METHOD FOR FORMING MULTILAYER COATING FILM

WIPO Patent Application WO/2021/132132

A1

Provided is a method for forming a multilayer coating film that has good shock absorption and adhesion properties.　In this method for forming a multilayer coating film, a primer coating composition is applied to an item to be coated to form an uncured primer coating film, an intermediate coating composition is applied on top of the obtained uncured primer coating film to form an uncured intermediate coating film, a base coating composition is applied on top of the obtained uncured intermediate coating film to form an uncured base coating film, a clear coating composition is applied on top of the obtained uncured base coating film to form an uncured clear coating film, and these uncured coating films are heated and cured. The primer coating composition includes a coating film forming resin, and the coating film forming resin includes 10 mass% or more of a polyolefin resin (A) in relation to the resin solid content of the coating film forming resin, 20 mass% or more of a polyurethane resin (B), and 5 mass% or more of a polyester resin (C).

TAKATA SHINYA (JP)
YAMAOKA MANABU (JP)
SASAKI NORIYUKI (JP)
INAZUMI TAKANORI (JP)

PCT/JP2020/047628

July 01, 2021

December 21, 2020

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NIPPON PAINT AUTOMOTIVE COATINGS CO LTD (JP)

B05D1/36; B05D3/02; B05D7/24; C09D5/00; C09D123/00; C09D167/02; C09D175/04

WO2007066827A1	2007-06-14
WO2015087932A1	2015-06-18

JP2019166454A	2019-10-03
JP2019167389A	2019-10-03
JP2018171614A	2018-11-08

YAMAO, Norihito et al. (JP)

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