Polyesters containing copolymerized substituted 1,4-bis(2,6-dialkylanilino)-9, 10-anthraquinones as colorants
AssigneeEastman Chemical Company
InventorsMax Allen Weaver, Brian Edison Maxwell, Gerry Foust Rhodes, James John Krutak, Sr.
Life of this patent
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Abstract
A colored polyester copolymer comprising the reaction product of at least one linear thermoplastic polyester precursor and at least ten parts per million by weight of a residue of at least one 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant. A composition may be formed comprising the copolymer in admixture with at least one thermoplastic polymer. The copolymer may be formed by reacting at least one thermoplastic polyester precursor with a 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant which has a polyester reactive group.
Claims20
A colored polyester copolymer which comprises the reaction product of at least one linear thermoplastic polyester precursor and at least ten parts per million by weight of a residue of at least one 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant having the formula:
- ##STR25## wherein:
- R and R.sub.1 are independently C.sub.1 -C.sub.6 alkyl;
- R.sub.2 groups are independently selected from the group consisting of hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, hydroxy, C.sub.1 -C.sub.6 alkoxy, thiocyano or C.sub.1 -C.sub.6 alkylthio;
- R.sub.3 groups are independently selected from the group consisting of substituted or unsubstituted C.sub.1 -C.sub.6 alkylthio, substituted or unsubstituted C.sub.1 -C.sub.6 alkylsulfonyl, substituted or unsubstituted C.sub.1 -C.sub.6 alkylsulfinyl, substituted or unsubstituted phenylthio, substituted or unsubstituted phenylsulfinyl, substituted or unsubstituted phenylsulfonyl, 1,2,4-triazol-5-yl, or substituted or unsubstituted heteroarylthio, wherein at least one R.sub.3 comprises at least one polyester reactive group capable of reacting with the polyester precursor to form a colored polyester copolymer.
A composition which comprises at least one thermoplastic polymer in admixture with a colored polyester copolymer which copolymer comprises the reaction product of at least one linear thermoplastic polyester precursor and at least ten parts per million by weight of a residue of at least one 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant having the formula:
- ##STR26## wherein:
- R and R.sub.1 are independently C.sub.1 -C.sub.6 alkyl;
- R.sub.2 groups are independently selected from the group consisting of hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, hydroxy, C.sub.1 -C.sub.6 alkoxy, thiocyano or C.sub.1 -C.sub.6 alkylthio;
- R.sub.3 groups are independently selected from the group consisting of substituted or unsubstituted C.sub.1 -C.sub.6 alkylthio, substituted or unsubstituted C.sub.1 -C.sub.6 alkylsulfonyl, substituted or unsubstituted C.sub.1 -C.sub.6 alkylsulfinyl, substituted or unsubstituted phenylthio, substituted or unsubstituted phenylsulfinyl, substituted or unsubstituted phenylsulfonyl, 1,2,4-triazol-5-yl, or substituted or unsubstituted heteroarylthio, wherein at least one R.sub.3 comprises at least one polyester reactive group capable of reacting with the polyester precursor to form a colored polyester copolymer.
A method of preparing a colored polyester copolymer which comprises reacting at least one linear thermoplastic polyester precursor and at least ten parts per million by weight of a residue of at least one 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant having the formula:
- ##STR27## wherein:
- R and R.sub.1 are independently C.sub.1 -C.sub.6 alkyl;
- R.sub.2 groups are independently selected from the group consisting of hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, hydroxy, C.sub.1 -C.sub.6 alkoxy, thiocyano or C.sub.1 -C.sub.6 alkylthio;
- R.sub.3 groups are independently selected from the group consisting of substituted or unsubstituted C.sub.1 -C.sub.6 alkylthio, substituted or unsubstituted C.sub.1 -C.sub.6 alkylsulfonyl, substituted or unsubstituted C.sub.1 -C.sub.6 alkylsulfinyl, substituted or unsubstituted phenylthio, substituted or unsubstituted phenylsulfinyl, substituted or unsubstituted phenylsulfonyl, 1,2,4-triazol-5-yl, or substituted or unsubstituted heteroarylthio, wherein at least one R.sub.3 comprises at least one polyester reactive group capable of reacting with the polyester precursor to form a colored polyester copolymer under polyester forming conditions.
Dependencies are inferred from the claim text.