US3895952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototropic compounds as acid catalyst for epoxy materials
Assignee: Primerica Inc
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Filing: 1973-02-09
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Granted: 1975-07-22
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Expires: 1993-02-09
Abstract
Abstract Photopolymerizable compositions comprising a polymerizable epoxide, vinyl ether, or other acid-catalyzed monomer and a phototropic, alkyl substituted-orthonitrobenzene containing compound are provided, which, when exposed to actinic radiation, are polymerized by the radiation produced acidic initiator.
Inventors
- 👤 Sheldon I Schlesinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:06
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; C; C08; C08F; C08F2/00; C08F2/46; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/686; C08G63/00; C08G63/78; C08G63/82; C08G63/823; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2669; C08G65/2672; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/115
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
70 words
A PHOTOPOLYMERIZABLE COMPOSITION COMPRISING: A MONOMERC OR PREPOLYMERIC EPOXIDE MATERIAL, POLYMERIZABLE TO HIGHER MOLECULAR WEIGHTS BY CATIONIC POLYMERIZATION, SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL ETHERS OF BISPHENOL A, EPOXY-CYCLOALKANES, EPOXY-NOVALACS AND EPOXY-ALKANES, GLYCIDYL ALKYL ETHERS, EPOXY-NOVALACS AND ALLYL GLYCIDYL ETHER-GLYCIDYL METHACRYLATE COPOLYMER IN ADMIXTURE WITH A PHOTOTROPIC AROMATIC COMPOUND CONTAINING AT LEAST ONE NITRO RADICAL IN A POSITION ORTHO TO AN ALKYL SUBSTITUENT SELECTED FROM COMPOUNDS HAVING THE FORMULA:
Claim 2
Dependent Claim
70 words
A PHOTOPOLYMERIZABLE COMPOSITION COMPRISING: A MONOMERC OR PREPOLYMERIC EPOXIDE MATERIAL, POLYMERIZABLE TO HIGHER MOLECULAR WEIGHTS BY CATIONIC POLYMERIZATION, SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL ETHERS OF BISPHENOL A, EPOXY-CYCLOALKANES, EPOXY-NOVALACS AND EPOXY-ALKANES, GLYCIDYL ALKYL ETHERS, EPOXY-NOVALACS AND ALLYL GLYCIDYL ETHER-GLYCIDYL METHACRYLATE COPOLYMER IN ADMIXTURE WITH A PHOTOTROPIC AROMATIC COMPOUND CONTAINING AT LEAST ONE NITRO RADICAL IN A POSITION ORTHO TO AN ALKYL SUBSTITUENT SELECTED FROM COMPOUNDS HAVING THE FORMULA:
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein R1 and R2 are hydrogen and R3 is a nitro group.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein R1 is hydrogen, R2 is a pyridyl radical and R3 is a nitro group.
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein R1 and R2 are dinitrophenyl and R3 is a nitro group.
Claim 6
Dependent Claim
15 words
The composition of claim 1 wherein R1 and R2 are dinitrophenyl and R3 is -COOR.
Claim 7
Dependent Claim
11 words
The composition of claim 5 wherein the -COOR group is carbethoxy.
Claim 8
Dependent Claim
29 words
The composition of claim 1 wherein said phototropic compound is present in an amount equal to between about 1 percent and about 70 percent by weight of the composition.
Claim 9
Dependent Claim
15 words
The composition of claim 1 wherein the epoxide material is allyl glycidyl ether-glycidyl methacrylate copolymer.
Claim 10
Dependent Claim
14 words
The composition of claim 1 wherein the epoxide material is an epoxy cresol novolac.
Claim 11
Dependent Claim
41 words
As an article of manufacture, a composite sheet comprising a support and in surface contact therewith are organic solvent-soluble layer containing the composition of claim 1, the phototropic compound therein having had substantially no exposure to actinic or electron beam radiation.
Claim 12
Dependent Claim
17 words
The article of manufacture of claim 10 wherein said epoxide material is allyl glycidyl ether-glycidyl methacrylate copolymer.
Claim 13
Dependent Claim
21 words
The article of manufacture of claim 11 wherein said phototropic compound is ethyl bis(2,4-dinitrophenyl) acetate, 2, 4-dinitrotoulene, tris(2,4-dinitrophenyl) methane or 2-(2'',4''-dinitrobenzyl)-pyridine.
Claim 14
Dependent Claim
15 words
The article of manufacture of claim 12 wherein said epoxide is an epoxy cresol novolac.
Claim 15
Dependent Claim
22 words
The article of manufacture of claim 13 wherein said phototropic compound is ethyl bis(2,4-dinitrophenyl) acetate, 2, 4-dinitrotoluene, tris(2,4-dinitrophenyl) methane or 2-(2'', 4''-dinitrobenzyl)-pyridine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |