发明名称 |
Use of low-unsaturated polyether polyols in foams for boards |
摘要 |
<p>The present invention discloses a method for the formation of a flexible slabstock polyurethane foam having substantially improved indentation force deflection and resilience characteristics while maintaining the other physical properties. The method comprises the steps of reacting a triol polyoxyalkylene polyether polyol having a plurality of internal blocks formed from oxyalkylene monomers with a plurality of terminal caps comprising ethylene oxide attached to said plurality of internal blocks, the internal blocks containing at least 80% by weight propylene oxide based on the total weight of all of the oxyalkylenes in said internal blocks and the amount of ethylene oxide in the terminal caps comprising from 5 to 25% by weight based on the total weight of the polyol, said polyol having a degree of unsaturation of less than or equal to 0.015 meq/g KOH with a polyisocyanate component in the presence of a catalyst and water as a blowing agent at a level of between 3 to 7% by weight.</p> |
申请公布号 |
CZ20023858(A3) |
申请公布日期 |
2003.08.13 |
申请号 |
CZ20020003858 |
申请日期 |
2001.05.11 |
申请人 |
BASF CORPORATION |
发明人 |
TUINMAN ROELAND JAN;FISHBACK THOMAS L.;REICHEL CURTIS JOHN |
分类号 |
C08G18/48;C08G18/76;(IPC1-7):C08G18/48;C08J9/08 |
主分类号 |
C08G18/48 |
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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