Title:
AQUEOUS COATING MATERIAL COMPOSITION AND METHOD FOR FORMING MULTILAYER COATING FILM
Document Type and Number:
WIPO Patent Application WO/2022/230231
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an aqueous coating material composition which has excellent storage stability, and demonstrates strong glass adhesion properties and high coating film performance even when cured at a comparatively low temperature. An aqueous coating material composition which contains (A) a hydroxyl group- and carboxyl group-containing resin, (B) a blocked polyisocyanate compound, (C) a polycarbodiimide compound and (D) a basic compound, wherein: the basic compound (D) contains (D1) a basic compound which has an acid dissociation constant (PKa) in the range of 7.0-8.5 and a boiling point in the range of 100-200°; the content ratio of the basic compound (D1) is within the range of 30-100 mass% of the mass of the basic compound (D); and the pH of the aqueous coating material composition is within the range of 8.0-11.5.
Inventors:
WATANABE KAZUYA (JP)
Application Number:
PCT/JP2021/046619
Publication Date:
November 03, 2022
Filing Date:
December 16, 2021
Export Citation:
Assignee:
KANSAI PAINT CO LTD (JP)
International Classes:
C09D201/08; B05D1/36; B05D7/24
Domestic Patent References:
| WO2017073697A1 | 2017-05-04 |
Foreign References:
| JP2018178090A | 2018-11-15 | |||
| JP2009234009A | 2009-10-15 | |||
| JP2019198861A | 2019-11-21 |
Other References:
"Polymer Hand Book", vol. III, pages: 139 - 179
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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