# US 4,395,477 A · Neutralizing-timing layer for color transfer assemblages containing lactone polymer

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- Number: US 4,395,477 A
- Document ID: US4395477A
- Status: Granted
- Kind: A
- Application number: 06/341,412
- Filed: 1982-01-21
- Granted: 1983-07-26
- Earliest claimed: 1982-01-21
- Assignees: Eastman Kodak Company
- Inventors: Edward P. Abel
- Web page: https://patentgrep.com/patent/US4395477A

## CPC

- G03C 8/52: Bases or auxiliary layers; Substances therefor
- Y10T 428/31786: Of polyester [e.g., alkyd, etc.]
- G03C: PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES (for photomechanical purposes G03F); PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY (photographic processes characterised by the use or manipulation of apparatus classifiable per se in subclass G03B, see G03B; photomechanical production of textured or patterned surfaces G03F; electrophotography, magnetography G03G)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Photographic assemblages, elements, receiving elements and cover sheets are described employing a single neutralizing-timing layer consisting essentially of a carboxy-ester-lactone polymer having the following recurring units: ##STR1## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms; R.sup.1 and R.sup.2 are each independently hydrogen or methyl; x is about 1 to about 15 mole %; and y is about 85 to about 99 mole %.

## Claims

### Claim 1

In a photographic assemblage comprising:
(a) a photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer having associated therewith a dye image-providing material;
(b) a dye image-receiving layer;
(c) neutralizing means for neutralizing an alkaline processing composition; and
(d) timing means located between said neutralizing means and said dye image-receiving layer;
the improvement wherein said neutralizing means and said timing means are provided by a single layer which functions as a combined neutralizing-timing layer and consists essentially of a carboxy-ester-lactone polymer having recurring units of the formula ##STR9## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms;
R.sup.1 and R.sup.2 are each independently hydrogen or methyl;
x is about 1 to about 15 mole %; and
y is about 85 to about 99 mole %.

### Claim 2 (depends on 1)

The assemblage of claim 1 wherein R is n-butyl and each R.sup.1 and each R.sup.2 is hydrogen.

### Claim 3 (depends on 2)

In the assemblage of claim 2, the further improvement wherein said polymer comprises from about 0.5 to about 1.0 milliequivalent acid per gram of polymer.

### Claim 4

In a photographic assemblage comprising:
(a) a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer having associated therewith a dye image-providing material;
(b) a dye image-receiving layer;
(c) an alkaline processing composition and means containing same for discharge within said assemblage;
(d) neutralizing means for neutralizing said alkaline processing composition; and
(e) timing means located between said neutralizing means and said dye image-receiving layer;
the improvement wherein said neutralizing means and said timing means are provided by a single layer which functions as a combined neutralizing-timing layer and consists essentially of a carboxy-ester-lactone polymer having recurring units of the formula ##STR10## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms;
R.sup.1 and R.sup.2 are each independently hydrogen or methyl;
x is about 1 to about 15 mole %; and
y is about 85 to about 99 mole %.

### Claim 5 (depends on 4)

The assemblage of claim 4 wherein R is n-butyl and each R.sup.1 and each R.sup.2 is hydrogen.

### Claim 6 (depends on 5)

In the assemblage of claim 5, the further improvement wherein said polymer comprises from about 0.5 to about 1.0 milliequivalent acid per gram of polymer.

### Claim 7 (depends on 4)

The assemblage of claim 4 wherein:
(a) said dye image-receiving layer is located in said photosensitive element between said support and said silver halide emulsion layer; and
(b) said assemblage also includes a transparent cover sheet over the layer outermost from said support.

### Claim 8 (depends on 7)

The assemblage of claim 7 wherein said transparent cover sheet carries said neutralizing-timing layer.

### Claim 9 (depends on 8)

The assemblage of claim 8 wherein said discharging means is a rupturable container containing said alkaline processing composition and an opacifying agent, said container being so positioned during processing of said assemblage that a compressive force applied to said container will effect a discharge of the container's contents between said transparent sheet and the layer outermost from said support.

### Claim 10 (depends on 4)

The assemblage of claim 4 wherein said support of said photosensitive element is opaque, and said dye image-receiving layer is located on a separate transparent support superposed on the layer outermost from said opaque support.

### Claim 11 (depends on 10)

The assemblage of claim 10 wherein said transparent support has thereon, in sequence, said neutralizing-timing layer and said dye image-receiving layer.

### Claim 12 (depends on 10)

The assemblage of claim 10 wherein said opaque support has thereon, in sequence, said neutralizing-timing layer and said silver halide emulsion layer.

### Claim 13 (depends on 4)

The assemblage of claim 4 wherein said dye image-providing material is a positive-working redox dye-releaser.

### Claim 14 (depends on 13)

The assemblage of claim 13 wherein said positive-working redox dye-releaser is a quinone redox dye-releaser and said photosensitive element contains an incorporated reducing agent.

### Claim 15 (depends on 14)

The assemblage of claim 14 wherein said quinone redox dye-releaser has the formula: ##STR11## wherein: Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible in said photosensitive element during development in said alkaline processing composition;
W represents at least the atoms necessary to complete a quinone nucleus;
r is a positive integer of 1 or 2;
R.sup.3 is an alkyl radical having 1 to about 40 carbon atoms or an aryl radical having 6 to about 40 carbon atoms;
k is a positive integer of 1 to 2 and is 2 when R.sup.3 is a radical of less than 8 carbon atoms; and
Dye is an organic dye or dye precursor moiety.

### Claim 16 (depends on 4)

The assemblage of claim 4 wherein said photosensitive element comprises a support having thereon a red-sensitive silver halide emulsion layer having a cyan dye image-providing material associated therewith, a green-sensitive silver halide emulsion layer having a magenta dye image-providing material associated therewith, and a blue-sensitive silver halide emulsion layer having a yellow dye image-providing material associated therewith.

### Claim 17

An integral photographic assemblage comprising:
(a) a photosensitive element comprising a transparent support having thereon the following layers in sequence: a dye image-receiving layer; an alkaline solution-permeable, light-reflective layer; an alkaline solution-permeable, opaque layer; a red-sensitive, negative-working silver halide emulsion layer having a positive-working redox cyan dye-releaser associated therewith; a green-sensitive, negative-working silver halide emulsion layer having a positive-working redox magenta dye-releaser associated therewith; and a blue-sensitive, negative-working silver halide emulsion layer having a positive-working redox yellow dye-releaser associated therewith;
(b) a transparent sheet superposed over said blue-sensitive silver halide emulsion layer and comprising a transparent support coated with a neutralizing-timing layer consisting essentially of a carboxy-ester-lactone polymer having recurring units of the formula ##STR12## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms;
R.sup.1 and R.sup.2 are each independently hydrogen or methyl;
x is about 1 to about 15 mole %; and
y is about 85 to about 99 mole %; and
(c) a rupturable container containing an alkaline processing composition and an opacifying agent, said container being so positioned during processing of said assemblage that a compressive force applied to said container will effect a discharge of the container's contents between said neutralizing-timing layer and said blue-sensitive silver halide emulsion layer;
said assemblage containing a silver halide developing agent.

### Claim 18 (depends on 17)

The assemblage of claim 17 wherein R is n-butyl and each R.sup.1 and each R.sup.2 is hydrogen.

### Claim 19 (depends on 18)

In the assemblage of claim 18, the further improvement wherein said polymer comprises from about 0.5 to about 1.0 meq. acid per gram of polymer.

### Claim 20

A dye image-receiving element adapted to be permeated by an alkaline processing composition comprising a support having thereon, in sequence, a neutralizing-timing layer and a dye image-receiving layer, and wherein said neutralizing-timing layer consists essentially of a carboxy-ester-lactone polymer having recurring units of the formula ##STR13## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms;
R.sup.1 and R.sup.2 are each independently hydrogen or methyl;
x is about 1 to about 15 mole %; and
y is about 85 to about 99 mole %.

### Claim 21 (depends on 20)

The element of claim 20 wherein R is n-butyl and each R.sup.1 and each R.sup.2 is hydrogen.

### Claim 22 (depends on 21)

In the element of claim 21, the further improvement wherein said polymer comprises from about 0.5 to about 1.0 milliequivalent acid per gram of polymer.

### Claim 23

A photographic element adapted to be permeated by an alkaline processing composition comprising a support having thereon, in sequence, a neutralizing-timing layer and at least one photosensitive silver halide emulsion layer having associated therewith a dye image-providing material, and wherein said neutralizing-timing layer consists essentially of a carboxy-ester-lactone polymer having recurring units of the formula ##STR14## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl wherein having from 7 to about 12 carbon atoms;
R.sup.1 and R.sup.2 are each independently hydrogen or methyl;
x is about 1 to about 15 mole %; and
y is about 85 to about 99 mole %.

### Claim 24 (depends on 23)

The element of claim 23 wherein R is n-butyl and each R.sup.1 and each R.sup.2 is hydrogen.

### Claim 25 (depends on 24)

In the element of claim 24, the further improvement wherein said polymer comprises from about 0.5 to about 1.0 milliequivalent acid per gram of polymer.

### Claim 26 (depends on 23)

The element of claim 23 wherein said dye image-providing material is a positive-working redox dye-releaser.

### Claim 27 (depends on 26)

The element of claim 26 wherein said positive-working redox dye-releaser is a quinone redox dye-releaser and said photosensitive element contains an incorporated reducing agent.

### Claim 28 (depends on 27)

The element of claim 27 wherein said quinone redox dye-releaser has the formula: ##STR15## wherein: Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible in said photosensitive element during development in said alkaline processing composition;
W represents at least the atoms necessary to complete a quinone nucleus;
r is a positive integer of 1 or 2;
R.sup.3 is an alkyl radical having 1 to about 40 carbon atoms or an aryl radical having 6 to about 40 carbon atoms;
k is a positive integer of 1 to 2 and is 2 when R.sup.3 is a radical of less than 8 carbon atoms; and
Dye is an organic dye or dye precursor moiety.

### Claim 29 (depends on 23)

The element of claim 23 which comprises a red-sensitive silver halide emulsion layer having a cyan dye image-providing material associated therewith, a green-sensitive silver halide emulsion layer having a magenta dye image-providing material associated therewith, and a blue-sensitive silver halide emulsion layer having a yellow dye image-providing material associated therewith.