US4762759A
Expired / Lapsed
US
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Image-receiving material with siloxane, colloidal silica and gelatin for silver complex diffusion transfer
Assignee: Agfa Gevaert NV
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Filing: 1986-11-07
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Granted: 1988-08-09
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Expires: 2006-11-07
Abstract
Abstract An image-receiving material adapted for silver complex diffusion transfer processing and for forming a laminate, e.g. serving as an identification document, wherein said material comprises a hydrophobic resin support or resin-coated paper support directly coated on a resin surface thereof with a DTR-image receiving layer containing developing nuclei in a binder medium and comprising in percent by weight on its total weight the following ingredients: 2% to 45% of gelatin, 25% to 85% of colloidal silica, 1.0% to 50% of a copolymer consisting of copolymerized ethylene and an alpha,beta-unsaturated carboxylic acid monomer in free acid or salt form, wherein the polymerized ethylene content is not lower than 80% by weight, and 0.2% to 35% of a siloxane forming a reaction product through its siloxane group with the colloidal silica, the dry coverage of the image-receiving layer being in the range of 1 g to 15 g per m2.
Inventors
- 👤 Leon L. Vermeulen
- 👤 Ludovicus H. Vervloet
- 👤 Willy P. De Smedt
- 👤 Piet Kok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:39
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/24; G03C8/26; G03C8/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
132 words
An image-receiving material adapted for silver complex diffusion transfer processing, wherein said material comprises a hydrophobic resin support or resin-coated paper support directly coated on a resin surface thereof with a DTR-image receiving layer containing developing nuclei in a binder medium and comprising in percent by weight on its total weight the following: 2% to 45% of gelatin, 25% of 85% of colloidal silica, 1.0% to 50% of a copolymer consisting of copolymerized ethylene and an alpha,beta-unsaturated carboxylic acid monomer in free acid or salt form, wherein the polymerized ethylene content is not lower than 80% by weight, and 0.2% to 35% of a siloxane forming a reaction product with said colloidal silica, the dry coverage of the image-receiving layer being in the range of 1 g to 15 g per m2.
Claim 2
Dependent Claim
132 words
An image-receiving material adapted for silver complex diffusion transfer processing, wherein said material comprises a hydrophobic resin support or resin-coated paper support directly coated on a resin surface thereof with a DTR-image receiving layer containing developing nuclei in a binder medium and comprising in percent by weight on its total weight the following: 2% to 45% of gelatin, 25% of 85% of colloidal silica, 1.0% to 50% of a copolymer consisting of copolymerized ethylene and an alpha,beta-unsaturated carboxylic acid monomer in free acid or salt form, wherein the polymerized ethylene content is not lower than 80% by weight, and 0.2% to 35% of a siloxane forming a reaction product with said colloidal silica, the dry coverage of the image-receiving layer being in the range of 1 g to 15 g per m2.
Claim 3
Dependent Claim
16 words
An image-receiving material according to claim 1, wherein the alpha,beta-unsaturated carboxylic acid monomer is acrylic acid.
Claim 4
Dependent Claim
25 words
An image-receiving material according to claim 1, wherein the copolymerized ethylene is present in the copolymer in the range of 85 to 95% by weight.
Claim 5
Dependent Claim
23 words
An image-receiving material according to claim 1, wherein the silica has an average particle size in the range of 5 to 1,000 nm.
Claim 6
Dependent Claim
38 words
An image-receiving material according to claim 1, wherein the support is made of a vinyl chloride homopolymer or copolymer, the copolymer containing at least 50% by weight of vinyl chloride units and being free from hydrophilic recurring units.
Claim 7
Dependent Claim
117 words
An image-receiving material according to claim 1, wherein the siloxane compound is within the scope of the following general formula: ##STR12## wherein: R 1 represents one of the following groups: ##STR13## wherein A represents a C 1 -C 4 alkylene group, and ##STR14## wherein Y is bivalent hydrocarbon chain, or a bivalent chain containing hydrogen-substituted carbon atoms and at least one oxygen atom, each said oxygen atoms connecting two of said carbon atoms, or a bivalent hydrogen carbon group that is linked at the side of the silicon atom to oxygen, X represents oxygen, each of R 2 , R 3 and R 4 (same or different) represent a hydrocarbon group, and n is 0 or 1.
Claim 8
Dependent Claim
139 words
A laminar article containing in an image-receiving layer a black-and-white photograph produced by the silver complex DTR-process which layer is sandwiched between a clear protective resin cover sheet and a hydrophobic resin-support or resin coated paper support, wherein said image-receiving layer contains developing nuclei in a binder medium and comprises in percent by weight on its total weight the following: 2% to 45% of gelatin, 25% to 85% of colloidal silica, 1.0% to 50% of a copolymer consisting of copolymerized ethylene and an alpha,beta-unsaturated carboxylic acid monomer in free acid or salt form, wherein the polymerized ethylene content is not lower than 80% by weight, and 0.2% to 35% of a siloxane forming a reaction product with said colloidal silica, the dry coverage of the image-receiving layer being in the range of 1 g to 15 g per m2.
Claim 9
Dependent Claim
139 words
A laminar article containing in an image-receiving layer a black-and-white photograph produced by the silver complex DTR-process which layer is sandwiched between a clear protective resin cover sheet and a hydrophobic resin-support or resin coated paper support, wherein said image-receiving layer contains developing nuclei in a binder medium and comprises in percent by weight on its total weight the following: 2% to 45% of gelatin, 25% to 85% of colloidal silica, 1.0% to 50% of a copolymer consisting of copolymerized ethylene and an alpha,beta-unsaturated carboxylic acid monomer in free acid or salt form, wherein the polymerized ethylene content is not lower than 80% by weight, and 0.2% to 35% of a siloxane forming a reaction product with said colloidal silica, the dry coverage of the image-receiving layer being in the range of 1 g to 15 g per m2.
Claim 10
Dependent Claim
16 words
A laminar article according to claim 7, wherein the alpha,beta-unsaturated carboxylic acid monomer is acrylic acid.
Claim 11
Dependent Claim
25 words
A laminar article according to claim 7, wherein the copolymerized ethylene is present in the copolymer in the range of 85 to 95% by weight.
Claim 12
Dependent Claim
23 words
A laminar article according to claim 7, wherein the silica has an average particle size in the range of 5 to 1,000 nm.
Claim 13
Dependent Claim
38 words
A laminar article according to claim 7, wherein the support is made of a vinyl chloride homopolymer or copolymer, the copolymer containing at least 50% by weight of vinyl chloride units and being free from hydrophilic recurring units.
Claim 14
Dependent Claim
117 words
A laminar article according to claim 7, wherein the siloxane compound is within the scope of the following general formula: ##STR15## wherein: R 1 represents one of the following groups: ##STR16## wherein A represents a C 1 -C 4 alkylene group, and ##STR17## wherein Y is a bivalent hydrocarbon chain, or a bivalent chain containing hydrogen-substituted carbon atoms and at least one oxgen atom, each said oxygen atoms connecting two of said carbon atoms, or a bivalent hydrocarbon group that is linked at the side of the silicon atom to oxygen, X represents oxygen, each of R 2 , R 3 and R 4 (same or different) represent a hydrocarbon group, and N is 0 or 1.
Claim 15
Dependent Claim
39 words
A laminar article according to claim 7, wherein the cover sheet is a resin sheet coated with or consisting of a resin having a lower glass transition temperature (Tg) and melting temperature (Tm) than the resin of said support.
Claim 16
Dependent Claim
21 words
A laminar article according to claim 13, wherein the cover sheet is a polyethylene terephthalate sheet coated with a polyethylene layer.
Claim 17
Dependent Claim
30 words
A laminar article according to claim 7, wherein the support is provided with security marks in the form of a watermark, finger print, signature, binary code pattern or printed pattern.
Claim 18
Dependent Claim
16 words
A laminar article according to claim 7, wherein said article contains a magnetic stripe and/or hologram.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |