US4478751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complex salts having high electric conductivity
Assignee: Bayer AG
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Filing: 1982-08-16
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Granted: 1984-10-23
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Expires: 2002-08-16
Abstract
Abstract Complex salts of 7,7,8,8-tetracyano-p-quinodimethane having high electric conductivity, process for the preparation thereof and the use thereof as electric conductors, semiconductors or photoconductors and for antistatic finishing of plastics products.
Inventors
- 👤 Friedrich Jonas
- 👤 Jurgen Hocker
- 👤 Bruno Broich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:35
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/121; C; C07; C07C; C07C255/00; C08; C08K; C08K5/00; C08K5/0091; C08K5/36; H10; H10K; H10K85/00; H10K85/60; H10K85/611
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
A complex corresponding to the following general formula (I): S.sup.⊕ R.sup.1 R.sup.2 R.sup.3 [X.TCNQ].sup.⊖ (I) wherein R 1 , R 2 and R 3 independently represent alkyl, optionally substituted cycloalkyl or optionally substituted aralkyl; X represents halogen; and TCNQ represents 7,7,8,8-tetracyano-p-quinodimethane.
Claim 2
Dependent Claim
41 words
A complex corresponding to the following general formula (I): S.sup.⊕ R.sup.1 R.sup.2 R.sup.3 [X.TCNQ].sup.⊖ (I) wherein R 1 , R 2 and R 3 independently represent alkyl, optionally substituted cycloalkyl or optionally substituted aralkyl; X represents halogen; and TCNQ represents 7,7,8,8-tetracyano-p-quinodimethane.
Claim 3
Dependent Claim
65 words
A process for the preparation of a complex as claimed in claim 1 which comprises reacting a tertiary sulphonium halide corresponding to the following general formula (II): S.sup.⊕ R.sup.1 R.sup.2 R.sup.3 X.sup.⊖ (II) wherein R 1 , R 2 , R 3 and X are as defined in claim 1; with 7,7,8,8-tetracyano-p-quinodimethane in an organic solvent at a temperature of from 0° to 120° C.
Claim 4
Dependent Claim
58 words
A process as claimed in claim 2 in which the tertiary sulphonium halide is selected from trimethyl sulphonium iodide and bromide, triethyl sulphonium iodide and bromide, tripropyl sulphonium bromide and iodide, tributyl sulphonium bromide and iodide and dimethyl ethyl sulphonium bromide and iodide, cyclohexyldimethyl sulphonium iodide, dicyclohexylmethyl sulphonium iodide, benzyldimethyl sulphonium iodide, tribenzyl sulphonium iodide, tribenzyl sulphonium bromide.
References Cited (Backward Citations)
US3162641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |