US4447520A
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US
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Acylphosphine oxides and their use
Assignee: BASF SE
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Filing: 1982-08-19
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Granted: 1984-05-08
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Expires: 2002-08-19
Abstract
Abstract Acylphosphine oxides of the general formula ##STR1## where R 1 is methyl or ethyl, R 2 is a branched or straight-chain alkyl radical or chlorine, alkoxy or hydrogen, R 3 and R 4 are identical or different, and are each alkyl, alkoxy, alkylthio or chlorine and R 5 is hydrogen, chlorine, alkoxy, alkylthio or alkyl, may be used as photoinitiators in photopolymerizable materials.
Inventors
- 👤 Andreas Henne
- 👤 Anton Hesse
- 👤 Manfred Jacobi
- 👤 Gunnar Schornick
- 👤 Rudolf Vyvial
- 👤 Klaus Holoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:52
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; C07F9/53; C07F9/5337; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5397; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/124
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
An acylphosphine oxide which may be used as a photoinitiator and is of the formula (I) ##STR13## where R 1 is methyl, R 2 is a branched or straight-chain alkyl radical of 1 to 4 carbon atoms, chlorine, alkoxy of 1 to 4 carbon atoms or hydrogen, R 3 and R 4 are identical or different, and are each alkyl, alkoxy or alkylthio, each of 1 to 4 carbon atoms, or chlorine, and R 5 is hydrogen, chlorine, or alkoxy or alkylthio, each of 1 to 6 carbon atoms, or a branched or straight-chain alkyl radical of 1 to 12 carbon atoms.
Claim 2
Dependent Claim
102 words
An acylphosphine oxide which may be used as a photoinitiator and is of the formula (I) ##STR13## where R 1 is methyl, R 2 is a branched or straight-chain alkyl radical of 1 to 4 carbon atoms, chlorine, alkoxy of 1 to 4 carbon atoms or hydrogen, R 3 and R 4 are identical or different, and are each alkyl, alkoxy or alkylthio, each of 1 to 4 carbon atoms, or chlorine, and R 5 is hydrogen, chlorine, or alkoxy or alkylthio, each of 1 to 6 carbon atoms, or a branched or straight-chain alkyl radical of 1 to 12 carbon atoms.
Claim 3
Dependent Claim
23 words
An acylphosphine compound as defined in claim 1, wherein the phenyl radical substituted by R 1 and R 2 is 2-methylphenyl or 2,5-dimethylphenyl.
Claim 4
Dependent Claim
32 words
An acylphosphine compound as defined in claim 1, wherein the phenyl radical substituted by R 3 , R 4 and R 5 is 2,5-dimethylphenyl, 2,4,6-trimethylphenyl, 2,3,6-trimethylphenyl, 2,6-dimethoxyphenyl, 2,6-dichlorophenyl, 2,6-bis-(methylthio)-phenyl, 2,6-dimethyl-4-tert.-butylphenyl or 2,6-dimethyl-4-octylphenyl.
Claim 5
Dependent Claim
33 words
A photopolymerizable composition which comprises at least one photopolymerizable monomer having one or more C--C multiple bonds and, as a photoinitiator, an acylphosphine oxide of the formula I as defined in claim 1.
Claim 6
Dependent Claim
33 words
A photopolymerizable composition which comprises at least one photopolymerizable monomer having one or more C--C multiple bonds and, as a photoinitiator, an acylphosphine oxide of the formula I as defined in claim 2.
Claim 7
Dependent Claim
33 words
A photopolymerizable composition which comprises at least one photopolymerizable monomer having one or more C--C multiple bonds and, as a photoinitiator, an acylphosphine oxide of the formula I as defined in claim 3.
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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) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |