Temporary barrier layer for photographic element

Claim 2

A photographic element comprising a support having thereon at least one silver halide emulsion layer, a neutralizing layer, and a temporary barrier layer separating the silver halide emulsion layer from the neutralizing layer, said barrier layer including a polymer comprising randomly repeating units of the formula: ##STR4## wherein R 1 and R 2 each independently represents hydrogen or methyl, R 3 represents alkyl of from 1 to 4 carbon atoms, L represents a divalent alkyl linking group of from 2 to 8 carbon atoms, J represents the residue of an organic cross-linking compound having at least one other copolymerizable carbon-carbon double bond, G represents recurring units derived from one or more other polymerized ethylenically unsaturated comonomers, x represents 50 to 80 weight percent, y represents 1 to 40 weight percent, and z represents from 10 to 25 weight percent.

Claim 3

A photographic element according to claim 1 wherein the polymer comprises randomly recurring units of the formula: ##STR5## wherein Z is a linking group, R 4 , R 5 , and R 6 are individually hydrogen or methyl, R 7 represents recurring units in the polymer of one or more other polymerized addition polymerizable comonomers, n is 1 or 2, x represents 50 to 89 weight percent, y represents 1 to 40 weight percent, and z represents from 10 to 25 weight percent.

Claim 4

A photographic element according to claim 1 wherein J is selected from the group consisting of ethylenebis(iminocarbonyl), ethylenebis(oxycarbonyl), and phenylene.

Claim 5

In a photographic element comprising at least open silver halide emulsion layer, a dye image-providing layer, a dye image-receiving layer, and a neutralizing layer, said element containing a temporary barrier layer located between the neutralizing layer and the silver halide emulsion layer, said neutralizing layer providing a pH of 11 or less to the silver halide emulsion layer, the improvement wherein the barrier layer includes a polymer comprising randomly repeating units of the formula: ##STR6## wherein R 1 and R 2 each independently represents hydrogen or methyl, R 3 represents alkyl of from 1 to 4 carbon atoms, L represents an divalent alkyl linking group of from 2 to 8 carbon atoms, J represents the residue of an organic cross-linking compound having at least one other copolymerizable carbon-carbon double bond, G represents recurring units derived from one or more other polymerized ethylenically unsaturated comonomers, x represents 50 to 8 weight percent, y represents 1 to 40 weight percent, and z represents from 10 to 25 weight percent.

Claim 6

In a photographic element comprising at least open silver halide emulsion layer, a dye image-providing layer, a dye image-receiving layer, and a neutralizing layer, said element containing a temporary barrier layer located between the neutralizing layer and the silver halide emulsion layer, said neutralizing layer providing a pH of 11 or less to the silver halide emulsion layer, the improvement wherein the barrier layer includes a polymer comprising randomly repeating units of the formula: ##STR6## wherein R 1 and R 2 each independently represents hydrogen or methyl, R 3 represents alkyl of from 1 to 4 carbon atoms, L represents an divalent alkyl linking group of from 2 to 8 carbon atoms, J represents the residue of an organic cross-linking compound having at least one other copolymerizable carbon-carbon double bond, G represents recurring units derived from one or more other polymerized ethylenically unsaturated comonomers, x represents 50 to 8 weight percent, y represents 1 to 40 weight percent, and z represents from 10 to 25 weight percent.

Claim 7

A photographic element according to claim 4 wherein the polymer comprises randomly recurring units of the formula: ##STR7## wherein Z is a linking group, R 4 , R 5 , and R 6 are individually hydrogen or methyl, R 7 represents recurring units in the polymer of one or more other polymerized addition polymerizable comonomers, n is 1 or 2, x represents 50 to 89 weight percent, y represents 1 to 40 weight percent, and z represents from 10 to 25 weight percent.

Claim 8

A photographic element according to claim 4 wherein J is selected from the group consisting of ethylenebis(iminocarbonyl), ethylenebis(oxycarbonyl), and phenylene.