发明授权
US4871783A Modified polyols and their use in the manufacture of polymer polyols 失效
改性多元醇及其在制备聚合物多元醇中的用途

Modified polyols and their use in the manufacture of polymer polyols
摘要:
Modified polyols having the formula R.sub.m SiXx.sub.4-m wherein m=1 to 3, X is an alkoxy group and at least one R group is either HS--R.sup.1 -- or HS--(SiR.sup.2.sub.2 O).sub.n -- are described. The modified polyols, when mixed with base polyol, are used in the manufacture of graft polymer polyols having low viscosity and good filtrability. The graft polymer polyol can be used in the manufacture of polyurethane foam.
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