Rohm and Haas Company

William Rohrbach

Wei Zhang

Catherine Ann Finegan

Ozzie Moore Pressley

James Charles Bohling

Alvin Michael Maurice

Thomas Glenn Madle

Bruce Maurice Rosenbaum

Matthew Stewart Gebhard

Steven Charles Brown

Robert Joseph Pafford, Iv

David Lewis Zimmerman, Jr

Provided are polymer compositions polymer composition comprising (i) one or more multistage polymers comprising (a) a first stage polymer having a Tof &#x2212;20&#xb0; C. or lower, and (b) a final stage polymer having a Tof 50&#xb0; 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.

Polymer compositions containing phosphates

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 Tof &#x2212;20&#xb0; C. or lower, and (b) a final stage polymer having a Tof 50&#xb0; 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.

Preparation of polymer compositions containing phosphates

An organic polymer including internal pendant phosphorous acid groups at a level of &#x3e;0.25% phosphorus by weight based on the weight of said organic polymer, the phosphorus acid groups being separated from the backbone of the organic polymer by no more than 2 alkylene glycol units, the organic polymer having an acid number of from 100 to 1,000, and a Mw of from 1,000 to 75,000, wherein the organic polymer has been formed by emulsion polymerization from at least one ethylenically unsaturated monomer is provided. Compositions further including an emulsion polymer including from 0.05% to 2% phosphorous, present as pendant phosphorous acid groups, by weight based on the weight of the emulsion polymer, and, optionally, an inorganic particle are also provided as are processes related to the compositions.

Phosphorous-containing organic polymer and compositions and processes including same

A coating composition comprising aqueous dispersion of particles made from a copolymer comprising, based on the weight of the copolymer one or more monoethylenically unsaturated monomers; acid functional or anionic monomer and phosphorous-containing monomer.

Scrub and stain-resistant coating

A waterborne coating composition is provided, comprising a vinyl copolymer with an optimized level of phosphorus-containing functional groups in conjunction with at least 20% by weight of the copolymer, of ethyl acrylate, methyl acrylate or combinations thereof and one or more opacifying colorants, preferably titanium dioxide.

There is provided a process of emulsion polymerization comprising

Method of emulsion polymerization

In a first aspect of the present invention, there is provided a polymer composition comprising In a second aspect of the present invention, there is provided a mixture comprising the polymer composition of the first aspect described above and one or more matrix resin. In a third aspect of the present invention, there is provided a process for making a polymer composition comprising the steps of providing a multistage polymer latex, coagulating said multistage polymer latex, mixing said multistage polymer with an aqueous solution of an alkaline phosphate, and drying said multistage polymer to a water content of less than 1% by weight of water based on the dry weight of said multistage polymer, wherein said dried multistage polymer comprises 100 ppm or more, based on the dry weight of said multistage polymer, of phosphorous that is in the form of an alkaline phosphate.

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.

Aqueous polymer dispersions with high unsaturated flow promoter content

An improved process for preparing strong acid cation exchange resins by sulfonation of wet crosslinked copolymer in the absence of organic swelling solvents is disclosed. This process involves dewatering a crosslinked poly(vinylaromatic) copolymer to selected residual moisture levels of 3 to 35%, followed by non-solvent sulfonation, to provide strong acid cation exchange resins having enhanced physical stability and that are free of chlorinated-solvent contaminants.

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Perkasie, PA, United States of America

William Rohrbach