发明名称 |
Process for preparing polyurethane polyol and rigid foams therefrom |
摘要 |
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.
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申请公布号 |
US7244772(B2) |
申请公布日期 |
2007.07.17 |
申请号 |
US20040879473 |
申请日期 |
2004.06.30 |
申请人 |
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH |
发明人 |
ITTARA SURESH KATTIMUTTATHU;SARANGAPANI KISHANPRASAD VADI |
分类号 |
C08G18/28;C07C37/00 |
主分类号 |
C08G18/28 |
代理机构 |
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代理人 |
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