Title: Multi-layer coatings and methods of preparing the same

Abstract

A multi-layer coating includes: a first basecoat layer applied over at least a portion of a substrate; and a second basecoat layer applied over the first basecoat layer. The first basecoat layer and second basecoat layer are formed from compositions having a polyhydrazide and core-shell particles dispersed in aqueous mediums. The core-shell particles of the first basecoat composition includes (1) a polymeric core at least partially encapsulated by (2) a polymeric shell comprising urea linkages, and keto and/or aldo functional groups. The polymeric core of the core-shell particles of the first basecoat composition and the second basecoat composition are each independently covalently bonded to at least a portion of the polymeric shell of the core-shell particles.

Inventors:

Xu, Xiangling; Sadvary, Richard J.; Swarup, Shanti; Zhou, Hongying

Issue Date:

2021-12-14

Research Org.:

PPG Industries Ohio, Inc., Cleveland, OH (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1860159

Patent Number(s):

11198153

Application Number:

16/086,253

Assignee:

PPG Industries Ohio, Inc. (Cleveland, OH)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

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B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL

B05D3/0254 - {After-treatment}
B05D5/061 - {Special surface effect}
B05D7/14 - to metal, e.g. car bodies
B05D7/24 - for applying particular liquids or other fluent materials
B05D7/54 - {No clear coat specified}
B05D7/56 - {Three layers or more}
B05D7/574 - {at least some layers being let to dry at least partially before applying the next layer

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

C08F220/14 - Methyl esters {, e.g. methyl
C08F220/58 - containing oxygen in addition to the carbonamido oxygen {, e.g. N-methylolacrylamide, N-
C08F222/102 - {of dialcohols, e.g. ethylene glycol di
C08F285/00 - Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
C08F290/067 - {Polyurethanes

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G18/0823 - {containing carboxylate salt groups or groups forming them}
C08G18/0871 - {the dispersing or dispersed phase being organic}
C08G18/246 - {containing also tin-carbon bonds}
C08G18/348 - {Hydroxycarboxylic acids}
C08G18/40 - High-molecular-weight compounds {
C08G18/4018 - {Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48}
C08G18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
C08G18/4238 - {derived from dicarboxylic acids and dialcohols}
C08G18/48 - Polyethers
C08G18/4854 - {Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group}
C08G18/6637 - {with compounds of group C08G18/32 or polyamines of C08G18/38}
C08G18/667 - {with compounds of group C08G18/32 or polyamines of C08G18/38}
C08G18/672 - {Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen}
C08G18/755 - {and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate}

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients

C08K5/0025 - {Crosslinking or vulcanising agents
C08K5/29 - Compounds containing {one or more} carbon-to-nitrogen double bonds

C - CHEMISTRY C09 - DYES C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS

C09D151/08 - grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
C09D175/04 - Polyurethanes
C09D175/16 - having terminal carbon-to-carbon unsaturated bonds

C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25D - PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS

C25D13/04 - with organic material

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DOE Contract Number:  

EE0005777

Resource Type:

Patent

Resource Relation:

Patent File Date: 01/19/2017

Country of Publication:

United States

Language:

English