US3925083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic silver halide emulsion binder
Assignee: Polaroid Corp
•
Filing: 1973-01-02
•
Granted: 1975-12-09
•
Expires: 1993-01-02
Abstract
Abstract A photosensitive silver halide emulsion wherein the emulsion binder comprises a quaternary ammonium alkyl acrylate polymeric salt.
Inventors
- 👤 Maurice J Fitzgerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:53
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
23 words
A PHOTOSENSITIVE SILVER HALIDE EMULSION WHEREIN THE EMULSION BINDER CONSISTS ESSENTIALLY OF A WATER-SOLUBLE FILM-FORMING COPOLYMER OF A FIRST MONOMER OF THE FORMULA:
Claim 2
Dependent Claim
23 words
A PHOTOSENSITIVE SILVER HALIDE EMULSION WHEREIN THE EMULSION BINDER CONSISTS ESSENTIALLY OF A WATER-SOLUBLE FILM-FORMING COPOLYMER OF A FIRST MONOMER OF THE FORMULA:
Claim 3
Dependent Claim
21 words
The product as defined in claim 1 wherein said copolymer comprises 5-100 mole percent of repeating units of said first monomer.
Claim 4
Dependent Claim
17 words
THE PRODUCT AS DEFINED IN CLAIM 1 WHEREIN SAID SILVER HALIDE EMULSION IS A SILVER IODOBROMIDE EMULSION.
Claim 5
Dependent Claim
17 words
The product as defined in claim 1 wherein said emulsion includes at least one chemical sensitizing agent.
Claim 6
Dependent Claim
17 words
The product as defined in claim 1 wherein said emulsion includes at least one optical sensitizing agent.
Claim 7
Dependent Claim
18 words
The product as defined in claim 1 wherein said first monomer is Beta -(methacryloyloxy) ethyl trimethylammonium ethyl sulfate.
Claim 8
Dependent Claim
14 words
The product as defined in claim 1 wherein said first monomer is 3-(methacryloyloxy-2-hydoroxyprop-1-yl trimethylammonium.
Claim 9
Dependent Claim
17 words
The product as defined in claim 1 wherein said first monomer is Beta -(acryloyloxy) ethyl trimethylammonium p-toluenesulfonate.
Claim 10
Dependent Claim
19 words
The product as defined in claim 1 wherein said first monomer is Beta -(methacryloyloxy) ethyl (ethyl dimethylammonium) ethyl sulfate.
Claim 11
Dependent Claim
18 words
The product as defined in claim 1 wherein said first monomer is 2-( Alpha -chloroacryloyloxy) ethyl trimethylammonium p-toluenesulfonate.
Claim 12
Dependent Claim
13 words
The product as defined in claim 1 wherein said second monomer is acrylamide.
Claim 13
Dependent Claim
14 words
The product as defined in claim 1 wherein said second monomer is diacetone acrylamide.
Claim 14
Independent Claim
37 words
A method of preparing a photosensitive silver halide emulsion which comprises reacting a water-soluble silver salt with a water-soluble halide salt in an aqueous solution containing a water-soluble film-forming copolymer of a first monomer of the formula:
Claim 15
Independent Claim
37 words
A method of preparing a photosensitive silver halide emulsion which comprises reacting a water-soluble silver salt with a water-soluble halide salt in an aqueous solution containing a water-soluble film-forming copolymer of a first monomer of the formula:
Claim 16
Dependent Claim
18 words
The method as defined in claim 13 wherein said first monomer is Beta -(methacryloyloxy) ethyl trimethylammonium ethyl sulfate.
Claim 17
Dependent Claim
15 words
The method as defined in claim 13 wherein said first monomer is 3-(methacryloyloxy)-2-hydroxyprop-1-yl trimethylammonium chloride.
Claim 18
Dependent Claim
17 words
The method as defined in claim 13 wherein said first monomer is Beta -(acryloyloxy) ethyl trimethylammonium p-toluenesulfonate.
Claim 19
Dependent Claim
19 words
The method as defined in claim 13 wherein said first monomer is Beta -(methacryloyloxy) ethyl (ethyl dimethyl) ethyl sulfate.
Claim 20
Dependent Claim
18 words
The method as defined in claim 13 wherein said first monomer is 2-( Alpha -chloroacryloyloxy) ethyl trimethylammonium p-toluenesulfonate.
Claim 21
Dependent Claim
13 words
The method as deFined in claim 13 wherein said second monomer is acrylamide.
Claim 22
Dependent Claim
14 words
The method as defined in claim 13 wherein said second monomer is diacetone acrylamide.
Claim 23
Dependent Claim
15 words
The method as defined in claim 13 wherein said aqueous solution includes a bodying polymer.
Claim 24
Dependent Claim
14 words
The method as defined in claim 21 wherein said bodying polymer is polyvinyl alcohol.
Claim 25
Dependent Claim
13 words
The method as defined in claim 21 wherein said bodying polymer is gelatin.
Claim 26
Dependent Claim
24 words
A photosensitive silver halide emulsion wherein the emulsion binder, consists essentially of a water-soluble film-forming homopolymer consisting essentially of repeating units of the formula:
Claim 27
Dependent Claim
24 words
A photosensitive silver halide emulsion wherein the emulsion binder, consists essentially of a water-soluble film-forming homopolymer consisting essentially of repeating units of the formula:
Claim 28
Dependent Claim
18 words
The product as defined in claim 24 wherein said homopolymer is poly Beta -(methacryloyloxy) ethyl trimethylammonium methyl sulfate.
Claim 29
Dependent Claim
15 words
The product as defined in claim 24 wherein said homopolymer is poly 3-(methacryloyloxy)-2-hydroxyprop-1-yl trimethylammonium chloride).
Claim 30
Independent Claim
38 words
A method of preparing a photosensitive silver halide emulsion which comprises reacting a water-soluble silver salt with a water-soluble halide salt in an aqueous solution containing a water-soluble film-forming homopolymer consisting essentially of repeating units of the formula:
Claim 31
Independent Claim
38 words
A method of preparing a photosensitive silver halide emulsion which comprises reacting a water-soluble silver salt with a water-soluble halide salt in an aqueous solution containing a water-soluble film-forming homopolymer consisting essentially of repeating units of the formula:
Claim 32
Dependent Claim
16 words
The method as defined in claim 27 wherein said polymeric salt is poly 3-(methacryloyloxy)-2-hydroxyprop-1-yl trimethylammonium chloride.
Claim 33
Dependent Claim
15 words
The method as defined in claim 27 wherein said polymeric salt is poly (1-methacryloyloxy-3-trimethylammonium-2-propanol chloride).
References Cited (Backward Citations)
US2839401A
Cited
US3411912A
Cited
US3709690A
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US3647464A
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US3681079A
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US3713834A
Cited
US3746548A
Cited
US3749577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |