申请人:COVESTRO DEUTSCHLAND AG
公开号:US11345775B2
公开(公告)日:2022-05-31
The present invention relates to a method for producing polyurethane foams by reacting an isocyanate component with an isocyanate-reactive component comprising at least one polyethercarbonate polyol, the reaction taking place in the presence of a component K selected from one or more compounds from the group consisting of K1 esters of mono- or polybasic carboxylic acids whose (first) dissociation has a pKa of 0.5 to 4.0, K2 mono-, di- and polysulfonates of mono- and polyfunctional alcohols, and K3 one or more compounds from the group consisting of K 3.1 esters of phosphoric acid, phosphonic acid, phosphorous acid, phosphinic acid, phosphonous acid and phosphinous acid, these esters each containing no P—OH group, K3.2 oligomeric alkyl phosphates of the general formula (II), where a is an integer from 1 to 10, b is an integer from 1 to 10, R1, R2, R3 and R4 are alkyl groups having at least one carbon, and R1, R2, R3 and R4 are alike or, independently of one another, different, and R5 is a linear alkylene group having at least two carbons or is a branched alkylene group having at least three carbons, and K3.3 comprises oligomeric alkyl phosphates of the general formula (III), where a is an integer from 1 to 10, b is an integer from 1 to 10, R1, R4 and R5 are linear alkylene groups having at least two carbons or are branched alkylene groups having at least three carbons, and R1, R4 and R5 are alike or, independently of one another, different, and R2 and R3 are alkyl groups having at least one carbon, and R2 and R3 are alike or, independently of one another, different. The invention also relates to polyurethane foams produced by the method of the invention and to the use thereof.
本发明涉及一种生产聚
氨酯泡沫塑料的方法,该方法是将
异氰酸酯组分与包含至少一种聚醚
碳酸酯多元醇的
异氰酸酯反应组分进行反应,反应是在组分 K 的存在下进行的,该组分 K 选自 K1 单或多基
羧酸酯(其(第一)离解 pKa 为 0.5 至 4.0)、K2 单官能醇和多官能醇的单
磺酸盐、二
磺酸盐和多
磺酸盐,以及 K3 K 3.1 单或多基
羧酸酯(其(第一)离解 pKa 为 0.5 至 4.0)所组成的组中的一种或多种化合物。5 至 4.0,K2 单官能醇和多官能醇的单
磺酸盐、双
磺酸盐和多
磺酸盐,以及 K3 由 K3.1
磷酸酯、
膦酸、
磷 酸、
亚磷酸、
亚磷酸和
亚磷酸组成的组中的一种或多种化合物(这些酯均不含 P-OH 基团)、K3.2 通式(II)的低聚烷基
磷酸酯,其中 a 是 1 至 10 的整数,b 是 1 至 10 的整数,R1、R2、R3 和 R4 是至少具有一个碳的烷基,R1、R2、R3 和 R4 相同或各自不同,R5 是至少具有两个碳的直链亚烷基或至少具有三个碳的支链亚烷基,K3.3 包括通式(III)的低聚烷基
磷酸酯,其中 a 是 1-10 的整数,b 是 1-10 的整数,R1、R4 和 R5 是具有至少两个碳的直链亚烷基或具有至少三个碳的支链亚烷基,且 R1、R4 和 R5 相同或互不相同,R2 和 R3 是具有至少一个碳的烷基,且 R2 和 R3 相同或互不相同。本发明还涉及用本发明方法生产的聚
氨酯泡沫及其用途。