发明授权
US4590226A Polyether polyols containing hydroxymethyl substituted 1,3-dioxane for use in polyurethanes 失效
含羟甲基取代的1,3-二恶烷的聚醚多元醇用于聚氨酯

Polyether polyols containing hydroxymethyl substituted 1,3-dioxane for
use in polyurethanes
摘要:
A polyether polyol having an average hydroxyl value in the range 400 to 650 mgKOH/g which is a alkoxylated derivative of a polyhydric alcohol being itself a single compound or a mixture of compounds according to the general formula (I) ##STR1## where R.sup.1 is --H, --CH.sub.3 or OCH.sub.3R.sup.2 is --H, --CH.sub.2 OH or --CH.sub.2 C(CH.sub.2 OH).sub.3The preparation of polyurethanes, including rigid foams, using these polyols, is also disclosed.
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