Intermediate coating composition, multilayered coating film, and method for forming the multilayered coating film
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United States of America Patent
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May 30, 2017
Grant Date -
Oct 1, 2015
app pub date -
Mar 19, 2015
filing date -
Mar 26, 2014
priority date (Note) -
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Abstract
An intermediate coating composition used in forming an intermediate coating layer directly overlaid on a surface of an electrodeposition coating layer constructing a vehicle outer panel, the coating composition containing as resin components: (a) 1% to 27% by mass of a polycaprolactonetriol; (b) 20% to 60% by mass of a blocked isocyanate; and (c) 1% to 20% by mass of a melamine resin, each at a percentage content in entire resin components, and the coating composition further containing as a pigment component: (d) 1% to 10% by mass of talc in terms of pigment mass concentration. As the resin component, (e) greater than 0% to 10% by mass of an epoxy resin is preferably contained. A urethane curing catalyst is preferably contained in an amount of greater than 0.01 parts to 2 parts by mass with respect to 100 parts by mass of the entire resin components.
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