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    • 10. 发明申请
    • CURABLE FILM-FORMING COMPOSITIONS DEMONSTRATING INCREASED WET-EDGE TIME
    • 可固化的成膜组合物表现出提高的潮湿时间
    • WO2018044351A1
    • 2018-03-08
    • PCT/US2017/023049
    • 2017-03-17
    • PRC-DESOTO INTERNATIONAL, INC.
    • TANG, GuangliangKHUDIAKOV, Mikhail
    • C09D175/04C08G18/79C08G18/22C08G18/40
    • The present invention is directed to a curable film-forming composition comprising: (a) a curing agent comprising reactive isocyanate functional groups; (b) a film-forming compound comprising functional groups reactive with the reactive isocyanate functional groups in (a); (c) a photo-latent catalyst; (d) a beta-diketone having a flash point higher than 60C (140 F); and (e) a beta-diketone having a flash point lower than or equal to 60C (140 F). The invention is further directed to methods of controlling the rate of cure and increasing the wet-edge time of a curable film-forming composition comprising an isocyanate functional curing agent, by adding to the curable film-forming composition a catalyst component comprising: (i) a photo-latent catalyst; (ii) a beta-diketone having a flash point higher than 60C (140 F); and (iii) a beta-diketone having a flash point lower than or equal to 60C (140 F).
    • 本发明涉及一种可固化成膜组合物,其包含:(a)包含反应性异氰酸酯官能团的固化剂; (b)包含可与(a)中的反应性异氰酸酯官能团反应的官能团的成膜化合物; (c)光潜催化剂; (d)闪点高于60℃(140°F)的β-二酮; 和(e)闪点低于或等于60℃(140°F)的β-二酮。 本发明还涉及通过向可固化成膜组合物中加入催化剂组分来控制包含异氰酸酯官能固化剂的可固化成膜组合物的固化速率和增加湿边缘时间的方法,所述催化剂组分包含: )一种光潜催化剂; (ⅱ)闪点高于60℃(140°F)的β-二酮; 和(iii)闪点低于或等于60℃(140°F)的β-二酮。