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Graft polymer dispersion having a third monomer and polyurethane foams having a reduced tendency to shrink prepared thereby
Graft polymer dispersion having a third monomer and polyurethane foams having a reduced tendency to shrink prepared thereby
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机译:具有第三单体的接枝聚合物分散体和由此制备的具有降低的收缩趋势的聚氨酯泡沫
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摘要
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 C.sub.2 -C.sub.6 alkyl methacrylate.
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