- Patent Title: Preparation of hyperbranched polycarbonate polyols and their use
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Application No.: US15575567Application Date: 2016-03-24
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Publication No.: US10590237B2Publication Date: 2020-03-17
- Inventor: Paul Share , Sebastian Berger , David Tuerp
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Foley & Lardner LLP
- International Application: PCT/US2016/023991 WO 20160324
- International Announcement: WO2016/186727 WO 20161124
- Main IPC: C08G64/30
- IPC: C08G64/30 ; C08G83/00 ; C08G64/20
Abstract:
A process for preparing a hyperbranched polycarbonate polyol includes reacting a polyfunctional alcohol and an ester or carbonate in the presence of a catalyst and then heating the reaction mixture under azeotropic reflux conditions to form an alcohol or water. The alcohol or water by-product is then removed from the reaction mixture, thereby pushing the reaction forward.
Public/Granted literature
- US20180134841A1 PREPARATION OF HYPERBRANCHED POLYCARBONATE POLYOLS AND THEIR USE Public/Granted day:2018-05-17
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