Patent US3309431A successfully refreshed from Google Patents.
US3309431A
Expired / Lapsed
US
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Method for the preparation of tritertiary alkyl phosphites
Assignee: Monsanto Co
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Filing: 1963-02-21
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Granted: 1967-03-14
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Expires: 1983-02-21
Abstract
No abstract record available.
Inventors
- 👤 Mark Victor
- 👤 Reetz Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:15
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
95 words
METHOD FOR THE PREPARATION OF TRI-TERTIARY ALKYL PHOSPHITES HAVING FROM 4 TO 20 CARBON ATOMS IN EACH ALKYL RADICAL, WHICH COMPRISES MIXING AND CONTACTING PHOSPHORUS TRICHLORIDE IN THE PROPORTION OF ONE MOLE THEREOF WITH AT LEAST THREE MOLAR PROPORTIONS OF TERTIARY ALCOHOL HAVING FROM 4 TO 20 CARBON ATOMS IN THE PRESENCE OF AT LEAST A SIMILAR MOLAR PROPORTION OF AN ACID ACCEPTOR SELECTED FROM THE GROUP CONSISTING OF TERTIARY SATURATED ALIPHATIC AMINES HAVING FROM 3 TO 20 CARBON ATOMS, THE SAID MIXING AND CONTACTING BEING CONCLUDED AT A TEMPERATURE OF FROM 20*C. TO 50*C.
Claim 2
Dependent Claim
95 words
METHOD FOR THE PREPARATION OF TRI-TERTIARY ALKYL PHOSPHITES HAVING FROM 4 TO 20 CARBON ATOMS IN EACH ALKYL RADICAL, WHICH COMPRISES MIXING AND CONTACTING PHOSPHORUS TRICHLORIDE IN THE PROPORTION OF ONE MOLE THEREOF WITH AT LEAST THREE MOLAR PROPORTIONS OF TERTIARY ALCOHOL HAVING FROM 4 TO 20 CARBON ATOMS IN THE PRESENCE OF AT LEAST A SIMILAR MOLAR PROPORTION OF AN ACID ACCEPTOR SELECTED FROM THE GROUP CONSISTING OF TERTIARY SATURATED ALIPHATIC AMINES HAVING FROM 3 TO 20 CARBON ATOMS, THE SAID MIXING AND CONTACTING BEING CONCLUDED AT A TEMPERATURE OF FROM 20*C. TO 50*C.
References Cited (Backward Citations)
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |