US4916100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a catalyst system for selective alkylation of toluene with propylene
Assignee: Neste Oyj
•
Filing: 1987-12-29
•
Granted: 1990-04-10
•
Expires: 2007-12-29
Abstract
Abstract The object of the invention is a catalyst system for selective alkylation of toluene with propylene. The catalyst system contains metallic sodium which has been thermally decomposed from sodium azide (NaN 3 ) or sodium oxide (Na 2 O) onto the surface of solid K 2 CO 3 . The invention further concerns a procedure for preparing this catalyst system and a procedure for selectively alkylating toluene with propylene in the presence of a catalyst system.
Inventors
- 👤 Pekka Knuuttila
- 👤 Aila Ali-Hokka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:19
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/02; B01J23/04; C; C07; C07C; C07C2/00; C07C2/54; C07C2/72; C07C2523/00; C07C2523/02; C07C2523/04; C07C2527/00; C07C2527/20; C07C2527/232
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
Procedure for preparing a catalyst system for selective alkylation of toluene with propylene, containing metallic sodium which has been thermally decomposed from a compound containing sodium, onto the surface of solid K 2 CO 3 , wherein the compound containing sodium is thermally decomposed onto the surface of the solid K 2 CO 3 , and the compound containing sodium is sodium azide (NaN 3 ).
Claim 2
Dependent Claim
66 words
Procedure for preparing a catalyst system for selective alkylation of toluene with propylene, containing metallic sodium which has been thermally decomposed from a compound containing sodium, onto the surface of solid K 2 CO 3 , wherein the compound containing sodium is thermally decomposed onto the surface of the solid K 2 CO 3 , and the compound containing sodium is sodium azide (NaN 3 ).
Claim 3
Dependent Claim
66 words
Procedure for preparing a catalyst system for selective alkylation of toluene with propylene, containing metallic sodium which has been thermally decomposed from a compound containing sodium, onto the surface of solid K 2 CO 3 , wherein the compound containing sodium is thermally decomposed onto the surface of the solid K 2 CO 3 , and the compound containing sodium is sodium oxide (Na 2 O).
Claim 4
Dependent Claim
66 words
Procedure for preparing a catalyst system for selective alkylation of toluene with propylene, containing metallic sodium which has been thermally decomposed from a compound containing sodium, onto the surface of solid K 2 CO 3 , wherein the compound containing sodium is thermally decomposed onto the surface of the solid K 2 CO 3 , and the compound containing sodium is sodium oxide (Na 2 O).
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) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |