申请人:Nippon Soda Co., Ltd.
公开号:EP3248998A1
公开(公告)日:2017-11-29
A cyclic ester such as lactides and the like is mixed, in an organic solvent, with an alkyl aluminum compound such as trimethyl aluminum, triethyl aluminum and the like, and then, to the resulting mixture, at least one selected from the group consisting of an organic lithium ring-opening polymerization catalyst, an organic sodium ring-opening polymerization catalyst, an organic potassium ring-opening polymerization catalyst, an organic zinc ring-opening polymerization catalyst, an organic magnesium ring-opening polymerization catalyst, an organic tin ring-opening polymerization catalyst, an organic calcium ring-opening polymerization catalyst, an organic titanium ring-opening polymerization catalyst, and an amine ring-opening polymerization catalyst to allow ring-opening polymerization of the cyclic ester, thereby a polyester is obtained.
在有机溶剂中,将环状酯(如乳酰胺等)与烷基铝化合物(如三甲基铝、三乙基铝等)混合,然后在所得混合物中加入至少一种选自以下组别的催化剂:有机锂开环聚合催化剂、有机钠开环聚合催化剂、有机钾开环聚合催化剂、有机锌开环聚合催化剂、有机镁开环聚合催化剂、有机锡开环聚合催化剂、有机钙开环聚合催化剂、有机镁开环聚合催化剂、有机锡开环聚合催化剂、有机钙开环聚合催化剂、有机锌开环聚合催化剂、有机镁开环聚合催化剂、有机锡开环聚合催化剂、有机钙开环聚合催化剂、有机钛开环聚合催化剂和胺开环聚合催化剂中的至少一种,使环酯开环聚合,从而得到聚酯。