US3607691A
Expired / Lapsed
US
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System for the redox photopolymerization of vinyl monomers in the presence of periodates
Assignee: Technical Operations Inc
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Filing: 1968-07-09
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Granted: 1971-09-21
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Expires: 1988-07-09
Abstract
Abstract A visible light activated photopolymerization system is disclosed. The polymerization mixture contains a vinyl monomer, a reducible dye and reducing agent as the photopolymerization initiator, and a strong oxidizing agent. It is found that the presence of the strong oxidizing agent materially increases the rate of polymer formation over the same mixture in the absence of the strong oxidizing agent, particularly at the early stages of the photopolymerization reaction.
Inventors
- 👤 Gershon M Goldberg
- 👤 Robert J Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:19
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; C; C08; C08F; C08F2/00; C08F2/46; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12; Y10S430/124; Y10S522/00; Y10S522/901; Y10S522/902; Y10S522/91
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
14 words
A method as set forth in claim 1, wherein said mixture is substantially anaerobic.
Claim 2
Dependent Claim
16 words
A method as set forth in claim 2, wherein said monomer compound is a vinyl compound.
Claim 3
Dependent Claim
21 words
A method as set forth in claim 3, wherein the oxygen concentration of said mixture is less than about 0.1 p.p.m.
Claim 4
Dependent Claim
18 words
A method as set forth in claim 4, wherein said oxygen concentration is less than about 0.005 p.p.m.
Claim 5
Dependent Claim
90 words
A photopolymerization reaction mixture comprising a monomer compound of the type which can undergo polymerization via the formation of free radicals periodate ions as an oxidizing agent, and a photopolymerization initiator system for said monomer compound comprising a reducible dye and an electron donor compound, said dye and electron donor compound being substantially nonreactive in said mixture in the dark but reactive in the presence of visible light containing wavelengths within the energy absorption band of said dye to produce free radicals to initiate a polymerization reaction of said monomer.
Claim 6
Dependent Claim
61 words
A mixture as set forth in claim 6, wherein said electron donor compound is acetyl acetone present in amount of at least approximately 2 X 10 4 M, and said mixture contains more than 0.1 p.p.m. of oxygen dissolved therein, whereby the exposure of said mixture to light effects a reduction in the oxygen concentration to induce polymerization of said monomer.
Claim 7
Dependent Claim
21 words
A mixture as set forth in claim 8, wherein said mixture contains at least about 0.8 p.p.m. of oxygen dissolved therein.
Claim 8
Dependent Claim
15 words
A mIxture as set forth in claim 6, wherein said monomer is a vinyl compound.
Claim 9
Dependent Claim
12 words
A mixture as set forth in claim 6, which is substantially anaerobic.
Claim 10
Dependent Claim
15 words
A mixture as set forth in claim 10, wherein said monomer is a vinyl compound.
Claim 11
Dependent Claim
15 words
A mixture as set forth in claim 6, wherein said monomer is a vinyl compound.
Claim 12
Dependent Claim
16 words
A mixture as set forth in claim 6, wherein said electron donor compound is acetyl acetone.
Claim 13
Dependent Claim
23 words
A mixture as set forth in claim 6, wherein said monomer is a vinyl compound, and said electron donor compound is acetyl acetone.
Claim 14
Dependent Claim
14 words
A mixture as set forth in claim 15, wherein said vinyl compound is acrylamide.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |