Invention Application
- Patent Title: HIGH TRANSFER EFFICIENCY APPLICATION METHODS FOR LOW TEMPERATURE CURING COATING COMPOSITIONS AND COATED SUBSTRATES FORMED THEREBY
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Application No.: PCT/US2021/053303Application Date: 2021-10-04
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Publication No.: WO2022076276A2Publication Date: 2022-04-14
- Inventor: FENN, David R.
- Applicant: PPG INDUSTRIES OHIO, INC.
- Applicant Address: 3800 West 143rd Street
- Assignee: PPG INDUSTRIES OHIO, INC.
- Current Assignee: PPG INDUSTRIES OHIO, INC.
- Current Assignee Address: 3800 West 143rd Street
- Agency: TREBILCOCK, Christine W. et al.
- Priority: US63/087,550 2020-10-05
- Main IPC: C09D151/00
- IPC: C09D151/00 ; C09D175/04 ; C09D7/63 ; C08F290/00 ; C08G18/0823 ; C08G18/3206 ; C08G18/348 ; C08G18/5024 ; C08G18/6229 ; C08G18/672 ; C08G18/683 ; C08G18/706 ; C08G18/722 ; C08G18/73 ; C08G18/755 ; C09D151/003 ; C09D5/022
Abstract:
Methods and compositions for forming a coating layer on a substrate that include a) applying an aqueous coating composition to at least a portion of the substrate using a high transfer efficiency applicator that expels the coating composition; and b) curing the coating composition to form a cured coating layer. The aqueous coating composition includes an aqueous carrier, a film-forming resin having at least one crosslinking-functional group, and a co-reactive material having at least one functional group reactive with the crosslinking-functional group. The cured coating layer of the aqueous coating composition achieves 100 MEK double rubs as measured in accordance with ASTM D5402-19 (2019) after baking at 80°C for 30 minutes at coating thickness of 35 µm.
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