Invention Grant
- Patent Title: Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups
- Patent Title (中): 制备具有伯羟基端基的聚亚油酸酯多元醇的方法
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Application No.: US13988606Application Date: 2011-11-18
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Publication No.: US09328196B2Publication Date: 2016-05-03
- Inventor: Hartmut Nefzger , Jörg Hofmann , Erika Bauer , Bert Klesczewski , Klaus Lorenz
- Applicant: Hartmut Nefzger , Jörg Hofmann , Erika Bauer , Bert Klesczewski , Klaus Lorenz
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agency: Drinker Biddle & Reath LLP
- Priority: EP10192094 20101122
- International Application: PCT/EP2011/070477 WO 20111118
- International Announcement: WO2012/069383 WO 20120531
- Main IPC: C08G63/91
- IPC: C08G63/91 ; C08G63/06 ; C08G63/664 ; C08G63/87 ; C08G18/42 ; C08G18/36 ; C08G63/82 ; C08G18/40 ; C08G18/48 ; C08G18/66 ; C08G18/76 ; C08G18/08 ; C08G101/00
Abstract:
The present invention relates to a process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups. It furthermore relates to polyricinoleic acid ester polyols obtainable according to the invention and polyurethane polymers prepared using these polyols. The process comprises the steps: a) polycondensation of ricinoleic acid until a hydroxyl number of >0 mg of KOH/g to 80% by weight to
Public/Granted literature
- US20130261205A1 PROCESS FOR THE PREPARATION OF POLYRICINOLEIC ACID ESTER POLYOLS HAVING PRIMARY HYDROXYL END GROUPS Public/Granted day:2013-10-03
Information query
