Method for forming multilayer coated film

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United States of America Patent

PATENT NO 11541420
APP PUB NO 20190344310A1
SERIAL NO

16394503

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Abstract

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A method for forming a multilayer coated film includes step (1) of applying an aqueous intermediate coating composition (A), step (2) of applying an aqueous base coating composition (B), step (3) of applying a clear coating composition (C), and step (4) of heat-curing the coated films. The coating composition (A) contains a specific hydroxyl group-containing acrylic resin (a1), a specific polyurethane resin (a2), a specific hydroxyl group-containing polyester resin (a3), a melamine resin (a4), and an active methylene-blocked polyisocyanate compound (a5). A ratio of the resin (a1) to the resin (a2) falls within a specific range. The heat-cured coated film of the coating composition (A) has a specific elongation at break, Young's modulus and Tukon hardness. The coating composition (C) contains a hydroxyl group-containing acrylic resin (c1) and an allophanate group-containing polyisocyanate compound (c2).

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHATOYOTA
KANSAI PAINT CO LTD33-1 KANZAKI-CHO AMAGASAKI-SHI HYOGO 6618555 ?6618555

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ambo, Keiji Miyoshi, JP 10 12
Hase, Masako Toyota, JP 5 7
Matsubara, Kazuki Miyoshi, JP 25 239
Matsuura, Yoshinari Miyoshi, JP 2 3
Mitsuishi, Hiroshi Nagoya, JP 2 1
Ono, Takayuki Miyoshi, JP 101 787
Tonomura, Hironori Miyoshi, JP 19 79

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