US4118231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive silver halide photographic materials containing antistatic agents
Assignee: Konica Minolta Inc
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Filing: 1977-03-18
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Granted: 1978-10-03
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Expires: 1997-03-18
Abstract
Abstract Static resistance of a light-sensitive silver halide photographic material is improved by treating said material with a solution or dispersion of a polymer containing quaternary ammonium groups, and which also acts as an antifoaming agent in processing solutions. The polymeric moiety of the polymer has the formula <IMAGE> WHEREIN R1, R2, R3, and R4 are individually a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms; A and B are individually an alkylene group having 1 to 4 carbon atoms, a hydroxymethylene group, a phenylene group or a mere bond; X1(-) and X2(-) are individually an anion; and n is an integer of 10 to 30.
Inventors
- 👤 Masayoshi Mayama
- 👤 Sadatugu Terada
- 👤 Toshio Muramatsu
- 👤 Masayuki Kimura
- 👤 Masao Ishibara
- 👤 Tohru Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:38
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/0226; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/044; C08J7/046; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C5/3056; C08J2479/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A light-sensitive silver halide photographic material comprising a support, a silver halide emulsion layer and a layer consisting essentially of a polymer of the formula ##STR9## wherein Y and W are individually Cl, Br, I or ##STR10## wherein Z is Cl, Br or I, or ##STR11## and wherein R 1 , R 2 , R 3 , and R 4 are individually an alkyl or hydroxyalkyl group having 1 to 4 carbon atoms, a hydroxymethylene group, a phenylene group or a mere bond; X 1 .sup.⊖ and X 1 .sup.⊖ are individually an anion; and n is an integer of 10 to 30.
Claim 2
Dependent Claim
103 words
A light-sensitive silver halide photographic material comprising a support, a silver halide emulsion layer and a layer consisting essentially of a polymer of the formula ##STR9## wherein Y and W are individually Cl, Br, I or ##STR10## wherein Z is Cl, Br or I, or ##STR11## and wherein R 1 , R 2 , R 3 , and R 4 are individually an alkyl or hydroxyalkyl group having 1 to 4 carbon atoms, a hydroxymethylene group, a phenylene group or a mere bond; X 1 .sup.⊖ and X 1 .sup.⊖ are individually an anion; and n is an integer of 10 to 30.
Claim 3
Dependent Claim
25 words
The light-sensitive silver halide photographic material of claim 1, wherein the polymer is present in an amount of from 3 to 30 mg/m 2 .
Claim 4
Dependent Claim
34 words
The light-sensitive silver halide photographic material of claim 1, wherein the anion is selected from the group consisting of halogen ions, ClO 4 -ions, carboxylic ions and sulfonic acid ions containing fluorine-substituted alkyl groups.
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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |