发明授权
- 专利标题: Waterborne basecoat/high solids clear finish for automotive substrates having an improved appearance
- 专利标题(中): 具有改善外观的汽车底材的水性底漆/高固含量清漆
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申请号: US557084申请日: 1990-07-25
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公开(公告)号: US5100735A公开(公告)日: 1992-03-31
- 发明人: David C. K. Chang
- 申请人: David C. K. Chang
- 申请人地址: DE Wilmington
- 专利权人: E. I. Du Pont de Nemours and Company
- 当前专利权人: E. I. Du Pont de Nemours and Company
- 当前专利权人地址: DE Wilmington
- 主分类号: B05D7/00
- IPC分类号: B05D7/00 ; C08L61/32 ; C09D133/06
摘要:
An improved process for forming a multilayer finish on a substrate by applying a layer of a waterborne basecoating composition to the substrate, at least partially drying the coating, applying a layer of a solvent based high solids clear coating to the basecoating and curing the coatings; the improvement that is used therewith is as follows:A. a waterborne basecoating composition that has a film forming binder of an acrylic polymer neutralized with ammonia, a primary amine or a secondary amine without the presence of a tertiary amine a water dispersible or water dilutable alkylated melamine formaldehyde resin and the composition contains pigments in a pigment to binder weight ratio of about 0.5/100 to 200/100;B. a high solids solvent based clear coating composition having a film forming binder of an acrylic polymer, a polyester or a polyesterurethane and an alkylated melamine formaldehyde crosslinking agent and about 0.1-5% by weight, based on the weight of the binder, of a strong acid catalyst;wherein the basecoating composition and the clear coating composition are cured at about 100.degree.-180.degree. C. to form a glossy wrinkle free finish having an automotive quality appearance.
公开/授权文献
- US5889734A Electronic timepiece 公开/授权日:1999-03-30
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