Invention Grant
- Patent Title: Method for condensation polymerization of hydroxyl-terminated polydiorganosiloxanes
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Application No.: US15734086Application Date: 2019-07-03
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Publication No.: US11136436B2Publication Date: 2021-10-05
- Inventor: John Roberts , Matthew Belowich , Thomas Peterson , Vladimir Pushkarev , Evelyn Auyeung , Mark Rickard
- Applicant: Dow Silicones Corporation , Dow Global Technologies LLC
- Applicant Address: US MI Midland; US MI Midland
- Assignee: Dow Silicones Corporation,Dow Global Technologies LLC
- Current Assignee: Dow Silicones Corporation,Dow Global Technologies LLC
- Current Assignee Address: US MI Midland; US MI Midland
- International Application: PCT/US2019/040442 WO 20190703
- International Announcement: WO2020/040886 WO 20200227
- Main IPC: C08G77/08
- IPC: C08G77/08 ; C08G77/10 ; C08G77/16
Abstract:
A method for making long chain hydroxyl terminated polydiorganosiloxanes with low cyclics content via condensation polymerization employs a selective catalyst. The catalyst includes a salt-anion complex and a free acid.
Public/Granted literature
- US20210221956A1 METHOD FOR CONDENSATION POLYMERIZATION OF HYDROXYL-TERMINATED POLYDIORGANOSILOXANES Public/Granted day:2021-07-22
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