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US4302594A
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Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers
Assignee: Tolsa SA
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Filing: 1980-03-24
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Granted: 1981-11-24
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Expires: 2000-03-24
Abstract
Abstract The present invention relates to a process for obtaining dilane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, the reaction being carried out by placing the finely divided sepiolite and the alkoxy-silane in close contact, either by vaporization of the latter by the action of heat or by the spraying thereof with nitrogen, the contact taking place in countercurrent in a column of suitable dimensions, the reaction temperature ranging between room temperature and the vaporization temperature of the alkoxy-silane, further characterized in that the silane derivative of the sepiolite is subsequently dried to 110° C. to remove the reaction byproducts.
Inventors
- 👤 Antonio Alvarez Berenguer
- 👤 Fernando R. Sanchez Montero
- 👤 Juan J. Aragon Martinez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:58
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/28; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K9/00; C08K9/02; C08K9/04; C08K9/06; C01; C01P; C01P2004/00; C01P2004/80
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
57 words
A process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes, characterized by the steps of contacting finely-divided sepiolite in hydrated form with a vaporized alkoxy-silane in countercurrent vertical flow at temperatures between room temperature and the normal boiling point of the alkoxy-silane, followed by heating the sepiolite at 110° C. to remove the reaction byproducts.
Claim 2
Dependent Claim
57 words
A process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes, characterized by the steps of contacting finely-divided sepiolite in hydrated form with a vaporized alkoxy-silane in countercurrent vertical flow at temperatures between room temperature and the normal boiling point of the alkoxy-silane, followed by heating the sepiolite at 110° C. to remove the reaction byproducts.
Claim 3
Dependent Claim
32 words
Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, according to claim 1, characterized in that vinyl-triethoxy-silane is used as the reacting substance.
Claim 4
Dependent Claim
33 words
Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, according to claim 1, characterized in that vinyl-tri (β-methoxy-ethoxy)-silane is used as the reacting substance.
Claim 5
Dependent Claim
32 words
Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, according to claim 1, characterized in that γ-methacryl-oxypropyl-trimethoxysilane is used as the reacting substance.
Claim 6
Dependent Claim
32 words
Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, according to claim 1, characterized in that γ-amino-propyl-triethoxy-silane is used as the reacting substance.
Claim 7
Dependent Claim
32 words
Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, according to claim 1, characterized in that γ-amino-propyl-trimethoxy-silane is used as the reacting substance.
Claim 8
Dependent Claim
32 words
Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, according to claim 1, characterized in that γ-glycidyl-oxypropyl-trimethoxy-silane is used as the reacting substance.
Claim 9
Dependent Claim
32 words
Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcig capacity in polymers, according to claim 1, characterized in that γ-mercapto-propyl-trimethoxy-silane is used as the reacting substance.
Claim 10
Dependent Claim
32 words
Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, according to claim 1, characterized in that Bis-(3-triethoxy-silyl-propyl)tetrasulfide is used as the reacting substance.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |