Patent US3616367A successfully refreshed from Google Patents.
US3616367A
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US
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Photopolymerizable acrylic compositions containing rearrangeable ultraviolet stabilizer precursors
Assignee: EIDP Inc
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Filing: 1968-11-25
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Granted: 1971-10-26
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Expires: 1988-11-25
Abstract
Abstract A photopolymerizable composition containing monomeric and polymeric esters of an acid selected from the group consisting of acrylic acid and methacrylic acid, 50 to 1,000 parts per million of a photopolymerization initiator, 5 to 100 parts per million of polymerization inhibitor, and 0.001 percent to 5.0 percent of an ultraviolet stabilizer precursor which is a phenolic ester.
Inventors
- 👤 David William Zunker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:02
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F265/06; Y; Y10; Y10S; Y10S522/00; Y10S522/907
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
The composition in claim 1 in which the monomeric alkyl ester of an acid is selected from the group consisting of methyl methacrylate, ethyl methacrylate, ethyl acrylate, and ethylene glycol dimethacrylate and in which the polymer containing alkyl ester polymerized units of an acid is selected from the group consisting of methyl methacrylate, ethyl methacrylate, ethyl acrylate, ethylene glycol dimethacrylate and copolymers thereof.
Claim 2
Dependent Claim
33 words
The composition in claim 2 in which the photopolymerization initiator is selected from the class consisting of benzoin, benzoin ethyl ether, Alpha -methyl benzoin, benzil, Alpha , Alpha -dibromoacetophenone, desyl chloride, and 2,2''-azo-bis-isobutyronitrile.
Claim 3
Dependent Claim
29 words
The composition in claim 3 in which the polymerization inhibitor is selected from the class consisting of 2,4-dimethyl-6-t-butyl phenol, hydroquinone, hydroquinone monomethyl ether, 2, 5-di-t-butyl hydroquinone, and 2,6-di-t-butyl-4-methyl phenol.
Claim 4
Dependent Claim
24 words
The composition in claim 4 in which the content by weight of the composition is from 50 to 1,000 parts per million photopolymerization initiator.
Claim 5
Dependent Claim
24 words
The composition in claim 5 in which the content by weight of the composition is from 50 to 100 parts per Million polymerization inhibitor.
Claim 6
Dependent Claim
21 words
The composition in claim 6 in which the content by weight of the composition is from 5 to 65 percent polymer.
Claim 7
Dependent Claim
47 words
A photopolymerizable composition containing 35 to 65 percent by weight methyl methacrylate polymer, 50 to 500parts per million by weight benzoin, 5 to 50 parts per million by weight 2,4-dimethyl-6-t-butyl phenol, 0.01 to 0.5 percent by weight resorcinol monobenzoate, and a complemental amount of methyl methacrylate monomer.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |