US5347015A
Expired / Lapsed
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Disulfides
Assignee: BASF SE
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Filing: 1992-08-20
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Granted: 1994-09-13
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Expires: 2012-08-20
Abstract
Abstract Disulfides of the general formula X1-(CH2)n-S-S-(CH2)n-X2 where X1 and X2 are identical to one another and are each -Br, -N-phthalimide, -NH2, -OOC-(CH2)3-COOH, -OSO2-CH3, -NH-(CH2)2-NH2, -SO3H or -SO3-M+ in which M+ is an alkali metal ion and n is from 11 to 25, or X1 is -OH and X2 is -Br or X1 and X2 are each -COO-CH2-CH3 and n is from 10 to 25, are suitable for the production of monomolecular layers on noble metal substrates and for the production of multimolecular layers.
Inventors
- 👤 Harald Keller
- 👤 Wolfgang Schrepp
- 👤 Harald Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:21
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/01; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07C323/02; C07C323/03; C07C323/10; C07C323/11; C07C323/12; C07C323/23; C07C323/24; C07C323/25; C07C323/50; C07C323/51; C07C323/52; C07C323/64; C07C323/66; C23; C23C; C23C22/00; C23C22/02; C23C22/05; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/161
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
113 words
A disulfide of the formula (I) X.sup.1 --(CH.sub.2).sub.n --S--S--(CH.sub.2).sub.n --X.sup.2 (I) where X 1 and X 2 are identical to one another and are each --Br, phthalimido, --NH 2 , --OOC--(CH 2 ) 3 --COOH, --OSO 2 --CH 3 , --NH--(CH 2 ) 2 --NH2, --SO 3 H or --SO 3 - M + in which M + is Li + , Na + or K + , and n is an integer from 11 to 13, or X 1 is --OH and X 2 is --Br and n is from 11 to 13, or X 1 and X 2 are each --COO--CH 2 --CH 3 and n is from 11 to 13.
Claim 2
Dependent Claim
113 words
A disulfide of the formula (I) X.sup.1 --(CH.sub.2).sub.n --S--S--(CH.sub.2).sub.n --X.sup.2 (I) where X 1 and X 2 are identical to one another and are each --Br, phthalimido, --NH 2 , --OOC--(CH 2 ) 3 --COOH, --OSO 2 --CH 3 , --NH--(CH 2 ) 2 --NH2, --SO 3 H or --SO 3 - M + in which M + is Li + , Na + or K + , and n is an integer from 11 to 13, or X 1 is --OH and X 2 is --Br and n is from 11 to 13, or X 1 and X 2 are each --COO--CH 2 --CH 3 and n is from 11 to 13.
Claim 3
Dependent Claim
54 words
A disulfide of the formula (I) as defined in claim 1 where X 1 and X 2 are identical to one another and are each phthalimido, --OSO 2 --CH 3 , or --SO 3 H or SO 3 M 1 in which M 1 is Li + , Na + or K + .
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-12 | 1998-03-14 | 1998-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-12 | 2002-03-14 | 2002-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-12 | 2006-03-14 | 2006-09-13 | $7700.00 | Window Closed / Lapsed |