US3068269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing trialkyl phosphites
Assignee: Shell USA Inc
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Filing: 1961-01-31
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Granted: 1962-12-11
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Expires: 1981-01-31
Abstract
No abstract record available.
Inventors
- 👤 Streich John
- 👤 William E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:12
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A PROCESS FOR THE PREPARATION OF A TRIALKYL PHOSPHITE WHEREIN AN ALKANOL IS REACTED WITH A PHOSPHOROUS TRIHALIDE, OF THE GROUP CONSISTING OF PHOSPHOROUS TRICHLORIDE AND PHOSPHOROUS TRIBROMIDE, IN THE PRESENCE OF A TERTIARY AMINE AS HYDROGEN HALIDE ACCEPTOR, THE IMPROVEMENT WHICH CONSISTS OF USING TRIALLYLAMINE AS THE HYDROGEN HALIDE ACCEPTOR, CONDUCTING THE REACTION AT A TEMPERATURE AT WHICH THE TRIALLYAMINE HYDROHALIDE IS LIQUID, AND RECOVERING TRIALKYL PHOSPHITE PRODUCT IN VAPOR PHASE FROM THE RESULTING REACTION MIXTURE.
Claim 2
Dependent Claim
78 words
IN A PROCESS FOR THE PREPARATION OF A TRIALKYL PHOSPHITE WHEREIN AN ALKANOL IS REACTED WITH A PHOSPHOROUS TRIHALIDE, OF THE GROUP CONSISTING OF PHOSPHOROUS TRICHLORIDE AND PHOSPHOROUS TRIBROMIDE, IN THE PRESENCE OF A TERTIARY AMINE AS HYDROGEN HALIDE ACCEPTOR, THE IMPROVEMENT WHICH CONSISTS OF USING TRIALLYLAMINE AS THE HYDROGEN HALIDE ACCEPTOR, CONDUCTING THE REACTION AT A TEMPERATURE AT WHICH THE TRIALLYAMINE HYDROHALIDE IS LIQUID, AND RECOVERING TRIALKYL PHOSPHITE PRODUCT IN VAPOR PHASE FROM THE RESULTING REACTION MIXTURE.
References Cited (Backward Citations)
CA573117A
Cited
US2905705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |