Patent US2872437A successfully refreshed from Google Patents.
US2872437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of oil-soluble sulfonates
Assignee: Honeywell International Inc
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Filing: 1955-06-22
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Granted: 1959-02-03
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Expires: 1975-06-22
Abstract
No abstract record available.
Inventors
- 👤 Everett E Gilbert
- 👤 Veldhuis Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:27
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C08F8/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE PROCESS OF PREPARING OIL-SOLUBLE SULFONATES WHICH COMPRISES REACTING A SYNTHETIC PETROLEUM RESIN HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 800, SAID RESIN BEING FORMED BY ALUMINUM CHLORIDE CATALYZED POLYMERIZATION OF A HIGHLY UNSATURATED LIQUID FRACTION OBTAINED BY CRACKING ALIQUID PETROLEUM OIL AND FRACTIONATING THE CRACKED PRODUCT, SAID FRACTION BEING COMPOSED ESSENTIALLY OF C5, C6 AND C7 HYDROCARBONS COMPRISING AROMATIC HYDROCARBONS, OLEFINIC HYDROCARBONS AND CONJUGATED DIENE HYDROCARBONS, THE CONJUGATED DIENE HYDROCARBONS COMPRISING AT LEAST ABOUT 15% BY WEIGHT OF THE FRACTION, WITH A SULFONATING AGENT, IN MOL RATIO OF ABOUT 0.75 TO 2.5 MOLS OF SULFONATING AGENT PER MOL OF RESIN, AT TEMPERATURE OF ABOUT 10* TO 80*C. FOR A TIME SUFFICIENT TO COMPLETE THE REACTION.
Claim 2
Dependent Claim
117 words
THE PROCESS OF PREPARING OIL-SOLUBLE SULFONATES WHICH COMPRISES REACTING A SYNTHETIC PETROLEUM RESIN HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 800, SAID RESIN BEING FORMED BY ALUMINUM CHLORIDE CATALYZED POLYMERIZATION OF A HIGHLY UNSATURATED LIQUID FRACTION OBTAINED BY CRACKING ALIQUID PETROLEUM OIL AND FRACTIONATING THE CRACKED PRODUCT, SAID FRACTION BEING COMPOSED ESSENTIALLY OF C5, C6 AND C7 HYDROCARBONS COMPRISING AROMATIC HYDROCARBONS, OLEFINIC HYDROCARBONS AND CONJUGATED DIENE HYDROCARBONS, THE CONJUGATED DIENE HYDROCARBONS COMPRISING AT LEAST ABOUT 15% BY WEIGHT OF THE FRACTION, WITH A SULFONATING AGENT, IN MOL RATIO OF ABOUT 0.75 TO 2.5 MOLS OF SULFONATING AGENT PER MOL OF RESIN, AT TEMPERATURE OF ABOUT 10* TO 80*C. FOR A TIME SUFFICIENT TO COMPLETE THE REACTION.
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) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |