Hydroxy and amino functional pyrrolizidine catalyst compositions for the production of polyurethanes
申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0668303A1
公开(公告)日:1995-08-23
A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, cell stabilizer and a catalyst composition consisting essentially of a pyrrolizidine of the formula:
where R1 and R2 independently are -H, -OH,
or-NR4R5,
R3 is hydrogen, a C1-C1 2 alkyl, C5-C6 cycloalkyl, C6-C1 o aryl, or C7-C11 arylalkyl group, and
R4 and R5 independently represent H, a C1-C12 alkyl group, C5-C10 cycloalkyl, C6-C10 aryl, or C7-C11 arylalkyl group,
provided that at least R1 or R2 is not hydrogen.
一种制备聚氨酯泡沫塑料的方法,包括使有机多异氰酸酯和多元醇在发泡剂、气室稳定剂和主要由式中吡咯烷组成的催化剂组合物存在下反应:
其中 R1 和 R2 分别为-H、-OH、
或-NR4R5、
R3 是氢、C1-C1 2 烷基、C5-C6 环烷基、C6-C1 o 芳基或 C7-C11 芳烷基,以及
R4 和 R5 独立地代表 H、C1-C12 烷基、C5-C10 环烷基、C6-C10 芳基或 C7-C11 芳烷基、
条件是至少 R1 或 R2 不是氢。