Polyesters colored with the residue of heat stable anthraquinone

Details Polyesters colored with the residue of heat stable anthraquinone Polyesters colored with the residue of heat stable anthraquinone

1989-08-31

1991-03-12

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528220, 528226, 528228, 528229, 528291, 528298, 528302, 528308, 5283086, 528332, 528425, 525437, 525443, 525471, 524765, 524770, 8676, C08G 6320

Patent

active

049994182

ABSTRACT:
Disclosed are colored polyester compositions comprising a polyester having reacted therewith or copolymerized therein at least one residue of an anthraquinone compound having the formula ##STR1## wherein AQ is the residue of a 9,10-anthraquinone radical; R.sup.1 and R.sup.2 are the same or different and are unsubstituted or substituted alkyl, cycloalkyl or aryl; X is a group reactive with at least one of the functional groups of the monomers from which the polyester is prepared; and n is 1 or 2. The described anthraquinone compounds possess improved thermal stability and thus are not decomposed at the high temperatures at which polyesters are prepared. Also disclosed are shaped articles, particularly containers, fabricated from the colored polyester compositions.

REFERENCES:
patent: 3689501 (1972-09-01), Weaver et al.
patent: 4267306 (1981-05-01), Davis et al.
patent: 4359570 (1982-11-01), Davis et al.
patent: 4403092 (1983-09-01), Davis et al.

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