公开(公告)号：US3894075A

公开(公告)日：1975-07-08

申请号：US12221771

申请日：1971-03-08

Applicant: STAMICARBON

Inventor： SCHOEN LOWHARDT A A

IPC: C07F5/06 ,  C08G63/82 ,  C07C69/66

CPC classification number: C08G63/823 ,  C07F5/069

Abstract: A process for producing hydroxy-terminated polyester by polymerizing a lactone or a mixture of lactones in the presence of a catalyst having the general formula MM''(-OROH)4 where M is an alkali metal, M'' is aluminum or boron and R is alkylene, isoalkylene, cycloalkylene or aralkylene. Polyesters having the general formula

are produced where R is a bifunctional hydrocarbon group, R'' and R'''' are alkylene groups and n is a whole number equal to or larger than 3.

Abstract translation: 在具有通式MM'（ - OROH）4的催化剂存在下，通过使内酯或内酯的混合物聚合来制备羟基封​​端的聚酯的方法，其中M是碱金属，M'是铝或硼，R是 亚烷基，异亚烷基，亚环烷基或亚芳烷基。 制备具有通式0的共聚物，其中R是双官能烃基，R'和R“是亚烷基，n是整数，由此产生并行化合物HO-RO-10 C-R'-O-N'-R” 数字等于或大于3。