Abstract: Provided are polymer compositions comprising (i) one or more multistage polymers comprising (a) a first stage polymer, wherein the first stage polymer comprises polymerized units derived from at least one organo-phosphorus monomers, and (b) a final stage polymer, and (ii) at least one organo-phosphorus soap in an amount of 50 ppm or more, based on the dry weight of the multistage polymer. Also provided are matrix resin compositions comprising such polymer compositions and a matrix resin.

Abstract: A composition for dispersing multilayer polymers has an oligomer prepared from at least one alkyl (meth)acrylate monomer in the presence of a chain transfer agent. The oligomer has a number average molecular weight of less than 10,000 g/mol and a glass transition temperature, Tg, as measured by DSC, less than a coagulation temperature of a composition comprising the oligomer and a multilayer polymer, wherein the coagulation temperature is based on an average particle diameter of 200 microns. A composition containing the oligomer and a multilayer polymer, such as an acrylic core-shell polymer or methacrylate butadiene styrene core-shell polymer, and a resin composition are also disclosed.

Abstract: Provided are polymer compositions polymer composition comprising (i) one or more multistage polymers comprising (a) a first stage polymer having a Tg of ?20° C. or lower, and (b) a final stage polymer having a Tg of 50° C. or higher, (ii) one or more phosphate surfactant in an amount of 50 ppm or more, based on the dry weight of the multistage polymer, and (iii) one or more alkaline phosphate in an amount of 100 ppm or more, measured as the weight of phosphorous, based on the dry weight of the multistage polymer. Also provided are matrix resin compositions comprising such polymer compositions and a matrix resin.

Abstract: Provided are processes for making a polymer composition comprising (i) providing a multistage polymer latex by emulsion polymerization in the presence of a phosphate surfactant, wherein the multistage polymer comprises (a) a first stage polymer having a Tg of ?20° C. or lower, and (b) a final stage polymer having a Tg of 50° C. or higher, (ii) coagulating the multistage polymer latex, (iii) treating the coagulated multistage polymer with an alkaline phosphate, (iv) drying the coagulated multistage polymer to a water content of less than 1 weight % based on the dry weight of the multistage polymer, wherein the weight of the dried multistage polymer comprises 100 ppm or more, based on the dry weight of the multistage polymer, of phosphorous that is in the form of an alkaline phosphate. Also provided are processes for making matrix resin compositions comprising such polymer compositions and a matrix resin.

Abstract: Provided are processes for making a polymer composition comprising (i) providing a multistage polymer latex by emulsion polymerization in the presence of a phosphate surfactant, wherein the multistage polymer comprises (a) a first stage polymer having a Tg of ?20° C. or lower, and (b) a final stage polymer having a Tg of 50° C. or higher, (ii) coagulating the multistage polymer latex, (iii) treating the coagulated multistage polymer with an alkaline phosphate, (iv) drying the coagulated multistage polymer to a water content of less than 1 weight % based on the dry weight of the multistage polymer, wherein the weight of the dried multistage polymer comprises 100 ppm or more, based on the dry weight of the multistage polymer, of phosphorous that is in the form of an alkaline phosphate. Also provided are processes for making matrix resin compositions comprising such polymer compositions and a matrix resin.

Abstract: Provided are polymer compositions polymer composition comprising (i) one or more multistage polymers comprising (a) a first stage polymer having a Tg of ?20° C. or lower, and (b) a final stage polymer having a Tg of 50° C. or higher, (ii) one or more phosphate surfactant in an amount of 50 ppm or more, based on the dry weight of the multistage polymer, and (iii) one or more alkaline phosphate in an amount of 100 ppm or more, measured as the weight of phosphorous, based on the dry weight of the multistage polymer. Also provided are matrix resin compositions comprising such polymer compositions and a matrix resin.

Abstract: An aqueous composition comprising dispersed particles comprising: at least one unsaturated flow promoter and at least one copolymer formed by the polymerization of at least one ethylenically unsaturated nonionic monomer and at least one monomer bearing a pendant functionality which can react with the unsaturated flow promoter upon drying and exposure to oxygen.