US4721734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive hydroxylalkylphenones
Assignee: BASF Corp
•
Filing: 1984-08-31
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Granted: 1988-01-26
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Expires: 2004-08-31
Abstract
Abstract Compounds of the formula ##STR1## wherein R 1 is hydrogen, chlorine, phenyl, dialkylamino of 2-4 carbon atoms or alkyl or alkoxy each of up to 18 carbon atoms; R 2 is hydrogen, chlorine, bromine or alkyl or alkoxy each of up to 4 carbon atoms; R 3 and R 4 , which can be the same or different, each is hydrogen or alkyl of up to 6 carbon atoms; R 5 is hydrogen or alkyl or alkanoyl each of up to 4 carbon atoms; and R 6 is hydrogen or methyl, with the proviso that not all of R 1 to R 6 simultaneously are hydrogen, are effective photosensitizers, especially for photopolymerization of unsaturated compounds and for hardening of printing dyes.
Inventors
- 👤 Juergen Gehlhaus
- 👤 Manfred Kieser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:31
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; C; C07; C07C; C07C45/00; C07C45/004; C07C45/45; C07C45/46; C07C45/61; C07C45/63; C07C45/64; C07C45/67; C07C45/673; C07C45/68; C07C45/70; C07C45/71; C07C49/00; C07C49/76; C07C49/80; C07C49/82; C07C49/83; C07C49/84; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0407; C08F299/0421; C08F299/0428; C08F299/0435; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/10; C08K5/16; C08K5/17; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/101; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/124
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
124 words
In a method of photopolymerizing a photopolymerizable composition comprising at least one photopolymerizable unsaturated compound and a photosensitizingly effective amount of at least one photosensitizer, comprising irradiating the photopolymerizable composition with effective radiation, the improvement wherein the photosensitizer comprises at least one compound of the formula ##STR13## wherein R 1 is hydrogen, chlorine, phenyl, dialkylamino of 2-4 C-atoms or alkyl or alkoxy each of up to 18 C-atoms; R 2 is hydrogen, chlorine, bromine or alkyl or alkoxy each of up to 4 C-atoms; R 3 and R 4 which can be the same or different, each is alkyl of up to 6 C-atoms; and R 5 is alkyl or alkanoyl each of up to 4 C-atoms and R 6 is hydrogen or methyl.
Claim 2
Dependent Claim
124 words
In a method of photopolymerizing a photopolymerizable composition comprising at least one photopolymerizable unsaturated compound and a photosensitizingly effective amount of at least one photosensitizer, comprising irradiating the photopolymerizable composition with effective radiation, the improvement wherein the photosensitizer comprises at least one compound of the formula ##STR13## wherein R 1 is hydrogen, chlorine, phenyl, dialkylamino of 2-4 C-atoms or alkyl or alkoxy each of up to 18 C-atoms; R 2 is hydrogen, chlorine, bromine or alkyl or alkoxy each of up to 4 C-atoms; R 3 and R 4 which can be the same or different, each is alkyl of up to 6 C-atoms; and R 5 is alkyl or alkanoyl each of up to 4 C-atoms and R 6 is hydrogen or methyl.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the photopolymerizable composition is a printing dye.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein the photopolymerizable composition additionally comprises at least one photosensitizer different from that recited in claim 1.
Claim 5
Dependent Claim
21 words
The method of claim 2 wherein said composition additionally comprises at least one photosensitizer different from that recited in claim 1.
Claim 6
Dependent Claim
10 words
A method of claim 1, wherein R 5 is alkanoyl.
Claim 7
Dependent Claim
10 words
A method of claim 1, wherein R 5 is alkyl.
Claim 8
Dependent Claim
101 words
A photopolymerizable composition comprising at least one photopolymerizable unsaturated compound and a photosensitizingly effective amount of at least one compound of the formula ##STR14## wherein R 1 is hydrogen, chlorine, phenyl, dialkylamino of 2-4 C-atoms or alkyl or alkoxy each of up to 18 C-atoms; R 2 is hydrogen, chlorine, bromine or alkyl or alkoxy each of up to 4 C-atoms; R 3 and R 4 which can be the same or different, each is alkyl of up to 6 C-atoms; and R 5 is alkyl or alkanoyl each of up to 4 C-atoms and R 6 is hydrogen or methyl.
Claim 9
Dependent Claim
101 words
A photopolymerizable composition comprising at least one photopolymerizable unsaturated compound and a photosensitizingly effective amount of at least one compound of the formula ##STR14## wherein R 1 is hydrogen, chlorine, phenyl, dialkylamino of 2-4 C-atoms or alkyl or alkoxy each of up to 18 C-atoms; R 2 is hydrogen, chlorine, bromine or alkyl or alkoxy each of up to 4 C-atoms; R 3 and R 4 which can be the same or different, each is alkyl of up to 6 C-atoms; and R 5 is alkyl or alkanoyl each of up to 4 C-atoms and R 6 is hydrogen or methyl.
Claim 10
Dependent Claim
11 words
A photopolymerizable composition of claim 7 which is a printing dye.
Claim 11
Dependent Claim
17 words
The photopolymerizable composition of claim 7 wherein the amount of compound of said formula is 0.05-15 wt.%.
Claim 12
Dependent Claim
10 words
A composition of claim 7, wherein R 5 is alkanoyl.
Claim 13
Dependent Claim
10 words
A composition of claim 7, wherein R 5 is alkyl.
References Cited (Backward Citations)
US2647080A
Cited
US2892865A
Cited
US3330659A
Cited
US3660542A
Cited
US4071424A
Cited
US4071424B1
Cited
FR2156486A1
Cited
US3801329A
Cited
US3933682A
Cited
DE2432563A1
Cited
DE2343362A1
Cited
US3965157A
Cited
JPS511780A
Cited
US4017652A
Cited
US4017652B1
Cited
US4054719A
Cited
US4347111A
Cited
US4308400A
Cited
US4315807A
Cited
US4318791A
Cited
US4321118A
Cited
US4284485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |