US3909273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization utilizing diazosulfonate and aromatic hydroxy compounds
Assignee: Keuffel and Esser Co
•
Filing: 1973-07-23
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Granted: 1975-09-30
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Expires: 1993-07-23
Abstract
Abstract A photo-sensitive initiator for polymerization of ethylenically unsaturated compounds is the combination of a diazo-N-sulfonate and an aromatic hydroxy compound.
Inventors
- 👤 Steven Levinos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:59
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
33 words
A POLYMERIZABLE COMPOSITION COMPRISING: A. AN ETHYLENICALLY UNSATURATED VINYL COMPOUND, AND B. A PHOTO-SENSATIVE POLYMERIZATION INITATOR COMPRISING A COMBINATION OF: 1 . A LIGHT-SENSATIVE AROMATIC DIAZO-N-SULFONATE, AND 2 . AN AROMARIC HYDROXY COMPOUND.
Claim 2
Dependent Claim
33 words
A POLYMERIZABLE COMPOSITION COMPRISING: A. AN ETHYLENICALLY UNSATURATED VINYL COMPOUND, AND B. A PHOTO-SENSATIVE POLYMERIZATION INITATOR COMPRISING A COMBINATION OF: 1 . A LIGHT-SENSATIVE AROMATIC DIAZO-N-SULFONATE, AND 2 . AN AROMARIC HYDROXY COMPOUND.
Claim 3
Dependent Claim
4 words
an aromatic hydroxy compound.
Claim 4
Dependent Claim
4 words
an aromatic hydroxy compound.
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein said diazo-N-sulfonate is derived from a benzene diazonium compound of electron acceptor character.
Claim 6
Dependent Claim
20 words
A composition according to claim 1 wherein said vinyl compound and said initiator are intimately admixed in a fluid medium.
Claim 7
Dependent Claim
28 words
The composition according to claim 3 wherein said diazo-N-sulfonate is present in an amount of one dry weight part per 50 to 100 parts of said vinyl compound.
Claim 8
Dependent Claim
14 words
A composition according to claim 3 comprising at least about 5 weight percent water.
Claim 9
Dependent Claim
29 words
A composition according to claim 1 wherein said aromatic hydroxy compound is present in an amount of one dry weight part per 1 to 2 parts of said diazo-N-sulfonate.
Claim 10
Dependent Claim
20 words
Photo-imaging material comprising: a. a support; and b. coating on said support of a photopolymerizable composition according to claim 1.
Claim 11
Dependent Claim
13 words
Photo-imaging material according to claim 7 wherein said composition includes a water-dispersible binder.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |