Reinforcing graft polymers made in perfluorocarbon fluids
申请人:BASF CORPORATION
公开号:EP0894812A1
公开(公告)日:1999-02-03
Substantially solid reinforcing graft polymers are prepared by polymerizing an ethylenically unsaturated monomer (or mixture of ethylenically unsaturated monomers) with a composition comprising a polyol including a positive amount up to about 1.6 equivalent weight of induced unsaturation per mole of polyol, a free radical initiator and, optionally, an effective amount of a reaction moderator in a perfluorocarbon fluid. The resulting reinforcing graft polymers are particularly useful for polyol dispersions used in the production of polyurethanes having enhanced physical properties such as load bearing or hardness, tensile strength and tear resistance for example.