Process for forming a coated film of an olefinic resin

Details Process for forming a coated film of an olefinic resin Process for forming a coated film of an olefinic resin

B - Operations, Transporting

32

B

154/92.6

B32B 15/08 (2006.01) B05D 7/14 (2006.01) C08J 5/12 (2006.01)

Patent

CA 1151520

ABSTRACT OF THE DISCLOSURE This invention relates to a process for forming an olefinic resin on the surface of a metal substrate with high strength of adhesion. The process comprises [A] forming a multilayer coated film consisting of an olefinic resin film as a surface layer portion and a cured epoxy resin film as an under layer portion on a metallic substrate by a single coating operation using a multilayer film-forming coating composition comprising as main resinous components (a) a solid powder containing an olefinic resin having a melt index of 0.3 to 80 g/10 minutes, (b) a solid powder containing a polar group-containing modified olefinic resin having a melt index of 0.3 to 80 g/10 minutes, and (c) a film-forming resinous material comprising an epoxy resin having a number average molecular weight of about 350 to about 4,000 and an epoxy equivalent of 150 to 3,800 and a curing agent therefor, and [B] then heat-bonding an olefinic resin lining material to the olefinic resin surface layer of the multilayer coated film.

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