Abstract: A polymeric surfactant comprises the reaction product of ethylentcally unsaturated monomers at least 40 percent by weight of which are acid group containing monomers, including a combination of both acrylic acid and methacrylic acid, at least a portion of the acid groups being neutralized by a base. Also disclosed is an aqueous acrylic latex made by polymerizing a second polymer from ethylenically unsaturated monomers in the presence of said polymeric surfactant, whereby the latex comprises polymeric particles containing two polymers. The latex may be used to advantage in very low V.O.C. coatings that may be spray applied.

Abstract: Rubber articles are coated with a powder-free coating; the power-free/non-tacky coating comprises a copolymer formed by the sequential polymerization of two mixtures of monomers comprising styrene, alkyl acrylates, acrylic acid, methacrylic acid, and a silicone oligomer. The sequential polymerization of the two monomer mixtures produces a core copolymer surrounded by a shell copolymer, in which the two copolymers have differing glass transition temperatures.

Abstract: A storage stable, flowable aqueous dispersion of an amphoteric water-soluble polymer with good handling as well as a method of manufacturing the same are provided. Such an aqueous dispersion can be effectively used for flocculating and/or dehydrating sludge, or for separating and treating oil-containing industrial waste water, as a drainage aid, a retention aid, or recovering substances from white water in the papermaking process. The aqueous dispersion of an amphoteric water-soluble polymer is obtained by polymerizing a mixture of monomers comprising a specific cationic monomer and an anionic monomer as essential components wish stirring in an aqueous salt solution incapable of dissolving the produced polymer and in the presence of a polymer electrolyte dispersant soluble in said aqueous salt solution.

Abstract: A coating composition for use as an overcoat or heat resistant coating having improved heat resistance comprised of an aqueous latex polymer emulsion and a water soluble or water-dispersible resin which containing a sufficient number of either (a) carboxyl groups or (b) carboxyl and amide groups which will form at least one anhydride ring or imide, in the presence of sufficient heat, and release water molecules, with the latex polymer having a particle size of less than about 1600 Angstroms and containing an effective amount of a nitrogen containing volatile base to achieve a pH of greater than about 7.5 to keep the resin solubilized or dispersed.

Abstract: A paper coating composition which comprises as a binder a latex of a copolymer (referred to hereinafter the particle A) consisting of (a) 20 to 80% by weight of an aliphatic conjugated diene monomer unit, (b) 0.5 to 10% by weight of an ethylenically unsaturated carboxylic acid monomer unit and (c) 20 to 79.5% by weight of a unit of another monomer copolymerizable with the above components (a) and (b) and having two glass transition points in the range of from -100.degree. C. to 50.degree. C. the difference between the two transition points being at least 5.degree. C.

Abstract: A curing composition for reinforcing an inorganic oxide material or a flawable base is disclosed. The composition comprises a curing compound emulsified and dispersed in water with or without the aid of an emulsifier or a water-soluble high polymer. The composition has excellent preservation stability and is free from the risk of fire or environmental pollution. The process for reinforcing an inorganic oxide material or a flawable base using the composition is also disclosed.

Abstract: The present invention relates to water-dilutable emulsion polymers prepared by multistep emulsion polymerization. To this end,(a1) 0.5 to 5.0% by weight of ethylenically unsaturated monomers containing carboxyl groups, and(a2) from 0.5 to 2.5% by weight of olefinically unsaturated carboxamides,where a total of from 1.0 to 8.0% by weight of hydrophilic ionic and hydrophilic nonionic olefinically unsaturated monomers are employed, and(b) from 92.0 to 99.0% by weight of further ethylenically unsaturated monomers containing no further functional groups,are polymerized in the first step of the emulsion polymerization, where the total amount of monomers in the first step is 100% by weight, and exclusively olefinically unsaturated monomers containing no further functional groups are polymerized in the second step of the emulsion polymerization, and the weight ratio between the monomers polymerized in the first step and the monomers polymerized in the second step is from 30-80%:20-70% by weight.

Abstract: A process for the preparation of a synthetic resin dispersion stabilized by a protective colloid employing at least one initiator and based on a polymer of (a) a first monomer of at least one ester of acrylic acid or methacrylic acid and an alcohol containing 1 to 22 carbon atoms; and optionally, (b) a second monomer which can be copolymerized with the first monomers. The process comprises introducing at least 50% of the monomers based on the total weight of the monomers, at least 50% of the protective colloid based on the total weight of the protective colloid, and up to 50% of the initiator based on the total weight of the initiator into a reaction vessel to form an aqueous emulsion. Any remaining monomers and protective colloid and at least 50% of the initiator based on the total weight of the initiator are then added to the reaction vessel at a temperature of 30.degree. to 100.degree. C.

Abstract: This invention discloses a process for preparing a latex which is particularly beneficial for utilization in manufacturing high performance masking tape, which comprises the sequential steps of (1) terpolymerizing a vinyl aromatic monomer, an alkyl acrylate monomer, and an alkyl propenoic acid monomer in an aqueous polymerization medium by free radical polymerization to produce a seed polymer latex; (2) neutralizing the seed polymer latex to a pH of about 6 to about 9 by the addition of an alkali; (3) adding additional vinyl aromatic monomer and alkyl acrylate monomer to the neutralized seed polymer latex; and (4) allowing the additional vinyl aromatic monomer and alkyl acrylate monomer to polymerize in a second polymerization step to a solids content of about 30% to about 50% to produce the latex which is particularly beneficial for utilization in manufacturing high performance masking tape; wherein about 30 percent to about 50 percent of the total amount of vinyl aromatic monomer polymerized is polymerized

Abstract: An erasable ink composition contains an aqueous dispersion of water-insoluble polymer-encapsulated colorant obtained from the emulsion polymerization of at least one hydrophobic emulsion-polymerizable monomer with at least a portion of the monomer containing colorant dissolved therein. The ink is intended for use in any of a variety of marking instruments, in particular, a ball-point pen.

Abstract: This invention relates to improved water-soluble acrylic latex compositions. In particular, this invention relates to acrylic latex compositions produced by reacting monomers with water-soluble support resins derived from reacting a modified rosin with an alkanolamine containing at least one secondary amine and at least one hydroxyl group. These acrylic latex compositions can be utilized to produce water-based flexographic and gravure ink formulations.

Abstract: An aqueous crosslinkable coating composition comprising an aqueous dispersion of: (A) at least one copolymer, said copolymer being obtainable or derived from the addition polymerization of 2 or more olefinically unsaturated monomers and bearing lateral carboxyl groups which are provided at least in part by polymerized units in said copolymer of a monomer of formula: CH.sub.2 .dbd.CR.sup.1 --Q--CO.sub.2 H, where R.sup.1 is H or lower alkyl of 1 to 5 carbon atoms and Q is a non carboxy-containing spacer group providing a spacer chain of a least 3 atoms, and (B) at least one carboxyl-reactive material for providing crosslinking during and/or after coating formation from the composition in which the polymer-bound carboxyl groups provided by the monomer of formula take part, and wherein the components (A) and (B) are provided by different and/or the same substance(s).

Abstract: A method is provided for the preparation of finely divided solid spherical polymer beads having an average particle size between about 0.1 and about 10 .mu.m and having a glass transition temperature of at least 40.degree. C. The method is a one step reaction in an aqueous reaction medium and said polymer beads are formed by the simultaneous reaction of1) a silane monomer comprising an .alpha.,.beta.-ethylenically unsaturated group,2) at least one .alpha.,.beta.-ethylenically unsaturated monomer, different from said silane monomer, capable of forming a polymer that is soluble in the monomer(s) present in said aqueous solvent mixture but which is insoluble in water3) a free radical-forming polymerization initiator that is soluble in the aqueous solvent mixture, and4) a graft-polymerizable polymer containing hydrophilic groups, and capable of forming a graft polymer that remains soluble in the aqueous reaction mixture.

Abstract: A waterborne coating composition contains a base neutralized, stable, aqueous dispersion of a hydroxyl functional acrylic polymer containing less than 1 percent acid, having a number average molecular weight ranging from about 500 to about 4500 and having an acid value of at least about 1.5 and no greater than about 10 is prepared from a vinyl monomer component containing at least about 50 percent 2-hydroxyethyl acrylate and at least one other comonomer. The proportion of each monomer is selected so that the resultant polymer forms stable dispersion in water without externally added surfactant. The coating composition also contains a crosslinking agent adapted to react with the hydroxyl groups of the acrylic polymer.

Abstract: A two-component 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 upon neutralization with acid; and (b) a polyisocyanate component containing free isocyanate groups. Also disclosed is the method of emulsifying component (b) into component (a).

Abstract: An aqueous polymer dispersion with a solids volume concentration of at least 50% by volume is obtainable by polymerizing monomers by the method of free radical aqueous emulsion polymerization with the addition of at least one fine and at least one coarse aqueous starting polymer dispersion.

Abstract: The invention concerns a process for the production of block copolymers or aqueous dispersions and emulsions thereof, whereby azo macroinitiators are reacted with radical-polymerizable monomers or a mixture of several radical-polymerizable monomers. The azo macroinitiators are obtained by reacting simple reactive azo compounds with prepolymers with a molecular weight between 400 and 20000, which possess at least 2 functional groups, e.g. polyurethanes or polyesters.The aqueous block copolymer dispersions and emulsions produced according to the invention are suitable for use for the production of paints, adhesives etc.

Abstract: A splicing tape adhesive comprising 97% to 45% by weight of an emulsion polymer formed of from about 80% to 90% by weight of monomers comprising a major portion of at least alkyl acrylate containing from 4 to about 8 carbon atoms in the alkyl group and from about 20% to 10% by weight of a least one carboxylic acid, said emulsion polymer formed in the presence of anionic and nonionic surfactants to provide a polymer having a glass transition temperature of -15.degree. to -50.degree. C. in the presence of a chain transfer agent, from about 25% by weight of an acrylic polymer having a glass transition of less than -50.degree. C. and about 3% to about 20% by weight plasticizer.

Abstract: Film-forming cosmetic composition containing, in a suitable cosmetic carrier, at least one grafted chlorinated copolymer resulting from the grafting of 5 to 20% of a chlorinated polyolefin with 80 to 95% of acrylic, styrene and/or vinyl type unsaturated monomers. Said monomers can be selected from oleophilic monomers taken alone or in mixture in a proportion of 0 to 95% and hydrophilic monomers taken alone or in mixture, in a proportion of 0 to 40%. The composition is useful in hair setting formulations or else in the preparation of nail varnish.

Abstract: The invention relates to basecoats for the production of paint systems of the basecoat-clearcoat type, which comprise a water-thinnable polyacrylate resin obtainable by polymerizing in a first stage in an organic solvent ethylenically unsaturated monomers free from carboxyl groups and, after at least 80% by weight of these monomers have reacted, polymerizing in a second stage monomers containing carboxyl groups and neutralizing the polyacrylate resin obtained in this way.

Abstract: A water-dispersible, inherently tacky pressure-sensitive adhesive comprising a tacky emulsion polymer formed of from about 80% to 90% by weight of monomers comprising a major portion of at least alkyl acrylate containing from 4 to about 8 carbon atoms in the alkyl group and from about 20% to 10% by weight of a mixture of acrylic acid with at least an oleophilic unsaturated carboxylic acid, said emulsion polymer formed in the presence of anionic and nonionic surfactants to provide a polymer having a glass transition temperature of -15.degree. to -50.degree. C. A sufficient amount of chain transfer agent is employed to provide an emulsion polymer which when coated on a repulpable paper substrate enables recovery of paper fibers substantially free of adhesive under conditions of TAPPI Useful Method 213 and/or 204, and resistant to loss of adhesive properties on exposure to high humidity.

Abstract: Autocrosslinking aqueous dispersions characterized by an MFT of from 0.degree. to about 50.degree. C. include at least one carbonyl-containing soft latex polymer having an MFT of below about 20.degree. C., at least one hard latex polymer having an MFT of above about 25.degree. C., and at least one polyfunctional carboxylic hydrazide. The aqueous polymer dispersions are used as binders for non-blocking, scratch-resistant and chemical-resistant coatings and as binders for clear coat and pigmented coating systems.

Abstract: A fluorescent color hard lead for color pencils and marking crayons includes a matrix comprised of at least one material selected from the group consisting of a fatty acid metal salt, a fatty acid ester, and a wax; a binder; and a filler which is aluminum silicate; and particles which are intimately mixed into the matrix and which are comprised of at least one synthetic polymer and at least one fluorescent dye with which the at least one synthetic polymer is dyed, the at least one synthetic polymer being selected from the group consisting of homopolymers from one monomer and copolymers from at least two monomers, the monomers being selected from the group consisting of acrylic acids, acrylates, acrylonitriles, and styrene, which monomers have been polymerized in an aqueous solution into which is added the at least one fluorescent dye to provide a dispersion, which dispersion is added to the matrix directly, wherein the dyed particles are uniformly distributed throughout the matrix whereby the fluorescent colo

Abstract: The invention relates to a process for coating vehicle bodies in which an aqueous coating containing as the binder a combination of a water-dilutable polyurethane resin, a water-dilutable polyester resin and an aminoplast resin is employed as the stone-chip intermediate primer and/or filler.

Abstract: The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier, a pigment, and, preferably, a graft polymer having a polyacrylic acid backbone and hydrophobic side chains.

Abstract: A water-soluble cationic (co)polymer dispersion prepared by the polymerization of a specified cationic quaternary monomer, which is obtained by quaternization by use of an alkyl halide, optionally with another cationic monomer and/or (meth)acrylamide, the polymerization being carried out in a salt solution which does not dissolve the resulting (co)polymer, and in the presence of a specific cationic polymer dispersant which is soluble in the salt solution, and its use as a flocculant or a paper chemical are provided.

Abstract: Gels for thermotropic layers, obtainable by irradiation of a mixture comprisinga) an uncrosslinked polymer,b) monomers capable of free-radical polymerization andc) water or an organic solvent or mixtures thereof, with high-energy light.

Abstract: Aqueous emulsions of grafted polymer compositions are provided. The grafted component of these compositions has two or more polymeric substituents. The aqueous emulsions of grafted polymer compositions are particularly useful as cement modifiers.

Abstract: A two-phase acidic aqueous composition for use as a neutralization layer is generally comprised of a water soluble aqueous phase and a water insoluble particle phase. The particle phase generally comprises a copolymer having recurring units of an organic acid monomer and an organic ester monomer. The aqueous phase comprises a water soluble polymer having recurring units of at least an organic acid monomer. The organic acid monomers selected for the aqueous phase polymer are capable of interacting with the particle phase polymers such that the particle phase polymers are brought into stabilizing, intimate association with the aqueous phase.

Abstract: Provided are polymers produced by the process of polymerizing monomers comprised of:(i) an aromatic monomer having the formula CH.sub.2 .dbd.C(R.sup.1)(R.sup.2) wherein R.sup.1 is an aromatic group having from 6 to 10 carbon atoms, and R.sup.2 is hydrogen or methyl,(ii) a long-chain aliphatic monomer having the formula CH.sub.2 .dbd.C(C(O)OR.sup.3)(R.sup.4) wherein R.sup.3 is a fatty alkyl group having from 12 to 22 carbon atoms and R.sup.4 is hydrogen or methyl,(iii) a hardening monomer having the formula CH.sub.2 .dbd.C(C(O)OR.sup.5)(R.sup.6) wherein R.sup.5 is a hardening alkyl group having from 1 to 4 carbon atoms and R.sup.6 is hydrogen or methyl, and(iv) a plasticizing monomer having the formula CH.sub.2 .dbd.C(C(O)OR.sup.7)(R.sup.8) wherein R.sup.7 is a plasticizing alkyl group (preferably having from 3 to 10 carbon atoms) and R.sup.

Abstract: A splicing tape adhesive comprising 97% to 45% by weight of an emulsion polymer formed of from about 80% to 90% by weight of monomers comprising a major portion of at least alkyl acrylate containing from 4 to about 8 carbon atoms in the alkyl group and from about 20% to 10% by weight of a least one carboxylic acid, said emulsion polymer formed in the presence of anionic and nonionic surfactants to provide a polymer having a glass transition temperature of -15.degree. to -50.degree. C. in the presence of a chain transfer agent, from about 25% by weight of an acrylic polymer having a glass transition of less than -50.degree. C. and about 3% to about 20% by weight plasticizer.

Abstract: A water-dispersible, inherently tacky pressure-sensitive adhesive comprising a tacky emulsion polymer formed of from about 80% to 90% by weight of monomers comprising a major portion of at least alkyl acrylate containing from 4 to about 8 carbon atoms in the alkyl group and from about 20% to 10% by weight of a mixture of acrylic acid with at least an oleophilic unsaturated carboxylic acid, said emulsion polymer formed in the presence of anionic and nonionic surfactants to provide a polymer having a glass transition temperature of -15.degree. to -50.degree. C. A sufficient amount of chain transfer agent is employed to provide an emulsion polymer which when coated on a repulpable paper substrate enables recovery of paper fibers substantially free of adhesive under conditions of TAPPI Useful Method 213 and/or 204, and resistant to loss of adhesive properties on exposure to high humidity.

Abstract: A water-dispersible, inherently tacky pressure-sensitive adhesive comprising a tacky emulsion polymer formed of from about 80% to 90% by weight of monomers comprising a major portion of at least alkyl acrylate containing from 4 to about 8 carbon atoms in the alkyl group and from about 20% to 10% by weight of a mixture of acrylic acid with at least an oleophilic unsaturated carboxylic acid, said emulsion polymer formed in the presence of anionic and nonionic surfactants to provide a polymer having a glass transition temperature of -15.degree. to -50.degree. C. A sufficient amount of chain transfer agent is employed to provide an emulsion polymer which when coated on a repulpable paper substrate enables recovery of paper fibers substantially free of adhesive under conditions of TAPPI Useful Method 213 and/or 204, and resistant to loss of adhesive properties on exposure to high humidity.

Abstract: Faux finishes are produced without need for artistic manipulations of coating materials by applying a layer of one or more unique aqueous emulsions to a substrate surface and, while the layer is still wet, applying thereto scattered portions of one or more special blending solvent mixtures, allowing such portions to interact with the color mixture layer to automatically form a faux finish pattern and then allowing the resulting faux finish to dry.The preferred emulsions have the following weight percentage composition:______________________________________ acrylic polymer 5%-15% propylene glycol 20%-75% colorant 0%-60% non-essential adjuvants 0%-10%. ______________________________________The blending solvent mixtures have the following weight percentage composition: ______________________________________ isopropyl alcohol 10%-30% ethylene glycol monobutyl ether 10%-30% water 30%-60% acrylic latex 5%-30%.

Abstract: Disclosed are aqueous crosslinked polymer particles which provide excellent properties and paint workability. Aqueous crosslinked polymer particles have 20 to 200 nm of an average particle size (De), measured by a transmission electron microscope after dyeing with uranyl acetate, and also have 0.5 to 0.9 of an average roundness (R) represented by the equation:R=(Lc/L).sup.2wherein Lc is a perimeter of a circle, having the same area as that of a particle measured by the transmission electron microscope, and L is a perimeter of a particle measured actually. A process for producing aqueous crosslinked polymer particles is also disclosed.

Abstract: A highly weather-resistant, single package, cross-linkable emulsion using an emulsion polymer (X) obtained by emulsion polymerization, in an aqueous medium, of polymerizable monomer ingredients (II) comprising (a) from 0.1 to 10% by weight of a polymerizable UV-ray stable monomer, (b) from 5 to 99.4% by weight of cycloalkyl group-containing polymerizable monomer, (c) from 0.5 to 40% by weight of a polymerizable monomer which contains the groups having reactivity with carboxyl groups and (d) from 0 to 94.4% by weight of other polymerizable monomer, in which the amount of the polymerizable monomers (a), (b), (c) and (d) in total is 100% by weight, by using a water soluble or water dispersible polymer (I) having a terminal alkyl group with an acid value of 200 or greater obtained by polymerizing a polymerizable monomer ingredient (A) containing an unsaturated carboxylic acid as an essential ingredient under the presence of an alkyl mercaptan of 6 to 18 carbon atoms.

Abstract: The present invention is directed to an encapsulated toner for heat-and-pressure fixing having a heat-fusible core material containing at least a thermoplastic resin and a coloring agent and a shell formed thereon so as to cover the surface of the core material. An amorphous polyester is used as the main component of the shell, and the amount of the amorphous polyester is normally 3 to 50 parts by weight, based on 100 parts by weight of the core material. The encapsulated toner of the present invention is excellent in offset resistance, fixable even at a low temperature and excellent in blocking resistance when it is used for heat-and-pressure fixing using a heat roller.

Abstract: A waterborne latex polymer composition having latex particles comprising (1) about 25 to about 75 weight percent of a first monomer, wherein the first monomer is at least one free-radically polymerizable long chain alkyl (meth)acrylate monomer; (2) about 75 to about 25 wt % of a second monomer, wherein the second monomer is a short alkyl chain (meth)acrylate monomer, wherein the alkyl group contains less than about 12 carbon atoms and the second monomer may be a mixture comprising; i) none, one or more (meth)acrylic acid monomers; ii) none, one or more vinyl nitrile monomers; and iii) none, one or more (meth)acrylic ester monomers, with the provisio that the second monomer mixture comprises at least one of (meth)acrylic acid monomer, vinyl nitrile monomer, and (meth)acrylic ester monomer and a method of making the latex particles.

Abstract: Method of producing sterically stabilized polymer dispersions by polymerizing ethylenically unsaturated monomers in an aqueous phase (as a dispersion medium) in the presence of an initiator system and a water-soluble macromonomer which is an esterification product of maleic acid, fumaric acid, maleic anhydride, or mixture thereof and polyalkylene glycols and/or monoalkyl ether of polyalkylene glycol, having a degree of esterification between 50% and 100%. The dispersions obtained according to this method possess high electrolyte stability, shear stability, and frost stability, even without addition of conventional emulsifiers and emulsification adjuvants.

Abstract: The invention relates to a process for the production of a multicoat coating in which the aqueous topcoat composition contains a water-thinnable polyacrylate resin which has a hydroxyl value of 40 to 200, an acid value of 20 to 100 and a glass transition temperature (T.sub.G) of -40.degree. C. to +60.degree. C., and can be prepared by adding a mixture (I) of a (meth)acrylic acid ester, a copolymerizable hydroxyl-containing monomer and, if appropriate, a further ethylenically unsaturated monomer to an organic solvent and carrying out free-radical polymerization and adding, at the end of the addition of the mixture (I), a mixture of a monomer containing carboxyl groups and a monomer free from carboxyl groups and continuing the polymerization.

Abstract: The invention relates to basecoats for the production of finishes of the basecoat/clearcoat type which comprise a water-thinnable polyacrylate resin which can be obtained by polymerizing, either successively or in part amounts, monomers containing carboxyl groups and monomers free from carboxyl groups in an organic solvent to form a polyacrylate resin which is neutralized, at least partially, and dispersed in water.

Abstract: An aqueous polymer dispersion having a solids volume concentration of 50% by volume or more is obtainable by polymerizing radical polymerizable monomers other than vinyl or vinylidene halides by the method of free radical aqueous emulsion polymerization with the addition of an aqueous starting polymer dispersion having a certain diameter distribution of the starting polymer particles present therein by the stream addition process.

Abstract: An aqueous polymer dispersion with a final solids volume concentration of at least 50% by volume is obtainable by polymerizing at least one radical polymerizable monomer by the method of free radical aqueous emulsion polymerization with the addition of an aqueous dispersion of a starting polymer.

Abstract: A process for producing a water-base resin dispersion which contains resin particles having a very fine particle diameter as fine as 25 to 100 nm and gives a coating composition excellent in water resistance, alkali resistance and resistance to whitening in hot water, the process being very stable in emulsification and comprising dropwise adding a mixture containing 30 to 100% by weight of said radical-polymerizable ethylenically unsaturated monomer and 20 to 90% by weight of said reactive emulsifier and water to a reactor containing 0 to 70% by weight of said radical-polymerizable ethylenically unsaturated monomer and 10 to 80% by weight of said reactive emulsifier and radical-polymerizing the radical-polymerizable ethylenically unsaturated monomer in the presence of an organic polymerization initiator.

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: Aqueous binders for liquid coating agents which contain a film-forming, aqueous plastic dispersion and a crosslinking component can be stored in ready-to-use form and quickly harden after being processed into a coating, at room temperature or a temperature just slightly above, forming a hard, dry, crosslinkable film. The plastic dispersion is an emulsion polymer with polymerized units of an ethylenically-unsaturated, radically polymerizable monomer with an alkylene urea side group. The crosslinking agent contains at least two, possibly protected, aldehyde groups.

Abstract: An aqueous polymer dispersion with a final solids volume concentration of at least 50% by volume is obtainable by polymerizing at least one radical polymerizable monomer by the method of free radical aqueous emulsion polymerization with the addition of an aqueous dispersion of a starting polymer.

Abstract: Hydrophilic composite polymer articles are provided which comprise at least one hydrophilic polymer in a powder form and one or more liquid components of which at least one is hydrophilic and which can be polymerized with said hydrophilic polymer. This composition is produced from a homogeneously mixed paste which can be molded or cast into a desired shape which will subsequently set. The resulting article has a shape-retaining, non-tacky flexible consistency which allows the shape to be further modified, if necessary.Such object can be then cured by any of the conventional curing methods to retain its shape permanently. The final properties of the composite can be tailored to suit the final application by using fillers or modifiers. In the medical field, such articles can be utilized as a sustained release devices as they can be loaded with the desired therapeutic drugs. These articles can be made non-toxic and biocompatible and used as prosthetic devices.

Abstract: A stable, aqueous fluorocopolymer dispersion prepared by aqueous dispersion polymerization of a) a dispersed phase containing a fluoroolefin monomer component and a vinyl ether monomer component in the presence of b) a base neutralized, stable aqueous dispersion of a polymeric dispersant having an acid value of at least 1.5 mg KOH/gram not exceeding about 35 mg KOH/gram and the amount of neutralizing base does not exceed about 10 percent based on resin solids of the dispersant. The acid value is adapted to provide a stable dispersion of the fluorocopolymer in water without externally added surfactant.Thermoplastic and thermosetting coating compositions can be prepared from these aqueous fluorocopolymer dispersions.

Abstract: A process for producing a stable aqueous adhesive polymer emulsion which comprises(a) preparing a substantially alkali insoluble, low molecular weight carboxylate-containing first stage polymer by aqueous emulsion polymerization under acidic conditions, the first stage polymer containing 30-55 equivalent % carboxylic acid monomers and having a Mn<15,000 and a Tg<25.degree. C.,(b) conducting a second emulsion polymerization in the presence of the first stage polymer under acid or basic conditions to produce a hydrophobic second stage polymer, and(c) adjusting the resulting two stage polymer emulsion to a pH<4.