Can and coil coating resins

Details Can and coil coating resins Can and coil coating resins

C - Chemistry, Metallurgy

09

D

C09D 167/00 (2006.01)

Patent

CA 2286833

The invention relates to a can or coil coating resin system. The system contains a mixture of at least 2 polymers wherein at least one polymer has a glass transition temperature greater than 45 °C and wherein the polymers are soluble in organic solvents. The polymer with the glass transition temperature of greater than 45 °C is preferably an amorphous polyester resin. The second polymer may be a resin with a dry solids content between 30% and 100% and a Tg of less than 40 °C.

L'invention concerne une composition de résine d'enduction en continu de boîtes ou de bandes, constituée d'un mélange d'au moins deux polymères, l'un de ceux-ci possédant une température de transition vitreuse supérieure à 45 DEG C et les deux polymères étant solubles dans des solvants organiques. Le polymère possédant la température de transition vitreuse supérieure à 45 DEG C est, de préférence, une résine polyester amorphe. Le second polymère peut être une résine présentant une teneur en solides secs comprise entre 30 et 100 % ainsi qu'une température de transition vitreuse inférieure à 40 DEG C.

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