US3080338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diene rubbers stabilized with organic phosphites and phenols
Assignee: Texas US Chemical Co
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Filing: 1960-06-15
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Granted: 1963-03-05
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Expires: 1980-06-15
Abstract
No abstract record available.
Inventors
- 👤 Nudenberg Walter
- 👤 Dudley B Merrifield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/04; C08K5/13; C08K5/526
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
AN UNVULCANIZED RUBBERY POLYMER SELECTED FROM THE GROUP CONSITING OF A HOMOPOLYMER OF A CONJUGATED 1,3DIENE AND A COPOLYMER OF SAID DIENE WITH UP TO 50% BY WEIGHT OF A COPOLYMERIZABLE MONOMER, PROTECTED AGAINST DETERIORATION BY LIGHT, HEAT AND AIR BY AN ORGANIC PHOSPHITE STABILIZER SELECTED FROM CONSISTING OF ARYL PHOSPHITES AND ALKYLARYL PHOSPHITES AND A PHENOLIC ANTIOXIDANT SELECTED FROM THE GROUP CONSISTING OF ARYLSUBSTITUTED PHENOLS, ARALKYL-SUBSTITUTED PHENOLS, ALKYLENE BIS (POLYALKYL PHENOLS), THIO BIS(POLYAKYL PHENOLS), POLYALKYL-SUBSTITUTED PHENOLS, AND ARYL ETHERS OF HYDROQUINONE, THE SAID ORGANIC PHOSPHITE STABILIZER PLUS PHENOLIC ANTIOXIDANT AMOUNTING TO FROM 0.5 TO 4 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID POLYMER, AND THE SAID PHENOLIC ANTIOXIDANT BEING PRESENT IN AMOUNT OF FROM 0.0163 TO 0.19 PART BY WEIGHT PER ONE STABILIZER, THE SAID RUBBERY POLYMER BEING THE SOLE POLYMER PRESENT, AND BEING IN A DRY, SOLID STATE.
Claim 2
Dependent Claim
143 words
AN UNVULCANIZED RUBBERY POLYMER SELECTED FROM THE GROUP CONSITING OF A HOMOPOLYMER OF A CONJUGATED 1,3DIENE AND A COPOLYMER OF SAID DIENE WITH UP TO 50% BY WEIGHT OF A COPOLYMERIZABLE MONOMER, PROTECTED AGAINST DETERIORATION BY LIGHT, HEAT AND AIR BY AN ORGANIC PHOSPHITE STABILIZER SELECTED FROM CONSISTING OF ARYL PHOSPHITES AND ALKYLARYL PHOSPHITES AND A PHENOLIC ANTIOXIDANT SELECTED FROM THE GROUP CONSISTING OF ARYLSUBSTITUTED PHENOLS, ARALKYL-SUBSTITUTED PHENOLS, ALKYLENE BIS (POLYALKYL PHENOLS), THIO BIS(POLYAKYL PHENOLS), POLYALKYL-SUBSTITUTED PHENOLS, AND ARYL ETHERS OF HYDROQUINONE, THE SAID ORGANIC PHOSPHITE STABILIZER PLUS PHENOLIC ANTIOXIDANT AMOUNTING TO FROM 0.5 TO 4 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID POLYMER, AND THE SAID PHENOLIC ANTIOXIDANT BEING PRESENT IN AMOUNT OF FROM 0.0163 TO 0.19 PART BY WEIGHT PER ONE STABILIZER, THE SAID RUBBERY POLYMER BEING THE SOLE POLYMER PRESENT, AND BEING IN A DRY, SOLID STATE.
References Cited (Backward Citations)
US2726226A
Cited
US2889295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |