发明名称 |
Aqueous polyisocyanate dispersions and their use for the production of fiberglass mats. |
摘要 |
<p>The present invention is directed to an aqueous polyisocyanate dispersion which has an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared by a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight and b) chain extending the dispersed polyisocyanate with a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.6:1.0 to 0.95:1.0. The present invention is also directed to a process for the preparation of a fibrous mat by treating fibers with the dispersed polyisocyanate before the isocyanate content of the dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate. Finally, the present invention is directed to the fibrous mats obtained in accordance with this process.</p> |
申请公布号 |
EP0458153(A2) |
申请公布日期 |
1991.11.27 |
申请号 |
EP19910107669 |
申请日期 |
1991.05.11 |
申请人 |
MOBAY CORPORATION |
发明人 |
MARKUSCH, PETER H.;SARPESHKAR, ASHOK M. |
分类号 |
C03C25/24;C03C25/26;C08G18/28;C08G18/70;C08G18/80 |
主分类号 |
C03C25/24 |
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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