Polymer particles having select pendant groups and composition prepared therefrom

摘要

A polymer composition comprises multistage polymer particles. Each of polymer particles comprises a polymer (A) and polymer (B). The polymer (A) comprises a polymerized unit of multiethylenically unsaturated monomer and pendant absorbing group(s). The polymer (A) and (B), each has glass transmission temperature of -60[deg]C to 35[deg]C. The polymer (B) is free of pendant absorbing group(s). A polymer composition comprises multistage polymer particles. Each of polymer particles comprises a polymer (A) and polymer (B). The polymer (A) comprises a polymerized unit of multiethylenically unsaturated monomer and pendant absorbing group(s) selected from phosphorus acid groups, phosphorus acid full-esters groups and/or polyacid side chain groups. The polymer (A) and (B), each has glass transition temperature of -60[deg]C to 35[deg]C. The polymer (B) is free of pendant absorbing group(s). The average weight ratio of polymer (A) to polymer (B) is 1:2-1:20. Independent claims are included for the following: (1) A composite particle which comprises an inorganic particle having a surface, and number of multistage polymer particles attached to the surface of inorganic particle; (2) an aqueous composition useful for preparing dried coating. The composition comprises a composite particle comprising inorganic particle and polymer particle, and a binder; and (3) multistage polymer particle comprising polymer (A) and polymer (B). The polymer (A) comprises a polymerized unit of multiethylenically unsaturated monomer and complementary functional group. The polymer (A) and (B) have glass transition temperature of -60[deg]C to 120[deg]C and -60[deg]C to 35[deg]C, respectively. The weight ratio of polymer (A) and (B) is 1:2-1:20.