Patent ID: 9273236
Filing Date: 2016-03-01
CPC Classification: C08F,C08L,C09J,Y10T

Claim Text:
1. An aqueous polymer dispersion comprising polymer particles having a content of a polymer of at least 55% by weight, based on a total weight of the dispersion, wherein the polymer comprises, in reacted form, ethylenically unsaturated monomers M and has a glass transition temperature of below −10° C., the polymer particles in the dispersion have a polymodal particle size distribution, 10% to 60% by weight of the polymer particles have a particle diameter in a range from 70 to 180 rim and 40 to 90% by weight of the polymer particles have a particle diameter in a range from 180 to 350 nm, and wherein the particle size distribution has a polydispersity index Q of from 0.5 to 1.5: in which d d d and all particle diameters are determined by centrifuging, and wherein the monomers M, based on a total amount of the monomers M, comprise at least 65% by weight of at least one C