Patent US2974117A successfully refreshed from Google Patents.
US2974117A
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Vulcanizable composition comprising butyl rubber, an alkali metal silicoaluminate and a sulfur compound, and process for vulcanizing same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-01-10
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Granted: 1961-03-07
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Expires: 1977-01-10
Abstract
No abstract record available.
Inventors
- 👤 Walter L Dunkel
- 👤 John L Ernst
- 👤 James F Wernersbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:28
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/39; C08K5/40; C08K3/00; C08K3/34; C08K5/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A NON-CORROSIVE, COMPLETELY VULCANIZABLE COMPOSITION COMPRISING 100 PARTS BY WEIGHT OF A RUBBER COPOLYMER OF ABOUT 85 TO 99.5 WEIGHT PERCENT OF A C4 TO C8 ISOOLEFIN AND ABOUT 0.5 TO 15 WEIGHT PERCENT OF A C4 TO C14 MULTIOLEFIN, ABOUT 20 TO 80 PARTS BY WEIGHT OF A SYNTHETIC PRECIPITATED HYDRATED ALKALI METAL SILICO-ALUMINATE HAVING A PH BETWEEN ABOUT 9 TO 12, AND ABOUT 0.5 TO 15 PARTS BY WEIGHT OF A SULFUR COMPOUND SELECTED FROM THE CLASS CONSISTING OF DIPENTAMETHYLENE THIURAM TETRASULFIDE AND N,N''-DITHIOMORPHOLINE, AND ABOUT 2 TO 30 PARTS PARTS BY WEIGHT OF SINC OXIDE, SAID COMPOSITION BEING FREE OF ADDED ELEMENTAL SULFUR.
Claim 2
Dependent Claim
106 words
A NON-CORROSIVE, COMPLETELY VULCANIZABLE COMPOSITION COMPRISING 100 PARTS BY WEIGHT OF A RUBBER COPOLYMER OF ABOUT 85 TO 99.5 WEIGHT PERCENT OF A C4 TO C8 ISOOLEFIN AND ABOUT 0.5 TO 15 WEIGHT PERCENT OF A C4 TO C14 MULTIOLEFIN, ABOUT 20 TO 80 PARTS BY WEIGHT OF A SYNTHETIC PRECIPITATED HYDRATED ALKALI METAL SILICO-ALUMINATE HAVING A PH BETWEEN ABOUT 9 TO 12, AND ABOUT 0.5 TO 15 PARTS BY WEIGHT OF A SULFUR COMPOUND SELECTED FROM THE CLASS CONSISTING OF DIPENTAMETHYLENE THIURAM TETRASULFIDE AND N,N''-DITHIOMORPHOLINE, AND ABOUT 2 TO 30 PARTS PARTS BY WEIGHT OF SINC OXIDE, SAID COMPOSITION BEING FREE OF ADDED ELEMENTAL SULFUR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |