Patent US3211282A successfully refreshed from Google Patents.
US3668093A
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Photoinitiation of vinyl polymerization by triaroylphosphines
Assignee: EIDP Inc
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Filing: 1971-05-06
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Granted: 1972-06-06
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Expires: 1991-05-06
Abstract
Abstract Acyl phosphines of the formula WHEREIN R1, R2 and R3, alike or different, are aryl or aroyl groups having up to 13 carbon atoms and such aryl or aroyl groups substituted with halogen of atomic number 9-35, alkyl of up to six carbon atoms, or alkoxy of up to six carbon atoms, with the proviso that at least one of R1, R2 and R3 is aroyl, are effective as photoinitiators for photopolymerization of ethylenically unsaturated compounds. Compositions containing such an acyl phosphine and an ethylenically unsaturated compound are useful in preparing photoimaging compositions, adhesives, coating compositions and the like.
Inventors
- 👤 Thomas Albert Rettig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:19
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/029; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/5036; C08; C08F; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
10 words
A composition according to claim 1 which is predominantly crystalline.
Claim 2
Dependent Claim
18 words
A composition according to claim 1 wherein the range of the acyl phosphine is 0.20 to 20 percent.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein the acyl phosphine is tribenzoyl phosphine.
Claim 4
Dependent Claim
12 words
A composition according to claim 1 wherein the acyl phosphine is diphenylbenzoylphosphine.
Claim 5
Dependent Claim
12 words
A composition according to claim 1 wherein the acyl phosphine is p-dimethylaminobenzoyldiphenylphosphine.
Claim 6
Dependent Claim
12 words
A composition according to claim 1 wherein the acyl phosphine is dibenzoylphenylphosphine.
Claim 7
Dependent Claim
13 words
A composition accOrding to claim 1 wherein the acyl phosphine is bis(p-dimethylaminobenzoyl phenylphosphine.
Claim 8
Dependent Claim
13 words
A composition according to claim 4 wherein the ethylenically unsaturated compound is N-vinylsuccinimide.
Claim 9
Dependent Claim
13 words
A composition according to claim 4 wherein the ethylenically unsaturated compound is 4-acryloxybenzophenone.
Claim 10
Dependent Claim
14 words
A composition according to claim 4 wherein the ethylenically unsaturated compound is methyl methacrylate.
Claim 11
Dependent Claim
13 words
A composition according to claim 4 wherein the ethylenically unsaturated compound is acrylonitrile.
Claim 12
Dependent Claim
13 words
A composition according to claim 4 wherein the ethylenically unsaturated compound is styrene.
References Cited (Backward Citations)
US3331761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |