A graft polymer dispersion having a third monomer and polyurethane foams having a reduced tendency to shrink once prepared thereby
申请人:BASF CORPORATION
公开号:EP0664306A2
公开(公告)日:1995-07-26
There is a provided a stable low viscosity graft polymer dispersion comprising from 25 to 60 weight percent based on the total weight of the polymer dispersion of at least three ethylenically unsaturated monomers polymerized in the presence of a reaction moderator and a free radical initiator in a polyol mixture initially containing less than 0.1 moles of induced unsaturation per mole of said polyol mixture. One of the monomers in the mixture of ethylenically unsaturated monomers is a hydroxylfunctional or aminofunctional C2 - C6 alkyl methacrylate.
提供了一种稳定的低粘度接枝聚合物分散体,该分散体包含至少三种乙烯基不饱和单体,其重量占聚合物分散体总重量的 25%至 60%,这些单体在反应调节剂和自由基引发剂的存在下,在多元醇混合物中聚合而成。乙烯基不饱和单体混合物中的一种单体是羟基官能团或氨基官能团 C2 - C6 烷基甲基丙烯酸酯。