US3303230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of alkylation catalyst activity
Assignee: Monsanto Co
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Filing: 1963-12-20
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Granted: 1967-02-07
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Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Talmage D Mcminn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:18
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2/70; C07C6/00; C07C6/08; C07C6/12; C07C6/126; B01J2231/00; B01J2231/40; B01J2231/42; B01J2231/4205; B01J31/26; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/125; C07C2527/126; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A PROCESS FOR THE PREPARTION OF MONOALKYLATED AROMATIC COMPOUNDS IN THE PRESENCE OF A LIQUID FRIEDELCRAFTS ORGANO-METAL HALIDE CATALYST COMPLEX TO PRODUCE BOTH MONO- AND POLYALKYLATED AROMATIC COMPOUNDS AND WHEREIN SAID POLYALKYLATED AROMATIC COMPOUNDS ARE DEALKYLATED IN THE PRESENCE OF SAID CATALYST COMPLEX, THE STEPS WHICH COMPRISE DETERMINING THE ACTIVITY OF SAID CATALYST COMPLEX BY MEASURING THE VISCOSITY OF SAID CATALYST COMPLEX AND CALCULATING THE SAID ACTIVITY THEREFROM AND MAINTAINING THE ACTIVITY OF SAID CATALYST COMPLEX AT A HIGH LEVEL BY THE ADDITION OF METAL HALIDE TO SAID CATALYST COMPLEX, AND CATALYST COMPLEX HAVING BEEN PREPARED BY REACTING METALLIC ALUMINUM AND HYDROGEN, CHLORIDE IN THE PRESENCE OF BENZENE, ETHYLBENZENE AND POLYETHLBENZENES.
Claim 2
Dependent Claim
112 words
IN A PROCESS FOR THE PREPARTION OF MONOALKYLATED AROMATIC COMPOUNDS IN THE PRESENCE OF A LIQUID FRIEDELCRAFTS ORGANO-METAL HALIDE CATALYST COMPLEX TO PRODUCE BOTH MONO- AND POLYALKYLATED AROMATIC COMPOUNDS AND WHEREIN SAID POLYALKYLATED AROMATIC COMPOUNDS ARE DEALKYLATED IN THE PRESENCE OF SAID CATALYST COMPLEX, THE STEPS WHICH COMPRISE DETERMINING THE ACTIVITY OF SAID CATALYST COMPLEX BY MEASURING THE VISCOSITY OF SAID CATALYST COMPLEX AND CALCULATING THE SAID ACTIVITY THEREFROM AND MAINTAINING THE ACTIVITY OF SAID CATALYST COMPLEX AT A HIGH LEVEL BY THE ADDITION OF METAL HALIDE TO SAID CATALYST COMPLEX, AND CATALYST COMPLEX HAVING BEEN PREPARED BY REACTING METALLIC ALUMINUM AND HYDROGEN, CHLORIDE IN THE PRESENCE OF BENZENE, ETHYLBENZENE AND POLYETHLBENZENES.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |