Water reducible polyester and resin composition for a...

Details Water reducible polyester and resin composition for a... Water reducible polyester and resin composition for a...

C - Chemistry, Metallurgy

08

G

C08G 63/12 (2006.01) C08G 63/20 (2006.01) C09D 167/00 (2006.01) C09D 167/02 (2006.01)

Patent

CA 2119535

A water-free, water-free reducible primer composition having a volatile organic content of less than 3 pounds per gallon yields a tough, flexible, and weatherable film when applied to metal or plastic substrates. The base resin is a polyester having an acid number of from about 50 to about 60 and a hydroxyl number of from about 160 to about 200. The polyester is the reaction product of from about 0.45 to about 0.5 mole % of adipic acid, from about 0.35 to about 0.4 mole % of neopentyl glycol, and from about 0.15 to about 0.2 mole % of trimethylolpropane.

Composition primaire réductible, exempte d'eau, avec une teneur en composés organiques volatils de moins de 3 livres par gallon, formant une pellicule flexible et résistant aux intempéries après application sur des substrats de métal ou de plastique. La résine de base est un polyester possédant un indice d'acide de 50 à 60 environ et un nombre d'hydroxyles de 160 à 200 environ. Le polyester est le produit de réaction d'environ 0,45 à 0,5 % en mole d'acide adipique, d'environ 0,35 à 0,4 % en mole de néopentylglycol, et d'environ 0,15 à 0,2 % en mole de triméthylolpropane.

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