Abstract: Stable amphoteric aqueous dispersions of synthetic polymers obtained by reacting at least one unsaturated nitrogen compound capable of being hydrolyzed in an acid or alkaline medium with an aqueous emulsion reaction mixture, containing cationic species, of at least one non-ionic monomer capable of being copolymerized with the nitrogen compound to form synthetic polymers and at least one substance which generates cationic species capable of chemically binding with the synthetic polymers.

Abstract: Water-in-oil emulsions of water-soluble polymers, i.e. polyacrylamides, which are subject to freeze-thaw degradation are stabilized against repeated freeze-thaw cycles by incorporating specific substituted succinic anhydrides.

Abstract: Aqueous dispersions of partially cross-linked copolymer particles useful in aqueous coating compositions is produced by copolymerizing in aqueous emulsion a mixture of: (A) from 1% to 30% of polyethylenically unsaturated monomer; (B) from 3% to 30% of hydroxy-functional monoethylenically unsaturated monomer; (C) from 0.5% top 10% of a salt-forming monoethylenically unsaturated monomer selected from monoethylenic carboxylic acid monomer and monoethylenic amine monomer; and (D) the balance of the copolymer consisting essentially of copolymerizable monoethylenically unsaturated monomer, preferably nonreactive monomer such as vinyl acetate.

Abstract: A 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: A copolymer emulsion for bonding nonwovens demonstrating increased blocking resistance comprising an aqueous medium having colloidally dispersed therein a copolymer consisting essentially of vinyl acetate, ethylene, a crosslinkable comonomer which is an N-acrylamidoglycolic acid or an acrylamidobutyraldehyde dialkyl acetal type compound, and a small amount of an acrylamide.

Abstract: Disclosed herein is an improved process for preparing anionic acrylic latex composition which contains copolymers containing effective amounts of acid groups and amino groups.

Abstract: An aqueous dispersion of a vinyl copolymer resin is prepared by polymerizing 1 to 15 parts by weight of a polyoxyethylene-containing hydrophilic polymerizable vinyl monomer of which polyoxyethylene moiety has an average molecular weight of 2,000 to 10,000, 99 to 85 parts by weight of at least one specific polymerizable vinyl monomer and 0 to 5 parts by weight of alpha, beta-unsaturated carboxylic acids, salts thereof or anhydrides thereof in an organic solvent, and dispersing the resulting vinyl copolymer resin solution in water.

Abstract: A process is provided for coating an electrically conductive substrate with an aqueous coating composition containing a cationic binder wherein the binder is obtained by polymerization of 100 parts by weight of a specific monomer mixture in the presence of 1-20 parts by weight of an epoxy group-free adduct of a bisphenol bisglycidyl ether and an ethylenically unsaturated amido amine. The ethylenically unsaturated amido amine, in turn, is the product of a polyamine having 1-2 primary amino groups and 1-2 secondary amino groups and an ethylenically unsaturated monocarboxylic acid having 18-24 carbon atoms. The invention also pertains to the aqueous coating composition as such.

Abstract: A process is provided for coating an electrically conductive substrate with an aqueous composition containing a cationic binder wherein the binder is obtained by polymerization of 100 parts by weight of a specified monomer mixture in the presence of 0.25 to 4 parts by weight of an acrylic or methacrylic bisphenol ester. The invention also pertains to the aqueous composition as such.

Abstract: An ionic gel formed by polymerization of isopropylacrylamide in the presence of an ion-containing monomer, a crosslinking agent and a suitable liquid medium is provided. The gel is capable of drastic volume change in response to solvent composition, temperature, pH, or ion composition.

Abstract: A chalk-adhesion polymer latex for exterior coatings especially suitable for blending with an acrylic formulation, such as vinyl acetate/ acrylic copolymers. The polymer is derived from a monomer precursor composition, including an acrylic moiety, such as an acrylate and a methacrylate, together with small amounts of a nitrogen-containing alkyl acrylate, an acrylamide and propylene glycol. The method of preparing the chalk adhesion polymer includes emulsification stages to accomplish the polymerization.

Abstract: A cationic polymer composition suitable for use as a flocculating agent and as a retention aid and dewatering agent in paper making consists of a mixture of(a) a hydrophilic cationic polymer of(a.sub.1) acrylamide and/or methacrylamide and(a.sub.2) dialkylamino-C.sub.2-3 alkylene-(meth)acrylamidethe molar quantity of cationic monomer units (a.sub.2) being from 0.2 to 9 mol % of the total(b) an anionic surfactant(c) a water-immiscible oil in which the polymer (a) is insoluble, andoptionally (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 copolymerization and are readily diluted with water.

Abstract: The blocked isocyanate crosslinker commonly used in conventional electrocoat compositions are difficult to incorporate satisfactorily into latex paint compositions for such application. An improved homogenized feed process for incorporating such water insoluble crosslinking agents into the latex particle during emulsion polymerization of reactive (hydroxy functional) vinyl monomers provides thermosetting latex of high cleanliness. The invention pertains to an improved cationic, amine-stabilized electrocoating composition and process.

Abstract: Aqueous bleaching compositions can be satisfactorily colored by inclusion therein of a colored polymer latex which consists of a copolymer of a hydrophobic monomer with a reactive copolymerizable monomer containing a chromophore. These colored polymer latices are particularly suitable for coloring hypochlorite-containing bleaching compositions.

Abstract: A process is disclosed for preparing a solid, water absorbing, cross-linked polyacrylate resin including combining potassium acrylate and a polyvinyl monomer, such as N,N-methylene bisacrylamide, with water in an amount of 55 to 80 combined weight percent of potassium acrylate and polyvinyl monomer based on the total weight of potassium acrylate, polyvinyl monomer and water to form a monomer mixture, and adding a polymerization initiator to the monomer mixture to initiate polymerization of the monomer mixture. The monomer mixture then is polymerized without external heating by utilizing the exothermic heat of reaction as substantially the only non-ambient energy source to drive water away from said polyacrylate resin to form the cross-linked polyacrylate resin having a water content sufficiently low (i.e. 15% or less) to be powdered, such as by pulverization, without an intermediate drying step.

Abstract: Aqueous based pressure sensitive adhesives having improved shear properties are prepared from a latex of a monomer composition selected from the group:(a)(i) from about 60 to 99.5 weight percent of an ester of acrylic or methacrylic acid; and(ii) from about 0.5 to about 40 weight percent of a C.sub.3-9 ethylenically unsaturated carboxylic acid;(b)(i) from about 40 to 99 weight percent of a C.sub.4-8 conjugated diolefin;(ii) optionally up to about 60 weight percent of a vinyl aromatic monomer;(iii) from about 0.5 to about 40 weight percent of a C.sub.3-9 ethylenically unsaturated carboxylic acid; and(c)(i) from about 1 to 40 weight percent of a C.sub.2-4 monoolefin;(ii) from about 60 to 99.5 weight percent of a vinyl ester; and(iii) from about 0.5 to 40 weight percent of a C.sub.3-9 ethylenically unsaturated carboxylic acid;said latex having been neutralized to a pH of equal to or greater than about 6 with an alkali metal hydroxide or salt.

Abstract: An emulsion of a quarterly vinyl acetate-ethylene copolymer emulsified in an aqueous medium, is provided. The quarterly copolymer comprises: 100 parts, by weight, of a vinyl acetate-ethylene copolymer prepared from 95 to 60 parts, by weight, of vinyl acetate monomer (I) and 5 to 40 parts, by weight, of ethylene monomer (II); 0.5 to 7 parts, by weight, of an acid monomer (III) selected from the group consisting of monobasic unsaturated carboxylic acids each having 3 to 17 carbon atoms, dibasic unsaturated carboxylic acids each having 3 to 17 carbon atoms, anhydrides of said dibasic unsaturated carboxylic acids and semi-esters of said dibasic unsaturated carboxylic acids each having an alkyl chain of the alcohol part having 1 to 10 carbon atoms, and mixture thereof; and 0.5 to 15 parts, by weight, of an acrylamide compound (IV) represented by the general formula of: CH.sub.2 .dbd.CHCONHCH.sub.2 OR; wherein R is an alkyl group having 1 to 10 carbon atoms.

Abstract: New copolymers soluble in water and aqueous acids are disclosed comprising in a statistical distribution in the macromolecule at least 5% by weight of entities containing a formylamino functionality and at least 10% by weight of entities containing an amino carbonyl functionality, which are stable in high concentrations of Bronsted-Lowery acids and can be used as friction reducers in the stimulation of oil or gas wells.

Abstract: The invention pertains to sprayable latex polymers produced by step-wise polymerization of ethylenically unsaturated monomers comprising alkylol acrylamide monomer, functional monomers, and other monomers, wherein the alkylol acrylamide monomers are copolymerized in the second stage monomer addition to preferentially locate alkylol acrylamide groups in the surface portion of the latex polymer particles.

Abstract: The present invention is concerned with the production and use of water-insoluble particulate heteropolymers made by sequential emulsion polymerization in dispersed particles of which a "core" of a polymeric base is at least partially encased in a "sheath" polymer that is permeable to an acid, such as acetic acid, adapted to cause swelling of the core by neutralization. The aqueous dispersion of the acid-swollen, base-containing core/sheath particles is useful in making water-base coating compositions, microvoids being formed in cores of the swollen particles in the film during the drying thereof. Thus, the heteropolymer dispersion can serve as an opacifying agent in coating compositions, such as water-base paints, as a supplement or replacement of part or all of the pigmentary material or extenders that would otherwise be used in such coating compositions.

Abstract: A composition of matter comprising (1) an N-methylol monomer of the following general formula: ##STR1## wherein R is hydrogen, lower alkyl (C.sub.1 -C.sub.4), isopropenyl, or phenyl and R.sub.1 is hydrogen or methyl, and (2) a polyalkoxylate substance having at least a portion of its structure represented by (alkylene oxide).sub.x, wherein x is an integer, the composition containing about x molecules of the N-methylol monomer per molecule of polyalkoxylated substance. Such N-methylol monomer/polyalkoxylated complexes are polymerized to yield ungelled cross-linkable N-methylol polymers. The N-methylol polymers are cross-linked in a controlled manner with polyvinyl alcohol.

Abstract: An emulsion of a quarterly vinyl acetate-ethylene copolymer emulsified in an aqueous medium, is provided. The quarterly copolymer comprises: 100 parts, by weight, of a vinyl acetate-ethylene copolymer prepared from 95 to 60 parts, by weight, of vinyl acetate monomer (I) and 5 to 40 parts, by weight, of ethylene monomer (II); 0.5 to 7 parts, by weight, of an acid monomer (III) selected from the group consisting of monobasic unsaturated carboxylic acids each having 3 to 17 carbon atoms, dibasic unsaturated carboxylic acids each having 3 to 17 carbon atoms, anhydrides of said dibasic unsaturated carboxylic acids and semi-esters of said dibasic unsaturated carboxylic acids each having an alkyl chain of the alcohol part having 1 to 10 carbon atoms, and mixture thereof; and 0.5 to 15 parts, by weight, of an acrylamide compound (IV) represented by the general formula of: CH.sub.2 .dbd.CHCONHCH.sub.2 OR; wherein R is an alkyl group having 1 to 10 carbon atoms.

Abstract: An improved process for producing an aqueous polymer emulsion is provided wherein a radically polymerizable unsaturated monomer is polymerized in an aqueous medium in the presence of a water-soluble copolymer. The water-soluble copolymer is derived from a combination of (a) a nitrogen-containing ethylenically unsaturated compound with (b-1) an unsaturated carboxylic acid or its salt and/or (b-2) an ethylenically unsaturated sulfonic acid or its salt.

Abstract: An aqueous emulsion comprising a polymeric resin prepared by polymerizing (a) at least one amino acid of either one of the formula: ##STR1## and the formula: ##STR2## with (b) at least one other polymerizable monomer in an aqueous medium, the component (a) and at least a portion of the component (b) being introduced separately into the reaction system.

Abstract: A cationic thermosetting latex, coating compositions prepared therefrom, and the process for providing a protective coating are disclosed. The thermosetting latex comprises a blocked isocyanate curing agent and a cationic acrylic latex which is prepared by copolymerizing ethylenically unsaturated monomers, at least one of which contains an active hydrogen group, in an acidic medium in the presence of a cationic surfactant, of which the gegen-ion is derived from certain phosphorous-containing acids. Such latices, when formulated into coating compositions, provide corrosion-resistant coatings.

Abstract: Aqueous solutions of amide polymers, such as polyacrylamide when treated with small amounts of a water-soluble polyaldehyde and a hypohalite salt at an alkaline pH, react to form firm gels within a short time at ambient temperature. Such gels, which are stable under alkaline as well as acidic conditions, are usefully employed to plug porous subterranean formations, for grouting of leaking soil pipes or wells, and to otherwise render porous structures impermeable to the passage of liquids such as water.

Abstract: Aqueous low-emulsifier dispersions of emulsion copolymers which contain, as copolymerized units,(a) from 35 to 55% by weight of butadiene,(b) from 35 to 60% by weight of styrene,(c) from 1 to 3% by weight of .alpha.,.beta.-monoolefinically unsaturated monocarboxylic acids and/or dicarboxylic acids of 3 to 6 carbon atoms,(d) from 1 to 3% by weight of amides of .alpha.,.beta.-monoolefinically unsaturated monocarboxylic acids and/or dicarboxylic acids of 3 to 5 carbon atoms,(e) from 1 to 4% by weight of N-methylolamides of .alpha.,.beta.-monoolefinically unsaturated monocarboxylic acids and/or dicarboxylic acids of 3 to 5 carbon atoms, or their alkyl ethers, and(f) from 1 to 3% by weight of acrylic acid and/or methacrylic acid monoesters of alkanediols of 2 to 6 carbon atoms,the emulsion containing, as emulsifier, from 0.1 to 0.

Abstract: A procedure is disclosed for preparing polyester fabrics having improved soil release properties. Polyester textiles impregnated with an addition polymer containing free amine groups or salts thereof are cured at elevated temperatures to give the improved fabric.