Ppg Industries, Inc.

Byron K Johnston

Ronald R Ambrose

Samuel Porter, Jr

Wen-Hsuan Chang

James B O'Dwyer

David T McKeough

Wayne H Tyger

David P Zielinski

A high solids coating composition having a total solids content of at least 40 percent contains as a film former a urethane vehicle having a hydroxyl value of at least about 50 and a number average molecular weight of no more than 4,000 which is prepared from reactants containing a hydroxyl functional polyether or polyester or mixtures thereof of a molecular weight less than 1,000 and average functionality not exceeding 3 and at least 10 weight percent based on the total weight of hydroxyl functional polyether or polyester or mixtures thereof and polyisocyanate of a polyisocyanate having isocyanate groups separated by one or more hydrophobic moieties, each moiety containing at least 12 consecutive carbon atoms in a continuous chain; and an aminoplast crosslinking agent.

Urethane component for high solids coating compositions

This invention encompasses a high solids, solvent-based, thermosetting two-component coating composition having the necessary flexibility, hardness and durability that make it an effective coating for both elastomeric and hard metal substrates. The composition comprises a polyester-urethane polyol and a curing agent comprising a polyisocyanate.

Thermosetting high solids solvent-based polyester-urethane two-component

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Arnold, PA, United States of America

Byron K Johnston