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    • 10. 发明授权
    • Curable sealer and/or adhesive composition, and a method for coating
same in a wet state with a base coat paint, and coated substrates
formed thereby
    • 可固化的密封剂和/或粘合剂组合物,以及用底漆涂料在湿润状态下涂布的方法以及由此形成的涂布的基材
    • US5464888A
    • 1995-11-07
    • US221101
    • 1994-03-31
    • Ian R. Owen
    • Ian R. Owen
    • C08G65/32C08G65/336C09D5/00C09D171/02C09D183/12C09J171/02C09J183/12C09K3/10C08K5/3415
    • C09J171/02C08G65/336
    • A sealer or adhesive composition based on a polyoxyalkylene polymer having a silicon-containing hydrolyzable group, which has improved compatibility with a base or first paint coat containing acrylic resins. The improvement involves the addition to such a sealer/adhesive composition of a polar organic solvent material having both a Snyder's polarity value in the range of from 6.2 to 7.3 and belonging to Snyder's selectivity group III. In a method of the present invention, the inventive sealer/adhesive composition is wet-on-wet overcoated by a base coat of a multi-coat paint system, where the base coat contains acrylic resin, pigment and auxiliary polar solvents, while retarding and even completely preventing adverse surface defects in the base coat upon its drying (curing), such as cracking or wrinkling therein, to provide an improved coated substrate. Useful polar organic solvent materials that have been found to improve the compatibility of the seam sealer composition with a base coat in this manner have been found to include organic solvent materials such as N-methyl pyrrolidone, dimethyl sulfoxide, N,N-dimethylacetamide, and N,N-dimethylformamide.
    • 一种基于具有含硅可水解基团的聚氧化烯聚合物的密封剂或粘合剂组合物,其具有改进的与含有丙烯酸树脂的基材或第一涂料的相容性。 改进之处在于添加这样一种极性有机溶剂材料的密封剂/粘合剂组合物,其具有6.2至7.3范围内的Snyder极性值并且属于Snyder选择性III族。 在本发明的方法中,本发明的密封剂/粘合剂组合物通过多涂层涂料体系的底漆进行湿 - 湿润涂,其中底涂层含有丙烯酸树脂,颜料和辅助极性溶剂,同时延缓和 甚至完全防止底涂层在其干燥(固化)时的不良表面缺陷,例如其中的裂纹或起皱,以提供改进的涂布基材。 已经发现,已经发现已经发现以这种方式提高接缝缩合剂组合物与底涂层的相容性的有用的极性有机溶剂材料包括有机溶剂材料如N-甲基吡咯烷酮,二甲基亚砜,N,N-二甲基乙酰胺和 N,N-二甲基甲酰胺。