Hydrocarbon blown polyurethane foam formulation giving desirable thermal insulation properties
申请人:Huntsman International LLC
公开号:US10428170B1
公开(公告)日:2019-10-01
Polyurethane/polyisocyanurate foam insulation described herein is derived from a composition that contains an organic polyisocyanate, an isocyanate reactive material containing at least about 20% by weight, based on the total weight of the composition, of an aromatic polyester polyol, a hydrocarbon blowing agent, a first catalyst selected from the group consisting of a carboxylate salt of an alkali metal, a carboxylate salt of an alkaline earth metal, a carboxylate salt of a quaternary ammonium, and combinations thereof, and a second catalyst comprising a non-reactive tertiary amine, wherein a molar ratio of the first catalyst to the second catalyst is less than about 1.25, the composition gels quickly, and the composition has an isocyanate index greater than about 175. Such an insulating foam has a ratio of thermal conductivity at 75° F. to thermal conductivity at 25° F. between about 0.98 and about 1.10.
本发明所述的聚氨酯/聚异氰酸酯泡沫隔热材料来自一种组合物,该组合物含有一种有机多异氰酸酯、一种异氰酸酯反应材料(按组合物总重量计算,至少含有约 20% 的芳香族聚酯多元醇)、一种烃类发泡剂、选自碱金属羧酸盐、碱土金属羧酸盐、季铵羧酸盐及其组合的第一催化剂, 以及由非反应性叔胺组成的第二催化剂,其中第一催化剂与第二催化剂的摩尔比 小于约 1。25,组合物能快速凝胶,组合物的异氰酸酯指数大于约 175。这种隔热泡沫在华氏 75 度时的导热系数与在华氏 25 度时的导热系数之比介于约 0.98 和约 1.10 之间。