发明授权
- 专利标题: Clear coating composition for an automobile and method of forming a multi-layer coating film using the same
- 专利标题(中): 用于汽车的透明涂料组合物和使用其形成多层涂膜的方法
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申请号: US11313786申请日: 2005-12-22
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公开(公告)号: US08138258B2公开(公告)日: 2012-03-20
- 发明人: Hideaki Tsujioka , Junji Shimada , Hisaki Tanabe , Mirei Kato , Yoshinori Narita
- 申请人: Hideaki Tsujioka , Junji Shimada , Hisaki Tanabe , Mirei Kato , Yoshinori Narita
- 申请人地址: JP Osaka JP Toyota-Shi, Aichi
- 专利权人: Nippon Paint Co., Ltd.,Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Nippon Paint Co., Ltd.,Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址: JP Osaka JP Toyota-Shi, Aichi
- 代理机构: Fitch, Even, Tabin & Flannery
- 优先权: JP2004-370987 20041222
- 主分类号: C08L75/00
- IPC分类号: C08L75/00
摘要:
An automotive clear coating composition includes a hydroxyl group-containing acrylic resin obtained using hydroxyalkyl(meth)acrylate having a hydroxyalkyl group having 4-9 carbon atoms as at least a part of its monomer; and a polyfunctional isocyanate compound in which at least a part thereof is an isocyanurate type isocyanate compound. The prepared composition has 25 to 50 mass % of a soft segment part with respect to a total solid content of such acrylic resin and the polyfunctional isocyanate compound, and a ratio of a soft segment part derived from a lactone-containing monomer with respect to the total solid content of such acrylic resin and the polyfunctional isocyanate compound of not more than 4.5 mass %. A cured coating film has a dynamic glass transition temperature within a range of 30 to 60° C. The soft segment part is represented by —CH2)n— wherein n represents an integer of 4 or more.
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