Silver halide emulsions containing coupler solvents

Claim 2

In a method for forming heat stable color photographic records obtained by exposing and developing a color photographic element containing one or more light sensitive silver halide emulsion layers having at least one photographic coupler, the improvement comprising utilizing as permanent coupler solvent at least one compound of the formulae

Claim 3

In a method for forming heat stable color photographic records obtained by exposing and developing a color photographic element containing one or more light sensitive silver halide emulsion layers having at least one photographic coupler, the improvement comprising utilizing as permanent coupler solvent at least one compound of the formulae

Claim 4

In a method for forming heat stable color photographic records obtained by exposing and developing a color photographic element containing one or more light sensitive silver halide emulsion layers having at least one photographic coupler, the improvement comprising utilizing as permanent coupler solvent at least one compound of the formula

Claim 5

A method of claim 1 wherein the permanent coupler solvent is a member selected from the group consisting of pentaerythritol tetrabenzoate; 1,2,2,3-tetracarbethoxy propane; pentaerythritol tetralaurate; tris (2,2,4-trimethylpentyl) trimellitate; 1,2,4-benzenetricarboxylic acid, tris (2- ethylhexyl)ester; 2,2,4-trimethyl-1,3-pentanediol isobutyrate, and a 2,2,4-trimethylpentanediol-1,3-adipic acid polyester terminated with isobutyric acid.

Claim 6

A method of claim 1 wherein the solvent system contains 1-isopropyl-2,2-dimethyltrimethylene-1,3-diisobutyrate in a ratio of about 1 part by weight solvent-to-1 part by weight coupler.

Claim 7

A light sensitive photographic silver halide emulsion having dispersed therein finely divided particles containing at least one color photographic coupler compound in a solvent system comprising at least one compound of the formulae

Claim 8

A light sensitive photographic silver halide emulsion of claim 8 wherein the solvent system additionally contains a supplemental amount of a phthalic acid alkyl ester.

Claim 9

A light sensitive photographic silver halide emulsion of claim 8 wherein the color photographic coupler is a phenolic or Alpha -naphtholic cyan dye-forming coupler.

Claim 10

A light sensitive photographic silver halide emulsion of claim 8 wherein the color photographic coupler is an open chain ketomethylene yellow dye-forming coupler.

Claim 11

A light sensitive photographic silver halide emulsion of claim 8 wherein the color photographic coupler is a 5-pyrazolone magenta dye-forming coupler.

Claim 12

A light sensitive photographic silver halide emulsion having dispersed therein finely divided particles having at least one color photographic coupler and a permanent coupler solvent of the formulae

Claim 13

A light sensitive photographic silver halide emulsion having dispersed therein finely divided particles containing at least one color photographic coupler compound and a permanent coupler solvent of the formulae

Claim 14

A light sensitive photographic silver halide emulsion having dispersed therein finely divided particles containing at least one photographic coupler and a permanent coupler solvent of the formula

Claim 15

A light sensitive photographic silver halide emulsion of claim 8 having dispersed therein finely divided particles containing at least one coupler compound and a permanent coupler solvent selected from the group consisting of pentaerythritol tetrabenzoate; 1,2,2,3-tetracarbethoxy propane; pentaerythritol tetralaurate; tris (2,2,4-trimethylpentyl)trimellitate; 1,2,4-benzenetricarboxylic acid, tris (2-ethylhexyl) ester; 2,2,4-trimethyl-1,3-pentanediol isobutyrate, and a 2,2,4-trimethylpentanediol-1,3-adipic acid polyester terminated with isobutyric acid.

Claim 16

A light sensitive photographic silver halide emulsion of claim 8 wherein the solvent system contains 1-isopropyl-2,2-dimethyltrimethylene-1,3-diisobutyrate in a ratio of about 1 part by weight solvent-to-1 part by weight coupler.

Claim 17

A light-sensitive photographic silver halide emulsion of claim 8 wherein the solvent system contains pentaerythritol tetrabenzoate in a ratio of about 1 part by weight solvent-to-1 part by weight couplers.

Claim 18

A color photographic element comprising a support and at least one light-sensitive photographic silver halide emulsion layer applied thereto, said emulsion layer having dispersed therein finely divided particles containing a coupler compound in a solvent system comprising at least one compound of the formulae

Claim 19

A color photographic element of claim 19 wherein the solvent system additionally contains a supplemental amount of a phthalic acid alkyl ester.

Claim 20

A color photographic element of claim 19 wherein the coupler compound is a phenolic-or Alpha -naphtholic-cyan dye-forming coupler.

Claim 21

A color photographic element of claim 19 wherein the coupler compound is an open chain ketomethylene yellow dye-forming coupler.

Claim 22

A color photographic element of claim 19 wherein the coupler compound is a 5-pyrazolone magenta dye-forming coupler.

Claim 23

A color photographic element comprising a support and at least one light sensitive photographic silver halide emulsion layer applied thereto, said emulsion layer having dispersed therein finely divided particles containing a coupler compound in a solvent system comprising at least one compound of the formulae

Claim 24

A color photographic element comprising a support and at least one light sensitive photographic silver halide emulsion layer applied thereto, said emulsion layer having dispersed therein finely divided particles containing a coupler compound in a solvent system comprising at least one compound of the formulae

Claim 25

A color photographic element comprising a support and at least one light sensitive photographic silver halide emulsion layer applied thereto, Said emulsion layer having dispersed therein finely divided particles containing a coupler compound in a solvent system comprising at least one compound of the formula

Claim 26

A color photographic element comprising a support layer and at least one light sensitive photographic silver halide emulsion layer applied thereto, said emulsion layer having dispersed therein finely divided particles containing at least one coupler compound and a permanent coupler solvent selected from the group consisting of pentaerythritol tetrabenzoate; 1,2,2,3-tetracarbethoxy propane; pentaerythritol tetralaurate; tris (2,2, 4-trimethylpentyl)trimellitate; 1,2,4-benzenetricarboxylic acid, tris (2-ethylhexyl)ester; 2,2,4-trimethyl-1,3-pentanediol isobutyrate; and a 2,2,4-trimethylpentanediol-1,3-adipic acid polyester terminated with isobutyric acid.

Claim 27

A color photographic element of claim 18 wherein the solvent system contains 1-isopropyl-2,2-dimethyl-trimethylene-1,3-diisobutyrate in a ratio of about 1 part by weight solvent-to-1 part by weight coupler.

Claim 28

A color photographic element of claim 18 wherein the solvent system contains pentaerythritol tetrabenzoate in a ratio of about 1 part by weight solvent-to-1 part by weight coupler.