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发明授权
US5951911A Low viscosity ethylenically unsaturated polyurethanes containing allophanate groups 失效
含有脲基甲酸酯基团的低粘度烯属不饱和聚氨酯

Low viscosity ethylenically unsaturated polyurethanes containing allophanate groups
摘要：
The present invention relates to ethylenically unsaturated polyurethanes which are substantially free from isocyanate groups and havea) a content of .beta.,.gamma.-ethylenically unsaturated ether groups (calculated as C.dbd.C, MW 24) incorporated through allophanate groups of 0.5 to 10% by weight,b) an allophanate group content (calculated as N.sub.2 C.sub.2 HO.sub.3, MW 101) of 1 to 20% by weight andc) a total content of ethylenically unsaturated groups of (calculated as C.dbd.C, MW 24) of 1 to 15% by weight.The present invention also relates to ethylenically unsaturated polyisocyanates which contain allophanate groups and havei) an NCO content of 5 to 25% by weight,ii) a content of .beta.,.gamma.-ethylenically unsaturated ether groups (calculated as C.dbd.C, MW 24) incorporated through allophanate groups of 0.5 to 15% by weight andiii) an allophanate group content (calculated as N.sub.2 C.sub.2 HO.sub.3, MW 101) of 1 to 30%.Finally, the present invention relates to one-component coating compositions containing the ethylenically unsaturated polyurethanes according to the invention.
摘要（中）：

本发明涉及烯属不饱和聚氨酯，其基本上不含异氰酸酯基团，并且具有a）通过脲基甲酸酯基团通过0.5至10％的通过以下方式引入的β，γ-烯属不饱和醚基团的含量（以C = C，MW 24计算） 重量，b）脲基甲酸酯基含量（以N2C2HO3，MW101计算）为1〜20重量％，c）（计算为C = C，MW 24）的烯属不饱和基团的总含量为1〜15％ 重量。 本发明还涉及含有脲基甲酸酯基并且i）NCO含量为5至25重量％的烯属不饱和多异氰酸酯，ii）β，γ-烯属不饱和醚基团的含量（按C = C计算，MW 24 ）通过0.5至15重量％的脲基甲酸酯基组合，和iii）脲基甲酸酯基含量（以N 2 C 2 HO 3，MW 101计算）为1至30％。 最后，本发明涉及含有根据本发明的烯属不饱和聚氨酯的单组分涂料组合物。

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