Ppg Industries Ohio, Inc.

Linlin Li

David R Fenn

Dennis L Faler

Paul H Lamers

Jun Deng

Edward Richard Millero, Jr

Wei Wang

Jonathan P Breon

John E Schwendeman

Leigh Ann Humbert

Jr Edward R Millero

A coating composition includes (a) a melamine resin having imino and methylol functional groups that together comprise 30 mole % or greater of the total functionality of the melamine resin; and (b) at least one polymer reactive with (a) that is obtained from components including polytetrahydrofuran and a carboxylic acid or anhydride thereof. The polytetrahydrofuran includes greater than 20 weight % of the components that form the polymer (b) and the carboxylic acid or anhydride thereof includes greater than 5 weight % of the components that form the polymer (b). The polymer (b) has an acid value of at least 15 based on the total resin solids of the polymer (b).

Coating compositions curable at low temperatures and coatings formed therefrom

A curable coating composition includes: (a) a polymer including at least two active methylene functional groups; (b) a polyisocyanate crosslinker; and (c) a transition metal catalyst. Substrates at least partially coated with these coating compositions are further disclosed. Methods for preparing the coating are further disclosed. Multi-layer coatings including these coating compositions are further disclosed.

Curable coating compositions containing poly activated methylene resins and polyisocyanates

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Pittsburgh, PA, United States of America

Linlin Li