US3775112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable material containing starch and process of using
Assignee: Eastman Kodak Co
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Filing: 1971-06-10
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Granted: 1973-11-27
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Expires: 1991-06-10
Abstract
Abstract A photosensitive element useful in transfer processes for the preparation of images, in particular multilayer images such as color proofs, contains in the light sensitive layer small, irregular-shaped particles, such as corn starch.
Inventors
- 👤 M Alsup
- 👤 A Mutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:08
CPC Classifications
G; G03; G03F; G03F3/00; G03F3/10; G03F7/00; G03F7/004; G03F7/09; G03F7/115; G03F7/26; G03F7/34; G03F7/346; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/122; Y10S430/124
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A photosensitive element as defined in claim 1 wherein the photocrosslinkable polymer is a photocrosslinkable polyester having a tackifying temperature of about 50* C. to 200* C., a glass transition temperature of less than about 30* C., and a crystallinity of about 10 percent to 80 percent as determined by x-ray diffraction, the polyester containing as recurring units: a. 50 mole percent of at least one dihydric alcohol moiety and b. 50 mole percent of at least two dicarboxylic acid moieties esterified with said dihydric alcohol moiety, about 5 to 45 mole percent of said dicarboxylic acid moieties containing as an integral portion a
Claim 2
Dependent Claim
15 words
A photosensitive element as defined in claim 2 wherein the dicarboxylic acid moiety containing the
Claim 3
Dependent Claim
40 words
A photosensitive element as defined in claim 2 wherein the dihydric alcohol moiety is derived from an alcohol having the formula HO-R-OH wherein R is an alkylene radical having two to 12 carbon atoms, the dicarboxylic acid moiety containing the
Claim 4
Dependent Claim
64 words
A photosensitive element comprising a support bearing a layer of a pigmented photosensitive polymer composition comprising the photocrosslinkable polymer poly(pentamethylene-bis-p-phenylene diacrylate-co-azelate) and from one to 15 percent by weight, based on the weight of the polymer, of corn starch having an average particle diameter of two to 50 microns, with the major portion of the particles having a diameter of three to 15 microns.
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) | 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 |