Title:
METHOD FOR PRODUCING COATING FILM AND MULTILAYER COATING FILM
Document Type and Number:
WIPO Patent Application WO/2023/062991
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a method for producing a coating film, the method enabling the production of a coating film which has good matting properties even in cases where a solvent-free coating composition is used; and preferably, a method for producing a coating film, the method enabling the production of a coating film which achieves good coating film durability, while being capable of suppressing odor during the time of application, and which has good matting properties even in cases where a smooth surface is coated. A method for producing a coating film according to the present disclosure comprises: a step in which a first coating film is formed by applying a first coating composition to an object to be coated; a step in which a second coating composition is applied onto the first coating film within the time from immediately after the application of the first coating composition to the object to be coated to the time point when the first coating film has been cured and dried, thereby forming a multilayer coating film in which the first coating film and the second coating film are stacked; and a step in which a coating film is formed by curing the multilayer coating film. With respect to this method for producing a coating film, the first coating composition is a two-pack type coating composition which contains a solvent-free base material and a solvent-free curing agent; and the second coating composition contains fine silica particles and a hydrophilic medium.
Inventors:
DATE MASAHIRO (JP)
SHIRAI KOJI (JP)
UTSUNOMIYA MISATO (JP)
SHIRAI KOJI (JP)
UTSUNOMIYA MISATO (JP)
Application Number:
PCT/JP2022/033885
Publication Date:
April 20, 2023
Filing Date:
September 09, 2022
Export Citation:
Assignee:
NIPPON PAINT IND COATINGS CO LTD (JP)
International Classes:
B05D1/36; B05D7/24; C09D5/28; C09D7/61; C09D175/04; E01C23/20
Foreign References:
| JP2021020187A | 2021-02-18 | |||
| JPS5511082A | 1980-01-25 | |||
| JP2002250099A | 2002-09-06 | |||
| JP2018001054A | 2018-01-11 | |||
| JP2015218289A | 2015-12-07 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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