AQUEOUS COATING MATERIAL COMPOSITION AND COATED METAL BASE BODY
The present invention relates to an aqueous coating composition and a coated metal sheet having a coating formed of the aqueous coating composition. The aqueous coating composition includes a base resin of a polyester resin having an acid value of not lower than 10 mgKOH/g and lower than 70 mgKOH/g...
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Main Authors | , , , |
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Format | Patent |
Language | English French German |
Published |
10.08.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The present invention relates to an aqueous coating composition and a coated metal sheet having a coating formed of the aqueous coating composition. The aqueous coating composition includes a base resin of a polyester resin having an acid value of not lower than 10 mgKOH/g and lower than 70 mgKOH/g and a glass transition temperature of not lower than 35°C, and the composition contains β-hydroxyalkylamide compound as a curing agent. The equivalent ratio of the hydroxyl group of the β-hydroxyalkylamide compound to the carboxyl group of the polyester resin (OH group / COOH group molar ratio) is in the range of 0.8 to 3.0. The aqueous coating composition is excellent in flavor sorption resistance and retort whitening resistance and applicable to form a coating excellent in coating properties such as curability and workability. |
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Bibliography: | Application Number: EP20190885572 |