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公开(公告)号:US5866657A
公开(公告)日:1999-02-02
申请号:US970587
申请日:1997-11-14
CPC分类号: C08G18/6229 , C08G18/706 , C08G18/809 , C09D5/002 , Y10S525/902
摘要: In order to provide a general-purpose aqueous primer composition requiring no organic solvent and capable of improving adhesive strength and durability while ensuring an adequate application life required for the work of primer coating process, a primer composition according to the present invention contains (a) a modified polyisocyanate obtained by reaction of polyisocyanate; an emulsifying agent having an active hydrogen group reactable to an isocyanate group; and a silane coupling agent having an active hydrogen group reactable to an isocyanate group and (b) a core shell emulsion having a core layer of a rubbery polymer and a shell layer of a glassy polymer and having an active hydrogen group reactable to an isocyanate group in the core layer and/or the shell layer.
摘要翻译: 为了提供不需要有机溶剂的通用水性底漆组合物,并且能够在确保底漆涂布工序所需的适当使用寿命的同时提高粘合强度和耐久性,根据本发明的底漆组合物含有(a) 通过多异氰酸酯反应得到的改性多异氰酸酯; 具有可与异氰酸酯基团反应的活性氢基团的乳化剂; 和具有可与异氰酸酯基团反应的活性氢基团的硅烷偶联剂和(b)具有橡胶状聚合物的核心层和玻璃状聚合物的壳层的具有可与异氰酸酯基团反应的活性氢基团的核壳乳液 在芯层和/或壳层中。