Patent US3305608A successfully refreshed from Google Patents.
US3305608A
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US
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Phenolic phosphites
Assignee: GE Chemicals Inc
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Filing: 1962-10-08
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Granted: 1967-02-21
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Charles F Baranauckas
- 👤 Gordon Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:16
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/145; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
A PHENOLIC PHOSPHITE OBTAINED BY REACTING A TRIORGANOPHOSPHITE SELECTED FROM THE GROUP CONSISTING OF TRIARYL PHOSPHITE, TRIHALOARYL PHOSPHITE AND TRIALKYLARYL PHOSPHITE OF 18 TO 66 CARBON ATOMS AND TIALKYL PHOSPHITE OF 3 TO 48 CARBON ATOMS, A POLYOL SELECTED FROM THE GROUP CONSISTING OF HYDROXY COMPOUNDS OF 2 TO 18 CARBON ATOMS AND HAVING AT LEST 2 HYDROXY GROUPS AND A PHENOLIC COMPOUND HAVING BETWEEN TWO AND THREE PHENOLIC HYDROXYL GROUPS AT A TEMPERATURE BETWEEN 60* AND 180*C., SAID REACTANTS BEING PRESENT IN A REACTION ZONE IN PROPORTIONS OF FORM EIGHT TO TWELVE MOLES TRIORGANO PHOSPHITE, FOUR TOSIX MOLES POLYOL, AND ONE AND A HALF TO FOUR MOLES PHENOLIC COMPOUND, WITH THE RATIO OF POLYOL TO PHENOLIC COMPOUND BEING FROM 1.5:1 TO 2.5:1; STRIPPING OFF THE BY-PRODUCTS FORMED BY SAID REACTANTS AND RECOVERING THE PHENOLIC PHOSPHITE.
Claim 2
Dependent Claim
136 words
A PHENOLIC PHOSPHITE OBTAINED BY REACTING A TRIORGANOPHOSPHITE SELECTED FROM THE GROUP CONSISTING OF TRIARYL PHOSPHITE, TRIHALOARYL PHOSPHITE AND TRIALKYLARYL PHOSPHITE OF 18 TO 66 CARBON ATOMS AND TIALKYL PHOSPHITE OF 3 TO 48 CARBON ATOMS, A POLYOL SELECTED FROM THE GROUP CONSISTING OF HYDROXY COMPOUNDS OF 2 TO 18 CARBON ATOMS AND HAVING AT LEST 2 HYDROXY GROUPS AND A PHENOLIC COMPOUND HAVING BETWEEN TWO AND THREE PHENOLIC HYDROXYL GROUPS AT A TEMPERATURE BETWEEN 60* AND 180*C., SAID REACTANTS BEING PRESENT IN A REACTION ZONE IN PROPORTIONS OF FORM EIGHT TO TWELVE MOLES TRIORGANO PHOSPHITE, FOUR TOSIX MOLES POLYOL, AND ONE AND A HALF TO FOUR MOLES PHENOLIC COMPOUND, WITH THE RATIO OF POLYOL TO PHENOLIC COMPOUND BEING FROM 1.5:1 TO 2.5:1; STRIPPING OFF THE BY-PRODUCTS FORMED BY SAID REACTANTS AND RECOVERING THE PHENOLIC PHOSPHITE.
Claim 3
Dependent Claim
20 words
THE PRODUCT OF CLAIM 1 WHEREIN THE TRIOGRANOPHOSPHITE, POLYOL AND PHENOLIC COMPOUND ARE RESPECTIVELY, TRIPHENYL PHOSPHITE, PENTAERYTHRITOL, AND 4,4''-DIHYDROXYDIPHENYL SULFIDE.
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |