Patent US4059646A successfully refreshed from Google Patents.
US4059646A
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Process for producing triptane by contacting methanol or dimethyl ether with zinc bromide
Assignee: Shell USA Inc
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Filing: 1975-10-02
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Granted: 1977-11-22
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Expires: 1995-10-02
Abstract
Abstract Method for the production of triptane comprising contacting a reactant selected from methanol, dimethyl ether, or mixtures thereof, with zinc bromide at a temperature of from about 210° to about 245° C.
Inventors
- 👤 Milton M. Wald
- 👤 Leo Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:18
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C2527/00; C07C2527/06; C07C2527/138
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
55 words
A method for the production of triptane comprising contacting a material selected from the group consisting of methanol; dimethyl ether; other materials which react to provide methanol in situ, other reaction products, if any, being non-interfering; and mixtures thereof, with an effective amount of ZnBr 2 at a temperature of from 210° to 245° C.
Claim 2
Independent Claim
55 words
A method for the production of triptane comprising contacting a material selected from the group consisting of methanol; dimethyl ether; other materials which react to provide methanol in situ, other reaction products, if any, being non-interfering; and mixtures thereof, with an effective amount of ZnBr 2 at a temperature of from 210° to 245° C.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein the temperature is from 215° to 240° C.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the temperature is from 220° to 235° C.
Claim 5
Independent Claim
26 words
A method for the production of triptane comprising contacting methanol with an effective amount of ZnBr 2 at a temperature of from 210° to 245° C.
Claim 6
Independent Claim
26 words
A method for the production of triptane comprising contacting methanol with an effective amount of ZnBr 2 at a temperature of from 210° to 245° C.
Claim 7
Dependent Claim
14 words
The method of claim 4 wherein the temperature is from 215° to 240° C.
Claim 8
Dependent Claim
14 words
The method of claim 4 wherein the temperature is from 220° to 235° C.
Claim 9
Independent Claim
27 words
A method for the production of triptane comprising contacting dimethyl ether with an effective amount of ZnBr 2 at a temperature of from 210° to 245° C.
Claim 10
Independent Claim
27 words
A method for the production of triptane comprising contacting dimethyl ether with an effective amount of ZnBr 2 at a temperature of from 210° to 245° C.
References Cited (Backward Citations)
US2492984A
Cited
US2456584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |