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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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
01.03.1991
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Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: CA19902064802 |