公开(公告)号：BR9711394A

公开(公告)日：1999-08-17

申请号：BR9711394

申请日：1997-09-05

Applicant: BASF AG

Inventor： ZHAO CHENG-LI ,  ROSER JOACHIN ,  WISTUBA ECKEHARD

IPC: C08L51/06 ,  C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/44 ,  C08F265/00 ,  C08F265/06 ,  C08F285/00 ,  C08F291/00 ,  C09D151/00 ,  C09J151/00 ,  D21H19/58

Abstract: A process for preparing aqueous polymer dispersions comprises first of all subjecting ethylenically unsaturated monomers to free-radical aqueous emulsion polymerization to prepare an aqueous dispersion of a polymer 1 having a glass transition temperature Tg1, then dissolving further, comparatively hard monomers in the dispersed particles of the polymer 1, and subsequently carrying out free-radical polymerization of the monomers dissolved in the particles.