Copolymerized anthraquinone-polyester color concentrates

Details Copolymerized anthraquinone-polyester color concentrates Copolymerized anthraquinone-polyester color concentrates

C - Chemistry, Metallurgy

08

G

C08G 63/685 (2006.01) C08J 3/22 (2006.01) C09B 1/28 (2006.01) C09B 69/10 (2006.01)

Patent

CA 2064802

Disclosed are color concentrate compositions which comprise a polyester having copolymerized therein at least 0.5 weight percent of an anthraquinone colorant compound having formula (I), wherein AQ is a 1,5- or 1,8-anthraquinonylene radical; R1 and R2 are the same or different and are unsubstituted or substituted alkyl, cycloalkyl or aryl; and X is a group reactive with at least one of the functional groups of the monomers from which the polyester is prepared. Amorphous polyesters and par- tially-crystalline polyesters are preferred embodiments of the color concentrates. Also disclosed are colored semicrystalline powders which may be obtained from the amorphous and partially-crystalline color concentrates by a dissolution-crystalli- zation-precipitation procedure.

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