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    • 6. 发明申请
    • Uv-curable coating composition and coated articles
    • 可紫外固化涂料组合物和涂层制品
    • US20050165125A1
    • 2005-07-28
    • US10508326
    • 2003-03-20
    • Takeshi TsunodaShinji Mitsumune
    • Takeshi TsunodaShinji Mitsumune
    • C08F290/06C08F290/14C08G18/67C08K5/00C08K5/3492C08L61/24C08L61/32C09D4/06C09D167/04C09D167/07C09D175/16C08G2/00
    • C08F290/141C08F290/061C08G18/673C08K5/0025C08K5/005C08K5/34922C08L61/24C08L61/32C09D4/06C09D167/04C09D167/07C09D175/16C08L2666/16
    • The present invention relates to an ultraviolet-curable coating composition comprising: (A) an ultraviolet curable four or more functional groups-containing polyfunctional (meth)acrylate having four or more (meth)acryloyl groups in the molecule and a number average molecular weight of 300 to 2,000, (B) a lactone-modified polymer of polyhydric alcohol mono(meth)acrylate containing 20 to 60 percents by weight of ε-caprolactone ring-opening addition product and having a hydroxyl value derived from the lactone modification of 100 to 180 mgKOH/g, and/or a lactone-modified polyester resin containing 10 to 50 percents by weight of lactone ring-opening addition product and having a hydroxyl value of 50 to 180 mgKOH/g, (C) a non-yellow polyisocyanate compound and/or an amino res in, (D) a light stabilizer and, (E) a photopolymerization initiator, wherein a weight ratio of component (A) against to a total weight of component Components (B) and (C) is 10:90 to 50:50, a weight ratio of component (B) against to component (C) is 90:10 to 20:80, and the components described above are formulated to obtain a cured paint film having a Knoop hardness of 10 to 18 and a molecular weight of intercrosslinking of crosslinked resin component in the cured paint film of 150 to 300. The ultraviolet-curable coating composition of the present invention can form the cured paint film having excellent scratch resistance, aesthetic decorative property, adhesion and gasoline resistance, and has high productivity of paint film.
    • 本发明涉及紫外线固化型涂料组合物,其包含:(A)分子中具有四个以上(甲基)丙烯酰基的紫外线固化型四官能团以上的含有官能团的多官能(甲基)丙烯酸酯,数均分子量 300〜2,000,(B)含有20〜60重量%的ε-己内酯开环加成产物并具有100〜180的内酯衍生物的羟值的多元醇单(甲基)丙烯酸酯的内酯改性聚合物 mgKOH / g,和/或含有10〜50重量%的内酯开环加成产物,羟基值为50〜180mgKOH / g的内酯改性聚酯树脂,(C)非黄色多异氰酸酯化合物和 (D)光稳定剂中的氨基树脂和(E)光聚合引发剂,其中组分(A)与组分(B)和(C)的总重量的重量比为10:90 至50:50,组合的重量比 (B)相对于组分(C)为90:10至20:80,并且将上述组分配制成获得具有诺布硬度为10至18的固化漆膜和交联树脂组分的交联分子量 在150〜300的固化漆膜中。本发明的紫外线固化型涂料组合物可以形成具有优异的耐刮擦性,美观装饰性,粘合性和耐汽油性的固化漆膜,并且具有高的漆膜生产率。