Patent EP0139433A1 successfully refreshed from Google Patents.
US4237267A
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US
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Disulfide compounds of a carrier, having S--S exchange reactivity
Assignee: Toyo Jozo KK
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Filing: 1979-04-30
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Granted: 1980-12-02
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Expires: 1999-04-30
Abstract
Abstract A disulfide compound of a carrier, having S--S exchange reactivity, of the formula R--S--S--X.sub.1 --X.sub.2 --A [I] wherein R is 2-benzothiazolyl, X 1 is a spacer group directly bound to the --S--S-- and comprises a plurality of carbon atoms in a straight or branched chain, X 2 is an imide or amide bonding group, and A is an insoluble carrier selected from the group consisting of beads gel agarose residue, gamma-aminopropylated nylon beads residue and a residual group of partially reduced polyacrylonitrile porous granules or fibers.
Inventors
- 👤 Tsuneo Okuyama
- 👤 Tadashiro Fujii
- 👤 Nobuaki Nakagawa
- 👤 Kikuo Kotani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:29
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/70; C07D213/71; C07D213/89; C07D277/00; C07D277/02; C07D277/08; C07D277/12; C07D277/16; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/76; C07D277/78; C07D417/00; C07D417/02; C07D417/12; C08; C08B; C08B37/00; C08B37/0006; C08B37/0036; C08B37/0039; C12; C12N; C12N11/00; C12N11/02; C12N9/00; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
A disulfide compound of a carrier, having S--S exchange reactivity, of the formula R--S--S--X.sub.1 --X.sub.2 --A [I] wherein R is 2-benzothiazolyl [or 2-pyridyl-N-oxide], X 1 is a spacer group directly bound to the --S--S-- and comprises a plurality of carbon atoms in a straight or branched chain, X 2 is an imide or amide bonding group, and A is an insoluble carrier selected from the group consisting of beads gel agarose residue, gamma-aminopropylated nylon beads residue and a residual group of partially reduced polyacrylonitrile porous granules or fibers.
Claim 2
Dependent Claim
88 words
A disulfide compound of a carrier, having S--S exchange reactivity, of the formula R--S--S--X.sub.1 --X.sub.2 --A [I] wherein R is 2-benzothiazolyl [or 2-pyridyl-N-oxide], X 1 is a spacer group directly bound to the --S--S-- and comprises a plurality of carbon atoms in a straight or branched chain, X 2 is an imide or amide bonding group, and A is an insoluble carrier selected from the group consisting of beads gel agarose residue, gamma-aminopropylated nylon beads residue and a residual group of partially reduced polyacrylonitrile porous granules or fibers.
Claim 3
Dependent Claim
14 words
A disulfide compound of the formula ##STR51## wherein A is beads gel agarose residue.
Claim 4
Dependent Claim
14 words
A disulfide compound of the formula ##STR51## wherein A is beads gel agarose residue.
Claim 5
Dependent Claim
26 words
A disulfide compound of the formula ##STR52## wherein A is γ-aminopropylated nylon beads residue or a residual group of partially reduced polyacrylonitrile porous granules or fibers.
Claim 6
Dependent Claim
26 words
A disulfide compound of the formula ##STR52## wherein A is γ-aminopropylated nylon beads residue or a residual group of partially reduced polyacrylonitrile porous granules or fibers.
References Cited (Backward Citations)
US2510893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |