Patent US4398051A successfully refreshed from Google Patents.
US4398051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of tertiary olefins
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1981-10-16
•
Granted: 1983-08-09
•
Expires: 2001-10-16
Abstract
Abstract Method of producing tertiary olefins from alkyl tert-alkyl ethers using a catalyst produced by calcining an aluminum compound supported on a carrier containing silicon oxides at a temperature above that at which the aluminum compound decomposes.
Inventors
- 👤 Masashi Araki
- 👤 Takuo Hibi
- 👤 Tomofumi Kawabe
- 👤 Takeshi Yamahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:31
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/12; C; C07; C07C; C07C1/00; C07C1/20; C07C2521/00; C07C2521/02; C07C2521/06; C07C2521/08; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/24; C07C2527/25
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
70 words
In a method of producing a tertiary olefin using an alkyl tert-alkyl ether as raw material, the improvement wherein the method is conducted in the presence of a catalyst produced by supporting at least on part by weight of an aluminum compound on 100 parts by weight of a carrier containing silicon oxides and calcining the resultant produce at a temperature above the temperature at which said aluminum compound decomposes.
Claim 2
Dependent Claim
70 words
In a method of producing a tertiary olefin using an alkyl tert-alkyl ether as raw material, the improvement wherein the method is conducted in the presence of a catalyst produced by supporting at least on part by weight of an aluminum compound on 100 parts by weight of a carrier containing silicon oxides and calcining the resultant produce at a temperature above the temperature at which said aluminum compound decomposes.
Claim 3
Dependent Claim
18 words
A method according to claim 1, wherein said aluminum compound is aluminum sulfate, aluminum nitrate or aluminum hydroxide.
Claim 4
Dependent Claim
16 words
A method according to claim 2, wherein the aluminum compound is aluminum sulfate or aluminum nitrate.
Claim 5
Dependent Claim
21 words
A method according to claim 1, wherein said carrier containing silicon oxides is one prepared from silica or montmorillonite type minerals.
Claim 6
Dependent Claim
33 words
A method according to claim 1, wherein the amount of the aluminum compound supported on the carrier is 1 to 50 parts by weight based on 100 parts by weight of the carrier.
Claim 7
Dependent Claim
35 words
A method according to claim 1, wherein the amount of aluminum sulfate or aluminum nitrate supported on the carrier is 5 to 30 parts by weight based on 100 parts by weight of the carrier.
Claim 8
Dependent Claim
15 words
A method according to claim 1, wherein the calcining temperature is 500° to 1200° C.
Claim 9
Dependent Claim
15 words
A method according to claim 1, wherein the calcining temperature is 700° to 1000° C.
Claim 10
Dependent Claim
15 words
A method according to claim 1, wherein the calcining temperature is 700° to 1200° C.
Claim 11
Dependent Claim
20 words
A method according to claim 1, wherein the calcining temperature nitrate supported on the carrier is 750° to 1000° C.
Claim 12
Dependent Claim
15 words
A method according to claim 1, wherein said alkyl tert-alkyl ether is methyl tert-butyl ether.
Claim 13
Dependent Claim
19 words
A method according to claim 1, wherein the aluminum compound is supported on a carrier by an impregnation method.
References Cited (Backward Citations)
US3170000A
Cited
US3401210A
Cited
US4006198A
Cited
US4147763A
Cited
US4254296A
Cited
US4320232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |