US 5,032,670 A · Copolymerized anthraquinone-polyester color concentrates

Abstract

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 ##STR1## wherein AQ is a 1,5- or 1,8-anthraquinonylene radical; R.sup.1 and R.sup.2 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.

Claims28

Dependent claims

A color concentrate comprising a polyester having copolymerized therein at least 0.5 weight percent, based on the weight of the concentrate, of the residue of one or more anthraquinone compounds having the formula ##STR21## wherein AQ is a 1,5- or 1,8-anthraquinonylene radical;

R.sup.1 and R.sup.2 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.

An amorphous color concentrate comprising an amorphous polyester having copolymerized therein at least 0.5 weight percent, based on the weight of the concentrate, of the residue of one or more anthraquinone compounds having the formula ##STR27## wherein AQ is a 1,5- or 1,8-anthraquinonylene 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.

A partially-crystalline polyester color concentrate comprised of:

(i) diacid residues consisting of at least 80 mole percent terephthalic acid residues, 2,6-naphthalenedicarboxylic acid residues, 1,3-cyclohexanedicarboxylic acid residues, 1,4-cyclohexanedicarboxylic acid residues or a mixture thereof;
(ii) diol residues consisting of at least 50 mole percent of residues having the formula --O--(CH.sub.2).sub.m --O-- wherein m is 4 to 12;
and
(iii) residues of one or more anthraquinone compounds having the formula ##STR35## wherein AQ is a 1,5-or 1,8-anthraquinonylene radical;
R.sup.1 and R.sup.2 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, provided that component (iii) constitutes at least 0.5 weight percent of the concentrate.

4 more elements

A colored semicrystalline powder having an average particle size of less than 30 microns comprising a normally-amorphous polyester which has been modified by dissolution-crystallization-precipitation to impart crystallinity thereto having copolymerized therein at least 0.5 weight percent, based on the weight of the concentrate, of the residue of one or more anthraquinone compounds having the formula ##STR40## wherein AQ is a 1,5- or 1,8-anthraquinonylene radical;

R.sup.1 and R.sup.2 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.

A colored semicrystalline powder having an average particle size of less than 30 microns comprising a partially-crystalline polyester which had been modified by dissolution-crystallization-precipitation to impart increased crystallinity thereto comprised of:

(i) diacid residues consisting of at least 80 mole percent terephthalic acid residues, 2,6-naphthalenedicarboxylic acid residues, 1,3-cyclohexanedicarboxylic acid residues, 1,4-cyclohexanedicarboxylic acid residues or a mixture thereof;
(ii) diol residues consisting of at least 50 mole percent of residues having the formula --O--(CH.sub.2).sub.m --O-- wherein m is 4 to 12;
and
(iii) residues of one or more anthraquinone compounds having the formula ##STR48## wherein AQ is a 1,5- or 1,8-anthraquinonylene radical;
R.sup.1 and R.sup.2 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, provided that component (iii) constitutes at least 0.5 weight percent of the concentrate.

4 more elements

Dependencies are inferred from the claim text.

Copolymerized anthraquinone-polyester color concentrates

Life of this patent

Copolymerized anthraquinone-polyester color concentrates

Life of this patent

Abstract

Claims28