发明名称 |
Process for the preparation of flexible polyurethane foams |
摘要 |
A process for the preparation of flexible polyurethane foams comprising the steps of : (a) bringing together a polyol component, a polyisocyanate component, a blowing agent comprising liquid carbon dioxide, a suitable catalyst and optionally ancillary chemicals at sufficient pressure to maintain the carbon dioxide in a liquid state, and (b) releasing the pressure and allowing the mixture obtained in step (a) to react into a flexible polyurethane foam. The polyol component comprises a polymer polyol consisting of at least one polyether polyol having an average nominal functionality of at least 2.5 with dispersed therein from 2 to 50 wt% of polymer particles based on total weight of polymer polyol. The particle size of none of the polymer particles exceeds 50 micron.
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申请公布号 |
NZ512682(A) |
申请公布日期 |
2003.07.25 |
申请号 |
NZ20000512682 |
申请日期 |
2000.01.18 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B |
发明人 |
MAAS, WILFRIDUS PETRUS MARIA;VANDICHEL, JEAN-CLAUDE NOEL ELIANE |
分类号 |
C08G18/46;C08G18/48;C08G18/63;C08G101/00;C08J9/00;C08J9/12;C08L75/04;(IPC1-7):C08J9/12 |
主分类号 |
C08G18/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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