发明名称 |
Process for making a PIPA-polyol |
摘要 |
Process for preparing a polyol comprising particulate material in dispersed form by reacting an MDI-based polyisocyanate and a polyol having an equivalent weight of up to 400 in a relative amount such that the number of NCO-groups is 70-100% of the number of OH-groups in said polyol having an equivalent weight of up to 400, the reaction being carried out in a polyol having an equivalent weight of 500 or more. The polyols are claimed as well.
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申请公布号 |
US2007265411(A1) |
申请公布日期 |
2007.11.15 |
申请号 |
US20070786221 |
申请日期 |
2007.04.11 |
申请人 |
ALBERT VERHELST G;JIANMING YU |
发明人 |
ALBERT VERHELST G.;JIANMING YU |
分类号 |
C08G18/00 |
主分类号 |
C08G18/00 |
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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