Haps free coating composition and film thereof

Details Haps free coating composition and film thereof Haps free coating composition and film thereof

C - Chemistry, Metallurgy

09

D

C09D 167/00 (2006.01) C08J 3/09 (2006.01) C09D 167/02 (2006.01)

Patent

CA 2621176

A coating composition is used to form a film on a substrate. The coating composition includes a polyester, a cross-linking agent reactive with the polyester, and a solvent package substantially free of hazardous air pollutants. The solvent package includes a first solvent, a second solvent, and a third solvent. The first, second, and third solvents in the solvent package have boiling points of less than 300~F, of from 300~F to 340~F, and of greater than 340~F, respectively. The first, second, and third solvents are also present in amounts of from 10 to 25 parts, of at least 50 parts, and of from 5 to 20 parts, by weight, per 100 parts by weight of the solvent package, respectively. The first, second, and third solvents improve properties of the coating composition and of films formed from the coating composition.

Composition de revêtement utilisée pour former un film sur un substrat. La composition de revêtement comprend un polyester, un agent de réticulation réactif avec le polyester et un ensemble de solvants pratiquement exempt de polluants dangereux de l'air. L'ensemble de solvants comprend un premier solvant, un deuxième solvant et un troisième solvant. Les premier, deuxième et troisième solvants présents dans l'ensemble de solvants ont des points d'ébullition inférieurs à 300°F, allant de 300°F à 340°F et supérieurs à 340°F, respectivement. Les premier, deuxième et troisième solvants sont également présents en quantités allant de 10 à 25 parties, d'au moins 50 parties et allant de 5 à 20 parties, en poids, pour 100 parties en poids de l'ensemble de solvants, respectivement. Les premier, deuxième et troisième solvants améliorent les propriétés de la composition de revêtement et des films formés à partir de la composition de revêtement.

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