发明名称 |
Aqueous polyurethane dispersions containing dimer/trimer |
摘要 |
The present invention relates to a composition being an aqueous dispersion of a polyurethane in water, said composition comprising water and the reaction product of (a) a water-dispersible isocyanate-terminated polyurethane prepolymer having an NCO content of between 2.1 and 10% by weight, (b) an organic polyisocyanate adduct mixture comprising a polyisocyanate dimer and a polyisocyanate trimer and having an average isocyanate functionality of between 2.1 and 4.0, and (c) an active hydrogen-containing chain extender. Also disclosed is a process for preparing this composition, and a method for coating a substrate with the composition.
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申请公布号 |
US6136941(A) |
申请公布日期 |
2000.10.24 |
申请号 |
US19950430083 |
申请日期 |
1995.04.27 |
申请人 |
ARCO CHEMICAL TECHNOLOGY, L. P. |
发明人 |
SMITH, CURTIS P.;REISCH, JOHN W.;FEEGEL, RICHARD J. |
分类号 |
C08G18/08;C08G18/10;C08G18/12;C08G18/66;C09D175/04;(IPC1-7):C08G18/70 |
主分类号 |
C08G18/08 |
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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