US4229524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic light sensitive material with antistatic property
Assignee: Fujifilm Holdings Corp
•
Filing: 1979-06-04
•
Granted: 1980-10-21
•
Expires: 1999-06-04
Abstract
Abstract A photographic light sensitive material which contains, in at least one layer, a copolymer having a repeating unit represented by the following general formula (I): ##STR1## wherein R f represents a perfluoroalkyl group having 2 to 12 carbon atoms which may contain one hydrogen atom at the ω-position or a perfluoroalkenyl group; R represents a hydrogen atom or a methyl group; p represents an integer of 1 to 5; m represents an integer of 5 to 50; n represents zero or an integer of 1 to 20; and Y represents a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group, a phenyl group, an alkylphenyl group or one of the groups represented by R f ; whereby antistatic property (even under low humidity) and adhesion resisting property are improved without adversely affecting photographic characteristics.
Inventors
- 👤 Masakazu Yoneyama
- 👤 Shinzo Kishimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:25
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
119 words
A photographic light-sensitive material containing, in at least one layer of copolymer having a repeating unit represented by the following general formula (I): ##STR6## wherein R f represents a perfluoroalkyl group having 2 to 12 carbon atoms which may contain one hydrogen atom at the ω-position or a perfluoroalkenyl group; R represents a hydrogen atom or a methyl group; p represents an integer of 1 to 5; m represents an integer of 5 to 50; n represents 0 or an integer of 1 to 20; and Y represents a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group, a phenyl group, an alkylphenyl group or one of the groups represented by R f .
Claim 2
Dependent Claim
119 words
A photographic light-sensitive material containing, in at least one layer of copolymer having a repeating unit represented by the following general formula (I): ##STR6## wherein R f represents a perfluoroalkyl group having 2 to 12 carbon atoms which may contain one hydrogen atom at the ω-position or a perfluoroalkenyl group; R represents a hydrogen atom or a methyl group; p represents an integer of 1 to 5; m represents an integer of 5 to 50; n represents 0 or an integer of 1 to 20; and Y represents a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group, a phenyl group, an alkylphenyl group or one of the groups represented by R f .
Claim 3
Dependent Claim
44 words
The photographic light-sensitive materialof claim 1, wherein said copolymer is represented by the formula (II) ##STR7## wherein R, R f , p, m and n are defined as in formula (I) and the ratio of x to y is about 70:30 to about 10:90.
Claim 4
Dependent Claim
25 words
The photographic light-sensitive material of claim 2, wherein said copolymer is present in a layer on at least one surface of said photographic light-sensitive material.
Claim 5
Dependent Claim
17 words
The photographic light-sensitive material of claim 3, wherein said copolymer is present in a surface protecting layer.
Claim 6
Dependent Claim
16 words
The photographic light-sensitive material of claim 3, wherein said copolymer is present in a backing layer.
Claim 7
Dependent Claim
29 words
The photographic light-sensitive material of claim 1, wherein said copolymer is present in the material in a coated amount of about 0.005 g/m 2 to 20 g/m 2 .
Claim 8
Dependent Claim
19 words
The photographic light-sensitive material of claim 2, wherein said ratio of x to y is about 50:50 to 20:80.
Claim 9
Dependent Claim
29 words
The photographic light-sensitive material of claim 6, wherein said copolymer is present in said material in a coated amount of about 0.01 g/m 2 to 0.5 g/m 2 .
Claim 10
Dependent Claim
19 words
The photographic light-sensitive material of claim 1, wherein said copolymer contains a repeating unit derived from a third comonomer.
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) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |