US3775160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophobic film coated with acid-modified butadiene copolymer
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1971-05-11
•
Granted: 1973-11-27
•
Expires: 1991-05-11
Abstract
Abstract A hydrophobic film is coated with an ethylenically unsaturated acid-modified butadiene copolymer and a light sensitive gelatinsilver halide emulsion layer.
Inventors
- 👤 M Clachan
- 👤 G Pears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:10
CPC Classifications
C; C08; C08L; C08L13/00; C08L13/02; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/043; C08J7/056; G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; G03C1/7954; G03C1/91; G03C1/93; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; C08J2427/00; C08J2427/02; C08J2427/04; C08J2455/00; C08J2455/02; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31725; Y10T428/3175; Y10T428/31754; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
23 words
A coated film base material according to claim 1, in which the support film is of biaxially oriented and heat set polyethylene terephthalate.
Claim 2
Dependent Claim
21 words
A coated film base material according to claim 1, in which said copolymer contains, as the ethylenically unsaturated acid, itaconic acid.
Claim 3
Dependent Claim
25 words
A coated film base material according to claim 3, in which the said copolymer contains from 1.0 to 7.0 percent by weight of itaconic acid.
Claim 4
Dependent Claim
24 words
A coated film base material according to claim 1, in which said copolymer contains from 30 to 60 percent by weight of butadiene units.
Claim 5
Dependent Claim
24 words
A coated film base material according to claim 5, in which said copolymer contains from 32 to 40 percent by weight of butadiene units.
Claim 6
Dependent Claim
24 words
A coated film base material according to claim 1, in which said copolymer contains from 18 to 30 percent by weight of butadiene units.
Claim 7
Dependent Claim
25 words
A coated film base material according to claim 1, in which the coat weight of the first layer is from 0.8 mg/dm2 to 4.0 mg/dm2.
References Cited (Backward Citations)
US3506445A
Cited
US3615556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |