Powder coating compositions for low temperature curing and high flow
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United States of America Patent
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Oct 25, 2016
Grant Date -
Dec 12, 2013
app pub date -
Aug 14, 2013
filing date -
Dec 19, 2008
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Abstract
The present invention discloses powder coating compositions and to components and ingredients for incorporation therein, suitable for low temperature curing schedule and with excellent resistance to outside aging. The powder coating composition can be cured at a temperature from 140° C. to lead to a coating with excellent flow and high gloss. In one aspect of the invention, a composition having a polyester resin comprises 0.1 to 60 weight percent of mono or poly-functional satured or unsatured fatty acids of mixtures of them, 30 to 60 weight percent of an aromatic diacid or cycloalkyl diacids or anhydride 20 to 30 weight percent of aliphatic diol, 0 to 6 weight percent of aliphatic triol, 0 to 10 weight percent of isosorbide and isomers or cycloalkyl diol, 0 to 10 weight percent of C3-C12 aliphatic diacid, and with total weight percent of the monomers equal to 100.
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