Patent US2166254A successfully refreshed from Google Patents.
Patent US2852551A successfully refreshed from Google Patents.
US2852551A
Expired / Lapsed
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Preparation of trialkenyl phosphites
Assignee: Shea Chemical Corp
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Filing: 1956-10-18
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Granted: 1958-09-16
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Expires: 1976-10-18
Abstract
No abstract record available.
Inventors
- 👤 Hechenbleikner Ingenuin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:06
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS OF PREPARING A TRIALKENYL PHOSPHITE SELECTED FROM THE GROUP CONSISTING OF TRIALLYL PHOSPHITE AND TRIMETHALLYL PHOSPHITE COMPRISING RRANSESTERIFYING AN AROMATIC PHOSPHITE SELECTED FROM THE GROUP CONSISTING OF TRIATYL PHOSPHITES WHEREIN THE ARYL GROUP IS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND LOWER ALKYL SUBSTITUTED PHENYL AND TRIHALOPHENYL PHOSPHITES WITH AT LEAST 4.5 MOLS OF AN ALKENOL SELECTED FROM THE GROUP CONSISTING OF ALLYL ALCOHOL AND METHALLYL ALCOHOL FOR EACH MOL OF THE AROMATIC PHOSPHITE IN THE PRESENCE OF SUFFICIENT ALKALI METAL HYDROXIDE TO NEUTRALIZE THE PHENOL FORMED IN THE REACTION.
Claim 2
Dependent Claim
93 words
A PROCESS OF PREPARING A TRIALKENYL PHOSPHITE SELECTED FROM THE GROUP CONSISTING OF TRIALLYL PHOSPHITE AND TRIMETHALLYL PHOSPHITE COMPRISING RRANSESTERIFYING AN AROMATIC PHOSPHITE SELECTED FROM THE GROUP CONSISTING OF TRIATYL PHOSPHITES WHEREIN THE ARYL GROUP IS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND LOWER ALKYL SUBSTITUTED PHENYL AND TRIHALOPHENYL PHOSPHITES WITH AT LEAST 4.5 MOLS OF AN ALKENOL SELECTED FROM THE GROUP CONSISTING OF ALLYL ALCOHOL AND METHALLYL ALCOHOL FOR EACH MOL OF THE AROMATIC PHOSPHITE IN THE PRESENCE OF SUFFICIENT ALKALI METAL HYDROXIDE TO NEUTRALIZE THE PHENOL FORMED IN THE REACTION.
References Cited (Backward Citations)
US2353558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |