Patent US2648279A successfully refreshed from Google Patents.
Patent US4251626A successfully refreshed from Google Patents.
US4251626A
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US
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Silver halide photographic materials containing gelatin reactive antistatic agents
Assignee: Fujifilm Holdings Corp
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Filing: 1980-01-25
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Granted: 1981-02-17
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Expires: 2000-01-25
Abstract
Abstract A silver halide photographic material having on a support at least one gelatin-containing layer containing as an antistatic agent a gelatin reactive surface active agent having at least one long chain hydrophobic group, at least one of a hydrophilic group selected from a cationic group, an anionic group, an amphoteric and a nonionic group, and at least one group reactive with gelatin in the molecule.
Inventors
- 👤 Junji Minamizono
- 👤 Masakazu Yoneyama
- 👤 Shinzo Kishimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:14
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C07D207/44; C07D207/444; C07D207/456; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/40; C07D251/42; C07D251/44; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C07D303/36; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/32; C08G85/00; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; G03C1/895
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
61 words
A silver halide photographic material comprising a support having thereon at least a gelatin-containing layer containing a gelatin-reactive surface active agent having at least one long chain hydrophobic group, at least one hydrophilic group selected from a cationic group, an anionic group, an amphoteric group, and a nonionic group, and at least one group reactive with gelatin in the molecule thereof.
Claim 2
Dependent Claim
61 words
A silver halide photographic material comprising a support having thereon at least a gelatin-containing layer containing a gelatin-reactive surface active agent having at least one long chain hydrophobic group, at least one hydrophilic group selected from a cationic group, an anionic group, an amphoteric group, and a nonionic group, and at least one group reactive with gelatin in the molecule thereof.
Claim 3
Dependent Claim
236 words
The silver halide photographic material as claimed in claim 1, wherein said gelatin-reactive surface active agent is a compound represented by the formula (I): R-(A)-(B).sub.m -(A).sub.n -(R.sub.1).sub.l -C (I) wherein R represents an alkyl group having 8 to 18 carbon atoms, an alkenyl group having 8 to 18 carbon atoms, a substituted alkyl group, an aralkyl group having 12 to 24 carbon atoms or a substituted aralkyl group; A represents ##STR16## etc., wherein the counterion, X.sup.⊖, is an anion such as Cl.sup.⊖, Br.sup.⊖, CH 3 SO 4 .sup.⊖ and ##STR17## D represents an alkylene group having 1 to 8 carbon atoms or an aralkylene group having 8 to 16 carbon atoms and E represents --COO or a SO 3 group and a is an integer of 2 to 8; B represents a group of the formula ##STR18## wherein n is an integer of 3 to 50 and (F) represents a simple bond or an alkylene group having 1 to 18 carbon atoms and R 2 represents a hydrogen atom, a methyl group or an ethyl group; R 1 represents an alkylene group having 1 to 8 carbon atoms; C represents an active vinyl group, an epoxy group, a methanesulfonic acid group, a group having an active halogen atom, an active ester group, an aldehyde group, a maleimido group, an acid halide group, or an azolido group; and l; m and n each is 0 or 1.
Claim 4
Dependent Claim
19 words
The silver halide photographic material as claimed in claim 1, wherein the gelatin-containing layer is a surface protective layer.
Claim 5
Dependent Claim
18 words
The silver halide photographic material as claimed in claim 1, wherein the gelatin-containing layer is a back layer.
Claim 6
Dependent Claim
17 words
The silver halide photographic material as claimed in claim 1, wherein the gelatin-containing layer is an interlayer.
Claim 7
Dependent Claim
20 words
The silver halide photographic material as claimed in claim 1, wherein the gelatin-containing layer is a silver halide emulsion layer.
Claim 8
Dependent Claim
35 words
The silver halide photographic material as claimed in claim 1, wherein the proportion of the gelatin-containing surface active agent contained in said gelatin-containing layer is about 0.1 to 10 g per 100 g of gelatin.
Claim 9
Dependent Claim
22 words
The silver halide photographic material as claimed in claim 1, wherein said gelatin-containing layer also contains a fluorine series surface active agent.
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) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |