US4251341A
Expired / Lapsed
US
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Photoinitiators for UV-curable systems
Assignee: BASF Corp
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Filing: 1979-06-15
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Granted: 1981-02-17
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Expires: 1999-06-15
Abstract
Abstract Dialkoxy-acetyl derivatives of aromatic compounds are photosensitizers for the curing of photopolymerisable systems. They can be synthesized from aromatic acetyl compounds(aryl methyl ketones) by reaction with nitrosyl chloride and the corresponding alkanol. Examples of photopolymerizable systems are coatings or printing inks on the basis of unsaturated polyesters or acrylic compounds.
Inventors
- 👤 Louis Felder
- 👤 Rudolf Kirchmayr
- 👤 Andreas Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:38
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/91; C07C; C07C323/00; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71; C07C49/00; C07C49/76; C07C49/84; C07D333/00; C07D333/50; C07D333/76; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
169 words
A photopolymerizable system comprising at least one unsaturated photopolymerizable compound and 0.1 to 20% by weight of a compound of the formulae I or II ##STR11## wherein X represents oxygen or sulphur, R represents alkyl having 1-4 C atoms, alkoxyalkyl having 3-6 C atoms, C 1 -C 4 -alkyl-OCH 2 --CH 2 OCH 2 CH 2 or chloroalkyl having 2-3 C atoms, R 1 represents alkyl having 1-4 C atoms, alkoxy or alkylthio having 1-4 C atoms, cycloalkyl having 5-6 C atoms, aralkyl having 7-9 C atoms, chlorine, bromine, a group of the formula --CO--CH(OR) 2 , or a group of the formula ##STR12## Y represents a direct bond, oxygen or sulphur, R 2 represents hydrogen, alkyl having 1-4 C atoms, alkoxy or alkylthio having 1-4 C atoms, chlorine, bromine or a group --CO--CH(OR) 2 , and R 3 represents hydrogen, alkyl having 1-4 C atoms, alkoxy having 1-4 C atoms, chlorine, bromine, alkoxycarbonyl having 2-5 C atoms, or a group of the formula --CO--CH(OR) 2 as a photoinitiator.
Claim 2
Dependent Claim
169 words
A photopolymerizable system comprising at least one unsaturated photopolymerizable compound and 0.1 to 20% by weight of a compound of the formulae I or II ##STR11## wherein X represents oxygen or sulphur, R represents alkyl having 1-4 C atoms, alkoxyalkyl having 3-6 C atoms, C 1 -C 4 -alkyl-OCH 2 --CH 2 OCH 2 CH 2 or chloroalkyl having 2-3 C atoms, R 1 represents alkyl having 1-4 C atoms, alkoxy or alkylthio having 1-4 C atoms, cycloalkyl having 5-6 C atoms, aralkyl having 7-9 C atoms, chlorine, bromine, a group of the formula --CO--CH(OR) 2 , or a group of the formula ##STR12## Y represents a direct bond, oxygen or sulphur, R 2 represents hydrogen, alkyl having 1-4 C atoms, alkoxy or alkylthio having 1-4 C atoms, chlorine, bromine or a group --CO--CH(OR) 2 , and R 3 represents hydrogen, alkyl having 1-4 C atoms, alkoxy having 1-4 C atoms, chlorine, bromine, alkoxycarbonyl having 2-5 C atoms, or a group of the formula --CO--CH(OR) 2 as a photoinitiator.
Claim 3
Dependent Claim
83 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is a compound of the formula I wherein R represent alkyl having 1-4 C atoms or alkoxyalkyl having 3-4 C atoms, and R 1 represents alkyl having 1-4 C atoms, alkoxy having 1-4 C atoms, chlorine, a group of the formula --CO--CH(OR) 2 , or a group of the formula ##STR13## wherein Y represents a direct bond, oxygen or sulphur, and R 3 represent H, CH 3 , Cl or --CO--CH(OR) 2 .
Claim 4
Dependent Claim
56 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is a compound of the formula I, wherein R represent alkyl having 1-4 C atoms, and R 1 represents methyl, methoxy, chlorine, a group of the formula --CO--CH(OR) 2 , or a group of the formula ##STR14## wherein R 3 represents hydrogen or --CO--CH(OR) 2 .
Claim 5
Dependent Claim
64 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is a compound of the formula I, wherein R represents alkyl having 1-4 C atoms, and R 1 represents methyl, methoxy, a group of the formula --CO--CH(OR) 2 , or a group of the formula ##STR15## wherein R 3 represents hydrogen or --CO--CH(OH) 2 , and Y represents a direct bond, oxygen or sulphur.
Claim 6
Dependent Claim
56 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is a compound of the formula II, wherein X represents oxygen or sulphur, R represents alkyl having 1-4 C atoms or alkoxyalkyl having 3-4 C atoms, and R 2 represents hydrogen, alkyl having 1-4 C atoms, alkoxy having 1-4 C atoms, chlorine or --CO--CH(OR) 2 .
Claim 7
Dependent Claim
37 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is a compound of the formula II wherein X represents oxygen, R represents alkyl having 1-4 C atoms, and R 2 represents hydrogen or --CO--CH(OR) 2 .
Claim 8
Dependent Claim
35 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is a compound of the formula II, wherein X represents oxygen or sulphur, R represents alkyl having 1-4 C atoms, and R 2 represents hydrogen.
Claim 9
Dependent Claim
14 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is 4-diisopropoxyacetyl diphenyl oxide.
Claim 10
Dependent Claim
13 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is 4,4'-bis-(dimethoxyacetyl)-diphenyl oxide.
Claim 11
Dependent Claim
13 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is 4-diethoxyacetyl anisole.
Claim 12
Dependent Claim
14 words
A photopolymerizable system according to claim 1 wherein the photoinitiator is 2-diethoxyacetyl diphenyl oxide.
Claim 13
Dependent Claim
19 words
A photopolymerizable system comprising at least one unsaturated photopolymerizable compound and 0.1 to 20% by weight of 4,4'-bis-(diethoxyacetyl)-diphenyl oxide.
Claim 14
Dependent Claim
19 words
A photopolymerizable system comprising at least one unsaturated photopolymerizable compound and 0.1 to 20% by weight of 4,4'-bis-(diethoxyacetyl)-diphenyl oxide.
Claim 15
Dependent Claim
15 words
Photopolymerisable system according to claim 1, which system is a lacquer or a printing ink.
References Cited (Backward Citations)
GB925445A
Cited
US3458548A
Cited
US3536661A
Cited
US3707302A
Cited
US4071424A
Cited
US4071424B1
Cited
US3801329A
Cited
US3998712A
Cited
US3966573A
Cited
US4131529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |