Polyesters containing copolymerized, anthraquinone colorant...

Details Polyesters containing copolymerized, anthraquinone colorant... Polyesters containing copolymerized, anthraquinone colorant...

C - Chemistry, Metallurgy

08

G

402/33

C08G 63/68 (2006.01) C08G 63/688 (2006.01) C09B 62/525 (2006.01)

Patent

CA 1191298

Abstract Disclosed are colored polyesters having copolymerized therein anthraquinone derivative colorants containing one or more sulfonamido groups. The colored polymers are fast to light and the colorant moieties are not extractable therefrom, rendering from the colored polymers particularly suit- able for use in food containers such as molded beverage bottles. The inherent viscosities of these polymers can be varied widely as is well known in the art for different applications. The copolymerizable colorants have the formula Image wherein R1 and R2 are each hydrogen or 1-3 sub- stituents independently selected from alkyl, alkoxy, and the like; and T represents 1-4 independently selected radicals of the formula Image wherein R3 is hydrogen or 1-3 substituents such as alkyl, alkoxy and the like; Z is a divalent linking group such as -NH-, -S-, -O-, and alkoxycarbonyl; and Q is hydroxy, carboxy or alkoxycarbonyl.

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