US2977345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerator system for steam curing polymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-01-02
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Granted: 1961-03-28
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Expires: 1978-01-02
Abstract
No abstract record available.
Inventors
- 👤 Fischer Wilbur Frank
- 👤 Neu Robert Frederick
- 👤 Robert L Zapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A COMPOSITION OF MATTER HAVING GOOD OZONE RESISTANCE COMPRISING, 100 PARTS BY WEIGHT OF A BUTYL RUBBER COPOLYMER OF 85 TO 99.5 WT PERCENT OF A C4 TO C7 ISOOLEFIN AND 0.5 TO 15 WT. PERCENT OF A C4 TO C10 MULTIOLEFIN, CURED WITH SULFUR IN THE PRESENCE OF ABOUT 0.5 TO 10 PARTS BY WEIGHT OF A COMBINATION OF ACCELERATORS, SAID COMBINATION OF ACCELERATORS CONSISTING ESSENTIALLY OF TELLURIUM ETHYL BENZYL DITHIOCARBAMATE AND BENZOTHIAZYL DISULFIDE, SAID COMBINATION OF ACCELERATORS CONTAINING ABOUT 0.3 TO 2.5 PARTS BY WEIGHT OF BENZOTHIAZYL DISULFIDE PER PART BY WEIGHT OF TELLURIUM ETHYL BENZYL DITHIOCARBAMATE.
Claim 2
Dependent Claim
99 words
A COMPOSITION OF MATTER HAVING GOOD OZONE RESISTANCE COMPRISING, 100 PARTS BY WEIGHT OF A BUTYL RUBBER COPOLYMER OF 85 TO 99.5 WT PERCENT OF A C4 TO C7 ISOOLEFIN AND 0.5 TO 15 WT. PERCENT OF A C4 TO C10 MULTIOLEFIN, CURED WITH SULFUR IN THE PRESENCE OF ABOUT 0.5 TO 10 PARTS BY WEIGHT OF A COMBINATION OF ACCELERATORS, SAID COMBINATION OF ACCELERATORS CONSISTING ESSENTIALLY OF TELLURIUM ETHYL BENZYL DITHIOCARBAMATE AND BENZOTHIAZYL DISULFIDE, SAID COMBINATION OF ACCELERATORS CONTAINING ABOUT 0.3 TO 2.5 PARTS BY WEIGHT OF BENZOTHIAZYL DISULFIDE PER PART BY WEIGHT OF TELLURIUM ETHYL BENZYL DITHIOCARBAMATE.
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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |