Invention Grant
- Patent Title: Process for preparing polyether polyol using DMC catalyst and continuous addition of starter
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Application No.: US15737813Application Date: 2016-06-20
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Publication No.: US10767009B2Publication Date: 2020-09-08
- Inventor: Jean-Paul Masy , Carlos M. Villa , David A. Babb , John W. Weston , Sweta Somasi
- Applicant: Covestro LLC
- Applicant Address: US PA Pittsburgh
- Assignee: Covestro LLC
- Current Assignee: Covestro LLC
- Current Assignee Address: US PA Pittsburgh
- Agent N. Denise Brown
- International Application: PCT/US2016/038426 WO 20160620
- International Announcement: WO2017/003748 WO 20170105
- Main IPC: C08G18/48
- IPC: C08G18/48 ; C08G65/26 ; C08G101/00
Abstract:
Polyether polyols are made by a process that includes a continuous addition of starter and alkylene oxide. The feed of starter is discontinued when 80 to 95% of the alkylene oxide has been fed to the reactor. This process produces a product with a narrow molecular weight distribution.
Public/Granted literature
- US20180237587A1 PROCESS FOR PREPARING POLYETHER POLYOL USING DMC CATALYST AND CONTINUOUS ADDITION OF STARTER Public/Granted day:2018-08-23
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