公开(公告)号：US20230348657A1

公开(公告)日：2023-11-02

申请号：US18006012

申请日：2021-07-22

Applicant: BASF SE

Inventor： Aggeliki Quell ,  Hans-Josef Thomas ,  Berend Eling

IPC: C08G59/40 ,  C08G59/68 ,  C08G18/09 ,  C08G18/76 ,  C08G18/79 ,  C08G18/00 ,  C08G18/08 ,  C08G18/10 ,  C08G18/71 ,  C08G18/20

CPC classification number: C08G59/4028 ,  C08G59/686 ,  C08G18/097 ,  C08G18/7621 ,  C08G18/798 ,  C08G18/003 ,  C08G18/0852 ,  C08G18/10 ,  C08G18/714 ,  C08G18/2027

Abstract: A process for preparing a thermoplastic polymer involves reacting at least components (a) to (b), in the presence of a catalyst composition (c). Component (a) is an isocyanate composition containing at least one uretdione diisocyanate (a-i), and component (b) is an epoxide composition containing at least one diepoxide (b-i). The catalyst composition (c) contains at least one ionic liquid (c-i), preferably selected from 1-ethyl-3-methyl imidazolium bromide, 1-benzyl-3-methyl imidazolium chloride. 1-butyl-1-methylpiperidinium chloride, 1-ethyl-2,3-dimethylimidazolium bromide, 1-(2-hydroxyethyl)-3-methyl imidazolium chloride, butyl-1-methylpiperidinium acetate, or mixtures of two or more thereof. A thermoplastic polymer obtained or obtainable from the process is useful for the preparation of a fibre or a molded article or as a modifier for another thermoplastic material.