US3201438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a monoester of a hydrocarbyl thiophosphonic acid and a polyalkylene glycol
Assignee: Texaco Inc
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Filing: 1962-08-09
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Granted: 1965-08-17
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Expires: 1982-08-09
Abstract
No abstract record available.
Inventors
- 👤 David D Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:14
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4071; C07F9/4075; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2219/00; C10M2219/06; C10M2219/062; C10M2221/00; C10M2221/02; C10M2221/04; C10M2221/043; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/06; C10M2223/065; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
13 words
A PROCESS FOR PREPARING A POLYGLYCOL HYDROCARBYL THIOPHOSPHONIC ACID ESTER OF THE FORMULA:
Claim 2
Dependent Claim
13 words
A PROCESS FOR PREPARING A POLYGLYCOL HYDROCARBYL THIOPHOSPHONIC ACID ESTER OF THE FORMULA:
Claim 3
Dependent Claim
103 words
A PROCESS FOR PREPARING A POLYGLYCOL HYDROCARBON THIOPHOSPHONIC ACID ESTER COMPRISING: (A) REACTING P2S5 WITH AN ALIPHATIC POLYOLEFIN HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 250 AND 50,000 AT A TEMPERATURE BETWEEN ABOUT 100 AND 320*C. IN A NON-OXIDIZING ATMOSPHERE, THE P2S5 CONSTITUTING BETWEEN ABOUT 5 AND 40 WT. PERCENT OF THE REACTION MASS, (B) CONTAINING THE RESULTING P2S5-POLYOLEFIN HYDROCARBON REACTION MASS WITH STEAM AT A TEMPERATURE BETWEEN ABOUT 100 AND 250*C. AND REMOVING FORMED INORGANIC PHOSPHORUS ACIDS FROM THE STEAM TREATED REACTION MIXTURE, (C) CONTACTING THE RESULTANT INORGANIC PHOSPHORUS ACIDS REMOVED, STEAM TREATED REACTION MIXTURE WITH AN ALKYLENE OXIDE OF THE FORMULA:
Claim 4
Dependent Claim
103 words
A PROCESS FOR PREPARING A POLYGLYCOL HYDROCARBON THIOPHOSPHONIC ACID ESTER COMPRISING: (A) REACTING P2S5 WITH AN ALIPHATIC POLYOLEFIN HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 250 AND 50,000 AT A TEMPERATURE BETWEEN ABOUT 100 AND 320*C. IN A NON-OXIDIZING ATMOSPHERE, THE P2S5 CONSTITUTING BETWEEN ABOUT 5 AND 40 WT. PERCENT OF THE REACTION MASS, (B) CONTAINING THE RESULTING P2S5-POLYOLEFIN HYDROCARBON REACTION MASS WITH STEAM AT A TEMPERATURE BETWEEN ABOUT 100 AND 250*C. AND REMOVING FORMED INORGANIC PHOSPHORUS ACIDS FROM THE STEAM TREATED REACTION MIXTURE, (C) CONTACTING THE RESULTANT INORGANIC PHOSPHORUS ACIDS REMOVED, STEAM TREATED REACTION MIXTURE WITH AN ALKYLENE OXIDE OF THE FORMULA:
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |