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US 4,357,409 AGranted
Sulfo-containing adhesive compositions and self-processing photographic products containing same
AssigneeEastman Kodak Company
InventorWayne A. Bowman
Life of this patent
Estimating the term…
Abstract
Adhesive compositions are disclosed which are particularly useful as mask adhesives in instant photographic products. These adhesives provide high strength permanent bonds while greatly improving border quality around image areas after imagewise exposure and development. In addition, they can be heat sealed at relatively low sealing temperatures. These adhesive compositions comprise a polymeric acidic component having at least 3 milliequivalents of acid per gram of component, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked photographic developer. The polymeric acidic component comprises certain sulfo-containing polymers.
Claims23
In an image-recording element comprising:
- (1) a support
- (2) a plurality of layers including an image-recording layer having an image area adapted to be processed by an alkaline processing composition,
- (3) a mask providing an aperture adapted to receive said alkaline processing composition and a border which defines said image area,
- said mask being permanently bonded to said image-recording layer by a high strength adhesive composition which is disposed within said border and is subject to contact with said alkaline processing composition,
- said adhesive composition comprising a polymeric acidic component adapted to neutralize said alkaline processing composition in said border and having at least 3 milliequivalents of acid per gram of component, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked competing photographic developer,
- the improvement wherein said polymeric acidic component comprises an acidic polymer having:
- (a) from about 5 to about 90 percent, by weight, of units derived from a sulfo-containing monomer of the formula (I):
- ##STR7## wherein each of R and R.sub.1 is hydrogen, methyl or halo;
- R.sub.2 is oxy or imino;
- and R.sub.3 is alkylene or arylene, and
- (b) from about 10 to about 95 percent, by weight, of units derived from an additional polymerizable, ethylenically unsaturated monomer.
8 more elements
In a self-processing film unit comprising:
- (1) a support,
- (2) a plurality of layers including an image-recording layer having an image area adapted to be processed by an alkaline processing composition and an image-receiving layer, and
- (3) a mask providing an aperture adapted to receive said alkaline processing composition and a border which defines said image area,
- said mask being permanently bonded to said image-recording layer by a high strength adhesive composition which is disposed within said border and is subject to contact with said alkaline processing composition,
- said adhesive composition comprising a polymeric acidic component adapted to neutralize said alkaline processing composition in said border and having at least 3 milliequivalents of acid per gram of component, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked competing photographic developer,
- the improvement wherein said polymeric acidic component comprises an acidic polymer having:
- (a) from about 5 to about 90 percent, by weight, of units derived from a sulfo-containing monomer of the formula (I):
- ##STR9## wherein each of R and R.sub.1 is hydrogen, methyl or halo;
- R.sub.2 is oxy or imino;
- and R.sub.3 is alkylene or arylene, and
- (b) from about 10 to about 95 percent, by weight, of units derived from an additional polymerizable, ethylenically unsaturated monomer of the formula (II):
- ##STR10## wherein p is 0 or 1;
- each of R.sub.4 and R.sub.5 is hydrogen, methyl or halo;
- R.sub.6 is carbonyl, carbonyloxy or carbonylimino;
- and R.sub.7 is hydrogen or a monovalent aliphatic, alicyclic or aromatic radical, provided that when R.sub.7 is hydrogen and p is 1, R.sub.6 is carbonylimino.
12 more elements
In a self-processing film unit comprising:
- (1) a support,
- (2) a plurality of layers including an image-recording layer having an image area adapted to be processed by an alkaline processing composition and an image-receiving layer, and
- (3) a mask providing an aperture adapted to receive said alkaline processing composition and a border which defines said image area,
- said mask being permanently bonded to said image-recording layer by a high strength adhesive composition which is disposed within said border and is subject to contact with said alkaline processing composition,
- said adhesive composition comprising a polymeric acidic component adapted to neutralize said alkaline processing composition in said border and having at least 3 milliequivalents of acid per gram of component, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked competing photographic developer,
- the improvement wherein said polymeric acidic component includes a carboxy-containing linear addition first polymer, and a second polymer comprising:
- (a) from about 5 to about 90 percent, by weight, of units derived from a sulfo-containing monomer of the formula (I):
- ##STR13## wherein each of R and R.sub.1 is hydrogen, methyl or halo;
- R.sub.2 is oxy or imino;
- and R.sub.3 is alkylene or arylene, and
- (b) from about 10 to about 95 percent, by weight, of units derived from an additional polymerizable, ethylenically unsaturated monomer.
8 more elements
In a self-processing film unit comprising:
- (1) a support,
- (2) a plurality of layers including an image-recording layer having an image area adapted to be processed by an alkaline processing composition and an image-receiving layer, and
- (3) a mask providing an aperture adapted to receive said alkaline processing composition and a border which defines said image area,
- said mask being permanently bonded to said image-recording layer by a high strength adhesive composition which is disposed within said border and is subject to contact with said alkaline processing composition,
- said adhesive composition comprising a polymeric acidic polymer adapted to neutralize said alkaline processing composition in said border and having at least 3 milliequivalents of acid per gram of component, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked competing photographic developer,
- the improvement wherein said polymeric acidic component comprises an acidic polymer having:
- (a) from about 5 to about 50 percent, by weight, of units derived from a sulfo-containing monomer of the formula (I):
- ##STR15## wherein each of R and R.sub.1 is hydrogen, methyl or halo;
- R.sub.2 is oxy or imino;
- and R.sub.3 is alkylene or arylene;
- (b) from about 10 to about 85 percent, by weight, of units derived from a carboxy-containing polymerizable ethylenically unsaturated monomer;
- and
- (c) from about 10 to about 40 percent, by weight, of an additional polymerizable ethylenically unsaturated monomer.
10 more elements
In a self-processing photographic film unit comprising:
- (1) a photosensitive element having an image area and comprising a transparent support having thereon the following layers in sequence:
- an image-receiving layer;
- a light-reflective layer;
- an opaque layer;
- a red-sensitive silver halide emulsion layer having a cyan dye-providing material associated therewith;
- a green-sensitive silver halide emulsion layer having a magenta dye-providing material associated therewith;
- and a blue-sensitive silver halide emulsion having yellow dye-providing material associated therewith;
- (2) a cover sheet superposed over said blue-sensitive silver halide emulsion layer and comprising a transparent support having thereon a neutralizing layer and a timing layer;
- (3) a rupturable pouch containing an alkaline processing composition;
- and
- (4) a mask between said photosensitive element and said cover sheet, said mask providing an aperture adapted to receive said alkaline processing composition and a border which defines said image area,
- said mask being permanently bonded to said image-recording layer by a high strength adhesive composition which is disposed within said border and is subject to contact with said alkaline processing composition,
- said adhesive composition comprising a polymeric acidic component adapted to neutralize said alkaline processing composition in said border and having at least 3 milliequivalents of acid per gram of component, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked competing photographic developer,
- the improvement wherein said polymeric acidic component comprises an acidic polymer having:
- (a) from about 65 to about 85 percent, by weight, of units derived from a sulfo-containing monomer of the formula (I):
- ##STR17## wherein each of R and R.sub.1 is hydrogen or methyl;
- R.sub.2 is imino;
- and R.sub.3 is alkylene, and
- (b) from about 15 to about 35 percent, by weight, of units derived from a monomer of the formula (II):
- ##STR18## wherein each of R.sub.4 and R.sub.5 is hydrogen or methyl;
- R.sub.6 is carbonyloxy or carbonylimino and R.sub.7 is alkyl.
18 more elements
Dependencies are inferred from the claim text.