Title:
MULTILAYER COATING SYSTEM, COATING METHOD, COATING STRUCTURE AND COATED SUBSTRATE
Document Type and Number:
WIPO Patent Application WO/2021/139821
Kind Code:
A1
Abstract:
The invention discloses a multilayer coating system, which belongs to the technical field of coatings, the said multilayer coating system comprises an isocyanate curing coating and a Real Michael addition crosslinkable coating, wherein the isocyanate curing coating comprises at least one resin X containing an acidic carbon-hydrogen bond or an unsaturated carbon-carbon double bond with an electron-withdrawing group, and the resin X performs a Michael addition reaction with the Real Michael addition crosslinkable coating, so that the interlayer adhesion of the two coatings is greatly improved. According to the said multilayer coating system, the invention further discloses a coating method, a coating structure, and a coated substrate. The invention also provides an isocyanate curing coating, which is used for a primer coat for a Real Michael addition crosslinkable coating and a use thereof for improving the adhesion of the Real Michael addition crosslinkable coating to a substrate.
Inventors:
WANG JUNYU (CN)
Application Number:
PCT/CN2021/075273
Publication Date:
July 15, 2021
Filing Date:
February 04, 2021
Export Citation:
Assignee:
WANG JUNYU (CN)
LI HONG (CN)
LI HONG (CN)
International Classes:
C09D167/00; C09D4/06; C09D167/08
Domestic Patent References:
| WO2018210846A1 | 2018-11-22 | |||
| WO2016166382A1 | 2016-10-20 | |||
| WO2018005077A1 | 2018-01-04 |
Foreign References:
| EP0765922A1 | 1997-04-02 | |||
| US20110218299A1 | 2011-09-08 | |||
| EP2374836A1 | 2011-10-12 |
Other References:
BASF: "Innovative Solutions for Transportation Coatings 2 | Innovative Solutions for Transportation Coatings", 3 March 2018 (2018-03-03), XP055789221, Retrieved from the Internet [retrieved on 20210323]
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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