Invention Grant
- Patent Title: Process for making polyether diols
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Application No.: US16313516Application Date: 2017-06-12
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Publication No.: US11124604B2Publication Date: 2021-09-21
- Inventor: Jean-Paul Masy , Oguz Türünç
- Applicant: Dow Global Technologies LLC
- Applicant Address: US MI Midland
- Assignee: Dow Global Technologies LLC
- Current Assignee: Dow Global Technologies LLC
- Current Assignee Address: US MI Midland
- International Application: PCT/US2017/037077 WO 20170612
- International Announcement: WO2018/005056 WO 20180104
- Main IPC: C08G65/26
- IPC: C08G65/26 ; B01J23/75 ; C08G65/334

Abstract:
Polyether diols characterized by a hydroxyl number of 56 or lower, high average functionality and high primary hydroxyl content are prepared by alkoxylating an unsaturated alcohol in multiple steps to form a polyether monol that contains 39% or more primary hydroxyl groups, and then reacting the polyether monol with a mercaptoalcohol that has a primary hydroxyl group.
Public/Granted literature
- US20200181326A1 PROCESS FOR MAKING POLYETHER DIOLS Public/Granted day:2020-06-11
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