Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 17, 2007
Patent Application Number
10879473
Date Filed
June 30, 2004
Patent Primary Examiner
Patent abstract
We describe a process for the preparation of polyurethane polyol from CARDANOL 3-(8pentadecenyl)phenol, derived from cashew nut shell liquid (CNSL), a renewable resource material. The polyol is made by oxidation with peroxy acid generated in situ to give epoxidised CARDANOL 3-(8-pentadecenyl)phenol and the epoxy derivative is converted to the polyol in the presence of the organic acid. The cardanol-based polyol may be reacted with isocyanate to form polyurethane. Alternatively blowing agents are included with the cardanol-based polyol before it is reacted with the isocyanate. These polyols are especially suitable for making rigid foams of very low density and high compressive strength.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
