MULTILAYER BODY AND METHOD FOR PRODUCING SAME

WIPO Patent Application WO/2022/168811

A1

Provided is a multilayer body having improved coating film adhesiveness after an environmental testing. More specifically provided are: a multilayer body comprising at least a base material layer and a surface layer provided on a surface of the base material layer, in which the surface layer is formed by applying a resin composition comprising an organic solvent (A) having a boiling point lower than 120°C and an organic solvent (B) having a boiling point of 120°C or higher at a A:B mass ratio of 3:7 to 7:3, and at least drying the applied resin composition in a first drying furnace at a temperature ranging from 90 to 120°C and then drying the dried resin composition in a second drying furnace at a temperature ranging from 100°C to 140°C, the resin composition contains a (meth)acryloyl polymer (C), the (meth)acryloyl polymer (C) has a (meth)acryl equivalent of 200 to 600 g/eq and a mass average molecular weight of 5,000 to 200,000, and the coating film adhesiveness of the surface layer is such that the evaluation result determined by the evaluation method prescribed in JIS K 5600-5-6 is 0; and a method for producing the multilayer body.

KAMEI SHOTA (JP)
NAKASEKO HIROSHI (JP)
UEKI AKITAKE (JP)
FUKUNAGA YASUTAKA (JP)

PCT/JP2022/003714

August 11, 2022

February 01, 2022

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MITSUBISHI GAS CHEMICAL CO (JP)
MGC FILSHEET CO LTD (JP)

B05D3/02; B32B27/16; B05D7/24; C09D4/02; C09D7/20; C09D133/00; C09D133/14

WO2018038101A1	2018-03-01
WO2017056196A1	2017-04-06
WO2021193809A1	2021-09-30

JP2003231218A	2003-08-19
JP2012072327A	2012-04-12
JP2020049770A	2020-04-02

KOBAYASHI Hiroshi et al. (JP)

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