US3238249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylbenzene sulfonate production via n-olefin dimerization
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1960-09-23
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Granted: 1966-03-01
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Expires: 1980-09-23
Abstract
No abstract record available.
Inventors
- 👤 Stanley B Mirviss
- 👤 James H Mcateer
- 👤 Joseph F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:54
CPC Classifications
C; C07; C07C; C07C309/00; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C309/01; C07C309/28; C07C309/29; C07C309/30; C07C309/31; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/126; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR PREPARING BIODEGRADABLE ALKYLBENZENE DETERGENTS WHICH COMPRISES SELECTING A C5 TO C6 PREDOMINANTLY STRAIGHT CHAIN ALPHA OLEFINSTREAM CONTAINING ON THE NON-ETHYLENIC CARBON ATOMS, ON THE AVERAGE LESS THAN 0.5 METHYL GROUPS IN SIDE CHAINS, DIMERIZING THE PREDOMINANTLY STRAIGHT CHAINALPHA C5 TO C6 OLEFINS IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF AN ALUMINA ALKYL AT TEMPERATURES IN THE RANGE OF 80 TO 300*C., PRESSURES IN THE RANGE OF ATMOSPHERIC PRESSURE TO 200 ATMOSPHERES AND FOR REACTION TIMES IN THE RANGE OF 0.5 TO 25 HOURS, SEPARATING OLEFIN DIMER FROM THE REACTION MIXTURE, REACTING BENZENE WITH THE RESULTANT OLEFIN DIMER UNDER ACTIVE ALKYLATING CONDITIONS TO PRODUCE ALKYLBENZENE AT LEAST 75% OF WHICH HAVING THE STRUCTURE
Claim 2
Dependent Claim
117 words
A PROCESS FOR PREPARING BIODEGRADABLE ALKYLBENZENE DETERGENTS WHICH COMPRISES SELECTING A C5 TO C6 PREDOMINANTLY STRAIGHT CHAIN ALPHA OLEFINSTREAM CONTAINING ON THE NON-ETHYLENIC CARBON ATOMS, ON THE AVERAGE LESS THAN 0.5 METHYL GROUPS IN SIDE CHAINS, DIMERIZING THE PREDOMINANTLY STRAIGHT CHAINALPHA C5 TO C6 OLEFINS IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF AN ALUMINA ALKYL AT TEMPERATURES IN THE RANGE OF 80 TO 300*C., PRESSURES IN THE RANGE OF ATMOSPHERIC PRESSURE TO 200 ATMOSPHERES AND FOR REACTION TIMES IN THE RANGE OF 0.5 TO 25 HOURS, SEPARATING OLEFIN DIMER FROM THE REACTION MIXTURE, REACTING BENZENE WITH THE RESULTANT OLEFIN DIMER UNDER ACTIVE ALKYLATING CONDITIONS TO PRODUCE ALKYLBENZENE AT LEAST 75% OF WHICH HAVING THE STRUCTURE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |