Patent US3977908A successfully refreshed from Google Patents.
Patent US3850641A successfully refreshed from Google Patents.
US3850641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic light-sensitive photographic material
Assignee: Konica Minolta Inc
•
Filing: 1972-07-13
•
Granted: 1974-11-26
•
Expires: 1992-07-13
Abstract
Abstract A multi-layered, light-sensitive silver halide photographic material wherein at least one of its outer layers comprises an ethylene oxide addition polymer of a phenol-formalin condesate, in which the molar proportion of ethylene oxide is not more than 30 moles per structural unit of the phenol-formalin condensate.
Inventors
- 👤 T Wada
- 👤 H Inokuma
- 👤 H Yamaguchi
- 👤 H Horiuchi
- 👤 K Horigome
- 👤 K Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:57
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; G03C1/895; Y; Y10; Y10S; Y10S430/00; Y10S430/131; Y10S430/156; Y10S430/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
92 words
A LIGHT-SENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL COMPRISING A FILM SUPPORT AND A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER ON ONE SIDE OF THE FILM SUPPORT, AN ETHYLENE OXIDE ADDITION POLYMER OF A PHENYL-FORMALIN CONDENSATE, IN WHICH THE MOLAR PROPORTION OF ETHYLENE OXIDE IS NOT MORE THAN 30 MOLES PER STRUCTURAL UNIT OF THE PHENOL-FORMALIN CONDENSATE, SAID ADDITION POLYMER BEING PRESENT IN AN OUTER LAYER ON THE OTHER SIDE OF THE FILM SUPPORT OR IN AN OUTER LAYER ON THE LIGHT-SENSITIVE LAYER, OR IN THE LIGHT-SENSITIVE LAYER AT LEAST AT THE OUTER SURFACE THEREOF.
Claim 2
Dependent Claim
92 words
A LIGHT-SENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL COMPRISING A FILM SUPPORT AND A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER ON ONE SIDE OF THE FILM SUPPORT, AN ETHYLENE OXIDE ADDITION POLYMER OF A PHENYL-FORMALIN CONDENSATE, IN WHICH THE MOLAR PROPORTION OF ETHYLENE OXIDE IS NOT MORE THAN 30 MOLES PER STRUCTURAL UNIT OF THE PHENOL-FORMALIN CONDENSATE, SAID ADDITION POLYMER BEING PRESENT IN AN OUTER LAYER ON THE OTHER SIDE OF THE FILM SUPPORT OR IN AN OUTER LAYER ON THE LIGHT-SENSITIVE LAYER, OR IN THE LIGHT-SENSITIVE LAYER AT LEAST AT THE OUTER SURFACE THEREOF.
Claim 3
Dependent Claim
38 words
A light-sensitive silver halide photographic material as claimed in claim 1, wherein said ethylene oxide addition polymer of the phenol-formalin condensate is obtained by addition polymerization of ethylene oxide with a phenol-formalin condensate having the following structural formula
Claim 4
Dependent Claim
63 words
A light-sensitive silver halide photographic material as claimed in claim 1, wherein said phenol-formalin condensate is selected from the group consisting of 4-Methylphenol-formalin resin, 2-t-Butylphenol-formalin resin, 4-Octylphenol-formalin resin, 4-Nonylphenol-formalin resin, 4-Tetradecylphenol-formalin resin, 2-Octadecylphenol-formalin resin, 4-Octadecylphenol-formalin resin, 3-Pentadecylphenol-formalin resin, 2,4-di-t-Butylphenol-formalin resin, 2-Methyl-4-tetradecylphenol-formalin resin, 2-Chlorophenol-formalin resin, 4-Bromophenol-formalin resin, 3-Nitrophenol-formalin resin, 4-Carboxyphenol-formalin resin, 2-Chloro-4-hydroxyethylphenol-formalin resin, 2-Chloro-4-chloroethylphenol-formalin resin, 2-Iodoethyl-4-methoxycarbonylphenol-formalin resin, 4-Methoxyphenol-formalin resin, 4-Methylcarboxyphenol-formalin resin, and 2-Hydroxymethyl-3-methylphenol-formalin resin.
Claim 5
Dependent Claim
72 words
A multi-layered, light-sensitive photographic material, comprising a film support, a light-sensitive silver halide emulsion layer on said support, and an outer layer on said film support or on said emulsion layer, an ethylene oxide addition polymer of a phenol-formalin condensate, in which the molar proportion of ethylene oxide is not more than 30 moles per structural unit of the phenol-formalin condensate, said addition polymer being present in or on said outer layer.
Claim 6
Dependent Claim
72 words
A multi-layered, light-sensitive photographic material, comprising a film support, a light-sensitive silver halide emulsion layer on said support, and an outer layer on said film support or on said emulsion layer, an ethylene oxide addition polymer of a phenol-formalin condensate, in which the molar proportion of ethylene oxide is not more than 30 moles per structural unit of the phenol-formalin condensate, said addition polymer being present in or on said outer layer.
Claim 7
Dependent Claim
34 words
A multi-layered, light-sensitive silver halide photographic material as claimed in claim 4 wherein said outer layer is a protective layer, an overcoat layer, an anti-halation layer or an anti-curling layer on said emulsion layer.
Claim 8
Dependent Claim
26 words
A multi-layered, light-sensitive silver halide photographic material as claimed in claim 5, wherein said outer layer contains and the support is coated with the addition polymer.
Claim 9
Dependent Claim
33 words
A multi-layered, light-sensitive silver halide photographic material as claimed in claim 4 wherein said outer layer is on said support on the side thereof opposite that on which the emulsion layer is disposed.
Claim 10
Dependent Claim
78 words
A photographic material comprising a film support, a light-sensitive silver halide emulsion layer on said film support, said photographic material having opposite surfaces, and an antistatic material disposed on one of said surfaces or in the substance of the photographic material at said surface, said antistatic material being an ethylene oxide addition polymer of a phenol-formalin condensate, in which the molar proportion of ethylene oxide is not more than 30 moles per structural unit of the phenol-formalin condensate.
Claim 11
Dependent Claim
78 words
A photographic material comprising a film support, a light-sensitive silver halide emulsion layer on said film support, said photographic material having opposite surfaces, and an antistatic material disposed on one of said surfaces or in the substance of the photographic material at said surface, said antistatic material being an ethylene oxide addition polymer of a phenol-formalin condensate, in which the molar proportion of ethylene oxide is not more than 30 moles per structural unit of the phenol-formalin condensate.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |