KOLOPHONIUM-FETTSAÜRE VINYL POLYMER ZUSAMMENSETZUNGEN

COPOLYMERE UND DIESE ENTHALTENDE ÖL- UND WASSERABWEISENDE ZUSAMMENSETZUNGEN

POLYMERE FAERBEADDITIVE

POLYMERIC DYERECEPTIVE ADDITIVES

... 1522706 Dye-receptive polymers BAYER AG 31 Oct 1975 [15 Nov 1974] 45246/75 Heading C3P A dye-receptive polymer comprises (A) 4 to 10 mol.% of an acrylic or methacrylic acid amide corresponding to the general Formula (I) in which R1 represents H or CH3, R2 represents a linear or branched alkylene radical, optionally substituted by an aryl group, or an arylene radical, and M represents a primary, secondary, tertiary or quaternary ammonium group, a lithium cation or a magnesium cation equivalent; (B) 10 to 50 mol.% of vinyl chloride, vinylidene chloride or vinyl bromide, and (C) 30 to 80 mol.% of at least one other halogenfree compound of general Formula (II) in which R3 represents H or CH3, and R4 represents the group -C#N, where R5 is C1 to C4-alkyl, or the group where R5 is C1 to C4-alkyl, and R6 represents H or CH3. The polymer is produced in an amide containing aprotic solvent, e.g. dimethyl formamide or dimethyl acetamide containing up to 10% by weight of water. Examples are given in ...

PROCEDURE FOR THE PRODUCTION OF A COAT MASS

PROCEDURE FOR THE PRODUCTION OF A COAT MASS

COPOLYMERS AND THIS CONTAINING ONE OIL AND WATER-REJECTING COMPOSITIONS

RESIN COMPOSITION

Abstract of the Disclosure A water reducible resin composition, a water reducible admixture of such resin with solvents and plasticizers, a water reduced form of such mixture suitable for a coating, and a coating prepared from such water reduced mixture. Said resin is required to be prepared from a balance of hydrophobic enhancing and hydrophilic enhancing monomers. Generally such hydrophobic enhancing monomers are required to be a balance of monomers promoting hard and soft segments of the resin.

COPOLYMERS AND OIL- AND WATER-REPELLENT COMPOSITIONS CONTAINING THEM

The present invention is directed to a copolymer capable of forming a water- and oil-repellent agent that enables binding to textiles and other materials without the production of formaldehyde. The copolymer according to the present invention comprises a) a fluoroaliphatic radical-containing agent, (b) stearyl (meth)acrylate; (c) a chlorine-containing compound; and (d) a monomer selected from those that contain an anhydride functional group or are capable of forming an anhydride functional group. The present invention further provides a water and oil repellency-imparting composition for fibrous and other substrates, the composition comprising the above copolymer together with a catalyst, such as sodium hypophosphite, for forming anhydrides from the acid- containing monomers in the copolymer. The composition can further optionally comprise other additives such as, for example, poly(acrylic acid); an extender, a softener; an antioxidant; a surfactant; and/or a plasticizer.

COMPOSITION OF SOLUBLE IN WATER RESIN

CROSSLINKABLE ELECTROACTIVE FLUORINATED POLYMERS

The invention relates to a copolymer comprising units derived from monomers of vinylidene fluoride and/or trifluoroethylene, as well as fluorinated monomers X comprising a double bond and a leaving group selected from among chlorine, bromine and iodine atoms, the leaving groups being partially replaced by azide groups in the copolymer. 1. A copolymer comprising units obtained from vinylidene fluoride and/or trifluoroethylene monomers and from fluoro monomers X comprising a double bond and a leaving group selected from chlorine , bromine and iodine atoms , the leaving groups being partially replaced by azide groups in the copolymer.2. The copolymer as claimed in claim 1 , wherein the fluoro monomers X are selected from chlorotrifluoroethylene and chlorofluoroethylene.3. The copolymer as claimed in claim 1 , comprising both units obtained from vinylidene fluoride monomers and units obtained from trifluoroethylene monomers.4. The copolymer as claimed in claim 1 , comprising a total amount of units obtained from fluoro monomers X of 1 to 20 mol %.5. The copolymer as claimed in claim 1 , wherein the molar proportion of leaving groups in the copolymer that are replaced with azide groups is from 5 to 90%.6. A composition comprising the copolymer as claimed in claim 1 , wherein the composition is a solution or dispersion of the copolymer in a liquid vehicle.7. A process for preparing a copolymer as claimed in claim 1 , comprising:supplying a starting copolymer comprising units obtained from vinylidene fluoride and/or trifluoroethylene monomers and also from said fluoro monomers X;contacting the starting copolymer with a compound comprising an azide group.8. The process as claimed in claim 7 , wherein the compound comprising an azide group is sodium azide.9. The process as claimed in claim 7 , wherein the contacting is carried out in a solvent selected from the following: dimethylformamide; dimethylacetamide; dimethyl sulfoxide; ketones; furans claim 7 , especially ...

Maleimid-Copolymer, Maleimid-Blockcopolymer und Verfahren zur Herstellung eines Maleimid-Blockcopolymers.

PROCEDURE FOR THE PRODUCTION OF AN AQUEOUS POLYMER DISPERSION

PROCEDURE FOR THE PRODUCTION OF AQUEOUS DISPERSIONS OF LATEXPARTIKELN WITH HETEROGENEOUS MORPHOLOGY, LATEXPARTIKEL MANUFACTURED BY THIS PROCEDURE, THESE DISPERSIONS AND REDISPERGIERBARE POWDERS AND THEIR USE

VERFAHREN ZUR HERSTELLUNG EINER UEBERZUGSMASSE

VCM (vinyl chloride monomer) modified polymer resin and synthesis method thereof

The invention discloses a production technology of a VCM (vinyl chloride monomer) modified polymer resin. The production technology comprises the following steps of: 1) adding a dispersing agent to a polymeric kettle after dissolving, adding deionized water and other materials, agitating and evenly mixing; 2) heating the polymeric kettle to 200-300 DEG C to react for 6-12 hours, and stopping the polymerization reaction when the polymerization pressure is reduced to 3-5 kg/cm<3>; 3) recovering a monomer gas after the polymerization reaction is ended, recovering un-reacted vinyl chloride and hydroxypropyl methacrylate in the resin into a middle tank to recycle after heating, compressing condensation and vacuum supply; 4) feeding the unrecovered polymerization reaction product to a centrifugal machine, and adding a condensed liquid to a condensation kettle of the centrifugal machine, and carrying out centrifugal dewatering, so as to obtain a wet material of which the moisture content is 20% ...

Cold-resistant high-adhesion leather finishing material

POLYMERIC ADDITIVES OF DYEING

PERFECTIONING IN PROCESS FOR FORMATION OF AN APPROPRIATE RESIN FOR USE IN A COMPOSITION DILUIVEL IN WATER

Process for the preparation of an aqueous polymer dispersion

A process for the preparation of an aqueous polymer dispersion, in which an aqueous dispersion of a polymer which contains at least two monomers A and B which differ from one another, have at least one ethylenically unsaturated group and are incorporated in chemically bonded form is produced, in a manner known per se, so that the total content of monomers which are free, ie. Not chemically bonded, and have at least one ethylenically unsaturated double bond in the aqueous polymer dispersion is from > 0 to 1 % by weight, based on the aquous polymer dispersion, and this residual monomer content is then reduced by the action of a free radical redox initiator system comprising at least one oxidizing agent and at least one reducing agent, in which the redox initiator system comprises, as the reducing agent, the adduct of a ketone of 3 to 8 carbon atoms with the bisulfite anion or the conjugated acid of this adduct.

ROSIN FETTSAÜRE VINYL POLYMER COMPOSITIONS

VERFAHREN ZUR HERSTELLUNG VON POLYMEREN FARBEADDITIVEN

PROCEDURE FOR THE PRODUCTION OF POLYMERS COLOR ADDITIVES

ROSIN-FATTY ACID VINYLIC POLYMER COMPOSITIONS

This invention relates to novel rosin-fatty acid vinylic polymer compositions and the process for preparing them. In particular, the invention relates to novel rosin-fatty acid vinylic polymer compositions that exhibit properties which make them useful as components of paper sizes, as components of coatings, and as support resins for producing polymer latices that can be employed in formulating water-based coatings and inks. More particularly, these rosin-fatty acid vinylic polymer compositions are mixtures that are produced by the addition polymerization reaction of vinylic monomers in the presence of saturated fatty acids, hydrogenated dimer acids, hydrogenated rosins, or mixtures thereof.

A PROCESS FOR THE PREPARATION OF AQUEOUS DISPERSIONS OF LATEX PARTICLES HAVING A HETEROGENEOUS MORPHOLOGY, THE LATEX PARTICLES OBTAINABLE WITH THE PROCESS, THE DISPERSIONS AND REDISPERSIBLE POWDERS, AS WELL AS THE USE THEREOF

The invention relates to a process for the preparation of aqueous dispersions of latex particles having a heterogeneous morphology by a semicontinuous emulsion polymerization, comprising the emulsion polymerizing of ethylenically unsaturated (co)monomers, accompanied by the addition of cationic and/or anionic and/or nonionic emulsifiers and/or protective colloids as stabilizers, which are directly used as such or synthesized in situ, the semicontinuous emulsion polymerization being performed in the presence of the stabilizer or stabilizers with a monomer mixture, which a) contains at least one nonionic, ethylenically unsaturated monomer with a glass transition temperature Tg above about 30 ~C in a quantity of about 10 to 70 wt.%, based on the total weight of ethylenically unsaturated (co)monomers and b) at least one hydrophilic, ethylenically unsaturated monomer in a quantity of about 5 to 30 wt.%, based on the total weight of ethylenically unsaturated (co)monomers.

RESIN COMPOSITION

ROSIN-FATTY ACID VINYLIC POLYMER COMPOSITIONS

This invention relates to novel rosin-fatty acid vinylic polymer compositions and the process for preparing them. In particular, the invention relates to novel rosin-fatty acid vinylic polymer compositions that exhibit properties which make them useful as components of paper sizes, as components of coatings, and as support resins for producing polymer latices that can be employed in formulating water-based coatings and inks. More particularly, these rosin-fatty acid vinylic polymer compositions are mixtures that are produced by the addition polymerization reaction of vinylic monomers in the presence of saturated fatty acids, hydrogenated dimer acids, hydrogenated rosins, or mixtures thereof.

COATING COMPOSITION

... 1491366 Coating composition GOODYEAR TIRE & RUBBER CO 10 Oct 1975 [4 Nov 1974] 41613/75 Heading C3P [Also in Division B2] A coating composition comprises an aqueous solution or dispersion prepared by (i) mixing and reacting sufficient amount of a volatile amine selected from primary, secondary and tertiary amines having a melting point of -40-25‹ C. and a boiling point of 50-150‹ C3 with a water dilutable composition composed of a solution or other mixture of (a) a solid, particulate resin, or an emulsion polymerization mixture containing a solid, particulate resin, (b) coalescing solvent, and (c) plasticizer, and (ii) mixing sufficient water therewith to form a stable dispension or solution of said composition having a pH 8-14; where said water reducible composition comprises a solution or other mixture of 100 parts by weight of the solid resin with 50-100 parts by weight of a coalescing solvent therefor comprising at least one solvent selected from ethylene glycol monomethyl ...

PROCEDURE FOR THE PRODUCTION OF POLYMERS COLOR ADDITIVES

Textile additive capable of improving stripping strength

Microsphere for electronic papers and uses thereof

The invention relates to a microsphere used for synthesizing electronic paper by embedding dyes as well as the synthesis and application thereof. The invention is characterized in that the microsphere comprises an inner core and a shell; wherein, the inner core is polymer embedding dye. The polymer is formed by copolymerization of the following selected monomers: styrene, divinyl benzene, methyl metharcrylate, isobutyl methacrylate, n-butyl methacrylate, methacrylate, 4-vinylpridine, ethyl acrylate, butyl acrylate, acrylonitrile, glycidolmethacrylate, allyl methacrylate, methylacrylic acid, acrylic acid, vinyl acetate or perchloroethylene; the shell is polymerized by the following monomers: ethylene monomer containing a epoxy group or ethylene monomer containing a pyridyl in a side chain. The microsphere used for electronic paper in the invention has the advantages of excellent flexibility and anti-aggregation performance, thus keeping the stability of microsphere in the medium.

ГАЛОГЕНСОДЕРЖАЩИЕ ВИНИЛОВЫЕ СМОЛЫ И СПОСОБ ИХ ПОЛУЧЕНИЯ

... 1. Винилиденхлоридная смола, отличающаяся тем, что смола свободна от пыли и мелких частиц смолы и тем, что смола состоит из сокоагулятов частиц винилиденхлоридных смол и частиц, выбранных из группы, состоящей из технологических добавок, стабилизаторов (таких как термические стабилизаторы), пластификаторов и/или других смол. 2. Винилиденхлоридная смола по п.1, отличающаяся тем, что частицы винилиденхлоридной смолы и частицы, выбранные из группы, состоящей из технологических добавок, стабилизаторов (таких как термические стабилизаторы), пластификаторов и других смол сокоагулятов гомогенно распределены по диаметру каждого сокоагулята. 3. Винилиденхлоридная смола по любому из пп.1 и 2, отличающаяся тем, что частицы винилиденхлоридной смолы представляют собой частицы сополимеров мономеров винилиденхлорида и, по меньшей мере, одного другого мономера. 4. Винилиденхлоридная смола по п.3, отличающаяся тем, что частицы винилиденхлоридной смолы представляют собой частицы сополимеров мономеров винилиденхлорида ...

VERFAHREN ZUR HERSTELLUNG VON WÄSSRIGEN DISPERSIONEN VON LATEXPARTIKELN MIT HETEROGENER MORPHOLOGIE, LATEXPARTIKEL HERGESTELLT DURCH DIESES VERFAHREN, DIESE DISPERSIONEN UND REDISPERGIERBARE PULVER UND DEREN VERWENDUNG

Copolymers and oil- and water-repellent compositions containing them

HIGH TEMPERATURE VISCOSITY STABLE THICKENER

A hydrophobe-containing alkali soluble or swellable copolymer thickener comprising an emulsion polymerization product of (A) an ethylenically unsaturated copolymerizable surfactant monomer having a cloud point of from about 65.degree.C to about 95.degree.C, wherein the surfactant monomer has the formula M(EO)x(PO)y(BO)zOR1 wherein M is a residue selected from the group consisting of an ethylenically unsaturated carboxylic acid, ethylenically unsaturated dicarboxylic acid, and a copolymerizable isocyanate; EO is an ethylene oxide unit; PO is a propylene oxide unit; BO is a butylene oxide unit; x is from 10 to 45; y is from 0 to 35; z is from 0 to 35; provided that x + y + z is from 20 to 45; and R1 is selected from the group consisting of alkyl, alkylene, cycloalkyl, cycloalkylene, and arylalkyl group wherein the alkyl group has 1 to 30 carbon atoms; (B) an .alpha., .beta.-ethylenically unsaturated monocarboxylic acid monomer; and (C) a nonionic .alpha., .beta.-ethylenically unsaturated ...

Waste polystyrene environment-friendly fire-retardant functional coating

COMPOSITION OF SOLUBLE IN WATER RESIN

POLYMERIC DYE-RECEPTIVE ADDITIVES

POLYMERIC DYE-RECEPTIVE ADDITIVES The invention relates to polymeric dye-receptive additives for modacrylics consisting of 4 - 1o mol % of an acrylic or methacrylic acid amide corresponding of the general formula 1o - 5o mol % of vinyl chloride and/or vinylidene chloride and/or vinyl bromide and 3o - 8o mol % of at least one halogen-free component corresponding to the general formula as well as to a process for the production of these additives.

LOW SURFACE TENSION COSMETIC COPOLYMERS

L'invention porte sur un copolymère vinylique comprenant des motifs de répétition de A, B et C. Ces copolymères ont une teneur en acide comprise entre 0,015 et 0,50 milliéquivalents par gramme. L'invention porte sur des compositions qui comprennent ces copolymères dans des formes à manipulation facile, et sur des compositions cosmétiques comprenant le copolymère précité.

Copolymers of trichloroethylene

Trichlorethylene and an organic compound having an ethylenic double bond conjugated with a multiple bond between carbon and carbon, nitrogen or oxygen are co - poly - merized, the proportion of trichloroethylene being such that the copolymer does not contain more than 25 per cent of trichloroethylene. Organic compounds specified are methyl-, ethyl-, butyl-, octyl-, octadecyl-, cyclohexyl-, phenyl-, and b -chloroethylacrylates, methacrylates and a -chloroacrylates, styrene, vinylnaphthalene, methyl vinyl ketone, methyl isopropenyl ketone, acrylonitrile, methacrylonitrile, butadiene, chloroprene and isoprene. Polymerization may be carried out in aqueous emulsion. Suitable emulsifying agents are sodium, potassium and ammonium palmitates, mono-, di- or triethanolamine laurates and palmitates, lauryl and octadecyltrimethyl-ammonium bromide, sodium dodecylsulphate, cetysulphate, octadecenylsulphate and acetoxyoctadecyl-sulphate, sodium, potassium, ammonium or amine salts of alkyl-naphthalene ...

Low surface tension cosmetic copolymers

ROSIN-FATTY ACID VINYLIC POLYMER COMPOSITIONS

Method of producing an aqueous polymer dispersion

RESIN COMPOSITION

POLYMERIC DYE-RECEPTIVE ADDITIVES

Low surface tension cosmetic copolymers

A vinylic copolymer comprising repeat units of A, B and C These copolymers have an acid content of 0.015 to 0.50 milliequivalents per gram of copolymer. Compositions that provide these copolymers in easily handled forms, and cosmetic compositions comprising the copolymer are also provided.

PROCESS FOR THE PRODUCTION OF FORMED ARTICLE OF AROMATIC VINYL RESIN

... : A process for the production of formed articles of aromatic vinyl resin having a small birefringence and a high refractive index by rapid and productive cast polymerization. The formed articles of aromatic vinyl resin being light and useful for the production of various optical elements, e.g. lenses and prisms.

METHOD OF PRODUCING AN AQUEOUS POLYMER DISPERSION

Described is a method of producing an aqueous polymer dispersion, the method calling for further polymerization of the dispersion using a radical mechanism redox initiator system including as the reducing agent the addition compound obtained between a lower ketone and hydrogen sulphite.

Resin composition

A water reducible resin composition, a water reducible admixture of such resin with solvents and plasticizers, a water reduced form of such mixture suitable for a coating, and a coating prepared from such water reduced mixture. Said resin is required to be prepared from a balance of hydrophobic enhancing and hydrophilic enhancing monomers. Generally such hydrophobic enhancing monomers are required to be a balance of monomers promoting hard and soft segments of the resin.

Fire retardant polymeric additives

A fire retardant additive comprising particles of a polymer of: ...

Copolymers and oil-and water-repellent compositions containing them

The present invention is directed to a copolymer capable of forming a water- and oil-repellent agent that enables binding to textiles and other materials without the production of formaldehyde. The copolymer according to the present invention comprises a) a fluoroaliphatic radical-containing agent, (b) stearyl (meth)acrylate; (c) a chlorine-containing compound; and (d) a monomer selected from those that contain an anhydride functional group or are capable of forming an anhydride functional group.The present invention further provides a water and oil repellency-imparting composition for fibrous and other substrates, the composition comprising the above copolymer together with a catalyst, such as sodium hypophosphite, for forming anhydrides from the acid-containing monomers in the copolymer. The composition can further optionally comprise other additives such as, e.g., poly(acrylic acid); an extender; a softener; an antioxidant; a surfactant; and/or a plasticizer.

ROSIN-FATTY ACID VINYLIC POLYMER COMPOSITIONS

Aq copolymer dispersions with low free monomer content

The prodn. of aq. polymer dispersions (I) comprises the prodn. of an aq. dispersion of a copolymer (I') of at least two different unsatd. monomers which contains up to 1 wt.% residual unsatd. monomer(s), followed by redn. of this residual monomer content by the action of a redox initiator system contg. an oxidising agent (II) and, as reducing agent (III), the bisulphite adduct of a 3-8C ketone and/or the conjugated acid of this adduct. Also claimed are dispersions (I) of acrylic acid copolymers contg. less than 100 mg free acrylic acid per kg aq. dispersion.

Verfahren zur Herstellung wäßriger Dispersionen von Latexteilchen mit heterogener Morphologie, die mit dem Verfahren erhältlichen Latexteilchen, die Dispersionen und redispergierbaren Pulver sowie deren Verwendung

The invention relates to a process for the preparation of aqueous dispersions of latex particles having a heterogeneous morphology by a semicontinuous emulsion polymerization, comprising the emulsion polymerizing of ethylenically unsaturated (co)monomers, accompanied by the addition of cationic and/or anionic and/or nonionic emulsifiers and/or protective colloids as stabilizers, which are directly used as such or synthesized in situ, the semicontinuous emulsion polymerization being performed in the presence of the stabilizer or stabilizers with a monomer mixture, which a) contains at least one nonionic, ethylenically unsaturated monomer with a glass transition temperature Tg above about 30 DEG C in a quantity of about 10 to 70 wt.%, based on the total weight of ethylenically unsaturated (co)monomers and b) at least one hydrophilic, ethylenically unsaturated monomer in a quantity of about 5 to 30 wt.%, based on the total weight of ethylenically unsaturated (co)monomers.

PROCESS FOR THE PRODUCTION OF FORMED ARTICLE OF AROMATIC VINYL RESIN

High temperature viscosity stable thickener

High temperature viscosity stable thickener

PRODUCTION OF ACRYLONITRILE POLYMER

PURPOSE: In copolymerizing acrylonitrile with vinyl chloride, etc., to obtain the titled colorless and flame-retardant polymer in high polymerization productivity without causing reduction in molecular weight, by adding an organotin compound to the reaction system at a specific point of time. CONSTITUTION: Before beginning of polymerization or at a point before the conversion to a polymer reaches 20wt% based on total amount of monomers, (A) an organotin compound (preferably, dibutyltin dilaurymethyl mercaptide, etc.) is added to a reaction system, and a mixture consisting of (B) 40W80wt% acrylonitrile and (C) 20W60wt% vinyl chloride and/or vinylidene chloride, and if necessary, (D) ≤10wt% another monoolefinic monomer (e.g., styrenesulfonic acid, etc.) is subjected to solution polymerization, to give the desired polymer. The polymerization temperature is preferably 30W70°C, and the monomer concentration is preferably 25W65wt% based on the whole polymerization system. COPYRIGHT: (C)1984,JPO ...

A process for the preparation of aqueous dispersions of latex particles having aheterogeneous morphology, the latex particles obtainable with the process, the dispersions and redispersible powders, as well as the use thereof

ACRYLONITRILE POLYMER, PRODUCTION THEREOF AND SYNTHETIC FIBER THEREFROM

PURPOSE: The titled polymer capable of providing flame-resistant fibers excellent in resistance to loss of transparency, prepared by polymerizing acrylonitrile, vinyl chloride and/or vinylidene chloride and a sulfonic acid group-containing vinyl monomer under specified conditions. CONSTITUTION: An acrylonitrile polymer prepared by polymerizing 40W65wt% acrylonitrile, 31W59.9wt% vinyl chloride and/or vinylidene chloride and 0.1W 4wt% sulfonic acid group-containing vinyl monomer satisfying formulaI, wherein Z1 and Z2 are monomer reactivity ratios of a sulfonic acid group-containing vinyl monomer and acrylonitrile, under conditions satisfying formula II, wherein X and Y are percentages, to the total polymer, of polymers which have been formed at the start and end of addition of the sulfonic acid group-containing monomer satisfying formulaI. It is possible to obtain a flame-resistant acrylonitrile synthetic fiber excellent in resistance to loss of transparency. COPYRIGHT: (C)1983,JPO&Japio ...

PROCESS FOR THE PRODUCTION OF FORMED ARTICLE OF AROMATIC VINYL RESIN

HIGH TEMPERATURE VISCOSITY STABLE THICKENER

RESIN COMPOSITION WATER-DILUTABLE

Fire retardant polymeric additives

A fire retardant additive comprising particles of a polymer of: ...

A process for the preparation of aqueous dispersions of latex particles having a heterogeneous morphology, the latex particles obtainable with the process, the dispersions and redispersible powders, as well as the use thereof

ALTERNATING COPOLYMERS OF TRICHLOROETHYLENE IN VINYL ACETATE

WATER DILUTABLE RESIN & COMPOSITIONS, PARTICULARLY COATING COMPOSITIONS

HIGH VISCOSITY STABILIZED THICKENING AGENT

PURPOSE: An alkali soluble or swelling copolymer thickening agent is provided to maintain or increase the viscosity of an aqueous composition at a high temperature. CONSTITUTION: The hydrophobic material-containing alkali soluble or swelling copolymer thickening agent to provide an aqueous composition with viscosity maintained or increased at about 120°C comprises: (a) based on the total weight of the copolymer, 0.1 to 25 wt.% of ethylene-based unsaturated copolymeric surfactant monomer with a cloud point of about 65 to 95°C and having the following formula: wherein M is a residual group selected from the group consisting of ethylene-based unsaturated carboxylic acid, ethylene-based unsaturated dicarboxylic acid and copolymeric isocyanate; PO is a propylene oxide unit; BO is a butylene oxide unit; X is an integer from 10 to 45; y is an integer from 0 to 35; z is an integer from 0 to 35; and x+y+z is 20 to 40; and R^1 is a C1-C30 alkyl group, an alkylene group, a cycloalkyl group, a cycloalkylene ...

COPOLYMERS AND OIL- AND WATER-REPELLENT COMPOSITIONS CONTAINING THEM

The present invention is directed to a copolymer capable of forming a water- and oil-repellent agent that enables binding to textiles and other materials without the production of formaldehyde. The copolymer according to the present invention comprises a) a fluoroaliphatic radical-containing agent, (b) stearyl (meth)acrylate; (c) a chlorine-containing compound; and (d) a monomer selected from those that contain an anhydride functional group or are capable of forming an anhydride functional group. The present invention further provides a water and oil repellency-imparting composition for fibrous and other substrates, the composition comprising the above copolymer together with a catalyst, such as sodium hypophosphite, for forming anhydrides from the acid-containing monomers in the copolymer. The composition can further optionally comprise other additives such as, for example, poly(acrylic acid); an extender, a softener; an antioxidant; a surfactant; and/or a plasticizer.

Maleimide copolymer, maleimide block copolymer and method for producing maleimide block copolymer

The maleimide copolymer of the invention is of the class of N-substituted maleimide copolymer such as N-alkyl or N-aromatic maleimide copolymer having peroxy bonds in a molecule, utilizable as a precursor for preparing a maleimide block copolymer and as a modifier for other resins. The maleimide block copolymer, which is useful as a molding material or a thermal resistance improver, is obtained by polymerizing maleimide monomers in the presence of a polymeric peroxide followed by polymerizing vinyl monomers.

MALEIMID-COPOLYMER, MALEIMID-BLOCKCOPOLYMER UND VERFAHREN ZUR HERSTELLUNG EINES MALEIMID-BLOCKCOPOLYMERS.

Production of an aqueous polymer dispersion

Method of producing an aqueous polymer dispersion

一种聚合物水分散液用这样一种方法制备，其中用含有低碳酮与亚硫酸氢盐的加成物作为还原剂的自由基氧化还原引发剂体系来进行后聚合。

Poly(chlorotrifluoroethylene/vinylidenefluoride/vinylester) copolymers with excellent long term ultraviolet light resistance

A composition containing a non-flammable chlorofluoro-olefin copolymer having a crystallinity index less than about 10% and a weight-average molecular weight greater than about 1,000,000 daltons, wherein the copolymer has at least two comonomer units of the formula:wherein each X is independently selected from H, Cl and F; Y is selected from H, Cl, F, O(CZ2)nCZ3, (CZ2)nCZ3, (OCZ2CZ2)nCZ3 and (O(CZ2)n)nCZ3, wherein each n is independently from about 1 to about 12 and each Z is independently selected from H, Cl and F; and A is selected from H, Cl and F, provided that for at least one comonomer unit, at least one of A, Y, either X or any Z is Cl. Substrates coated with the copolymer compositions are also disclosed.

A PROCESS FOR THE PREPARATION OF AQUEOUS DISPERSIONS OF LATEX PARTICLES HAVING A HETEROGENEOUS MORPHOLOGY, THE LATEX PARTICLES OBTAINABLE WITH THE PROCESS, THE DISPERSIONS AND REDISPERSIBLE POWDERS, AS WELL AS THE USE THEREOF

The invention relates to a process for the preparation of aqueous dispersions of latex particles having a heterogeneous morphology by a semicontinuous emulsion polymerization, comprising the emulsion polymerizing of ethylenically unsaturated (co)monomers, accompanied by the addition of cationic and/or anionic and/or nonionic emulsifiers and/or protective colloids as stabilizers, which are directly used as such or synthesized in situ, the semicontinuous emulsion polymerization being performed in the presence of the stabilizer or stabilizers with a monomer mixture, which a) contains at least one nonionic, ethylenically unsaturated monomer with a glass transition temperature Tg above about 30 ·C in a quantity of about 10 to 70 wt.%, based on the total weight of ethylenically unsaturated (co)monomers and b) at least one hydrophilic, ethylenically unsaturated monomer in a quantity of about 5 to 30 wt.%, based on the total weight of ethylenically unsaturated (co)monomers.

VERFAHREN ZUR HERSTELLUNG VON WÄSSRIGEN DISPERSIONEN VON LATEXPARTIKELN MIT HETEROGENER MORPHOLOGIE, LATEXPARTIKEL HERGESTELLT DURCH DIESES VERFAHREN, DIESE DISPERSIONEN UND REDISPERGIERBARE PULVER UND DEREN VERWENDUNG

Oil- and water-repellent finishes for textiles

The present invention is directed to a water- and oil repellency-imparting preparation for fibrous and other substrates, the preparation comprising a fluorinated polymer and a tacking monomer, oligomer or polymer containing at least one anhydride functional group or a group capable of forming an anhydride functional group, optionally together with an anhydride-forming catalyst, such as sodium hypophosphite. The preparation can further optionally comprise other additives such as, for example, an extender; a softener; an antioxidant; a surfactant; and/or a plasticizer.

High temperature viscosity stable thickener

A hydrophobe-containing alkali soluble or swellable copolymer thickener comprising an emulsion polymerization product of (A) an ethylenically unsaturated copolymerizable surfactant monomer having a cloud point of from about 65°C to about 95°C, wherein the surfactant monomer has the formula wherein M is a residue selected from the group consisting of an ethylenically unsaturated carboxylic acid, ethylenically unsaturated dicarboxylic acid, and a copolymerizable isocyanate; EO is an ethylene oxide unit; PO is a propylene oxide unit; BO is a butylene oxide unit; x is from 10 to 45; y is from 0 to 35; z is from 0 to 35; provided that is from 20 to 45; and R1 is selected from the group consisting of alkyl, alkylene, cycloalkyl, cycloalkylene, and arylalkyl group wherein the alkyl group has 1 to 30 carbon atoms; (B) an α, β-ethylenically unsaturated monocarboxylic acid monomer; and (C) a nonionic α, β-ethylenically unsaturated monomer. The copolymer provides aqueous compositions with constant ...

METHOD OF PRODUCING AN AQUEOUS POLYMER DISPERSION

Described is a method of producing an aqueous polymer dispersion, the method calling for further polymerization of the dispersion using a radical mechanism redox initiator system including as the reducing agent the addition compound obtained between a lower ketone and hydrogen sulphite.

Process for the production of formed article of aromatic vinyl resin

HARZ

COPOLYMERE UND DIESE ENTHALTENDE ÖL- UND WASSERABWEISENDE ZUSAMMENSETZUNGEN

Rosin-fatty acid vinylic polymer compositions

This invention relates to novel rosin-fatty acid vinylic polymer compositions and the process for preparing them. In particular, the invention relates to novel rosin-fatty acid vinylic polymer compositions that exhibit properties which make them useful as components of paper sizes, as components of coatings, and as support resins for producing polymer latices that can be employed in formulating water-based coatings and inks. More particularly, these rosin-fatty acid vinylic polymer compositions are mixtures that are produced by the addition polymerization reaction of vinylic monomers in the presence of saturated fatty acids, hydrogenated dimer acids, hydrogenated rosins, or mixtures thereof.

Coating composition

A water reducible resin composition, a water reducible admixture of such resin with solvents and plasticizers, a water reduced form of such mixture suitable for a coating, and a coating prepared from such water reduced mixture. Said resin is required to be prepared from a balance of hydrophobic enhancing and hydrophilic enhancing monomers. Generally such hydrophobic enhancing monomers are required to be a balance of monomers promoting hard and soft segments of the resin.

Fire retardant polymeric additives

A fire retardant additive comprising particles of a polymer of: ...

High-temperature expanded polymer microsphere and preparation method thereof

Vinyl ether-tri-or tetrachloro-ethylene interpolymerization products and process of producing the same

ACRYLONITRILE POLYMER, PRODUCTION THEREOF AND MODACRYLIC SYNTHETIC FIBER THEREFROM

PURPOSE: The titled polymer capable of providing flame-resistant fibers excellent in resistance to loss of transparency, prepared by polymerizing acrylonitrile, vinyl chloride and/or vinylidene chloride, and a sulfonic acid group-containing vinyl monomer, present in amounts to provide a specified composition range, under specified conditions. CONSTITUTION: An acrylonitrile polymer prepared by polymerizing 40W65wt% acrylonitrile, 31W59.9wt% vinyl chloride and/or vinylidene chloride, and 0.1W 4wt% sulfonic acid group-containing vinyl monomer satisfying formulaI, wherein Z1 and Z2 are monomer reactivity ratios of a sulfonic acid group-containing vinyl monomer and acrylonitrile, under conditions satisfying formula II, wherein S is precentage, to the total polymer, of polymer formed during the addition of a sulfonic acid group-containing monomer satisfying formulaI. It is possible to obtain a flame-resistant acrylonitrile synthetic fiber excellent in resistance to loss of transparency. COPYRIGHT ...

Copolymer and method for producing the same

Disclosed is a copolymer which is capable of providing an article surface with sufficient dynamic water repellency, water repellency after air-drying and friction durability, while having little burden on the environment. Also disclosed are a method for producing the copolymer, a water repellent composition, and an article having excellent dynamic water repellency, water repellency after air-drying and friction durability. The copolymer has a structural unit derived from the monomer (a) described below and a structural unit derived from the monomer (b) described below, with the ratio of the structural unit derived from the monomer (a) being 5-95% by mass and the ratio of the structural unit derived from the monomer (b) being 5-60% by mass relative to the total structural units (100% by mass). In the copolymer, the total ratio of the structural unit derived from the monomer (a) and the structural unit derived from the monomer (b) is not less than 65% by mass. Monomer (a): a (meth)acrylate ...

Preparation of an aqueous polymer dispersion

PCT No. PCT/EP95/00607 Sec. 371 Date Feb. 28, 1997 Sec. 102(e) Date Feb. 28, 1997 PCT Filed Feb. 22, 1995 PCT Pub. No. WO95/33775 PCT Pub. Date Dec. 14, 1995Described is a method of producing an aqueous polymer dispersion, the method calling for further polymerization of the dispersion using a radical mechanism redox initiator system including as the reducing agent the addition compound obtained between a lower ketone and hydrogen sulphite.

コポリマーならびにこれらを含む撥油性および撥水性組成物

... 本発明は、ホルムアルデヒドを生成することなく繊維基材および他の材料に結合し得る、撥水性および撥油性物質を生成し得る新規のコポリマーを指向する。本発明に従ったこのコポリマーは、(a)フッ素脂肪族ラジカル含有物質;(b)ステアリル(メタ)アクリレート;(c)塩素含有化合物;および(d)無水物官能基を含むモノマーまたは無水物官能基を生成し得るモノマーから選択されるモノマー、を含む。本発明はさらに、布および他の基材のための撥水性および撥油性を付与する組成物を提供し、この組成物は、上記のコポリマーを、コポリマー中の酸含有モノマーから無水物を生成するための触媒(例えば、次亜リン酸ナトリウム)と共に含む。この組成物はさらに、例えばポリ(アクリル酸);増量剤、軟化剤;酸化防止剤;および/または可塑剤を、必要に応じて含み得る。 ...

Verfahren zur Herstellung von Mischpolymerisaten

A high salt fog high weather resistance of the aqueous paint and method for preparing same

ACRYLIC COPOLYMER, ACRYLIC FIBER FOR ARTIFICIAL HAIR AND METHOD FOR MANUFACTURING SAME

In an embodiment of the present invention, an acrylic copolymer obtained by copolymerizing acrylonitrile, vinyl chloride and/or vinylidene chloride, and a sulfonic acid group-containing vinyl monomer has a weight-average molecular weight of 100,000 or less and a sulfur content of 0.35 wt% or more, and the ratio of the diffusion coefficient of the main chain to the diffusion coefficient of the sulfonic acid group-containing component, as measured by DOSY, is 1.07 or less. In an embodiment of the present invention, an acrylic fiber for artificial hair comprises the acrylic copolymer. In an embodiment of the present invention, when continuously polymerizing the monomer in a single reaction tank, the acrylic copolymer is prepared not by feeding the sulfonic acid group-containing vinyl monomer into the reaction tank at the start of the polymerization reaction, but rather by continuously feeding the sulfonic acid group-containing vinyl monomer at a constant rate after the start of the polymerization ...

A PROCESS FOR THE PREPARATION OF AQUEOUS DISPERSIONS OF LATEX PARTICLES HAVING A HETEROGENEOUS MORPHOLOGY, THE LATEX PARTICLES OBTAINABLE WITH THE PROCESS, THE DISPERSIONS AND REDISPERSIBLE POWDERS, AS WELL AS THE USE THEREOF

COATED GLASS FIBRE MESH FABRIC WITH REDUCED GROSS HEAT OF COMBUSTION

The invention is drawn to a glass fiber mesh fabric coated with an organic polymer coating having a reduced gross heat of combustion (less than 3.0 MJ/kg), said polymer coating comprising (i) from 60 wt % to 99.9 wt % of poly(vinylidene chloride) (PVDC) or a copolymer thereof; and (ii) from 0.1 wt % to 40 wt % of a formaldehyde-based resin selected from melamine-formaldehyde resins, phenol-formaldehyde resins, urea-formaldehyde resins or a combination thereof. The invention also provides a method for producing such a coated glass fiber mesh fabric. 1. A glass fiber mesh fabric coated with an organic polymer coating , wherein the organic polymer coating comprises: (i) from 60 wt % to 99.9 wt % of a poly(vinylidene chloride) (PVDC) or a copolymer thereof; and(ii) from 0.1 wt % to 40 wt % of a formaldehyde-based resin selected from the group consisting of a melamine-formaldehyde resin, a phenol-formaldehyde resin, a urea-formaldehyde resin and a combination thereof.2. The coated glass fiber mesh fabric according to claim 1 , comprising from 6 wt % to 20 wt % of the organic polymer coating claim 1 , measured as loss on ignition (LOI) claim 1 , relative to a total weight of the coated glass fiber mesh.3. The coated glass fiber mesh fabric according to claim 1 , wherein the organic polymer coating comprises from 0.1 to 10 wt % of the melamine-formaldehyde resin or the phenol-formaldehyde resin or the urea-formaldehyde resin or a combination thereof.4. The coated glass fiber mesh fabric according to claim 1 , wherein the organic polymer coating comprises a poly(vinylidene chloride) copolymer comprising from 75 to 98 wt % of vinylidene chloride monomer units and from 2 to 25 wt % of at least one comonomer selected from the group consisting of methyl acrylate claim 1 , ethyl acrylate claim 1 , butyl acrylate claim 1 , methyl methacrylate claim 1 , acrylonitrile claim 1 , methacrylonitrile claim 1 , an unsaturated carboxylic acid and vinyl chloride.5. The coated glass fiber ...

METHOD FOR REDUCING ODORIFEROUS AND/OR TOXIC RESIDUAL MONOMER IN A LATEX

The present invention relates to a new and efficient toxicity and/or odor reducing method for ethyl acrylate and/or acrylonitrile contained aqueous polymer dispersion.

Systems and Methods for Polyethylene Recovery with Low Volatile Content

The present invention discloses methods for removing volatile components from an ethylene polymer effluent stream from a polymerization reactor, and related polyethylene recovery and volatile removal systems. In these methods and systems, the polymer solids temperature is increased significantly prior to introduction of the polymer solids into a purge column for the final stripping of volatile components from the polymer solids. 1. A method for removing volatile components from an ethylene polymer effluent stream from an ethylene polymerization reactor , the method comprising:(i) reducing a pressure of the effluent stream to remove a first portion of the volatile components from polymer solids, the polymer solids having a solids temperature from about 10° F. to about 50° F. less than a reaction temperature in the ethylene polymerization reactor;(ii) fluidizing the polymer solids while heating to increase the solids temperature from at least about 10° F. above the solids temperature in step (i) and up to about 20° F. greater than the reaction temperature, and wherein a second portion of the volatile components are removed; and(iii) contacting the polymer solids with a stripping gas to remove a third portion of the volatile components to form a polymer solids stream containing less than 100 ppm by weight (ppmw) of volatile components.2. The method of claim 1 , wherein the ethylene polymerization reactor is a gas phase reactor claim 1 , and wherein:a volatile content of the ethylene polymer effluent stream is from about 5 to about 25 wt. % volatile components;the pressure in step (i) is reduced to a range from about 2 to about 10 psig;the polymer solids contain from about 0.5 to about 5 wt. % volatile components in step (i) after the first portion of volatile components is removed;the solids temperature in step (i) is from about 10° F. to about 20° F. less than the reaction temperature; andthe solids temperature in step (ii) is from at least about 15° F. above the ...

Systems and Methods for Polyethylene Recovery with Low Volatile Content

The present invention discloses methods for removing volatile components from an ethylene polymer effluent stream from a polymerization reactor, and related polyethylene recovery and volatile removal systems. In these methods and systems, the polymer solids temperature is increased significantly prior to introduction of the polymer solids into a purge column for the final stripping of volatile components from the polymer solids. 120-. (canceled)21. A method for removing volatile components from an ethylene polymer effluent stream from an ethylene polymerization reactor , the method comprising: the pressure is reduced to a range from about 2 to about 200 psig, and', 'the polymer solids have a solids temperature from about 10° F. to about 50° F. less than a reaction temperature in the ethylene polymerization reactor;, '(i) reducing a pressure of the effluent stream to remove a first portion of the volatile components from polymer solids, wherein(ii) fluidizing the polymer solids while heating to increase the solids temperature from at least about 10° F. above the solids temperature in step (i) and up to about 20° F. greater than the reaction temperature, and wherein a second portion of the volatile components are removed; and(iii) contacting the polymer solids with a stripping gas to remove a third portion of the volatile components to form a polymer solids stream containing less than 40 ppm by weight (ppmw) of volatile components.22. The method of claim 21 , wherein:the polymer solids are fluidized in step (ii) with a fluidizing gas having a temperature from about 10° F. less than to about 20° F. greater than the reaction temperature;the fluidizing gas further comprises a catalyst deactivating agent; andthe stripping gas comprises nitrogen, ethylene, fuel gas, propane, ethane, or any combination thereof.23. The method of claim 21 , wherein the ethylene polymerization reactor is a gas phase reactor claim 21 , and wherein:a volatile content of the ethylene polymer ...

A process for the reduction of the residual monomer content of water-absorbent foam

A process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water absorbent crosslinked polymer foams containing units derived from monoethylenically unsaturated acids, which comprises treating the formed articles with at least 0.5% by weight of a polymer containing primary and/or secondary amino groups and having a molar mass of at least 300, the formed foam articles thus obtainable and use of the wet strength enhanced formed foam articles in hygiene articles.

Method of producing articles from syndiotactic vinyl aromatic polymers

The present invention relates to a process of producing a molded article from a composition comprising a syndiotactic vinyl aromatic polymer, wherein the molded article has a residual vinyl aromatic monomer content of less than 0.05 per 100 parts syndiotactic vinyl aromatic polymer comprising molding a composition of a syndiotactic vinyl aromatic polymer having a residual vinyl aromatic monomer content of less than 0.3 parts per 100 parts syndiotactic vinyl aromatic polymer, at a temperature of from 265° C. to 305° C. to produce a molded article; and heat treating the molded article at a temperature of 210° C. to 230° C. for at least 2 minutes to thermally initiate free radical polymerization of the residual monomer.

Method of producing articles from syndiotactic vinyl aromatic polymers

The present invention relates to a process of producing a molded article from a composition comprising a syndiotactic vinyl aromatic polymer, wherein the molded article has a residual vinyl aromatic monomer content of less than 0.05 per 100 parts syndiotactic vinyl aromatic polymer comprising molding a composition of a syndiotactic vinyl aromatic polymer having a residual vinyl aromatic monomer content of less than 0.3 parts per 100 parts syndiotactic vinyl aromatic polymer, at a temperature of from 265° C. to 305° C. to produce a molded article; and heat treating the molded article at a temperature of 210° C. to 230° C. for at least 2 minutes to thermally initiate free radical polymerization of the residual monomer.

Processo para preparação de uma dispersão aquosa de polímero

Olefin polymerization processes

A process for reducing the level of hydrogen in certain polymerization effluent and recycle streams containing unreacted propylene monomers and hydrogen by contacting the streams with a hydrogenation catalyst so as to convert at least part of the propylene to the corresponding alkane. The process is particularly applicable to the effluent from a slurry polymerization reactor which has been used to produce a polypropylene homopolymer or copolymer having a first molecular weight and at least part of the effluent is to be supplied to a slurry polymerization reactor to produce a polypropylene homopolymer or copolymer having a second, higher molecular weight.

Method for reducing the content of residual monomers in aqueous polymer dispersions

The invention relates to a method for effectively reducing the quantity of residual monomers in an aqueous polymer dispersion by secondary treatment of the dispersion optionally under pressure with an initiator system comprised of a) one hydroperoxide, hydrogen peroxide or one peracid and b) one α-hydroxycarboxylic acid such as tartaric acid or one salt therefrom.

Process for reducing the residual styrene level of a polystyrene latex

Process for the preparation of an aqueous polymer dispersion

In this process for preparing an aqueous polymer dispersion, an aqueous dispersion of a polymer that contains at least one chemically bound monomer having at least one ethylenically unsaturated group is prepared in a manner known per se, so that the total content of free, i.e. non chemically bound, monomers that contain at least one ethylenically unsaturated double bond, in the thus prepared aqueous polymer dispersion, lies in a range from > 0 to </= 1 % by weight, with respect to the polymer content of the aqueous polymer dispersion. This residual monomer content is then reduced by means of a radical redox initiator system that includes at least one oxidising agent and at least one reducing agent. The redox initiator system contains as reducing agent a mercaptane with at least one other functional group besides the mercaptane group.

Reducing residual monomer content in aqueous polymer dispersion

The residual monomer content of aqueous polymer dispersions is reduced by further treatment with an initiator system containing a peroxide, a saturated alpha - hydroxycarboxylic acid and, optionally, multivalent ions of a variable-valency metal. A method for reducing the residual monomer content in aqueous polymer dispersions comprises post-treatment by addition of an initiator system essentially containing: (a) 0.01-5 wt% (based on total amount of monomers used to make the dispersion) of a compound of formula: R<1>-O-O-R<2> (a1), and/or a compound which liberates hydrogen peroxide (H2O2) in aqueous medium (a2); (b) 0.01-30 wt% alpha -hydroxy- carboxylic acid with no polymerisable carbon-carbon double bonds or a salt thereof; and (c) 0-1000 ppm multivalent metal ions of variable valency. R<1> and R<2> = H, 1-8 C alkyl or 6-12 C aryl, at least one of these groups being H;

Process for reducing odor emissions in aqueous polymer dispersions and in polymer powders

Gegenstand der Erfindung ist ein Verfahren zur Verringerung der Geruchsemission in wässrigen Polymerdispersionen und in Polymerpulvern, wobei zu einer wässrigen Dispersion eines durch radikalische Polymerisation von einem oder mehreren ethylenisch ungesättigten Monomeren zugänglichen Polymers nach Abschluß der Polymerisation DOLLAR A a) ein oder mehrere wasserlösliche Verbindungen aus der Gruppe umfassend Metallsalze von Kupfer-(II), Silber, Aluminium, Zink, Eisen-(III), sowie Kaliumpermanganat und Imidazolin sowie Imidazolinderivate, gegebenenfalls in Kombination mit DOLLAR A b) einem oder mehreren wasserlöslichen Reduktionsmitteln aus der Gruppe umfassend Ascorbinsäure, Iso-Ascorbinsäure, Eisen-(II)-Salze, Zink- oder Alkaliformaldehydsulfoxylate zugegeben werden, DOLLAR A und gegebenenfalls die so behandelte wässrige Polymerdispersion zu einem Polymerpulver getrocknet wird, wobei wasserlöslich eine Löslichkeit in Wasser von >= 1 g/1 bei Normalbedingungen (Normklima 23/50, DIN 50014) bedeutet. The invention relates to a process for reducing the odor emission in aqueous polymer dispersions and in polymer powders, in which an aqueous dispersion of a polymer accessible by radical polymerization of one or more ethylenically unsaturated monomers after completion of the polymerization DOLLAR A a) one or more water-soluble compounds from the Group comprising metal salts of copper (II), silver, aluminum, zinc, iron (III), and potassium permanganate and imidazoline and imidazoline derivatives, optionally in combination with DOLLAR A b) one or more water-soluble reducing agents from the group comprising ascorbic acid, iso- Ascorbic acid, iron (II) salts, zinc or alkali formaldehyde sulfoxylates are added, DOLLAR A and, if appropriate, the aqueous polymer dispersion treated in this way are dried to a polymer powder, water-soluble solubility in water of> = 1 g / 1 under normal conditions (standard climate 23 / 50 DIN 50014) means.

Reducing the monomer content in expandable thermoplastic beads

The invention relates to a process for reducing the monomer content in expandable thermoplastic beads which are produced by polymerizing an ethylenically unsaturated monomer or a mixture of such monomers in aqueous suspension in the presence of a blowing agent. The residual monomers in both the beads and the process water are reduced by treatment of the slurry of beads and water obtained after polymerization in a vessel at a temperature above 65° C. in the presence of at least one water-soluble initiator. In order to avoid the expansion of the beads during the course of monomer reduction the vessel is kept completely filled with a liquid, preferably water, during the temperature treatment.

EMISSIONS OF DISPERSION PAINT, PAINT PAINT, AND PLASTIC DISPERSION SPOUSE, AND METHOD OF MANUFACTURING THEM

METHOD FOR PRODUCING POLYMERIZES FROM OLEFINICALLY UNSATURATED MONOMERS

METHOD FOR REDUCING THE RESIDUAL MONOMER CONTENT IN AQUEOUS PLASTIC DISPERSIONS BASED ON POLYVINYL ESTER

중합체 수분산액의 제조 방법(Method of Producing an Aqueous Polymer Dispersion)

중합체 수분산액은 환원제로서 저급 케톤 및 비술파이트의 부가물을 함유하는 유리 라디칼 레독스 개시제계를 사용하여 후중합을 수행하는 방법으로 제조한다.

Preparation of an aqueous polymer dispersion

聚合物水分散液的制备

一种聚合物水分散液用这样一种方法制备，其中用含有低碳酮与亚硫酸氢盐的加成物作为还原剂的自由基氧化还原引发剂体系来进行后聚合。

LOW VOC EMULSION

Method for reducing the content of residual monomers in aqueous polymer dispersions

Menetelmä vettä sisältävän polymeeridispersion valmistamiseksi

Process for reducing the residual monomer content in aqueous plastics dispersions based on polyvinyl ester

Coating finish method of car's loop fabrics weaved polyester dope dyed yarn

본 발명은 폴리에스터 원사로 직성한 차량용 루프 포지의 코팅가공방법에 관한 것으로, 폴리에스터 원착사(Dope dyed yarn)를 원사로 사용하여 제직한 포지에브롬계 방염제가 전체 조성물의 40-80중량부, 클로로화합물 10-35중량부, 염화파라핀 10-25중량부로 구성된 방염수지를 사용하여 두께 0.5-2.5 로 1차 나이프 코팅하고 100-140 에서 30-120초간 건조시킨 다음 그위에 다시 방염수지를 두께 1.0-3.3 로 도포하여 2차 나이프 코팅함을 특징으로 하며 이와 같이 하여 얻은 방염포지는 경량성이 부여될 뿐 아니라 방염성이 우수하고 피코팅재와 기포간의 접착력이 우수하며 세탁 견뢰도가 뛰어나고 방수성, 발수성이 뛰어나 우천시에도 가벼워서 운반이 용이한 효과를 가진다. The present invention relates to a coating process for a vehicle roof forge woven with polyester yarn, wherein the forge bromine flame retardant woven using polyester dyed yarn is 40-80 parts by weight of the total composition. , 0.5-2.5 thick using flame retardant resin consisting of 10-35 parts by weight of chloro compound and 10-25 parts by weight of paraffin chloride 1st Knife Coated with 100-140 Dry for 30-120 seconds and then put the flame retardant resin on it again 1.0-3.3 It is characterized by coating with a second knife and the flame retardant foam obtained in this way is not only imparted with light weight, but also excellent in flame retardancy, excellent adhesion between the coating material and bubbles, excellent washing fastness, waterproof and water repellency, even in rainy weather. It is light and has an easy carrying effect.

METHOD FOR TREATING (CO) POLYMERISATS FOR REMOVING REMAINING MONOMERS

Handle the method for polymkeric substance

减少水溶性或水溶胀性聚合物中未反应单体的方法，该方法包含下列步骤：i)在聚合物表面涂布紫外引发剂和ii)用紫外光辐照该聚合物，其中紫外引发剂被溶解或分散在内含有机化合物的液体介质内。该方法适用于减少聚丙烯酰胺中未反应丙烯酰胺的量。同时要求包含下列组分的液态引发剂组合物的权利：i)紫外引发剂，和ii)包含有机化合物的液体介质。该引发剂体系适用于涂布聚合物如聚丙烯酰胺的表面，以除去未反应单体如丙烯酰胺。

Waterrreducing resin composition

Preparation of waterrreducting resin composition

Preparation method of cured carbon felt

本发明公开了一种固化碳毡，其原料组分按重量份比包括：主料：去离子水50‑100份、石墨粉20‑40份、固化剂10‑20份、聚氯乙烯树脂10‑20份；辅料：润滑剂10‑20份、抗氧剂25‑45份、稀释剂10‑20份、无机填料5‑10份、无水乙醇30‑50份、丙酮10‑30份，本发明涉及固化碳毡技术领域。该固化碳毡的制备方法，使得固化碳毡的个体性能得到显著提升，并且在制作时，通过对物料的混合直接生成需要的溶液，避免了复杂的溶液混合操作，提高了生产效率，通过辅料中的抗氧剂、无水乙醇和丙酮的联合设置，使得固化碳毡在浸泡时的吸收能力得到提升，有效的缩短了浸泡时间，并且通过无机填料和润滑剂的配合，能够有效的提高固化碳毡后期的隔热能力，并且方便工作人员识别操作。

Polyvinyl chloride coating yarn

A poly vinyl chloride coating yarn is provided to maximize the durability and intensity of products and to have the excellent quality, thereby enhancing the reliability. PVC materials and original materials for colors, flame-proof and smoking-proof are injected into a hopper. The original matters are mixed at the high temperature. The mixed PVC is coated at the moment that the core is emerged from a nozzle hole of a nozzle and then injected into a cistern. After the aging process is performed during the constant time, the mixed PVC is wound so that the PVC coating yarn is formed. Polyester mono fiber(101) forms a core and the PVC is coated(102) at the outside of the core so that the PVC coating yarn(100) is formed.

Process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water-absorbent crosslinked polymer foams and use thereof

本发明涉及一种减少由含有来源于单烯属不饱和酸的单元的吸水性交联聚合物泡沫塑料形成的制品的残留单体含量和提高其湿强度的方法，该方法包括用至少0.5重量%的含有伯和/或仲氨基和具有至少300的摩尔质量的聚合物处理成型制品，本发明还涉及这样获得的成型泡沫制品以及湿强度增强的成型泡沫制品在卫生制品中的应用。

Process for the reduction of the residual monomer content of water-absorbent foam

A process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water absorbent crosslinked polymer foams containing units derived from monoethylenically unsaturated acids, which comprises treating the formed articles with at least 0.5% by weight of a polymer containing primary and/or secondary amino groups and having a molar mass of at least 300, the formed foam articles thus obtainable and use of the wet strength enhanced formed foam articles in hygiene articles.

Method for producing water-soluble or water-swellable polymerizates with a very low residual monomer content, products produced according to this method and the use thereof

본 발명은 질소 화합물로 일부 또는 완전히 중화되고, 극소량 수준의 잔류 단량체를 갖는 아크릴산 및/또는 아크릴산 유도체로부터 수용성 또는 수팽창성 중합체 생성물 제조 방법에 관한 것이며, 이 방법은 이후 120 내지 240℃의 온도에서 중합체 생성물을 가열시키는 것을 특징으로 한다. 이에 따라 제조된 중합체는 응결제, 분산제 및 흡수제로 사용되는 것이 적합하다. The present invention relates to a process for preparing a water-soluble or water-expandable polymer product from acrylic acid and / or acrylic acid derivatives which are partially or completely neutralized with nitrogen compounds and having trace levels of residual monomers, which are then polymers at temperatures of 120 to 240 ° C. It is characterized by heating the product. The polymers thus prepared are suitably used as coagulants, dispersants and absorbents.

Process for the preparation of water-soluble or water-swellable polymers with a very low residual monomer content, products produced thereafter and their use

Process for the production of synthetic polymers with a very low residual monomer content, products produced thereafter and their use

Method for producing synthetic polymerizates with a very low residual monomer content, products produced according to this method and the use thereof

The invention relates to a process for producing water-soluble or water-swellable polymer products with low levels of residual monomers using acrylic acid and/or acrylic acid derivatives, which process is characterized by adding a nitrogen compound to the monomer solution to be polymerized and subsequent heating of the polymer product at temperatures of from 120 to 240° C. The polymers produced accordingly are suitable for use as flocculants, dispersants and absorbents.

Water-absorbing resin prepn. - by irradiating polymer of water-soluble monomer and polysaccharide and/or crosslinking agent with UV in presence of radical scavenger

Prepn. of water-absorbing resins (I) with reduced content of residual monomer and water-soluble components comprises irradiating (I) obtd. by polymerisation of a water-soluble monomer with a polysaccharide and/or crosslinking agent, with uv-radiation in the presence of a radical scavenger in every drying or pulverising stage after polymerisation. Also claimed are (I) comprising 500 ppm or less, residual monomer and 7 wt. % or less water-soluble components. The amt. of radical scavengers used is 0.001-5% of the total wt. of polymerisable monomer and crosslinking agent. ADVANTAGE - (I) contain reduced amts. of residual monomer and water-soluble components. (9pp Dwg.No.0/0)

Continuous production process for water-absorbent resin

Water-in-oil polymer dispersions with improved environmental compatibility

The invention relates to water-in-oil polymer dispersions consisting of a continuous organic phase and water-soluble polymers finely distributed therein, wherein said polymers have a radical monomer content of less than 1,000 ppm. The invention also relates to a method for producing the inventive polymer dispersions and to their use as flocculation auxiliary agents, thickening agents and as additives for phytosanitary and anti-erosion agents.

Method for producing synthetic polymerizates with a very low residual monomer content, products produced according to this method and the use thereof

The invention relates to a method for producing water-soluble or water-swellable polymerizates with a low residual monomer content from acrylic acid and/or acrylic acid derivatives. The method is characterised by the addition of a nitrogen compound to the monomer solution to be polymerised and in that the polymerizate is subsequently heated at temperatures of 120 to 240 °C. The polymerizates produced according to the inventive method are suitable for use as e.g. flocculants, dispersants and absorbers.

Method for producing water-soluble or water-swellable polymerizates with a very low residual monomer content, products produced according to this method and the use thereof

The invention relates to a method for producing water-soluble or water-swellable polymerizates with a very low residual monomer content using acrylic acid and/or acrylic acid derivatives which have been partially or completely neutralised with nitrogen compounds. The method is characterised in that the polymerizate is subsequently heated to temperatures of 120 to 240 °C. The polymerizates produced according to the inventive method are suitable for use as e.g. flocculants, dispersants and absorbers.

Method for producing water-soluble or water-swellable polymerizates with a very low residual monomer content, products produced according to this method and the use thereof

The invention relates to a process for producing water-soluble or water-swellable polymer products from acrylic acid and/or acrylic acid derivatives partially or completely neutralized with nitrogen compounds and with exceedingly low levels of residual monomers, which process is characterized by subsequent heating of the polymer product at temperatures of from 120 to 240° C. The polymers produced accordingly are suitable for use as flocculants, dispersants and absorbers.

Method for producing water-soluble or water-swellable polymerizates with a very low residual monomer content, products produced according to this method and the use thereof

Method for producing synthetic polymerizates with a very low residual monomer content, products produced according to this method and the use thereof

Method for producing water-soluble or water-swellable polymerizates with a low content of residual monomers

1. A process for producing water-soluble or water-swellable synthetic polymer products by free-radical polymerization in aqueous solution of acrylic acid and/or acrylic acid derivatives partially or completely neutralized with basic nitrogen compounds, characterized in that achieved polymer product is heated at a temperature of from 120 to 240 degree C, as the result exceedingly low residual monomer levels are achieved. 2. The process according to Claim 1, characterized in that ammonia, ammonium hydroxide, hydroxylamine, alkanolamines, or alkylamines and/or mixtures thereof are used as nitrogen compound. 3. The process according to Claims 1 and 2, characterized in that ammonia, ammonium hydroxide, mono- or diethanolamine are preferably used as nitrogen compound. 4. The process according to Claims 1 to 3, characterized in that the acid groups of the monomer components are neutralized with said nitrogen compound up to a neutralization level of from 10 to 100%. 5. The process according to Claims 1 to 4, characterized in that as initial monomers acrylic acid, methacrylic acid or derivatives of these carboxylic acids, acrylamidopropanesulfonic acid, alkali or ammonium salts of these carboxylic acids, acryl- or methacrylamide and derivatives thereof, vinylpyrrolidone, and mixtures thereof are used with partially water-soluble monomers such as vinylacetate. 6. The process according to Claims 1 to 5, characterized in that at least one crosslinker based on a bi- or polyfunctional monomer is used in addition. 7. The process according to Claims 1 to 6, characterized in that the polymer product is heated at a temperature of from 140 to 180 degree C. 8. The process according to Claims 1 to 7, characterized in that polymer products having a content of residual monomer of less than 50 ppm, preferably less than 30 ppm are formed. 9. The process according to Claims 1 to 8, characterized in that polymer products having a residual content of acrylamide of less than 10 ppm are formed.

Method for producing synthetic polymerizates with very low residual monomer content

The invention relates to a method for producing water-soluble or water-swellable polymerizates with a low residual monomer content from acrylic acid and/or acrylic acid derivatives. The method is characterized by the addition of a nitrogen compound to the monomer solution to be polymerized, an in that the polymerizate is subsequently heated at temperature of 120 to 240° C. The polymerizates produced according to the inventive method are suitable as flocculants, dispersants and absorbers.

Removal of volatile substances from thermoplastic resins

A thermoplastic resin such as a styrene/maleic anhydride copolymer is treated to remove volatile impurities such as unreacted styrene by admixing with a chemical blowing agent and extruding under a vacuum. The chemical blowing agent is converted into an inert gas such as carbon dioxide during extrusion; the gas evolved is removed, together with the volatile impurities, through one or more vents in the extruder. The use of a chemical blowing agent, rather than the inert gas itself, permits the facile distribution of the CO 2 stripping agent throughout the molten thermoplastic resin using commonly available extruders without the need for elaborate gas injection means.

PROCESS FOR THE ENZYMATIC TREATMENT OF WATER-IN-OIL EMULSIONS OF ACRYLAMIDE POLYMERS TO REDUCE THE RESIDUAL MONOMER CONTENT

CE PROCEDE CONSISTE A AJOUTER AUX EMULSIONS DE POLYMERES D'ACRYLAMIDE DE L'AMIDASE SOUS LA FORME D'UNE EMULSION EAU-DANS-HUILE. IL A ETE TROUVE QUE L'ADDITION DE L'AMIDASE SOUS FORME D'EMULSION AU LATEX DE POLYACRYLAMIDE PROCURE DE MEILLEURS RESULTATS QUE L'ADDITION DE L'AMIDASE SOUS FORME DE SOLUTION. SI ON AJOUTE UNE SOLUTION D'AMIDASE A UN LATEX DE POLYACRYLAMIDE, IL SE FORME, DANS LE LATEX, UNE QUANTITE APPRECIABLE DE PARTICULES DE GEL INDESIRABLES.

Process for deodorizing acrylic polymerizates

Flame retardant finish method of polyester tent fabric

본 발명은 방염성이 우수한 폴리에스터 천막지의 방염가공 방법에 관한 것으로 폴리에스터 원착사(Dope dyed yarn)를 원사로 사용하여 제직한 포지에 브롬계 방염제가 전체 조성물의 15 40중량부, 클로로화합물 5 10중량부, 물 50 80중량부로 구성된 방염수지에 침지하여 방염수지를 충분히 함침시킨 다음 망글 압력 2.0 4.0톤으로 하여 스퀴즈하고 건조기에서 90 120 의 온도하에서 30 120초간 건조시킨 다음 나이프로 1 3 두께로 도포하고 다시 110 150 에서 30 120초간 건조시킨 다음 40 80 , 압력 2.0 5.0톤으로 카렌더 처리함을 특징으로 하며 이와같이 하여 얻은 방염포지는 경량성이 부여될 뿐 아니라 방염성이 우수하고 피코팅재와 기포간의 접착력이 우수하여 세탁 견뢰도가 뛰어나며 방수성, 발수성이 뛰어나 우천시에도 가벼워서 운반이 용이한 효과를 가진다. The present invention relates to a flame retardant processing method of a polyester tent paper having excellent flame retardancy, wherein a brominated flame retardant is used in a fabric woven using polyester dyed yarn as a yarn. 40 parts by weight, chloro compound 5 10 parts by weight, water 50 Immerse the flameproof resin sufficiently by immersing in the flameproof resin composed of 80 parts by weight, and then mangle pressure 2.0 Squeeze it to 4.0 ton and dry it in the dryer. 120 Under the temperature of 30 Dry for 120 seconds and then with a knife 3 Apply to thickness and back to 110 150 From 30 Dry for 120 seconds and then 40 80 Pressure 2.0 It is characterized by calendering at 5.0 ton. The flame retardant obtained in this way is not only given light weight but also excellent in flame retardancy and excellent adhesion between coated material and air bubbles. Has an easy effect.

PROCESS FOR THE ENZYMATIC TREATMENT OF WATER-IN-OIL EMULSIONS OF ACRYLAMIDE POLYMERS TO REDUCE THE RESIDUAL MONOMER CONTENT

Color stabilizers for vinyl chloride resins

The discoloration that vinyl chloride resins usually undergo when a slurry containing one of these resins is heated at a temperature above 70° C. to reduce its monomer content to less than 10 ppm is minimized or prevented by carrying out the heating step in the presence of a monomer-miscible color stabilizer that comprises an epoxide and an organic peroxide.

Method for reducing residual monomers in low viscosity polymers / polyols

Hydroxylamine coagulant for acrylonitrile removal

Process for preparing aqueous polymer dispersion

Described is a method of producing an aqueous polymer dispersion, the method calling for further polymerization of the dispersion using a radical mechanism redox initiator system including as the reducing agent the addition compound obtained between a lower ketone and hydrogen sulphite.

METHOD FOR PRODUCING MOLDED OBJECTS FROM VINYL FLAVOR RESIN.

Process for removing monomers from aqueous polymerdispersions of polyvinylesters

Preparation of an aqueous polymer dispersion

In this process for preparing an aqueous polymer dispersion, an aqueous dispersion of a polymer that contains at least one chemically bound monomer having at least one ethylenically unsaturated group is prepared in a manner known per se, so that the total content of free, i.e. non chemically bound, monomers that contain at least one ethylenically unsaturated double bond, in the thus prepared aqueous polymer dispersion, lies in a range from > 0 to 1 % by weight, with respect to the polymer content of the aqueous polymer dispersion. This residual monomer content is then reduced by means of a radical redox initiator system that includes at least one oxidising agent and at least one reducing agent. The redox initiator system contains as reducing agent a mercaptane with at least one other functional group besides the mercaptane group.

Removal of residual acrylonitrile monomer

Concentration of residual acrylonitrile monomer is reduced in acrylonitrile copolymers or water in which acrylonitrile is polymerized to a level of less than about 100 ppm by reacting therewith, alkali metal and alkaline earth metal carbonates, phosphates, and silicates.

Removal of monomer from acrylamide polymers with sulfur dioxide

RESIDUAL UNREACTED ACRYLAMIDE IS REMOVED FROM WATERSOLUBLE AND WATER-SWELLABLE POLYMERS AND COPOLYMERS OF ACRYLAMIDE BY TREATING THE POLYMER WITH AT LEAST ONE MOLE OF SULFUR DIOXIDE PER MOLE OF RESIDUAL MONOMER. POLYMERS CONTAINING TEN PARTS PER MILLION OR LESS OF MONOMER ARE THEREBY OBTAINABLE.

Process for removing monomers from aqueous polymerdispersions of polyvinylesters

The preparation of aqueous polymer dispersions containing vinyl ester polymers or vinyl ester copolymers and having reduced contents of undesired residual monomeric vinyl esters present as a consequence of the preparation and possibly of undesired acetaldehyde from corresponding starting dispersions, as are obtainable by conventional polymerisation or copolymerisation methods from ethylenically unsaturated monomers, by selective alkaline saponification (hydrolysis) of the residual monomeric vinyl esters which can be saponified under alkaline conditions, and, if appropriate, oxidation of the acetaldehyde to acetic acid in the aqueous dispersions. The use of the polymer dispersions as binders in low-emission or emission-free aqueous preparations, for example for paint coats, coatings, plaster, adhesives, paper sizes, fibre nonwoven binders, textile assistants, etc., in particular indoor applications or applications in closed spaces.

Method for reducing the quantity of residual monomers in aqueous polymeric dispersions

A process for reducing the amount of residual monomer in aqueous polymer dispersions operates by aftertreatment with an initiator system essentially comprising a) from 0.001 to 5% by weight, based on the total monomer amount used to prepare the polymer dispersion, a 1 ) of an oxidizing agent R 1 OOH,  where R 1 is hydrogen or a C 1 -C 8 -alkyl or a C 6 -C 12 -aryl group, and/or a 2 ) of a compound which in aqueous medium releases hydrogen peroxide, and b) from 0.005 to 5% by weight, based on the total monomer amount used to prepare the polymer dispersion, of a reducing agent prepared from b 1 ) an aldehyde R 2 CH═O,  where R 2 is a C 1 -C 12 -alkyl group which may contain functional groups and/or may be olefinically unsaturated, and b 2 ) an inorganic dithionite, and c) catalytic amounts of a polyvalent metal ion which is able to exist in a plurality of valence states.

Process for preparing an aqueous polymer dispersion

SET TO REDUCE MONOMER CONTENT IN EXPANDABLE TERMOPLASTES

Method for reducing the amount of residual monomer in aqueous polymer dispersion

(57)【要約】 本発明は、開始剤系を使用した後処理により、水性ポリマー分散液中の残存モノマーの量を低下させる方法に関し、該開始剤が、実質的に、ａ）ポリマー分散液の製造に使用される全モノマー量に対して、ａ1）酸化剤 Ｒ １ ＯＯＨ[式中、Ｒ １ は水素またはＣ １ 〜Ｃ ８ −アルキルまたはＣ ６ 〜Ｃ １２ −アリール基である]および／またはａ2）水性媒体中で過酸化水素を放出する化合物を０.００１〜５質量％、およびｂ）ポリマー分散液の製造に使用される全モノマー量に対して、ｂ1）アルデヒド Ｒ ２ ＣＨ＝Ｏ[式中、Ｒ ２ は、官能基を有しかつ／またはオレフィン不飽和であってよいＣ １ 〜Ｃ １２ −アルキル基である]およびｂ2）無機亜ジオチン酸塩から製造される還元剤０.００５〜５質量％、ならびにｃ）大多数の平衡状態において存在できる触媒量の多価金属を含有する。

A process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water absorbent crosslinked polymer foams and use thereof

A process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water absorbent crosslinked polymer foams containing units derived from monoethylenically unsaturated acids, which comprises treating the formed articles with at least 0.5% by weight of a polymer containing primary and/or secondary amino groups and having a molar mass of at least 300, the formed foam articles thus obtainable and use of the wet strength enhanced formed foam articles in hygiene articles.

Method of reducing residual monomers in the preparation of bead polymers

Process for the preparation of synthetic polymers with a very low residual monomer content

Preparation of polymers from olefinically unsaturated monomers

Polymers are prepared from olefinically unsaturated monomers in an aqueous medium using a free radical initiator system which is soluble in this medium and consists of an oxidizing agent, a reducing agent and an iron salt, by a process in which a corresponding redox initiator system which contains a vanadium salt is used in addition to this iron-containing redox initiator system, and the content of olefinically unsaturated residual monomers in aqueous polymer mixtures or solutions is reduced by this process.

Process for production of chlorinated ethylene-propylene copolymers

Process for the removal of free acrylate monomer from polyacrylate compositions by the addition of alkanolamines

A process is provided for reduction in the amount of free acrylate monomer from compositions consisting of or containing polyacrylate. The process involves addition to the composition of an alkanolamine or an alkanediolamine, preferably one of the ethanolamines, which scavenges the free acrylate monomer present into an inert form.

Polyacrylamide particles

WATER-IN-OIL EMULSES, AND PROCEDURE FOR REDUCING ACRYLAMIDE CONTENT IN SUCH.

Removal of acrylonitrile from latex with oximes

ABSTRACT OF THE DISCLOSURE Acrylonitrile is a monomer that is widely used in the synthesis of a vast variety of polymers. Undesirable quantities of unpolymerized residual acrylonitrile are often present in these acrylonitrile polymers. This residual or free acrylonitrile dissolved in an acrylo-nitrlle polymer and/or its emulsifier system and the water phase used in its polymerization can be reduced signifi-cantly in concentration by treatment with oximes. Oximes react with acrylonitrile by an oxygen-cyanoethylation react which results in the formation of a cyanoethyl oximino ether linkage.

Method for the manufacture of pressure sensitive adhesives

A method for the manufacture of an adhesive id described, comprising: (A) Providing an initial reaction product of a solution polymerization reaction, the initial reaction product comprising polymer, unreacted polymerizable reactant, non-polymerizable material, and solvent; and (B) Purifying the initial reaction product by adding an oxidizing agent and a reducing agent to the initial reaction product and allowing the unreacted polymerizable reactant in the initial reaction product to further react, thereby providing a second reaction product comprising additional polymer and a lower level of unreacted polymerizable reactant than was present in the initial reaction product. Optionally, the method of the invention may further comprise: Precipitating the polymer from the second reaction product to provide a precipitated polymer; and separating the precipitated polymer from the remainder of the second reaction product, the precipitated polymer comprising a lower level of non-polymerizable material or unreacted polymerizable reactant or both non-polymerizable material and unreacted polymerizable reactant than was present in the second reaction product.

Method for reducing the quantity of residual monomers in aqueous polymeric dispersions

Treating dispersions of acrylonitrile polymers

ABSTRACT OF THE INVENTION Residual acrylonitrile dissolved in acrylo-nitrile copolymers and/or water in which acrylonitrile polymers are polymerized or processed such as a latex thereof or from acrylonitrile processes can be substan-tially reduced by adding to polymer-water mixtures for example, after at least 90% of the monomers have been polymerized, additional catalyst and an amount of comonomer in excess of the amount of free acrylonitrile present.

Treatment of vinyl halide polymers

Vinyl halide monomer content of vinyl halide polymer is reduced by subjecting the polymer to radio frequency dielectric heating in the presence of added polymerization initiator.

METHOD FOR REDUCING THE QUANTITY OF RESIDUAL MONOMERS IN AQUEOUS POLYMER DISPERSIONS

Treatment of (Co)polymers to remove residual monomers

(Co)polymers which are composed of one or more monomers from the group comprising (a) the vinyl-aromatic monomers and (b) the ethylenically unsaturated monomers and furthermore contain one or more monomer components (a) or (b), or (a) and (b), as unreacted residual monomers are treated at above the glass temperature of the (co)polymer and in the presence of one or more assistants, which have been added to the (co)polymer. The assistant used is a bicyclic compound of the general formula I ##STR1## where X is a methylene, ethylene, 1,1-ethenyl, 1,2-ethenyl, carbonyl, azo, amino, ether or thioether group which is unsubstituted or substituted by halogen, alkyl, alkenyl, cycloalkyl, aryl, carboxyl, carboxyalkyl, an ether group or a thioether group, R 1 , R 2 , R 3 and R 4 are each hydrogen, halogen, alkyl, alkenyl, cycloalkyl, aryl, carboxyalkyl or nitrile, R 5 and R 6 are each hydrogen, halogen, alkyl or carboxyalkyl, and R 7 and R 8 are each hydrogen, halogen, alkyl, alkenyl, aryl, carboxyalkyl, carboxyl or nitrile.

Method for reducing the quantity of residual monomers in aqueous polymeric dispersions

The invention relates to a method for reducing the quantity of residual monomers in aqueous polymeric dispersions by aftertreatment with an initiator system essentially comprising: a) 0.001 to 5 % by weight, in relation to the overall amount of monomers used for the production of the polymeric dispersion, of a1) an oxidant R1OOH, wherein R1 represents hydrogen, a C¿1?- to C8-alkyl group or a C6- to C12-aryl group and/or a2) a compound releasing hydrogen peroxide in an aqueous medium and b) 0.005 to 5 % by weight of a reducing agent, in relation to the overall amount of monomers used in the production of the polymeric dispersion, produced from b1) an aldehyde R?2¿CH=O, wherein R2 represents a C¿1?- to C12-alkyl group, containing functional groups and/or may be olefinically unsaturated and b2) an inorganic dithionite and c) catalytic portions of a multivalent metal ion that can be present in several valence states.

Coated articles comprising synthetic linear polyesters

689,841. Coated fabrics &c. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Jan. 19, 1951. [Jan. 20, 1950] No. 1555/50. Class 140. [Also in Group IX] Articles comprising a synthetic linear polyester obtainable from a glycol of the formula HO(CH 2 )x OH, wherein x=2 - 10, and terephthalic acid in admixture with one or more different dicarboxylic acids or not, have a continuous adherent coating of polyvinyl chloride together with a softening or plasticizing agent. The articles may be threads, yarns, cords, ribbons, textile fabrics, monofils and films. Coating may be effected by extrusion at say 160‹ or 170‹C. Tricresyl phosphate and polyprolylene adipate are specified as plasticizers for the polyvinyl chloride. Specification 599,097, [Group IX], is referred to.

Manufacturing method of aqueous dispersion

Polymerization of n-vinyl lactams

Water-in-oil type polymer dispersions with elevated environmental safety

FIELD: polymer materials. SUBSTANCE: invention relates to water-in-oil type dispersions useful as flocculants, thickeners, and additives for plant protection and erosion-preventive agents. Dispersion is composed of continuous essentially water-immiscible organic phase, water-soluble polymerizates finely distributed therein, and, optionally, adjuvants. Amount of organic phase is 20 to 80% by weight and it contains organic acid esters either as they are or in combination with a hydrocarbon or with hydrocarbon mixture, whereas level of residual monomers in dispersion is below 1000 ppm. Dispersion is preferably prepared via emulsion polymerization in reverse water-in-oil systems, wherein residual polymer destroyer is added after the end of polymerization process. EFFECT: improved environmental safety of products. 17 cl, 1 tbl, 11 ex

Process for reducing residual monomers in low viscosity polymer-polyols

An improved process is provided for preparing stable low viscosity polymer-polyols containing less than about 100 ppm residual monomers by using a monoperoxycarbonate initiator in combination with at least one initiator selected from diperoxyketals and peroxyesters, as chaser catalysts, at or near the end of the polymerization. The polymer-polyols prepared by the instant invention can be used to prepare high resiliency (load bearing) polyurethane foams.

Method for the reduction of the residual monomer content in aqueous polymer dispersions

Disclosed is a method for reducing the residual monomer content in aqueous polymer dispersions by means of an aftertreatment with an initiator system. Said method is characterized in that the aftertreatment of the aqueous polymer dispersion is carried out by adding an initiator system essentially comprising a) 0.001 to 5 percent by weight of an inorganic salt of persulfuric acid, b) 0.005 to 5 percent by weight of a methyl ketone, the percentages being relative to the total monomer content used for producing the polymer dispersion, and c) optional catalytic quantities of a metal ion that can be provided in several valence stages.

PROCESS FOR THE PREPARATION OF SCATTERING INKS, PAINT INKS AND MORTARS OF POOR PLASTIC DISPERSES IN VOLLEY EMISSIONS

PROCEDURE TO REDUCE THE AMOUNT OF RESIDUAL MONOMERS IN THE WATERPROOF DISPERSIONS OF POLYMERS.

Procedimiento para reducir las cantidades residuales de monómeros en dispersiones acuosas de polímeros mediante tratamiento final con un sistema iniciador, caracterizado porque el tratamiento final se lleva a cabo en la dispersión acuosa de polímero mediante la adición de un sistema iniciador, que comprende esencialmente a) desde un 0, 001 hasta un 5 % en peso, referido a la cantidad total de monómeros, empleada para la obtención de la dispersión de polímero, a1) de un agente oxidante R1OOH, donde R1 significa hidrógeno, un grupo alquilo con 1 hasta 8 átomos de carbono o un grupo arilo con 6 hasta 12 átomos de carbono, y/o a2) un compuesto que libere peróxido de hidrógeno en medio acuoso, y b) desde un 0, 005 hasta un 5 % en peso, referido a la cantidad total de los monómeros, empleada para la obtención de la dispersión de polímero, de un agente reductor, preparado a partir de b1) un aldehído R2CH=O, donde R2 significa un grupo alquilo con 1 hasta 12 átomos de carbono, que contenga grupos funcionales y/o que puede estar olefínicamente insaturado, y b2) un ditionito inorgánico y c) cantidades catalíticas de un ión metálico polivalente, que pueda presentarse con varios niveles de valencia. Method for reducing residual amounts of monomers in aqueous dispersions of polymers by final treatment with an initiator system, characterized in that the final treatment is carried out in the aqueous dispersion of polymer by the addition of an initiator system, which essentially comprises a) from 0.001 to 5% by weight, based on the total amount of monomers, used to obtain the polymer dispersion, a1) of an oxidizing agent R1OOH, where R1 means hydrogen, an alkyl group with 1 to 8 atoms carbon or an aryl group with 6 to 12 carbon atoms, and / or a2) a compound that releases hydrogen peroxide in aqueous medium, and b) from 0.005 to 5% by weight, based on the total amount of the monomers, used to obtain the polymer dispersion, of a reducing agent, prepared from b1) an aldehyde R2CH = O ...

Method for producing synthetic polymerizates with a very low residual monomer content, products produced according to this method and the use thereof

The invention relates to a method for producing water-soluble or water-swellable polymerizates with a low residual monomer content from acrylic acid and/or acrylic acid derivatives. The method is characterised by the addition of a nitrogen compound to the monomer solution to be polymerised and in that the polymerizate is subsequently heated at temperatures of 120 to 240 °C. The polymerizates produced according to the inventive method are suitable for use as e.g. flocculants, dispersants and absorbers.

Removal of acrylonitrile from latex with oximes

A process for producing polyacrylates having a low content of residual acrylate monomers

The present invention relates to a process for producing a polyacrylate resin having a residual acrylate monomer content of <0.1% by weight, based on resin solids, by preparing an initial polyacrylate resin and subsequently polymerizing this initial polyacrylate resin in the presence of a monomer having a low vapor pressure, such as maleic anhydride, and a peroxide initiator to reduce the monomer content.

Low emission emulsion paints, coatings and latex-based plasters, and method for their manufacture

Manufacture of low-emission polymer emulsion paints, coatings and plasters in the form of aqueous preparations based on aqueous dispersions of copolymers of olefinically unsaturated monomers wherein the pigment volume concentration (PVC) is not less than 60% and which contain water, fillers, pigments, emulsion copolymers and customary assistants, the emulsion copolymers containing from 0.05 to 2% by weight of monomer units from specific unsaturated hydrolysable organic silicon compounds and the aqueous copolymer dispersions having a minimum film-forming temperature (MFFT) of <10 DEG C, preferably <5 DEG C, in particular <2 DEG C. The aqueous preparations according to the invention contain <0.1% by weight of non-aqueous volatiles, based on the total non-volatile content of the preparations, and the pH of the aqueous preparations is within the range from 5.5 to 10. The low-emission aqueous preparations manufactured according to the invention are in particular free of volatile organic solvents, volatile organic film-forming aids, low molecular weight plasticisers, residual monomers from the emulsion copolymerisation, other, non- aqueous volatiles and malodorous by-products. Use of the emulsion-based paints, coatings and plasters as preservatives for structures and buildings or as building materials, in particular in inadequately ventilated and in inhabited rooms.