Abstract: The present invention provides an aqueous gel comprising a polymer of (meth)acrylamide or particular (meth)acrylamide derivative(s), particulate metal oxide(s) and an aqueous medium, a process for producing said gel, and products utilizing said gel.This aqueous gel can be produced so as to have transparency, has fire resistance and can prevent the spreading of flames, and is highly elastic. The aqueous gel, when produced as a transparent gel, becomes cloudy when heated or cooled and is useful for the shielding of heat rays or cold radiation.

Abstract: An improved process for the preparing a dispersions of water soluble cationic polymers in an aqueous salt solution is disclosed. The improvement comprises using as a polymeric dispersion stabilizer a water soluble hydrophobically associating copolymer of diallyldimethylammonium chloride and a monomer selected from the group consisting of: ##STR1## and alkyl esters of acrylic acid, where R.sub.1 is either hydrogen or CH.sub.3 ; R.sub.2 and R.sub.3 are each an alkyl group having 1 to 3 carbon atoms; A.sub.1 is either an oxygen atom or NH; B.sub.1 is either an alkylene group having 2 to 4 carbon atoms or a hydroxypropylene group, Q is benzyl, or C.sub.6 -C.sub.20 alkyl, and X.sub.1.sup.- is an anionic counterion.

Abstract: This invention pertains to aqueous emulsions containing water insoluble, vinyl polymer particles containing polymerized N-vinyl formamide (NVF) units converted to water insoluble vinyl acetate polymers containing cationic, amine functional units. These latex dispersions are prepared by the emulsion polymerization of an ethylenically unsaturated monomer and N-vinyl formamide. Preferably, vinyl acetate, optionally with other ethylenically unsaturated monomers, are used to form the copolymer. The copolymer then is selectively hydrolyzed via acid hydrolysis of the N-vinyl formamide group to form water insoluble polymer particles.

Abstract: A composition comprising a blend of an inverse emulsion of a hydroxamated polymer and a second inverse emulsion of a second polymer selected from the group consisting of alkali metal (meth)acrylate homopolymers, ammonium (meth)acrylate homopolymers, and copolymers of the (meth)acrylates with (alk)acrylamides, wherein the molar ratio of hydroxamated polymer to said second polymer in the emulsion is within the range of about 99:1 to 15:85 when the second polymer is an alkali metal (meth)acrylate homopolymer or copolymer and is within the range of about 99:1 to 58:42 when said second polymer is an ammonium (meth)acrylate homopolymer or copolymer. Processes for removing suspended solids from Bayer alumina process streams using these compositions are also provided.

Abstract: The present invention provides an aqueous gel comprising a polymer of (meth)acrylamide or particular (meth)acrylamide derivative(s), particulate metal oxide(s) and an aqueous medium, a process for producing said gel, and products utilizing said gel.This aqueous gel can be produced so as to have transparency, has fire resistance and can prevent the spreading of flames, and is highly elastic. The aqueous gel, when produced as a transparent gel, becomes cloudy when heated or cooled and is useful for the shielding of heat rays or cold radiation.

Abstract: A method for reducing the amount of microfoam in a spray-applied clear waterborne thermoset composition is provided, wherein the clear composition contains an emulsion-polymerized addition polymers or a multi-staged emulsion-polymerized addition polymers with an average particle diameter greater than about 120 nanometers and bearing at least two first reactive groups and a reactive modifier bearing at least two reactive groups is formed; is spray-applied to a substrate; and is cured. Also provided are substrates bearing such spray-applied clear compositions.

Abstract: An improved emulsion polymerization process utilizing at least one substantially water-insoluble ethylenically unsaturated monomer is provided for forming discrete solid polymeric particles suitable for use in coating and/or adhesive applications. During at least the initial portion of the polymerization a dissolved water-soluble polymerizable surfactant (as defined) formed by the reaction of a diallylamine, ethylene oxide, and propylene oxide and/or butylene oxide additionally is provided in the reaction zone in the continuous aqueous phase. The water-soluble polymerizable surfactant undergoes copolymerization and is substantially completely consumed during the course of the emulsion polymerization.

Abstract: An aqueous dispersed resin composition comprising (A) an aqueous dispersion of carbonyl-containing resin particles having an inner layer and an outermost layer, which is obtained by emulsion polymerization of a monomer mixture comprising (a) not less than 0.5% by weight of a carbonyl-containing monomer containing at least one aldo group or keto group and one polymerizable unsaturated double bond in the molecule thereof, (b) not less than 0.5% by weight of an ethylenically unsaturated carboxylic acid, (c) not more than 99% by weight of a monomer having a water-solubility of not more than 8 g/100 ml at 20.degree. C.

Abstract: Aqueous liquid for primers are prepared from a copolymer consisting essentially of the following components (A), (B) and (C) in aqueous medium where (A) is a cationic monomer represented by the following general formula (1) ##STR1## wherein Y is organic or inorganic monovalent anion; m is an integer 0 to 3 and n is an integer 1 to 3;(B) is an alkoxysilane monomer represented as the following general formula (2) ##STR2## (C) is an ethylenic unsaturated monomer, and wherein a structural unit derived from the (A) component accounts for not less than 5% of the copolymer, a structural unit derived from the (B) component accounts for not less than 0.5% by weight of the copolymer and a structural unit derived from the (C) component accounts for not more than 94.5% by weight of the copolymer.

Abstract: An aqueous dispersed resin composition is disclosed, comprising (A) an aqueous dispersion of carbonyl-containing resin particles having an inner layer and an outermost layer, which is obtained by emulsion polymerization of a monomer mixture comprising (a) not less than 0.5% by weight of a carbonyl-containing monomer containing at least one aldo group or keto group and one polymerizable unsaturated double bond in the molecule thereof, (b) not less than 0.5% by weight of an ethylenically unsaturated carboxylic acid, (c) not more than 99% by weight of a monomer having a water-solubility of not more than 8 g/100 ml at 20.degree. C.

Abstract: An aqueous crosslinking resin composition comprising (I) an aqueous resin dispersion obtained by emulsion polymerization of a monomer mixture consisting of (a) 2 to 50% by weight of an unsaturated carboxylic acid monomer, (b) 0.

Abstract: A method for reducing the amount of microfoam in a spray-applied clear waterborne polymeric composition is provided, wherein the clear composition contains certain emulsion-polymerized addition polymers or certain multi-staged emulsion-polymerized addition polymers is formed; is spray-applied to a substrate; and is dried. Also provided are substrates bearing such spray-applied clear compositions.

Abstract: The invention relates to aqueous contact adhesive dispersions containing, based on the total weight of the dispersion, from 40 to 70% by weight of a copolymer prepared by emulsion polymerization, where the copolymer containsa) from 40 to 70% by weight of vinyl esters of aliphatic carboxylic acids having 2 to 12 carbon atoms,b) from 10 to 40% by weight of acrylic acid esters of aliphatic alcohols having 4 to 12 carbon atoms,c) from 8 to 15% by weight of methacrylic acid esters of aliphatic alcohols having 4 to 12 carbon atoms,d) from 0.1 to 3% by weight of ethylenically unsaturated compounds which cause cross-linking,e) from 0.1 to 5% by weight of ethylenically unsaturated carboxylic acids,f) from 0.1 to 2% by weight of substituted and unsubstituted (meth)acrylamides,g) from 0.5 to 3% by weight of ethylenically unsaturated hydroxyalkyl-functional compounds, andh) from 0.5 to 3% by weight of ethylenically unsaturated sulfates and/or sulfonates.

Abstract: Aqueous polyurethane dispersions are prepared by reacting (a) dihydroxy compounds having a molecular weight of from 500 to 5,000, (b) diisocyanates and, if required, (c) chain extenders having at least two hydrogen atoms which are reactive toward isocyanate groups and a molecular weight of less than 300 in the melt or in the presence of a water-miscible, inert organic solvent (S) which boils below 100.degree. C. to give a prepolymer having terminal isocyanate groups, then reacting the prepolymer with (d) salts of aliphatic aminocarboxylic or aminosulfonic acids or tertiary ammonium salts and dispersing the resulting polyurethane in water, by a process in which, before the polyurethane obtained is dispersed in water, from 5 to 60 parts by weight, based on 100 parts by weight of the polyurethane, of a polymer (p) [sic]which is dissolved in a solvent (S') boiling below 100.degree. C.

Abstract: Aqueous-dispersed polymer compositions are prepared comprising polymerized therein (a) monovinylidene aromatic monomer (e.g., styrene), (b) acyclic conjugated diene monomer (e.g., butadiene), and (c) ethylenically unsaturated carboxylic acid monomer(s) (e.g. acrylic and or fumaric acid) and are further benefited by polymerizing therein (d) a cyanoalkyl ester of an ethylenically unsaturated carboxylic acid. The aqueous-dispersed polymers can also comprise polymerized therein an ethylenically unsaturated nitrile monomer such as acrylonitrile. The use of the cyanoalkyl ester, such as 2-cyanoethylmethacrylate (2-CEMA), results in latex polymers with improved performance in paper coating formulations. In particular, paper coatings can be prepared which have improved performance (i.e., wet and dry pick resistance) in offset printing applications.

Abstract: A paper coating composition consisting essentially of an aqueous plastic dispersion which is based on .alpha.-methyleneglutaronitrile, a C.sub.8 - to C.sub.12 - monovinylaromatic compound, a plasticizing component selected from the group consisting of C.sub.4 - to C.sub.6 acyclic, conjugated diolefines and C.sub.4 - to C.sub.8 - alkyl (meth)acrylates, and a C.sub.3 - to C.sub.6 .alpha., .beta.-monoethylenically unsaturated carboxylic acid as binder, and conventional auxiliaries.

Abstract: A water-soluble ink-jet dye for use in ink-jet printing is designed to undergo a reaction, initiated by the loss of water and natural neutralization, as the ink dries on paper, causing the dye to (1) change and lose solubility and (2) bind to the paper. The dye comprises a polymeric chain, to which one or more chromophores are attached. Also attached to the chain are a plurality of hydroxyl or amine groups, up to approximately one-half of which are converted to carboxyl groups. The ink containing the dye is maintained at a basic pH. Upon printing on a print substrate, the dye is neutralized, causing lactone (from hydroxyl groups) or lactam (from amine groups) ring formation. The resulting reacted dye is substantially totally waterfast on the print substrate.

Abstract: Wet adhesion, ICI viscosity, and scrub resistance of a paint are improved by incorporating into the paint a binder that comprises a film former and polymeric composition. The polymeric composition comprises either (a) about 15 to about 35 weight percent of substantially non-self-polymerizable monomer, about 30 to about 70 weight percent of a copolymerizable monomer whose homopolymer is water-soluble, and about 10 to about 35 weight percent of a wet adhesion promoting monomer, or (b) about 35 to about 65 weight percent of the substantially non-self-polymerizable monomer and about 35 to about 65 weight percent of the wet adhesion promoting monomer. The polymeric composition and film former are substantially inseparable by chromatographic means.

Abstract: A water-borne low adhesion backsize and release coating latex composition comprising: (a) about 5 to about 70 weight percent of a polymer comprising polymerized free radically polymerizable monomer of the formula C.sub.n H.sub.2n+1 --P--C.sub.m H.sub.2m --X--CR.sup.1 .dbd.CH.sub.2 wherein n is an integer of about 12 to about 20, P is a divalent polar linking group, X is a divalent linking group selected from the group consisting of ##STR1## m is an integer of about 2 to about 10, and R.sup.1 is selected from the group consisting of --H and --CH.sub.3, (b) about 30 to about 95 weight percent of an aqueous phase, and (c) about 0.05 to about 4 weight percent of an emulsifier, wherein particles of the polymer are stabilized by the emulsifier and dispersed within the aqueous phase. A method of making the latex and sheet materials coated therewith.

Abstract: Polyvinyl chloride surfaces receive a well-adhering, water and ethanol resistant coating with good plasticizer sealing effect by varnishing with an aqueous dispersion of (meth)acrylate polymers that are synthesized from 10 to 90% by weight acrylic and/or methacrylic acid alkyl or cycloalkyl esters with 1 to 10 carbon atoms in the ester group, 90 to 10% by weight acrylic and/or methacrylic acid esters with aromatic groups constituting or contained in the ester group, and small quantities of other monomers. The copolymers are preferably emulsion polymerized and may be synthesized as multiple-phase polymers according to the core-shell model.

Abstract: Water soluble polymerizable acrylic prepolymers can be formed from ethylenically unsaturated monomers that include monomers that provide a pendant group that is a blocked, saturated, ethylenic group, followed by unblocking the pendant saturated ethylenic group to leave a pendant ethylenically unsaturated group. These prepolymers can be copolymerized through these unsaturated groups, for instance after impregnation into a permeable substrate as in chemical grouting or shut off processes, to form cross linked solid polymers. The polymerizable monomers that are ethylenically unsaturated but which also include the blocked ethylenic group are also novel.

Abstract: Wet adhesion, ICI viscosity, and scrub resistance of a paint are improved by incorporating into the paint a binder that comprises a film former and polymeric composition. The polymeric composition comprises either (a) about 15 to about 35 weight percent of substantially non-self-polymerizable monomer, about 30 to about 70 weight percent of a copolymerizable monomer whose homopolymer is water-soluble, and about 10 to about 35 weight percent of a wet adhesion promoting monomer, or (b) about 35 to about 65 weight percent of the substantially non-self-polymerizable monomer and about 35 to about 65 weight percent of the wet adhesion promoting monomer. The polymeric composition and film former are substantially inseparable by chromatographic means.

Abstract: Odorless, aqueous copolymer dispersions are produced by emulsion copolymerizing a comonomer recipe which comprises at least 60% by weight of styrene and/or butadiene and/or an acrylic ester and/or a vinyl nitrile, and, optionally, up to 40% by weight of at least one other copolymerizable comonomer, in an aqueous medium of copolymerization, in the presence of an alkoxy, aryloxy, acyloxy or acylamino substituted diphenyl disulfide chain transfer agent.

Abstract: A formaldehyde-free latent crosslinking monomer represented by the formula ##STR1## in which R.sup.1 and R.sup.2 are C.sub.1 -C.sub.3 alkyl; R.sup.3 is hydrogen, C.sub.1 -C.sub.3 alkyl, or R.sup.4 --C(O)--; and R.sup.4 is C.sub.1 -C.sub.3 alkyl or C.sub.6 -C.sub.8 aryl, contains an allyl group capable of undergoing addition copolymerization and a dialkoxy ethyl group capable of crosslinking under acidic conditions. The monomer can be copolymerized with comonomers to form emulsion polymers for use as formaldehyde-free binders in nonwoven textiles. Methods for the preparation of the monomer, the polymers, and the nonwoven fabrics are described.

Abstract: Dispersion polymers, processes for their preparation and their use are disclosed. The dispersion polymers being obtained by a seed polymerization process in the presence of seed latices with a high residual monomer content and a monomer mixture of at least one compound of the formula I ##STR1## wherein n=1-6;R.sub.1 =H or CH.sub.3 andR.sub.2 and R.sub.3 are identical or different, where R.sub.2 and R.sub.3 =--(CH.sub.2).sub.m --CH.sub.3, and m=0-7, or ##STR2## in which X, Y and Z=(CH.sub.2).sub.p --CH.sub.3 and p=1-3, where X, Y and Z are identical or different,or R.sub.2 and R.sub.3 =an aryl radical,and if appropriate acrylic acid, methacrylic acid, crotonic acid and monomers from which the seed latex is prepared. The invention furthermore relates to the biologically active latex conjugates which are obtained using the dispersion polymers and are particularly suitable for serological and immunological determination methods.

Abstract: Vinyl acetate/ethylene (VAE) copolymer emulsions having extended shelf life which are particularly suited for use as binders of nonwoven substrates. The copolymer emulsions are prepared by incorporating 1 to 45 wt % tetramethylol glycoluril, based on the amount of vinyl acetate in the copolymer, into an aqueous dispersion of a copolymer consisting essentially of 60 to 94 wt % vinyl acetate, 5 to 30 wt % ethylene and 1 to 10 wt % of a crosslinkable comonomer. Suitable crosslinking monomers include N-acrylamidoglycolic acid and N-methylol acrylamide. Nonwoven products formed by depositing the emulsion onto a nonwoven substrate exhibit significantly improved resistance to organic solvents.

Abstract: Water-soluble, high molecular weight, linear copolymers of a diallyl ammonium monomer and an acrylamide monomer are prepared by emulsion copolymerization of a major portion of the acrylamide monomer via stage-addition, and the addition of a chain transfer agent at the conclusion of said copolymerization to prevent branching and cross-linking.

Abstract: An aqueous latex contains a functionalized copolymer prepared by emulsion polymerization. The copolymer can be applied to textile nonwoven materials and to various cellulosic substrates, and when utilized as a binder imparts enhanced properties thereto such as wet tensile strength, low temperature cure rates, and the like. The monomers generally forming the copolymer include at least two functional type monomers, one of which contains an activatable ester group, and at least one latex forming monomer.

Abstract: Wet adhesion, ICI viscosity, and scrub resistance of a paint are improved by incorporating into the paint a binder that comprises a film former and polymeric composition. The polymeric composition comprises either (a) about 15 to about 35 weight percent of substantially non-self-polymerizable monomer, about 30 to about 70 weight percent of a copolymerizable monomer whose homopolymer is water-soluble, and about 10 to about 35 weight percent of a wet adhesion promoting monomer, or (b) about 35 to about 65 weight percent of the substantially non-self-polymerizable monomer and about 35 to about 65 weight percent of the wet adhesion promoting monomer. The polymeric composition and film former are substantially inseparable by chromatographic means.

Abstract: A polymer emulsion capable of becoming water swellable is provided by mixing a monomer represented by the general formula ##STR1## (wherein R.sub.1 indicates H or CH.sub.3, R.sub.2 and R.sub.3 indicate an alkyl radical represented by CnH.sub.2N+1 in which n is a positive integer, A indicates --O--CH.sub.2 -- or --NH--CH.sub.2 --CH.sub.2 --, and R.sub.1, R.sub.2 and R.sub.3 are selected within the range wherein the monomer exhibits sparing solubility or insolubility in water)with a crosslinking agent and optionally with another vinyl monomer capable of copolymerization therewith, and emulsion polymerizing the so-obtained mixture in water. The so obtained a polymer can be made water swellable by reaction with an acid, a salt or a quaternizing agent.

Abstract: A cationic polymer composition suitable for use as a flocculating agent and as a retention aid in paper making consists of a mixture ofa) a hydrophilic cationic polymer,b) an anionic surfactant,optionally c) a water-immeriscible oil in which the polymer a) is insoluble,and, if c) is present,optionally d) a lipophilic non-ionic surfactant,optionally e) waterand optionally f) an oil-miscible polar solvent.The compositions may be prepared by water-in-oil emulsion polymerisation and are readily diluted with water.

Abstract: Water-in-oil emulsions of cationic water-soluble copolymers which are prepared by incorporating only a portion of the cationic monomer in the aqueous phase prior to forming the water-in-oil emulsion in which polymerization will occur, forming the emulsion, adding the balance of the cationic monomer such that essentially no polymerization occurs immediately after the addition, and polymerizing the monomers. Copolymers prepared by this process show improved performance over conventionally prepared cationic copolymers.

Abstract: Aqueous synthetic resin dispersions are obtainable by combining an aqueous starting dispersion of a polymer A, which has a glass transition temperature of from -50.degree. to +60.degree. C. and is composed of monoethtylenically unsaturated monomers which, apart from carboxyl groups and their derivatives, carry no further groups which are polymerizable or condensable with one another, with or without butadiene, and an aqueous solution of a polymer B, which is essentially composed of N-hydroxycarboxymethylamides of acrylic and/or methacrylic acid and/or water-soluble salts of these N-hydroxycarboxymethylamides, at the beginning, in the course of, and/or after completion of, the preparation of the aqueous starting dispersion, with the proviso that the solids content of polymer B is from 0.5 to 10% by weight, based on the total amount of polymer A and polymer B.

Abstract: Water-in-oil emulsions of cationic water-soluble copolymers which are prepared by incorporating only a portion of the cationic monomer in the aqueous phase prior to forming the water-in-oil emulsion in which polymerization will occur, forming the emulsion, adding the balance of the cationic monomer such that essentially no polymerization occurs immediately after the addition, and polymerizing the monomers. Copolymers prepared by this process show improved performance over conventionally prepared cationic copolymers.

Abstract: A homogeneous composite polymer containing, in an interpenetrated form, 20% to 80% by weight of silica and 80% to 20% by weight of a three-dimensional crosslinked acrylic, vinyl and/or allyl copolymer comprising, in a copolymerized form, 98% to 70% by weight of at least one monofunctional acrylic, vinyl or allyl monomer and 2% to 30% by weight of a difunctional acrylic or allyl crosslinking monomer is useful in liquid chromatography.

Abstract: Aqueous synthetic resin dispersions are obtainable by single-stage emulsion copolymerization of a monomer mixture ofa) from 35 to 99.5% by weight of one or more vinyl esters of aliphatic monocarboxylic acids of not more than 6 carbon atoms (monomers A),b) from 0.5 to 10% by weight of one or more monomers of the general formula I (monomers B) ##STR1## where R.sup.1, R.sup.2 and R.sup.3 independently of one another are each hydrogen or methyl,c) from 0 to 64.5% by weight of one or more of the monomers acrylonitrile, styrene and esters of an .alpha.,.beta.-monoethylenically unsaturated monocarboxylic acid of 2 to 5 carbon atoms and an alkanol of 1 to 8 carbon atoms (monomers C) andd) from 0 to 5% by weight of one or more .alpha.,.beta.

Abstract: There are disclosed normally tacky, pressure-sensitive adhesive compositions comprising one or more normally tacky polymers having a T.sub.g of about 0.degree. C. or less and containing pendant functional groups attached to the backbone and having the formula: ##STR1## in which R.sub.1 is a divalent organic radical at least 3 atoms in length, and X is organoacyl or cyano, the polymers preferably also being normally tacky when cured. Such polymers have markedly improved cohesive strength (shear holding value) with little or no detriment to adhesive tack or adhesion (peel resistance), and these improvements are realized without the necessity of incorporating cross-linking monomers such as N-methylolamides or other cross-linking agents. Pressure-sensitive adhesive, water-based emulsions containing such polymers and pressure-sensitive adhesive articles comprising a substrate having at least a portion of one surface thereof coated with the adhesive compositions are also disclosed.

Abstract: A method for producing an acidic, concentrated polymeric emulsion that can be diluted and thereafter neutralized to provide a novel polymeric thickener is disclosed. The method comprises emulsion-polymerizing, in acidic aqueous media, a first monomer mixture which comprises an acidic moiety-containing monomer and an ethylenically-unsaturated monomer copolymerizable with the acidic moiety-containing monomer, for producing an alkali-soluble dispersion in the acidic aqueous media. The ethylenically-unsaturated monomer is selected from the group consisting of a mono vinylidene aromatic monomer, an alpha beta ethylenically-unsaturated carboxylic acid ester and its derivatives, a vinyl ester and its derivatives, an ethylenically-unsaturated dicarboxylic anhydride and its derivatives, and mixtures thereof.

Abstract: An improved wet strength binder is prepared by a process in which interaction between an olefinic carboxylic acid monomer, such as itaconic acid, and a cross-linker, such as MAGME, is minimized.

Abstract: Mannich (alk)acrylamide microparticles are produced at high solids contents without a significant increase in bulk viscosity by inverse microemulsion polymerization and provide superior dewatering characteristics.

Abstract: A solution comprising(a) water; and(b) about 0.01 to about 10 weight % of a water soluble polymerizable monomer characterized by the formula ##STR1## wherein n is a 6-22 straight chained or branched chained alkyl or cycloalkyl group and the ration of t to s is about 1/5 to 5/1.

Abstract: (A) 1 to 50% by weight of at least one end carboxyl bearing reactive vinyl monomer of the formula: ##STR1## in which R.sub.1 is hydrogen or methyl group; R.sub.2 is a substituted or unsubstituted aliphatic hydrocarbon having 2 to 10 carbon atoms, alicyclic hydrocarbon having 6 to 7 carbon atoms or aromatic hydrocarbon having 6 carbon atoms; A is a repeating unit of ##STR2## R.sub.3 is ethylene or propylene; R.sub.4 is a substituted or unsubstituted alkylene having 2 to 7 carbon atoms; R.sub.5 is a substituted or unsubstituted alkylene having 2 to 5 carbon atoms; m is an integer of 1 to 10; n is an integer of 2 to 50; X is an inorganic or organic base, and when .alpha., .beta.-ethylenically unsaturated compound(s) (B) hereinunder referred to includes a basic relative monomer, it may be hydrogen atom, and(B) 99 to 50% by weight of at least one other .alpha., .beta.-ethylenically unsaturated compounds, in an aqueous medium through an emulsion polymerization and removing the said medium therefrom.

Abstract: Disclosed is an aqueous acrylic polymer dispersion containing no protective colloid and a dispersed phase comprised of a polymer of (a) one or more monomers selected from the group consisting of acrylic or methacrylic esters containing up to 22 carbon atoms and (b) 0.1% to 2%, by weight of the total monomers, of at least one water-soluble free-radically polymerizable monomer selected from the group consisting of linear or cyclic, nonaromatic sulfonic acids or sulfonic acid metal salts, amine salts, ammonium salts and quaternary ammonium salts having (i) 4 to 36 carbon atoms, (ii) conjugated unsaturation and (iii) a solubility of at least 0.4 gram per 100 ml of water at about 20.degree. C. Also disclosed is a process for preparing the aqueous acrylic polymer dispersion by the aqueous emulsion polymerization, in the absence of a protective colloid and in the presence of a polymerization initiator, of (a) the acrylic or methacrylic ester monomer(s) and (b) the free-radically polymerizable monomer(s).

Abstract: An aqueous dispersion of a cationic polymer is disclosed, which is obtained by reacting an ethylene copolymer comprising from 40 to 80% by weight of ethylene and from 20 to 60% by weight of at least one aminoalkyl acrylamide comonomer represented by formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group; R.sub.2 and R.sub.3 each represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms; and n represents an integer of from 2 to 4, and having a melt index, as measured in accordance with JIS K-6760, of from 10 to 1,000 g/10 min with hydrochloric acid in water to form a quaternary salt and subsequently reacting the resulting quaternary salt with an epihalohydrin compound through addition reaction. The aqueous dispersion provides a coating film having an improved electrical conductivity or produces effects to simultaneously improve degree of sizing and wet strength of paper.

Abstract: An aqueous styrene-acrylic type polymer dispersion useful as a wet strength adhesive contains at least one copolymer consisting of 0.5 to 5% by weight of N-allylacetoacetamide monomer (A) and 99.5 to 95% by weight of a mixture of monomers (B) consisting of 90 to 99.9% by weight of styrene and of at least one monomer selected from C.sub.1 to C.sub.8 alkyl (meth)acrylates and 10 to 0.1% by weight of at least one monomer selected from acrylic acid, methacrylic acid, acrylamide and methacrylamide.

Abstract: Disclosed are aqueous polyacrylate dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of acrylic esters, methacrylic esters and mixtures thereof in the absence of a protective colloid, wherein the improvement comprises conducting the polymerization in the presence of, by weight of the total monomer content, from about 0.1 to 2% of at least one substantially completely water-soluble monomer having conjugated unsaturation. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.

Abstract: The invention relates to dispersion polymers, processes for their preparation and their use, the dispersion polymers being obtained by a seed polymerization process in the presence of seed latices with a high residual monomer content and a monomer mixture of at least one compound of the formula I ##STR1## wherein n=1-6; R.sub.1 =H or CH.sub.3 andR.sub.2 and R.sub.3 are identical or different, whereR.sub.2 and R.sub.3 =-(CH.sub.2).sub.m -CH.sub.3, and m=0-7, or ##STR2## or R.sub.2 and R.sub.3 =an aryl radical, and if appropriate acrylic acid, methacrylic acid, crotonic acid and monomers from which the seed latex is prepared.The invention furthermore relates to the biologically active latex conjugates which are obtained using the dispersion polymers and are particularly suitable for serological and immunological determination methods.

Abstract: Aqueous synthetic dispersions based on copolymers of acryl polymers and/or vinyl polymers containing both hydroxylalkyl(meth)acrylate monomers and etherified N-alkylol(meth)acrylamide monomers. These dispersions are suitable as bonding agents for the production of glossy and solvent-resistant, thermosetting coating materials with good adhesion.

Abstract: An aqueous styrene-acrylic type polymer dispersion useful as a wet strength adhesive contains at least one copolymer consisting of 0.5 to 5% by weight of N-allylacetoacetamide monomer (A) and 99.5 to 95% by weight of a mixture of monomers (B) consisting of 90 to 99.9% by weight of styrene and of at least one monomer selected from C.sub.1 to C.sub.8 alkyl(meth)acrylates and 10 to 0.1% by weight of at least one monomer selected from acrylic acid, methacrylic acid, acrylamide and methacrylamide.

Abstract: There are disclosed normally tacky, pressure-sensitive adhesive compositions comprising one or more normally tacky polymers having a T.sub.g of about 0.degree. C. or less and containing pendant functional groups attached to the backbone and having the formula: ##STR1## in which R.sub.1 is a divalent organic radical at least 3 atoms in length, and X is organoacyl or cyano, the polymers preferably also being normally tacky when cured. Such polymers have markedly improved cohesive strength (shear holding value) with little or no detriment to adhesive tack or adhesion (peel resistance), and these improvements are realized without the necessity of incorporating cross-linking monomers such as N-methylolamides or other cross-linking agents. Pressure-sensitive adhesive, water-based emulsions containing such polymers and pressure-sensitive adhesive articles comprising a substrate having at least a portion of one surface thereof coated with the adhesive compositions are also disclosed.