US3652285A
Expired / Lapsed
US
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Photochromic-photopolymerization compositions
Assignee: Agfa Gevaert NV
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Filing: 1969-06-23
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Granted: 1972-03-28
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Expires: 1989-06-23
Abstract
Abstract X and X'''' each represents hydrogen, chlorine, bromine, nitrile, acetyl, carboxy, hydroxy, nitro or methoxy, X'' represents hydrogen, chlorine, bromine, nitrile, acetyl, carboxy or nitro, and X''X'''' represents hydrogen, chlorine, bromine or nitro. A photographic material and a process for the formation of nonfading images upon exposure to actinic light comprising a lightsensitive layer formed of a photochromic compound and a photohardening polymeric system is described. The photochromic compound has the formula:
Inventors
- 👤 Gerard Albert Delzenne
- 👤 Georges Joseph Smets
- 👤 Jan Antonius Hoefnagels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:33
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/008; G03F7/0085; G03C; G03C1/00; G03C1/685; G03F7/09; G03F7/105; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/128
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
13 words
Process according to claim 1, wherein the photochromic compound corresponds to the formula:
Claim 2
Dependent Claim
13 words
Process according to claim 1, wherein the photochromic compound corresponds to the formula:
Claim 3
Dependent Claim
21 words
Process according to claim 1, wherein the photo-hardening polymeric system is a polyester prepared by polycondensation of 2,2-bis(4-hydroxyphenyl)-propane and 5-azido-isophthaloyl chloride.
Claim 4
Dependent Claim
26 words
Process according to claim 1, wherein the photo-hardening polymeric system is the reaction product of the polyether of 2, 2-bis(4-hydroxyphenyl)-propane and epichlorohydrin with 5-azidobenzene sulphonyl chloride.
Claim 5
Dependent Claim
23 words
Process according to claim 1, wherein the photo-hardening polymeric system Is the reaction product of the polyether of 2,2-bis(4-hydroxyphenyl)-propane and epichlorohydrin with naphthoquinone-1,2-diazide(2)-5-sulphochloride.
Claim 6
Dependent Claim
28 words
A light-sensitive photographic material which will form a non-fading image on exposure to actinic light comprising a photo-hardening polymeric system and a photochromic compound corresponding to the formula:
Claim 7
Dependent Claim
13 words
Material according to claim 7, wherein the photochromic compound corresponds to the formula:
Claim 8
Dependent Claim
13 words
Material according to claim 7, wherein the photochromic compound corresponds to the formula:
Claim 9
Dependent Claim
21 words
Material according to claim 7, wherein the photo-hardening polymeric system is a polyester prepared by polycondensation of 2,2-bis(4-hydroxyphenyl)-propane and 5-azido-isophthaloyl chloride.
Claim 10
Dependent Claim
25 words
Material according to claim 7, wherein the photo-hardening polymeric system is the reaction product of the polyether of 2,2-bis(4-hydroxyphenyl)-propane and epichlorohydrin with 5-azidobenzene sulphonyl chloride.
Claim 11
Dependent Claim
23 words
Material according to claim 7, wherein the photo-hardening polymeric system is the reaction product of the polyether of 2,2-bis(4-hydroxyphenyl)-propane and epichlorohydrin with naphthoquinone-1,2-diazide(2)-5-sulphochloride.
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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |