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Last Updated Tuesday, October 6 2015

Valspar patents durable polyester

Published March 12, 2009
Patent No. U.S. 7,381,472 B2
Valspar has been granted a patent for a coated substrate comprised of a substrate coil, and a coating composition applied to at least one major surface of the substrate coil, wherein the coating composition is comprised of a binder comprised of a polyester resin that is formed using at least one aromatic dicarboxylic acid and using polyols comprised of at least one symmetric diol in an amount greater than 50% weight based on the total weight of polyols and at least one asymmetric diol in an amount greater than 20% weight based on the total weight of polyols, wherein the polyester resin comprises between 50-75% weight isophthalic acid based on the total weight of resin and has a glass transition temperature of at least 35° C.; wherein the symmetric diol includes both 1,3-propanediol and neopentyl glycol; and wherein the flexibility of the coated substrate is at least 1T with no tape off.

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