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    • 6. 发明申请
    • Curing Agent for Polyurethane Paint and Process for Producing the same
    • 聚氨酯涂料固化剂及其制备方法
    • US20070238819A1
    • 2007-10-11
    • US10574912
    • 2004-10-07
    • Shuso IyoshiTatsumi Fujii
    • Shuso IyoshiTatsumi Fujii
    • C08G18/42C09D175/10
    • C09D175/06C08G18/4269
    • The present invention relates to a process for producing a curing agent for a polyurethane paint, which comprises an aliphatic or alicyclic diisocyanate and a polyester polyol, wherein the polyester polyol is a copolymerized lactone polyol obtained by a ring-opening copolymerization of at least two members of cyclic lactone compounds each represented by the following formula (I) in the presence of a low molecular weight compound having at least two active hydrogen groups as an initiator. By using at least two members of cyclic lactone compounds, there is provided a curing agent for a polyurethane paint which is capable of forming a paint film having high mechanical strength, particularly high flexibility or impact resistance under low temperatures, and excellent in gloss retention.
    • 本发明涉及一种聚氨酯涂料固化剂的制造方法,其包括脂肪族或脂环族二异氰酸酯和聚酯多元醇,其中,所述聚酯多元醇是通过至少两个成员的开环共聚得到的共聚内酯多元醇 的各种由下式(I)表示的环状内酯化合物在具有至少两个活性氢基团的低分子量化合物作为引发剂存在下进行。 通过使用至少两种环状内酯化合物,可提供一种聚氨酯涂料用固化剂,其能够形成在低温下具有高机械强度,特别高的柔韧性或耐冲击性的漆膜,并且具有优异的保光性。