Title:
METHOD FOR FORMING MULTILAYER COATING FILM
Document Type and Number:
WIPO Patent Application WO/2019/064958
Kind Code:
A1
Abstract:
Provided is a method for forming a multilayer coating film, which is capable of forming a multilayer coating film that exhibits excellent curability at low temperatures, while having excellent hardness and excellent finish appearance. A method for forming a multilayer coating film, which sequentially performs: (1) a step for forming an uncured first color coating film by applying a two-package type aqueous first color coating material (X) onto an object to be coated; (2) a step for forming an uncured second color coating film by applying a one-package type aqueous second color coating material (Y) onto the uncured first color coating film obtained in the step (1); (3) a step for forming an uncured clear coating film by applying a two-package type clear coating material (Z) onto the uncured second color coating film obtained in the step (2); and (4) a step for curing the uncured first color coating film, the uncured second color coating film and the uncured clear coating film, which are formed in the steps (1)-(3), at the same time by heating these coating films. This method for forming a multilayer coating film is configured such that the one-package type aqueous second color coating material (Y) contains a specific hydroxyl group-containing acrylic resin (Y1), a specific hydroxyl group-containing polyester resin (Y2), and a blocked polyisocyanate compound and/or a melamine resin (Y3).
Inventors:
IMANAKA KENJI (JP)
KITAGAWA HIROSHI (JP)
KITAGAWA HIROSHI (JP)
Application Number:
PCT/JP2018/029958
Publication Date:
April 04, 2019
Filing Date:
August 09, 2018
Export Citation:
Assignee:
KANSAI PAINT CO LTD (JP)
International Classes:
B05D1/36; B05D7/24; C09D133/00; C09D167/00; C09D167/02; C09D175/04
Domestic Patent References:
| WO2012137864A1 | 2012-10-11 | |||
| WO2014054593A1 | 2014-04-10 | |||
| WO2007126107A1 | 2007-11-08 |
Foreign References:
| JP2016155945A | 2016-09-01 | |||
| JP2011530393A | 2011-12-22 |
Other References:
"Polymer Handbook", vol. III, pages: 139 - 179
See also references of EP 3689476A4
See also references of EP 3689476A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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