Patent US1883167A successfully refreshed from Google Patents.
Patent US4281390A successfully refreshed from Google Patents.
US4147604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable binders containing diaminobenzophenones
Assignee: BASF SE
•
Filing: 1978-07-03
•
Granted: 1979-04-03
•
Expires: 1998-07-03
Abstract
Abstract Photopolymerizable binders for printing inks, coatings and printing plates, based on olefinically unsaturated compounds, with or without a polymeric binder component, and containing a diaminobenzophenone compound as the photosensitizer, are improved in respect of their toxicity and shelf life if the diaminobenzophenone compound has the formula R 1 R 2 N--C 6 H 4 --CO--C 6 H 4 --NR 3 R 4 , where R 1 and R 3 are H(OR 5 ) x radicals, R 5 being alkylene of 2 or 3 carbon atoms and x being 1, 2 or 3, and R 2 and R 4 are each alkyl of 1 to 4 carbon atoms or are radicals of the type of R 1 and R 3 .
Inventors
- 👤 Werner Kuesters
- 👤 Guenter Heil
- 👤 Martin Fischer
- 👤 Manfred Eisert
- 👤 Hellmut Kast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:41
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/101; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/109; Y10S430/114; Y10S430/124
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A photopolymerizable binder for printing inks, coatings and printing plates, which consists essentially of at least one photopolymerizable olefinically unsaturated compound, with or without a polymeric binder component, and a diaminobenzophenone compound as the photosensitizer, wherein the diaminobenzophenone compound has the formula (I) ##STR5## where R 1 and R 3 are H(OR 5 ) x radicals, R 5 being alkylene of 2 or 3 carbon atoms and x being 1, 2 or 3, and R 2 and R 4 are each alkyl of 1 to 4 carbon atoms or are radicals of the type of R 1 and R 3 .
Claim 2
Dependent Claim
101 words
A photopolymerizable binder for printing inks, coatings and printing plates, which consists essentially of at least one photopolymerizable olefinically unsaturated compound, with or without a polymeric binder component, and a diaminobenzophenone compound as the photosensitizer, wherein the diaminobenzophenone compound has the formula (I) ##STR5## where R 1 and R 3 are H(OR 5 ) x radicals, R 5 being alkylene of 2 or 3 carbon atoms and x being 1, 2 or 3, and R 2 and R 4 are each alkyl of 1 to 4 carbon atoms or are radicals of the type of R 1 and R 3 .
Claim 3
Dependent Claim
38 words
A photopolymerizable binder as claimed in claim 1, which contains, in addition to a diaminobenzophenone compound of the formula (I), benzophenone or a benzophenone derivative which has a low absorption in the range from 300 to 380 nm.
Claim 4
Dependent Claim
27 words
A photopolymerizable binder as claimed in claim 1, wherein the diaminobenzophenone compound of the formula (I) is 4,4'-bis-(N-hydroxyethyl-N-alkylamino)-benzophenone, where alkyl is of 1 to 4 carbon atoms.
References Cited (Backward Citations)
US3933682A
Cited
US3945833A
Cited
US4056453A
Cited
GB1486411A
Cited
US3966573A
Cited
US4067791A
Cited
US4048034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |