Heat resistant dyes for polyester film products

Claim 2

A COLORED POLYESTER FILM ARTICLE HAVING A THICKNESS OF FROM ABOUT 0.5 TO ABOUT 30 MILS, AN OPTICAL DENSITY OF AT MOST ABOUT 0.5, AND A UNIFORM, APPROXIMATELY NEUTRAL COLOR; SAID FILM ARTICLE CONTAINING A BLEND OF DYES, WHICH BLEND CONSISTS ESSENTIALLY OF THE RED DYE 2,3-DIHYDRO-3-METHYL-2-OXO-6-PTOLUIDINO-3-AZABENZANTHRONE AND THE GREEN DYE 1,4DIHYDROXY-5,8-DI-P-TOLUIDINO ANTHRAQUINONE.

Claim 3

A article as in claim 1, wherein said polyester consists essentially of poly(ethylene terephthalate).

Claim 4

An article as in claim 1, wherein said polyester consists essentially of poly(1,4-di-methylenecyclohexylene terephthalate).

Claim 5

A colored polyester article, comprising a blend of (1) at least one azabenzanthrone or diazabenzanthrone dye selected from the group of dyes having structures:

Claim 6

A colored polyester article, comprising a blend of (1) at least one azabenzanthrone or diazabenzanthrone dye selected from the group of dyes having structures:

Claim 7

An article as in claim 4, wherein said green dye is 1,4-dihydroxy-5,8-di-p-toluidino anthraquinone and said diazabenzanthrone dye is

Claim 8

An article as in claim 5, wherein said diazabenzanthrone dye is 6-amino-4-p-toluidino-1,3-diazabenzanthrone, 4-p-chloroanilino-1,3-diazabenzanthrone, or 4-anilino 6-(N-(2,4-dichlorobenzoyl)amino)-1,3-diazabenzanthrone.

Claim 9

An article as in claim 4, wherein said green dye is 1,4-dihydroxy-5,8-di-p-toluidino anthraquinone and said azabenzanthrone dye is

Claim 10

An article as in claim 7, wherein said green dye is 1,4-dihydroxy-5,8-di-p-toluidino anthraquinone and said azabenzanthrone dye is 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-p-toluenesulfonamido-3 -azabenzanthrone, 2,3-dihydro-3-methyl-2-oxo-1-p-toluidino-3-azabencanthrone, 2,3-dihydro-6-(N-3-(dimethylamino)-propylamino)-3-methyl-2-oxo-1 phenyl-3-azabenzanthrone, 2,3-dihydro-3-methyl-6-(p-(1-methyl-butyl)anilino)-2-oxo-1-phenyl-3 -azabenzanthrone, 2,3-dihydro-6-(2,4-dimethyl-anilino)-1-ethoxycarbonyl-3-methyl-2-oxo-3 -azabenzanthrone, 2,3-dihydro-6-p-chloroanilino-1-cyano-3-methyl-2-oxo-3-azabenzanthrone, 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-p-toluidino-3-azabenzanthrone, 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-m-toluidino-3-azabenzanthrone, 2, 3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-o-toluidino-3-azabenzanthrone, 2,3-dihydro-3-methyl-2-oxo-6-p-toluidino-3-azabenzanthrone, 2,3-dihydro-6-(4''t-amylanilino)-1-ethoxycarbonyl-3-methyl-2-oxo-3 -azabenzanthrone, or 2,3-dihydro-3-methyl-6-(2,4-dimethylanilino)-1-phenyl-3-azabenzanthrone.

Claim 11

An article as in claim 4, wherein said green dye is 1,4-di-butyl anilino-5,8-dihydroxy anthraquinone and said diazabenzanthrone dye is

Claim 12

An article as in claim 9 wherein said diazabenzanthrone dye is 6-amino-4-p-toluidino-1,3-diazabenzanthrone, 4-p-chloroanilino-1,3-diazabenzanthrone or 4-anilino-6-(N-(2,4-dichlorobenzoyl) amino)-1,3-diazabenzanthrone.

Claim 13

An article as in claim 4, wherein said polyester is a linear polyester of repeating polymethylene glycol and diacyl radicals, the number of carbon atoms in the polymethylene groups being from 2 to 8.

Claim 14

An article as in claim 4, wherein said polyester is poly(ethylene terephthalate).

Claim 15

An article as in claim 4, wherein said polyester is poly(1, 4-dimethylenecyclohexylene terephthalate).

Claim 16

A fiber article according to claim 4.

Claim 17

A molded article according to claim 4.

Claim 18

A colored polyester article having an approximately neutral color; said article comprising the red dye 2,3-dihydro-3-methyl-2-oxo-6-p-toluidino-3-azabenzanthrone and the green dye 1,4-dihydroxy-5,8-di-p-toluidino anthraquinone.

Claim 19

A colored polyester article having an approximately neutral color; said article comprising the red dye 2,3-dihydro-3-methyl-2-oxo-6-p-toluidino-3-azabenzanthrone and the green dye 1,4-dihydroxy-5,8-di-p-toluidino anthraquinone.

Claim 20

An article according to claim 16 containing from about 40 to about 600 parts of said red dye and from about 60 to about 1,000 parts of said green dYe per million parts of said colored polyester.

Claim 21

A film article comprising a colored polyester film substrate; said substrate comprising at least two different types of dyes selected from (a) the following group A azabenzanthrone dyes or group B diazabenzanthrone dyes: A. 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-toluenesulfonamido-3 -azabenzanthrone, 2,3-dihydro-3-methyl-2-oxo-1-p-toluidino-3-azabenzanthrone, 2,3-dihydro-6-(N-3-(dimethylamino)-propylamino)-3-methyl-2-oxo-1-phenyl-3 -azabenzanthrone, 2,3-dihydro-3-methyl-6-(p-(1-methylbutyl)anilino)-2-oxo-1-phenyl-3 -azabenzanthrone, 2,3-dihydro-6-(2,4-dimethyl-anilino)-1-ethoxycarbonyl-3-methyl-2-oxo-3 -azabenzanthrone, 2,3-dihydro-6-p-chloroanilino-1-cyano-3-methyl-2-oxo-3-azabenzanthrone, 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-p-toluidino-3-azabenzanthrone, 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-m-toluidino-3-azabenzanthrone, 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-o-toluidino-3-azabenzanthrone, 2,3-dihydro-3-methyl-2-oxo-6-p-toluidino-3-azabesnzanthrone, 2,3-dihydro-6-(4''-t-amylanilino)-1-ethoxycarbonyl-3-methyl-2-oxo-3 -azabenzanthrone or 2,3-dihydro-3-methyl-6-(2,4-dimethylanilino)-1-phenyl-3-azabenzanthrone, or B 6-amino-4-p-toluidino-1,3-diazabenzanthrone, 4-p-chloroanilino-1,3-diazabenzanthrone, or 4-anilino-6-(N-(2,4-dichlorobenzoyl)amino)-1,3-diazabenzanthrone, and at least one green dye selected from the group consisting of 1, 4-dihydroxy-5,8-di-p-toluidino anthraquinone and 1,4-di-p-butyl anilino-5,8-dihydroxy anthraquinone, said green dye being 1,4-dihydroxy-5,8-di-p-toluidino anthraquinone when said azabenzanthrone or diazabenzanthrone dye is selected from group (A) or (B), when said green dye is 1,4-di-p-butyl anilino-5,8-dihydroxy anthraquinone, said azabenzanthrone or diazabenzanthrone dye is selected from group (B).

Claim 22

A film article comprising a colored polyester film substrate; said substrate comprising at least two different types of dyes selected from (a) the following group A azabenzanthrone dyes or group B diazabenzanthrone dyes: A. 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-toluenesulfonamido-3 -azabenzanthrone, 2,3-dihydro-3-methyl-2-oxo-1-p-toluidino-3-azabenzanthrone, 2,3-dihydro-6-(N-3-(dimethylamino)-propylamino)-3-methyl-2-oxo-1-phenyl-3 -azabenzanthrone, 2,3-dihydro-3-methyl-6-(p-(1-methylbutyl)anilino)-2-oxo-1-phenyl-3 -azabenzanthrone, 2,3-dihydro-6-(2,4-dimethyl-anilino)-1-ethoxycarbonyl-3-methyl-2-oxo-3 -azabenzanthrone, 2,3-dihydro-6-p-chloroanilino-1-cyano-3-methyl-2-oxo-3-azabenzanthrone, 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-p-toluidino-3-azabenzanthrone, 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-m-toluidino-3-azabenzanthrone, 2,3-dihydro-1-ethoxycarbonyl-3-methyl-2-oxo-6-o-toluidino-3-azabenzanthrone, 2,3-dihydro-3-methyl-2-oxo-6-p-toluidino-3-azabesnzanthrone, 2,3-dihydro-6-(4''-t-amylanilino)-1-ethoxycarbonyl-3-methyl-2-oxo-3 -azabenzanthrone or 2,3-dihydro-3-methyl-6-(2,4-dimethylanilino)-1-phenyl-3-azabenzanthrone, or B 6-amino-4-p-toluidino-1,3-diazabenzanthrone, 4-p-chloroanilino-1,3-diazabenzanthrone, or 4-anilino-6-(N-(2,4-dichlorobenzoyl)amino)-1,3-diazabenzanthrone, and at least one green dye selected from the group consisting of 1, 4-dihydroxy-5,8-di-p-toluidino anthraquinone and 1,4-di-p-butyl anilino-5,8-dihydroxy anthraquinone, said green dye being 1,4-dihydroxy-5,8-di-p-toluidino anthraquinone when said azabenzanthrone or diazabenzanthrone dye is selected from group (A) or (B), when said green dye is 1,4-di-p-butyl anilino-5,8-dihydroxy anthraquinone, said azabenzanthrone or diazabenzanthrone dye is selected from group (B).