发明名称 METHOD OF FORMING A MULTI-LAYER COATING ON AUTOMOBILE BODIES WITHOUT A PRIMER BAKE
摘要 <p>This invention relates to a method for forming a multi-layer coating, by sequentially applying a primer surfacer, a base coat composition, and a clear coat composition on an automotive substrate in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer surfacer comprises: a film forming binder, a volatile organic liquid carrier, and pigment(s); and the binder contains about: 40 to 95% by weight of a highly branched acrylic polymer having a hydroxyl, carboxyl and/or other crosslinkable functional group monomer content of about 1 to 65%; and 5 to 60% by weight of an aminoplast resin crosslinking agent. The composition is essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting multi-layered coating film has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.</p>
申请公布号 EP1940975(A1) 申请公布日期 2008.07.09
申请号 EP20060816676 申请日期 2006.10.10
申请人 E.I. DU PONT DE NEMOURS AND COMPANY 发明人 HAZAN, ISIDOR;JOHNSON, JEFFERY, W.;MATHESON, ROBERT, R.;TRINDADE, DELSON, J.
分类号 C09D175/04;B05D7/00;B05D7/14;C08G18/62;C08G18/80;C09D5/00;C09D5/02;C09D133/06 主分类号 C09D175/04
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