Patent US4034139A successfully refreshed from Google Patents.
US4034139A
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Grafted mineral carriers for fixing enzymes
Assignee: Rhone Poulenc Industries SA
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Filing: 1975-04-16
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Granted: 1977-07-05
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Expires: 1995-04-16
Abstract
Abstract The invention concerns grafted mineral carriers comprising oxides, hydroxides and other insoluble, porous mineral compounds, upon which are grafted haloalkylsilane groups which may or may not be substituted and whose alkyl residue comprises from 3 to 11 carbon atoms. They are used as industrial catalyst carriers, in chromatography and more particularly for fixing enzymes.
Inventors
- 👤 Honore Mazarguil
- 👤 Francois Meiller
- 👤 Pierre Monsan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:51
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/003; B01J31/02; B01J31/0272; C; C03; C03C; C03C17/00; C03C17/28; C03C17/30; C04; C04B; C04B20/00; C04B20/10; C04B20/1051; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4911; C04B41/4922; C04B41/4933; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C12; C12N; C12N11/00; C12N11/14; B01J35/00; B01J35/40; B01J35/60; B01J35/61; B01J35/613; B01J35/615; B01J35/63; B01J35/635; B01J35/638; B01J35/64; B01J35/653; B01J35/657; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/2996; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
Grafted mineral carriers comprising oxides, hydroxides or other porous, insoluble mineral compounds having a grain size range of from 40μ to 5 mm, a specific surface area of from 2 to 600 sq. m/g, a pore diameter of from 50 to 10,000 A and a pore volume of from 0.5 to 1.8 ml/g in which a mineral carrier having hydroxyl groups is grafted with a substituted or unsubstituted haloalkylsilane having the general formula ##STR2## in which: X represents a chlorine, bromine or iodine atom; n is an integer of from 3 to 11; A, b and C, which are the same or different, are selected from the group consisting of a chlorine atom, a methoxy, ethoxy, methyl or ethyl group, in which at least one of the substituents A, B or C is reacted with an OH group of the carrier.
Claim 2
Dependent Claim
141 words
Grafted mineral carriers comprising oxides, hydroxides or other porous, insoluble mineral compounds having a grain size range of from 40μ to 5 mm, a specific surface area of from 2 to 600 sq. m/g, a pore diameter of from 50 to 10,000 A and a pore volume of from 0.5 to 1.8 ml/g in which a mineral carrier having hydroxyl groups is grafted with a substituted or unsubstituted haloalkylsilane having the general formula ##STR2## in which: X represents a chlorine, bromine or iodine atom; n is an integer of from 3 to 11; A, b and C, which are the same or different, are selected from the group consisting of a chlorine atom, a methoxy, ethoxy, methyl or ethyl group, in which at least one of the substituents A, B or C is reacted with an OH group of the carrier.
Claim 3
Dependent Claim
41 words
A process for the preparation of the carriers according to claim 1, characterized in that a mineral carrier having hydroxyl groups is reacted with a haloalkylsilane having 1 to 3 groups which are reactive with the hydroxyl groups of the carrier.
Claim 4
Dependent Claim
15 words
A process according to claim 2, characterized in that the mineral carrier has hydroxyl groups.
Claim 5
Dependent Claim
23 words
A process according to claim 2, characterized in that the carrier is selected from the group consisting of silicates, metal oxides and silicas.
Claim 6
Dependent Claim
25 words
A process according to claim 2, characterized in that the haloalkylsilane is selected from the group consisting of triethoxy-bromopropylsilane, trimethoxy-iodopropylsilane, triethoxy-iodopropylsilane, triethoxy-chlorobutylsilane, trichloro-chloropropylsilane, dimethylchloro-chloropropylsilane, methyldichloro-iodoundecylsilane.
Claim 7
Dependent Claim
14 words
A process as claimed in claim 2 in which the carrier is an alumina.
Claim 8
Dependent Claim
13 words
A process as claimed in claim 2 in which the carrier is brick.
Claim 9
Dependent Claim
13 words
A process as claimed in claim 2 in which the carrier is glass.
References Cited (Backward Citations)
US3560254A
Cited
US3830738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |