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; 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 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.
所公开的色素浓缩物组合物包含一种聚酯,其中共聚有至少 0.5 重量百分比的
蒽醌着色剂化合物,其式如下
其中 AQ 是 1,5- 或 1,8-
蒽醌基;R1 和 R2 相同或不同,是未取代或取代的烷基、环烷基或芳基;X 是与制备聚酯的单体中至少一个官能团反应的基团。无定形聚酯和部分结晶聚酯是彩色浓缩物的优选实施方案。此外,还公开了彩色半结晶粉末,可通过溶解-结晶-沉淀程序从无定形和部分结晶彩色浓缩物中获得。