COPOLYMERIZED ANTHRAQUINONE-POLYESTER COLOR CONCENTRATES

Disclosed are color concentrate compositions which comprise a polyester having copolymerized therein at least 0.5 weight percent of an anthraquinone colorant compound having the formula wherein AQ is a 1,5- or 1,8-anthraquinonylene radical; R and R are the same or different and are unsubstituted or...

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Bibliographic Details
Main Authors KRUTAK, JAMES J, OLDFIELD, TERRY A, PARHAM, WILLIAM W, WEAVER, MAX A, COATES, CLARENCE A., JR
Format Patent
LanguageEnglish
Published 01.03.1991
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Summary:Disclosed are color concentrate compositions which comprise a polyester having copolymerized therein at least 0.5 weight percent of an anthraquinone colorant compound having the formula wherein AQ is a 1,5- or 1,8-anthraquinonylene radical; R and R 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 partially-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-crystallization-precipitation procedure.
Bibliography:Application Number: CA19902064802