for producing a functional colloid during which particles are reactively fragmented in a mechanical manner in a dispersant in the presence of a modifying agent so that the modifying agent is chemically bound, at least in part, to the fragmented colloid particles.

On-site silica sol manufacturing device using chemical pump, medium-pressure jet grout jetting device for spraying silica sol and cement milk manufactured by this device, and ground improvement method using the same

본 발명은 비균질한 지반에서도 확실하고, 완벽하게 지반이 개량되도록 시멘트밀크와 내구성 약액인 실리카졸을 주입재로 사용하며, 로드 단부에 장착되는 특수 선단 특수모니터를 이용하여 주입재를 중고압의 방사상으로 분사한 후, 지반을 절삭 및 파쇄시킴과 동시에 로드의 회전 인발로 대상지반을 균일하게 개량하여 개량체를 형성하여 반영구적인 차수벽 및 기초파일을 형성하고, 시공시 발생하는 슬라임을 산업폐기물로 처리하지 않고 되메우기, 성토재 또는 보조기층재 등으로 재활용할 수 있도록 한 케미컬 펌프를 이용한 실리카졸 현장 제조장치와 이 장치에 의해 제조된 실리카졸과 시멘트밀크를 분사하는 중고압 제트 그라우트 분사장치 및 이를 이용한 지반 개량공법을 제공하는데 그 목적이 있다. 상기한 목적을 달성하기 위한 본 발명에 따른 케미컬 펌프를 이용한 실리카졸 현장 제조장치는 황산이 저장된 황산탱크와; 규산에 일정량의 물을 가수하여 혼합 저장된 규산수탱크와; 상기 황산탱크와 규산탱크에 저장된 황산 및 규산수가 호스를 통해 각각 유입되는 케미컬 펌프와; 상기 케미컬 펌프를 통해 유입된 황산과 규산수가 호스에 의해 배출됨과 동시에 상기 황산과 규산수가 혼합되는 실리카졸 믹서로 구성됨을 특징으로 한다. 또한, 본 발명에 따른 중고압 제트 그라우트 분사장치는 최상단에 위치되며, 시멘트밀크 주입구와 실리카졸 주입구가 형성된 스위벨과; 상기 스위벨의 하부와 일체로 연결되며, 상기 시멘트밀크 주입구와 실리카졸 주입구가 각각 연통되도록 형성된 로드와; 상기 로드에 연결됨과 동시에 다수개의 시멘트밀크 분사노즐과 실리카졸 분사노즐이 형성되고, 최하단 내측면에 체크밸브가 설치된 특수모니터와; 상기 특수모니터의 하단부에 나사 결합되는 굴착비트로 구성됨을 특징으로 한다. 그리고, 본 발명에 따른 중고압 제트 그라우트 분사장치를 이용한 지반 개량공법은 회전충격식 천공기에 중고압 제트 그라우트 분사장치를 설치하는 단계; 상기 중고압 제트 그라우트 분사장치를 이용하여 지반을 일정한 깊이 및 직경으로 굴착하는 단계; 상기 중고압 제트 그라우트 분사장치에 시멘트밀크와 실리카졸을 주입함과 동시에 상향으로 선회 인발하면서 시멘트밀크 분사노즐과 실리카졸 분사노즐을 통해 시멘트밀크와 실리카졸을 분사하면서 지반을 교란시켜 지중에 주상형 개량체를 형성하는 단계로 이루어짐을 특징으로 한다. The present invention uses cement milk and silica sol, a durable chemical solution, as an injection material to improve the ground completely and reliably even in heterogeneous ground, and sprays the injection material radially at medium and high pressure using a special front end special monitor mounted on the end of the rod. After cutting and crushing the ground, at the same time, the target ground is uniformly improved by the rotational drawing of the rod to form an improved body to form a semi-permanent order wall and foundation pile, and the slime generated during construction is not treated as industrial waste. A silica sol on-site manufacturing device using a chemical pump that can be recycled as backfill, embankment material, or auxiliary base material, a medium-high pressure jet grout spraying device that sprays silica sol and ...

Method for producing cerium dioxide nanoparticles

Process of decohesion of solid bodies

Cerium dioxide nanoparticle-containing fuel additive

A fuel additive composition includes: a) a reverse-micellar composition having an aqueous disperse phase that includes cerium dioxide nanoparticles in a continuous phase that includes a hydrocarbon liquid, a surfactant, and optionally a co-surfactant and b) a reverse micellar composition having an aqueous disperse phase that includes a cetane improver effective for improving engine power during fuel combustion. A method of making a cerium-containing fuel additive includes the steps of: a) providing a mixture of a nonpolar solvent, a surfactant, and a co-surfactant; and b) combining the mixture with an aqueous suspension of stabilized cerium dioxide nanoparticles.

Additive for liquid or liquified hydrocarbon fueled direct fired burners, open flames and related processes

本发明涉及燃料添加剂领域，具体而言，涉及用于烃作为燃料的燃烧器及火焰的添加剂，从而提高效率和/或减少不期望的排放，例如污染物的排放。本发明的燃料添加剂包括含磷母液。磷盐至少部分地分散和/或溶解在水或其它适当的溶剂中以生成含磷母液，所述含磷母液形成燃料添加剂的基础。将含磷母液加入到分散流体中或与之混合。

control process of microbial contamination, mineral suspensions obtained and uses thereof

PROCESSO DE CONTROLE DA CONTAMINAçãO MICROBIANA, SUSPENSõES MINERAIS OBTIDAS E UTLLIZAçõES DAS MESMAS. A invenção refere-se a um processo de desinfecção e/ou de conservação e/ou de redução e/ou de controle da contaminação microbiana de dispersões aquosas e/ou de suspensões ac uosas de matérias minerais e garantindo uma boa estabilidade em termo de viscosidade BrookfieldTM às ditas dispersões e/ou suspensões aquosas de matérias minerais. Ela se refere também às ditas dispersões e/ou suspensões aquosas assim obtidas assim como às suas utilizações nas indústrias de minerais, de papel e de tintas. Ela se refere enfim aos produtos finais obtidos. MICROBIAN CONTAMINATION CONTROL PROCESS, MINERAL SUSPENSIONS OBTAINED AND USE OF THEM. The invention relates to a process for disinfecting and / or preserving and / or reducing and / or controlling microbial contamination of aqueous dispersions and / or aqueous suspensions of mineral materials and ensuring good viscosity stability. BrookfieldTM to said aqueous dispersions and / or suspensions of mineral materials. It also refers to said aqueous dispersions and / or suspensions thus obtained as well as their uses in the mineral, paper and paint industries. It finally refers to the end products obtained.

Dispersions having improved stability

Dispersion containing a liquid vehicle (which can be aqueous, semi-aqueous or non-aqueous), organic or inorganic particles (or mixtures) that are insoluble in the liquid vehicle and a polymeric dispersant, preferably a structured polymeric dispersant, having one or more segments soluble in the liquid vehicle and one or more segments insoluble in the liquid vehicle have improved stability when the insoluble segment(s) contains cross-linking groups which are cross-linked to a cross-linking compound such as itself or a polyfunctional monomer, oligomer or polymer to form an encapsulation network that entraps the particles and are particularly useful for paints or inks in coating and printing applications.

Thixotropic composition that can be used as an anti-running agent for mastics

The invention relates to a thixotropic composition comprising: between 10 and 40 wt. % of a bis-urea a) obtained by reacting a primary aliphatic amine a1) with a diisocyanate a2) having a molar mass of les than 500 g/mol, and between 60 and 90 wt. % of an ester b) of formula (I) in which R 1 , R 2 and R 3 are an oxycarbonylalkyl radical with 4 to 20 carbon atoms; R 4 is a hydrogen atom, a methyl or ethyl radical or a CH 2 R 5 radical in which R 5 is an oxycarbonylalkyl radical with 4 to 20 carbon atoms; said composition being in the form of a suspension of solid particles of the bis-urea a) in a continuous phase formed by the ester b). The invention also relates to an adhesive mastic composition comprising at least one moisture-crosslinkable prepolymer and as an anti-running agent constituting 5 to 30 wt. % of said thixotropic composition.

Chemomechanical production of functional colloids

A method for producing a functional colloid during which particles are reactively fragmented in a mechanical manner in a dispersant in the presence of a modifying agent so that the modifying agent is chemically bound, at least in part, to the fragmented colloid particles.

Cerium dioxide nanoparticle-containing fuel additive

A fuel additive composition includes: a) a reverse-micellar composition having an aqueous disperse phase that includes cerium dioxide nanoparticles in a continuous phase that includes a hydrocarbon liquid, a surfactant, and optionally a co-surfactant and b) a reverse micellar composition having an aqueous disperse phase that includes a cetane improver effective for improving engine power during fuel combustion. A method of making a cerium-containing fuel additive includes the steps of: a) providing a mixture of a nonpolar solvent, a surfactant, and a co-surfactant; and b) combining the mixture with an aqueous suspension of stabilized cerium dioxide nanoparticles.

Use of water-soluble polyethylene oxides as a viscosity-increasing binder additive for suspensions containing clay minerals

Alkali metal dispersions

A process for producing dispersions of atmospherically stable, coated alkali metal particles and atmospherically stable, coated alkali metal powders by agitating a mixture of molten alkali metal in a hydrocarbon oil at dispersion speeds, optionally in the presence of a dispersing agent, contacting the molten alkali metal-hydrocarbon oil dispersion, above or below the surface of the dispersion, with up to 3 weight percent anhydrous carbon dioxide while agitating the dispersion for at least 1 minute. The dispersion in oil can be used directly in chemical reactions. The bulk of the oil can be removed from the dispersions to produce oil wet particles, the oil wet particles can be washed with a low boiling hydrocarbon to produce hydrocarbon wet particles which can be dried to produce atmospherically stable powders of coated metal particle The dispersed particles in oil, the oil wet particles, the hydrocarbon wet particles and the atmospherically stable powders can each be used in chemical reactions. After washing and drying, the process produces lithium powders having a surface coating composition containing 0.1-0.3 atom percent lithium, 0.3-0.4 atom percent carbon, and 0.3-0.5 atom percent oxygen. The products of the invention may be used to synthesize organometallic compounds having low color and low soluble inorganic chloride levels.

Additive for liquid or liquified hydrocarbon fueled direct fired burners, open flames and related processes

Colloidal dispersion of cerium compound containing cerium III, process for its production and use thereof

Airgel sheet manufacturing method and manufacturing machine

Additive for liquid or liquified hydrocarbon fueled direct fired burners, open flames and related processes

The present invention relates to the field of fuel additives, in particular, to an additive for hydrocarbon fueled burners and flames to enhance efficiency and/or reduce undesirable emissions, such as pollutants. The fuel additive of the invention includes a phosphorus-containing parent solution. The phosphorus salts are at least partially dispersed and/or dissolved in water or other appropriate solvent to create a phosphorus-containing parent solution that forms the basis for the fuel additive. The phosphorus-containing parent solution is added or mixed with a dispersion fluid.

Patent FR2113187A5

Aqueous lignin dispersions and methods of preparing the same

Method of forming colloidal lignin particles, comprising the step of dissolving lignin in a mixture of organic solvents, feeding of the said solution into water, and forming acolloidal dispersion of lignin. The used solvents are recovered with methods such as distillation and reused in the process. Water is removed from the colloidal dispersion by ultrafiltration and reused in the process. The concentrated colloidal dispersion is dried by spray drying. The invention can be used in applications where the colloidal nature of lignin will afford an advantage over bulk lignin.

Method of preparing cerium dioxide nanoparticles

A method of making cerium dioxide nanoparticles includes: a) providing an aqueous reaction mixture having a source of cerous ion, a source of hydroxide ion, a nanoparticle stabilizer, and an oxidant at an initial temperature no higher than about 2O°C; b) mechanically shearing the mixture and causing it to pass through a perforated screen, thereby forming a suspension of cerium hydroxide nanoparticles; and c) raising the initial temperature to achieve oxidation of cerous ion to eerie ion and thereby form cerium dioxide nanoparticles having a mean diameter in the range of about 1 nm to about 15 nm. The cerium dioxide nanoparticles may be formed in a continuous process.

Method for manufacturing silica aerogel

Process for the production of very fine mineral oxide dust and installation for the implementation of this process

Improvements in or relating to thixotropic emulsion compositions

A thixotropic emulsion comprises an aqueous emulsion of a film-forming addition polymer containing a natural or synthetic water-soluble hydroxyl group-containing organic colloid together with 0,25 to 5% by weight of the emulsion of a water-soluble titanium chelate, e.g. diisopropoxy bis-(beta-diethanolamine ethoxy) titanate, dibutoxy bis-(beta-N-methyl ethanolamine ethoxy) titanate, diisopropoxy bis-(acetylacetonyl) titanate, diisopropoxy bis-(ethylacetoacetyl) titanate and dihydroxy titanium lactate. Polymer emulsions specified are those of polyvinyl acetate, copolymers of vinyl acetate with vinyl caprate and dibutyl fumarate and a copolymer of styrene, ethyl acrylate acrylonitrile and methacrylic acid. Water-soluble colloids specified are sodium and aluminium carboxymethyl cellulose, sodium carboxymethyl starch, hydroxyethyl cellulose, polyvinyl alcohol and alginates. The emulsions may also contain pigments, extenders, and emulsifiers such as titanium dioxide, talc, asbestine, mica, whiting, china clay, barytes, a naphthalene-formaldehyde condensation product and sodium hexametaphosphate. Specification 811,425 is referred to.

Al (aluminum)2O3-B2O3-SiO2Composite sol, core-shell structure active carbon fiber and preparation method thereof

本发明涉及一种Al 2 O 3 ‑B 2 O 3 ‑SiO 2 复合溶胶、核壳结构活性炭纤维及其制备方法，属于活性炭纤维技术领域，解决了现有技术中活性炭纤维本身固有强度低的技术问题。本发明提供的核壳结构活性炭纤维的制备方法包括：步骤1、利用马来酸酐对再生纤维素纤维进行表面改性，得到改性再生纤维素纤维；步骤2、利用Al 2 O 3 ‑B 2 O 3 ‑SiO 2 复合溶胶对改性再生纤维素纤维进行表面修饰处理，将得到的修饰层进一步凝胶固化；步骤3、将修饰后的再生纤维素纤维进行碳化与活化处理，制得具有Al 2 O 3 ‑B 2 O 3 ‑SiO 2 复合氧化物修饰层的核壳结构活性炭纤维。本发明提供的核壳结构活性炭纤维能够大幅提高产物的强度、柔韧性和可织造性能。

Dry blend thickening composition containing benzoquinone and polygalactomannan gum

This invention provides a particulate dry blend thickening agent consisting of polygalactomannan gum (e.g., guar gum), benzoquinone, and a basic reagent (e.g., sodium carbonate). This invention further provides a process for preparing a viscoelastic aqueous solution which contains a benzoquinone ether adduct of polygalactomannan gum that is formed in situ. An invention thixotropic aqueous medium is characterized by excellent heat stability and high tolerance to the presence of inorganic salts. A unique property of an invention thixotropic aqueous medium is a time-dependent gradual restoration of high viscosity after cessation of high shear deformation.

Method of forming particulate material from salt solutions

Method for the synthesis of inert metal nanoparticles

The stable colloid nanoparticles obtaining method involves carrying out single laser ablation of a submerged solid target in a liquid medium that contains metallic salts. An independent claim is also included for nanoparticles synthesized by the method.

Nano-diamond dispersion solution and method for preparing same

The present invention relates to a nano-diamond dispersion solution and a method for preparing the same. The method for preparing a nano-diamond dispersion solution comprises the following steps: providing a nano-diamond aggregation; mixing the nano-diamond aggregation with a metal hydroxide solution and stirring the mixture such that the nano-diamond aggregation is separated, to obtain a mixture solution; stabilizing the mixture solution such that the mixture solution is separated into a supernatant and precipitates; and extracting the supernatant and precipitates.

Methods of manufacturing titanium-based carbonitride alloys

The present invention pertains to environment-friendly and economic preparation, handling, and spray drying of slurries for the production of titanium based carbonitride alloys. The slurry is based on ethanol and water and comprises raw materials for the end product as well as polyethylene glycol (PEG) and a low concentration of polyethylenimine (PEI). The concentration of PEI is 0.1-0.7 % of the raw material weight. Hereby, slurries with low viscosities are produced which require less use of ethanol and energy, as well as manpower and equipment time in their preparation, handling, and spray drying.

Handleable calco-magnesian suspension

A calco-magnesian aqueous suspension comprising solid particles of general formula a Ca(OH) 2 .b Mg(OH) 2 .c MgO in an aqueous phase at a concentration greater than or equal to 200 g/kg, in which a, b and c represent mass fractions of which the sum is between 90 and 100% and an additive that simultaneously reduces viscosity and moderates the increase in viscosity, in which said additive is a phosphonate or a phosphonic acid.

Method for controlling microbial contamination, mineral suspensions obtained and uses thereof

本发明涉及矿物材料水分散体和/或水悬浮液的消毒和/或防腐和/或降低和/或控制其微生物污染的方法，并且确保在Brookfield粘度方面为所述矿物材料水分散体和/或悬浮液提供良好稳定性。本发明还涉及如此得到的所述水分散体和/或悬浮液以及它们在矿物、纸和油漆工业中的用途。本发明进一步涉及所获得的最终产品。

Treatment of optical brightening agents

A process for preparing high internal phase ratio emulsions and latexes derived thereof

본 발명은, The present invention, a) 유화 및 안정화 양의 계면활성제의 존재하에 유속 R 1 을 갖는 연속상 액체 스트림 및 유속 R 2 를 갖는 분산상 액체 스트림을 연속적으로 분산기내로 도입시키는 단계; 및 a) introducing into a continuous phase liquid stream and an in-flight distribution of the dispersed phase liquid stream having a flow rate R 2 in a row having a flow rate R 1, and emulsified in the presence of a stabilizing amount of a surfactant; And b) 상기 도입된 스트림을 충분량의 전단력 및 충분히 일정한 R 2 :R 1 에 의해 혼합하여 상 역전없이 또는 외부상에 불연속상을 단계적으로 분포시키지 않으면서 고 불연속상 비의 유화액을 형성하는 단계를 포함하며, b) mixing the introduced stream by a sufficient amount of shear force and a sufficiently constant R 2 : R 1 to form a high discontinuous phase ratio emulsion without phase inversion or without distributing the phase discontinuously in the external phase; , 이때 R 2 :R 1 은, 하한치가 고 불연속상 비의 유화액의 용적 평균 입자 크기가 R 2 :R 1 에 대해 역 의존성을 나타내기 시작하는 시점으로 정의되고, 상한치가 고 불연속상 비의 유화액의 상 역전이 발생하는 R 2 :R 1 의 바로 미만인 범위를 포함하는, 고 불연속상 비의 유화액을 상 역전없이 제조하는 방법에 관한 것이다. 본 발명의 방법을 사용하여 단일분산성 1미크론 이하 크기의 입자가 제조될 수 있다. 상기 고 불연속상 비의 유화액으로부터 유용한 라텍스가 제조될 수 있다. Wherein R 2 : R 1 is defined as the point at which the volume average particle size of the emulsion with high discontinuous phase ratio starts to show reverse dependence on R 2 : R 1 , and the upper limit of emulsion with high discontinuous phase ratio It relates to a method for producing a high discontinuous phase ratio emulsion without phase inversion, including the range just below R 2 : R 1 in which phase inversion occurs. Particles of monodisperse submicron size can be prepared using the process of the invention. Useful latexes can be prepared from these high discontinuous phase ratio emulsions.

Process for the separation of colloidal materials contained in liquids

Colloidal dispersion of a cerium compound and containing cerium iii, preparation method and use

L'invention concerne une dispersion colloïdale d'un composé de cérium contenant du cérium III. Cette dispersion est caractérisée en ce qu'elle présente une concentration en oxyde de cérium d'au moins 50g/l, un taux de cérium III par rapport au cérium total d'au moins 0,5%, une conductibilité d'au plus 5Ms/cm, un pH compris entre 4 et 8 et en ce qu'elle est constituée de particules présentant un diamètre moyen d'au plus 15nm. Elle est obtenue par un procédé dans lequel on fait réagir au moins un sel de cérium III avec une base et en présence d'un acide en quantité telle que le rapport H+/Ce soit supérieur à 1, puis on redisperse dans l'eau le précipité issu de la réaction précédente. Les dispersions de ce type peuvent être utilisées en catalyse, en lubrification, dans les céramiques, dans la fabrication de composés luminophores ou de films de polymères, dans la cosmétique et en tant qu'agents d'anticorosion.

Thixotropic quaternary ammonium aromatic cyclic imides

Device for the production of high grade solid-liquid mixtures

Die Vorrichtung kann z. B. zur Wasseraufbereitung oder zum Einbringen von Gasen und Flüssigkeiten verwendet werden und ist mit einem Aufnahmebehälter (1) ausgerüstet, der mit einem motorisch antreibbaren Mischwerk (4) versehen ist. Das Mischwerk weist eine vertikale Antriebswelle (5) auf, die an ihrem unteren freien Ende diametral gegenüberliegende Mischflügel (12) trägt. Das im Aufnahmebehälter (1) zu behandelnde Feststoff-Flüssigkeits-Gemisch wird über einen Einlauftrichter (3) und durch eine Füllöffnung (2) in den Aufnahmebehälter eingeführt. Während eines ersten Teils der Aufbereitungszeit des Feststoff-Flüssigkeit-Gemisches laufen die Mischelemente mit einer Umfangsgeschwindigkeit im Bereich von 60 bis 500 m/sec um. Es ist eine Steuereinrichtung vorgesehen, durch die die Umfangsgeschwindigkeit der Mischelemente in Abhängigkeit von der Viskosität des Feststoff-Flüssigkeit-Gemisches bis auf einen Mindestwert verringert wird. Dieser Mindestwert der Umfangsgeschwindigkeit kann im Bereich von 20 bis 60 m/sec liegen und wird bis zum Ende der Aufbereitungszeit konstantgehalten. Die Vorrichtung kann in einem diskontinuierlichen und in einem kontinuierlichen Betrieb betrieben werden. Im letzteren Fall wird die schwerere Phase der Charge mittels einer Pumpe (16) in eine Entnahmeleitung (18) gefördert, während die leichte Phase über die Rückführungsleitung (19) wieder in den Aufnahmebehälter (1) gelangt, in dem dann eine Menge eines Feststoff-Flüssigkeit-Gemisches eingeführt wird. The device can e.g. B. for water treatment or for introducing gases and liquids and is equipped with a receptacle (1) which is provided with a motor-driven mixer (4). The mixer has a vertical drive shaft (5) which carries diametrically opposite mixing blades (12) at its lower free end. The solid-liquid mixture to be treated in the receptacle (1) is introduced into the receptacle via an inlet funnel (3) and through a filling opening (2). During a first part of the preparation time of the solid- ...

Colloidal dispersion of a cerium compound and containing cerium iii, preparation method and use

Suspensions of particles in non-aqueous solvents

A non-aqueous suspension comprising solid particles, polyalkylene glycol and a suspension stabilizer comprising hydrogenated castor oil or wax.

Manufacturing method of optical member comprising multi layered low-reflection coating layer and optical member menufactured by the same

본 명세서는 다층형 저반사 코팅층을 포함하는 광학 부재의 제조방법 및 이를 이용하여 제조된 광학 부재를 제공한다. The present specification provides a method of manufacturing an optical member including a multilayer type low-reflection coating layer and an optical member manufactured using the same.

PROCESS FOR DISPERSION OR SUSPENSION OF A SOLID PHASE IN A LIQUID PHASE

Procédé de dispersion ou de mise en suspension d'une phase solide dans une phase liquide à l'intérieur d'un mélangeur. La phase solide est introduite dans le mélangeur 10 par une entrée 11, alors que la phase liquide arrive par un conduit 13. Le mélangeur est conçu de manière à former avec ces deux phases une troisième phase à consistance plastique, progressant lentement vers la sortie qu'elle atteint sous la forme d'une quatrième phase fluide. Domaine d'application : production de dispersions ou de suspensions diverses. Process for dispersing or suspending a solid phase in a liquid phase inside a mixer. The solid phase is introduced into the mixer 10 through an inlet 11, while the liquid phase arrives through a conduit 13. The mixer is designed so as to form with these two phases a third phase of plastic consistency, progressing slowly towards the outlet which 'it reaches in the form of a fourth fluid phase. Field of application: production of various dispersions or suspensions.

Lime-and-magnesium suspension, which is convenient in use

FIELD: chemistry. SUBSTANCE: aqueous lime-magnesia suspension contains solid particles corresponding to the general formula aCa(OH) 2 ⋅bMg(OH) 2 ⋅cMgO⋅dI in which a, b and c are weight fractions, the sum of which is from 90 to 100%, I is a material that can contain impurities selected from materials based on SiO 2 , Al 2 O 3 , Fe 2 O 3 , MnO, P 2 O 5 SO 3 , Calcium oxide, CaCO 3 and MgCO 3 , and d is from 0 to 10 wt %, in an aqueous medium. The concentration of solids is greater than or equal to 200 g/kg. The lime-magnesia suspension also contains an additive which is simultaneously a viscosity reducing agent and a viscosity retarding agent. The additive is a phosphonate or phosphonic acid, which are present in an amount of an active acid greater than or equal to 0.05 wt % and less than or equal to 5 wt %. EFFECT: invention makes it possible to increase the concentration of solids in the slurry with decreasing viscosity and slowing the viscosity increase when storing lime milk. 32 cl, 29 tbl, 11 ex

Chemo-mechanical surface modification of particles

Beschrieben wird ein Verfahren zur chemomechanischen Oberflächenmodifizierung von Partikeln, bei dem Partikel in einem Dispergiermittel in Anwesenheit von einem oder mehreren Modifizierungsmitteln mechanisch beansprucht werden, wobei mindestens ein Modifizierungsmittel zumindest teilweise an die mechanisch beanspruchten Partikel chemisch gebunden wird. Disclosed is a method of chemomechanical surface modification of particles wherein particles are mechanically stressed in a dispersant in the presence of one or more modifiers wherein at least one modifier is at least partially chemically bound to the mechanically stressed particles.

Hydrosols including microbubbles and related methods

Hydrosols including microbubbles and related methods are described. The microbubbles can increase the reflectivity of the water, thus, brightening the water. Consequently, light which would otherwise be absorbed by the water may be reflected. This limits the increase in water temperature which would otherwise result from such light absorption.

Method of preparing cerium dioxide nanoparticles

A method of making cerium dioxide nanoparticles includes: a) providing an aqueous reaction mixture having a source of cerous ion, a source of hydroxide ion, a nanoparticle stabilizer, and an oxidant at an initial temperature no higher than about 20° C.; b) mechanically shearing the mixture and causing it to pass through a perforated screen, thereby forming a suspension of cerium hydroxide nanoparticles; and c) raising the initial temperature to achieve oxidation of cerous ion to eerie ion and thereby form cerium dioxide nanoparticles having a mean diameter in the range of about 1 nm to about 15 nm. The cerium dioxide nanoparticles may be formed in a continuous process.

Method of forming particulate material from metal salt solutions

Resinous compositions