Abstract: The present invention relates to chelating resins containing methyleneaminoethylsulfonic acid groups, a process for producing them and also their use for removing heavy metals or metals of value from aqueous solutions having a pH of <4, preferably from process water in or from the electronics industry, the electroplating industry or the mining industry.

Abstract: The present invention relates to a process for preparing an aqueous polymer dispersion by free-radical emulsion polymerization of a monomer mixture which comprises N,N-diethylaminoethyl methacrylate, to the polymer dispersion obtainable by this process, and to the use thereof.

Abstract: The present invention provides a process for producing an N-vinylamide polymer in an efficient manner by an aqueous solution polymerization method in which a gel-like polymer having an excellent handling property can be produced, and a polymerization time can be shortened. The process for producing an N-vinylamide polymer by subjecting a monomer component comprising N-vinylamide to aqueous solution polymerization according to the present invention comprises the step of polymerizing the monomer component comprising N-vinylamide in the presence of an inorganic salt, which inorganic salt is present in an amount of not less than 7% by mass based on water in a uniform aqueous solution comprising the monomer component at a concentration not more than a saturated solution concentration thereof as measured at a polymerization initiation temperature.

Abstract: The present invention provides multistage aqueous polymer dispersions which are film-forming at low temperatures, exhibit good blocking resistance in a formulation, even at elevated temperatures, display low foam propensity, and possess good wet adhesion and shelf life, processes for their preparation, and the use thereof as binders for coating substrates.

Abstract: The present invention relates to a process for preparing a polymer dispersion comprising polymerising one or more water soluble anionic monomers (m1) and one or more non-ionic vinyl monomers (m2) present in a reaction mixture further comprising a polymeric stabiliser (B) and a polymeric co-stabiliser (C). It further relates to a polymer dispersion, the use of the polymer dispersion and a process for producing paper.

Abstract: The present invention relates to a process for preparing an aqueous polymer dispersion by free-radical emulsion polymerization of a monomer mixture which comprises N,N-diethylaminoethyl methacrylate, to the polymer dispersion obtainable by this process, and to the use thereof.

Abstract: A hydrophobic acidic group-containing polymeric monomer (a); a water-soluble polymeric monomer (b); water (c); a photopolymerization initiator (d); an aromatic tertiary amine (e) having an electron-withdrawing group; a cross-linkable polymeric monomer (f); and a basic compound (g) for producing a water-soluble salt through a reaction with a part of the hydrophobic acidic group-containing polymeric monomer (a) are included as essential compounding ingredients. A one-part dental adhesive composition that exhibits high adhesive strength and high storage stability in adhesion between a teeth, and more particularly enamel or dentine, and a dental repairing material, and more particularly a resin material, is provided.

Abstract: An aqueous copolymer composition containing copolymer particles containing polymerized units of (meth)acrylonitrile, (meth)acrylamide, or combinations thereof; and at least one unsaturated fatty acid ester is provided. A method is provided for preparing a coating from the aqueous copolymer composition. The aqueous copolymer composition is useful for preparing crosslinked coatings, suitable in coating applications such as architectural or maintenance paints.

Abstract: Provided is a film-forming composition substantially free of organic solvent which includes an aqueous dispersion of polymeric microparticles prepared by emulsion polymerization of a monomeric composition containing (1) at least 10 percent by weight of one or more vinyl aromatic compounds; (2) 0.1 to 10 percent by weight of one or more carboxylic acid functional polymerizable, ethylenically unsaturated monomers; (3) 0 to 10 percent by weight of one or more polymerizable monomers having one or more functional groups capable of reacting to form crosslinks; and (4) one or more polymerizable ethylenically unsaturated monomers. Each of (1), (2), (3) and (4) are different one from the other and at least one of (3) and (4) is present in the monomeric composition. Multi-layer composite coatings and coated substrates also are provided.

Abstract: This invention relates to aqueous emulsions comprising a water-dispersible copolymer which is non-dispersible in aqueous solutions containing 0.5% or more of an inorganic salt, comprising acidic ethylenically unsaturated monomers and ethylenically unsaturated monomers. The acidic ethylenically unsaturated monomers and the ethylenically unsaturated monomers are defined herein. The present invention also pertains to emulsion polymerization methods for making the aqueous emulsions with or without a surfactant.

Abstract: A radiation curable resin composition comprising a water soluble amine salt prepolymer formed between an oligomer or compound having at least one amine group and an unsaturated carboxylic acid and use of this composition as a surface coating or ink.

Abstract: A one-step direct method of making a high molecular weight functionalized polyolefin aqueous emulsion is provided. In this one-step direct method, a functionalized polyolefin having a molecular weight of at least 10,000, a fatty acid, a base, a surfactant, and water are heated in a pressure reaction vessel to a temperature above the emulsification temperature of the polyolefin with agitation for a period of time sufficient to form an aqueous emulsion. This high molecular weight functionalized polyolefin aqueous emulsion can be added to a sizing composition and applied directly onto glass fibers in the glass fiber manufacturing process.

Abstract: This invention relates to aqueous emulsions comprising a water-dispersible copolymer which is non-dispersible in aqueous solutions containing 0.5% or more of an inorganic salt, comprising acidic ethylenically unsaturated monomers and ethylenically unsaturated monomers. The acidic ethylenically unsaturated monomers and the ethylenically unsaturated monomers are defined herein. The present invention also pertains to emulsion polymerization methods for making the aqueous emulsions with or without a surfactant.

Abstract: The invention concerns a saline aqueous dispersion of a water soluble (co)polymer obtained from a composition of water soluble monomers, comprising for 100 mole parts, 2 to 100 mole parts of at least a compound of formula (I) wherein: R1=H or —CH3: R2=—CH3; —C2H5; —C3H7 or —C4H9; and compound (I) is optionally quaternized on one of the nitrogen atoms, which is symbolised by the fact that the associated R3 and X− and + are within square brackets; when compound (I) is quaternized on a single nitrogen, R3 and X− represent the following: (I) R3=CH2C6H5; and X=Cl− or CH3OSO−; or (2) R3=—(CH2)pCH; with p an integer from 3 to 11; and X− represents Br− or I−; when compound (I) is quaternized on both nitrogen atoms, both X− can he identical or different and the both R3's can he identical or different, in which case (3) R3=—CH2—C6H5; and X−=Cl−; or (4) R3&equa

Abstract: What is described is a polymeric hydrogel product of a stable, aqueous polymeric composition which composition forms a clear to translucent film upon application to a substrate, and includes, by weight, 5-75% of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) 25-95% of water, made by irradiating the composition with high energy electron beam or gamma-radiation.

Abstract: The invention concerns a salt-free aqueous dispersion of a water soluble dispersion obtained from a composition of monomers comprising, for 100 mole parts, 0.5 to 99.

Abstract: Linear, branched or crosslinked polymer, capable of being obtained by polymerization of N-alkylacrylamide, in which the alkyl radical is linear or branched and comprises from 1 to 6 carbon atoms, with one or more monomers chosen from cationic monomers, monomers comprising at least one partially salified or completely salified strong acid functional group or monomers comprising at least one partially salified or completely salified weak acid functional group. A method of preparing the polymer is also disclosed.

Abstract: An object is to remarkably improve the water resistance and weather resistance of the cured coating film in the aqueous curable resin composition. An aqueous dispersion is used as a main agent which contains, as essential components, gel-like resin dispersed particles having a functional group selected from a salt of a tertiary amino group or a salt of an acid group and an aqueous medium, and a compound having both an epoxy group and a hydrolyzable silyl group is used as a curing agent.

Abstract: A process for preparing aqueous polymer dispersions by means of a polymerization, conducted in an aqueous system, of at least one free-radically polymerisable ethylenically unsaturated monomer in the presence of a polymerisation initiator, wherein the pH of the aqueous dispersion is adjusted during the preparation process by adding at least two different, basic reagents, at least one of said basic reagents being added in a plurality of stages.

Abstract: Pressure sensitive adhesives can be formed using gamma irradiation. One embodiment is a pressure sensitive adhesive which is a polymeric reaction product formed by gamma ray irradiation of an emulsion composition. The emulsion composition includes water; (meth)acrylate monomer material; polar, free-radically polymerizable material that is copolymerizable with the (meth)acrylate monomer material; and at least one emulsifier.

Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula wherein the terminal, modified hydrazide groups are present in an amount of 1 to 25% by weight [calculated as C(O)—NH—NH—C(O), MW 84], based on the weight of the polyurethanes, and wherein X represents OR′ or NHR′, R represents the residue obtained by removing the isocyanate groups from an NCO prepolymer, R′ represents a group which is inert to Isocyanate groups under the conditions used to form the polyurethane of in formula I, R″ represents a divalent, linear or branched aliphatic group containing 2 to 10 carbon atoms, provided that there are at least two carbons between the oxygen atoms, wherein the aliphatic group may optionally be substituted by heteroatoms to form ether or ester groups, m is 0 or 1 and n is 2 to 4.

Abstract: The present invention provides a multiple part ionomeric cement system comprising an organic composition that is substantially free of added water, and an aqueous composition comprising water. The organic composition contains at least a hydrophilic component and an acid functional compound that is provided as greater than 1.0% weight of the organic composition. The liquid ingredients of the compositions are miscible, both as separate compositions and when mixed together.

Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula 1

Abstract: A process for preparation of ceramic objects which comprises: (a) applying a layer of a high-solids photocurable ceramic composition, to a substrate, the composition comprising: (1) at least 10 percent by volume of water; (2) at least 0.05 percent by weight of photocurable compounds which are soluble or dispersible in water; and (3) at least 45 volume percent dispersed ceramic particles; and (b) subjecting the composition to sufficient ultraviolet radiation to react the compounds or polymers sufficiently to form a layer of the photocurable compounds or polymers, which is water-insoluble and non-dispersible in water, having the ceramic particles dispersed therein.

Abstract: The present invention is directed to a method of producing a waterborne isocyanate-modified acrylic polymer. The method provides for reacting a compound having at least two-isocyanate functionalities with an isocyanate-reactive polymer to produce the isocyanate-modified acrylic polymer of the present invention having extended shelf stability and solvent resistance.

Abstract: The present invention provides a multiple part ionomeric cement system comprising an organic composition that is substantially free of added water, and an aqueous composition comprising water. The organic composition contains at least a hydrophilic component and an acid functional compound that is provided as greater than 1.0% weight of the organic composition. The liquid ingredients of the compositions are miscible, both as separate compositions and when mixed together.

Abstract: A two-component thermosetting coating composition is disclosed wherein the binder components comprise: (a) an amino component comprising an aqueous solution and/or dispersion of at least one polyacrylate containing amino groups in a quantity sufficient to make said polyacrylate soluble and/or dispersible in water; and (b) a polyisocyanate component containing free isocyanate groups. Also disclosed is the method of emulsifying component (b) into component (a).

Abstract: Processes for spray drying water-soluble and water-swellable vinyl-addition polymer-containing dispersions, emulsions and microemulsions to obtain substantially dry water-soluble or water-swellable polymer particles, compositions of substantially dry water-soluble or water-swellable polymer particles, methods of agglomerating spray-dried polymer particles, and methods of using spray-dried polymer particles and agglomerates in water-treating, mining, paper, food processing, soil conditioning, solution thickening, biotechnological, and oil recovery applications are disclosed.

Abstract: Substantially permanent or removable coatings can be prepared from a composition comprising a polymer dissolved or dispersed in a multicomponent medium that contains water, a low-boiling polar organic solvent, and a high-boiling point solvent. The polymer is characterized by containing structural units formed from the polymerization of a polymerizable strong cationic monomer, a polymerizable acid monomer, and optionally a non-interfering monomer. The composition forms a dust-free and tack-free film that can be removed by a combination of water and an organic solvent. The film can also be made resistant to organic solvents as well as acids and bases with the addition of a crosslinking agent to the composition.

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: 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: The invention relates to aqueous dispersions of plastics having a solids content of 30 to 70% by weight and a reduced formaldehyde content, based on polymers of one or more monomers from the group comprising acrylic acid esters, methacrylic acid esters, vinyl esters, olefins, vinyl halides, vinylaromatics and ethylenically unsaturated carboxylic acids and amides thereof, and a content of 0 to 10% by weight, based on the total weight of the polymer, of N-alkylamides and/or N-alkoxyalkylamides of ethylenically unsaturated carboxylic acids, wherein the dispersion contains 0.05 to 10% by weight, based on the polymer, of one or more peroxy compounds from the group comprising hydrogen peroxide, organic peroxides, perborates, percarbonates, persulfates and perphosphates.

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: 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: A process for preparing polymer non-aqueous dispersions to be formulated together with a binder component in coating compositions, which comprises the steps of: (1) emulsion polymerizing a hydroxy group containing .alpha.,.beta.-ethylenically unsaturated monomer, a polyfunctional .alpha.,.beta.-ethylenically unsaturated monomer and an .alpha.,.beta.-ethylenically unsaturated monomer different therefrom by using a water-soluble polymerization initiator, preferably a persulphate, in a soap free system or in the presence of an ester group containing anionic or cationic surfactant; adding an organic solvent, preferably comprising an amphipathic organic solvent, to a resultant polymer aqueous dispersion; and then adding a basic compound catalyst when the anionic surfactant is used or an acidic compound catalyst when the cationic surfactant is used, to thereby hydrolyze completely said surfactant and water-soluble polymerization initiator at a temperature not exceeding 95.degree. C.

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: To improve chip resistance of an alkyd-type electro-depositable coating composition, there may be added to the composition an ethylenically unsaturated, addition-polymerizable monomer or oligomer having a substantially linear backbone, having a molecular weight of at least about 150, and being reactive with fatty acid unsaturation of the alkyd.

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: A process for preparing polymer non-aqueous dispersions to be formulated together with a binder component in coating compositions, which comprises the steps of: (1) emulsion polymerizing a hydroxy group containing .alpha.,.beta.-ethylenically unsaturated monomer, a polyfunctional .alpha.,.beta.-ethylenically unsaturated monomer and an .alpha.,.beta.-ethylenically unsaturated monomer different therefrom by using a water-soluble polymerization initiator, preferably a persulphate, in a soap free system or in the presence of an ester group containing anionic or cationic surfactant; adding an organic solvent, preferably comprising an amphipathic organic solvent, to a resultant polymer aqueous dispersion; and then adding a basic compound catalyst when anionic surfactant is used or an acidic compound catalyst when the cationic surfactant is used, to thereby hydrolyze completely said surfactant and water-soluble polymerization initiator at a temperature not exceeding 95.degree. C.

Abstract: A process for preparing unsaturated nitrogen containing acids such as acrylamidoglycolic acid utilizes a catalyst free route and low pH conditions. An unsaturated amide such as acrylamide is reacted with an aldehyde acid such as acid in an aqueous environment. The unsaturated nitrogen containing acids are typically produced in solution form and can be utilized as such.

Abstract: Water in oil dispersions of hydrophilic polymers based on acrylic acid partially or totally converted into the salt form with ammonia, which dispersions contain:(a) 65 to 75% of an aqueous dispersed phase, 35 to 50% of which is a hydrophilic copolymer, having a molecular weight greater than 3.times.10.sup.6, based on 0 to 50% acrylamide and 0.008 to 0.1% bisacrylamidoacetic acid partially or totally converted into the salt form with ammonia;(b) 3 to 7% of an emulsifying system, having overall an HLB value greater than 7,(c) the remainder (up to 100%) being an oil phase.

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: An aqueous emulsion copolymer of monoethylenically unsaturated monomers which provide a copolymer having a glass transition temperature below 20.degree. C., is modified to include from about 0.3% to about 10% of a monoethylenically unsaturated copolymerizable polyether containing a chain of from about 6 to about 150 C.sub.2 -C.sub.4 oxyalkylene groups, the terminal hydroxy group provided by said chain of oxyalkylene groups being capped with a monofunctional hydrophobic group. These polyethers improve the brush drag of paints made with the emulsion copolymers, and in some instances the leveling is simultaneously improved.

Abstract: This invention relates to water insoluble copolymer aqueous dispersions stabilized by multiple carboxylic acid functional comonomer residues against shear-induced coagulation. These copolymer dispersions are useful as pressure sensitive adhesives, and as binders for textiles, paper, non-woven materials, and coatings.

Abstract: A resinous emulsion is prepared by copolymerizing .alpha.,.beta.-ethylenically unsaturated monomers and a crosslinking monomer which is at least difunctional, in an aqueous medium in the presence of a resin having an amphoionic group of the formula: ##STR1## wherein R represents substituted or unsubstituted C.sub.1 -C.sub.6 alkylene or phenylene and Y is --COOH or --SO.sub.3 H, or in the presence of a resin having the above said amphoionic group and a polymerizable .alpha.,.beta.-unsaturated bonding. The thus obtained emulsion is useful for the obtainment of crosslinked polymer microparticles to be incorporated in a high solid coating composition or for the preparation of aqueous coating composition because of having contained no harmful emulsifier or surfactant.

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: An improved cationic thermosetting latex, coating compositions prepared therefrom, articles coated therewith, and the process for preparing the same are disclosed. Compositions of the instant latices formulated with isocyanate curing agents display improved cure; the improvement residing in selection of surfactants, with particular reference to their gegen-ions, which are used therein.

Abstract: The present invention relates to aqueous dispersions or solutions of oligomers or polymers, polycondensates or polyaddition products containing from about 2 to 200 milliequivalents per 100 g of solids, of incorporated ammonium groups obtained by neutralizing incorporated tertiary nitrogen atoms with organic acids, characterized in that the organic acids on which the ammonium groups are based are acids which lose their acid character at temperatures in the range from about 20.degree. to 200.degree. C. in the absence of water without releasing corrosive decomposition products. The present invention further relates to a process for the production of these novel aqueous dispersions or solutions and to their use.