US4806664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel tetraphenyldithiolene complexes, asymmetrically substituted benzoins, and optical recording materials containing the novel complexes
Assignee: BASF SE
•
Filing: 1987-06-08
•
Granted: 1989-02-21
•
Expires: 2007-06-08
Abstract
Abstract Tetraphenyldithiolene complexes of the formula ##STR1## and novel asymmetrically substituted benzoins of the formula ##STR2## where X 1 , X 2 and X have the meanings stated in the description and Me is nickel, palladium or platinum. The complexes have very high absorption in the range from 800 to 950 nm and are readily soluble in the plastics used for the production of optical recording materials. The recording materials produced using these complexes have a very high signal/noise ratio.
Inventors
- 👤 Wolfgang Schrott
- 👤 Peter Neumann
- 👤 Bernhard Albert
- 👤 Michael Thomas
- 👤 Helmut Barzynski
- 👤 Klaus-Dieter Schomann
- 👤 Harald Kuppelmaier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:59
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/245; C; C07; C07C; C07C205/00; C07C205/45; C07C321/00; C07C321/02; C07C321/10; C07C323/00; C07C323/01; C07C323/02; C07C323/07; C07C45/00; C07C45/45; C07C45/46; C07C45/61; C07C45/63; C07C45/64; C07C45/67; C07C45/68; C07C49/00; C07C49/76; C07C49/782; C07C49/82; C07C49/83; C07C49/84; C09; C09B; C09B57/00; C09B57/10; G11B7/249; Y; Y10; Y10S; Y10S430/00; Y10S430/145; Y10S430/146
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
A tetraphenyldithiolene complex of the formula ##STR16## where one radical X 1 and one radical X 2 are each straight-chain or branched C 5-30 alkyl in the 4-position, the other radical X 1 and the other radical X 2 are each fluorine, chlorine or bromine in the 2-, 3- or 4-position, and Me is nickel, palladium or platinum.
Claim 2
Dependent Claim
58 words
A tetraphenyldithiolene complex of the formula ##STR16## where one radical X 1 and one radical X 2 are each straight-chain or branched C 5-30 alkyl in the 4-position, the other radical X 1 and the other radical X 2 are each fluorine, chlorine or bromine in the 2-, 3- or 4-position, and Me is nickel, palladium or platinum.
Claim 3
Dependent Claim
24 words
The tetraphenyldithiolene complex of claim 1, wherein one radical X 1 and one radical X 2 are each straight-chain or branched C 8-24 alkyl.
Claim 4
Dependent Claim
10 words
The tetraphenyldithiolene complex of claim 1, wherein Me is platinum.
Claim 5
Dependent Claim
64 words
A tetraphenyldithiolene complex of the formula ##STR17## were one radical X 1 and one radical X 2 are each straight-chain or branched C 14-30 alkyl in the 4-position, the other radical X 1 and the other radical X 2 are each hydrogen, C 1-12 alkyl, C 1-12 alkoxy, fluorine, chlorine or bromine in the 2-, 3-, 4-position, and Me is nickel, palladium or platinum.
Claim 6
Dependent Claim
64 words
A tetraphenyldithiolene complex of the formula ##STR17## were one radical X 1 and one radical X 2 are each straight-chain or branched C 14-30 alkyl in the 4-position, the other radical X 1 and the other radical X 2 are each hydrogen, C 1-12 alkyl, C 1-12 alkoxy, fluorine, chlorine or bromine in the 2-, 3-, 4-position, and Me is nickel, palladium or platinum.
Claim 7
Dependent Claim
28 words
The tetraphenyldithiolene complex of claim 4, wherein the other radical X 1 and the other radical X 2 are each methyl, ethyl, methoxy, ethoxy, fluorine, bromine or chlorine.
Claim 8
Dependent Claim
10 words
The tetraphenyldithiolene complex of claim 4, wherein Me is platinum.
References Cited (Backward Citations)
US4219826A
Cited
US4320489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |