Process for cellular polyurethane formation using tertiary amine catalyst mixtures
申请人:UNION CARBIDE CORPORATION
公开号:EP0048985A1
公开(公告)日:1982-04-07
Tertiary amine catalyst mixtures comprising at least one hydroxyalkyl piperazine, preferably 2-hydroxyethyl piperazine or 1,4-di-(2-hydroxyethyl) piperazine, and at least one other tertiary amine for increasing the processability of hydroxyalkyl piperazine in controlling the water-isocyanate reaction rate to obtain optimum performance in cellular polyurethane foam formulations and/or enhancing the compatibility of hydroxyalkyl piperazine with other foaming ingredients in flexible polyester polyurethane foam formulation; and a process for producing cellular polyurethanes, such as flexible polyester or polyether polyurethane foam and high resilience polyether polyurethane foam, by effecting the reaction of an organic polyol reactant and an organic polyisocyanate reactant in the presence of a blowing agent and said tertiary amine catalyst mixture, the resulting cellular polyurethanes exhibiting very low residual amine odor.
由至少一种羟烷基哌嗪(最好是 2-羟乙基哌嗪或 1,4-二(2-羟乙基)哌嗪)和至少一种其他叔胺组成的叔胺催化剂混合物,用于提高羟烷基哌嗪在控制水-异氰酸酯反应速率以获得最佳性能的蜂窝状聚氨酯泡沫塑料配方中的加工性能,和/或提高羟烷基哌嗪与软质聚酯聚氨酯泡沫塑料配方中其他发泡成分的相容性;以及一种生产蜂窝状聚氨酯(如软质聚酯或聚醚聚氨酯泡沫和高回弹聚醚聚氨酯泡沫)的工艺,其方法是在发泡剂和所述叔胺催化剂混合物存在下,使有机多元醇反应物和有机多异氰酸酯反应物发生反应,所得蜂窝状聚氨酯显示出极低的残留胺气味。