Patent US2974113A successfully refreshed from Google Patents.
US2974113A
Expired / Lapsed
US
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Method for improving the ozone resistance of steam cured butyl rubber
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-10-09
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Granted: 1961-03-07
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Expires: 1977-10-09
Abstract
No abstract record available.
Inventors
- 👤 Walter L Dunkel
- 👤 Robert F Neu
- 👤 Richard R Phelan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROCESS WHICH COMPRISES PREPARING A RUBBERY POLYMER OF 70 TO 99.5 PARTS OF AN ISOOLEFIN WITH 30 TO 0.5 PARTS OF A MULTIOLEFIN; COMPOUNDING SAID RUBBERY POLYMER WITH 0 TO 50% OF A PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF OILS, PETROLATUM, AND WAX; 0 TO 500% OF A FILLING AGENT SELECTED FROM THE GROUP CONSISTING OF CARBON BLACK, AND PIGMENTS; SMALL AMOUNTS OF ANTI-OXIDANTS, AND ANTI-OZONANTS; AND AN ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF TETRAMETHYL THIURAM DISULFIDE, TELLURIUM DIETHYL DITHIOCARBAMATE, ZINC DIBENZYL DITHIOCARBAMATE, SULFUR, AND MIXTURES THEREOF; PASSING SAID COMPOUNDED POLYMER CONTINUOUSLY THROUGH AN AQUEOUS SLURRY CONTAINING 5 TO 50% BY WEIGHT OF AN ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF TETRAMETHYL THIURAM DISULFIDE, TELLURIUM DIETHYL DITHIOCARBAMATE, ZINC DIBENZYL DITHIOCARBAMATE AND MIXTURES THEREOF; SUBSEQUENTLY CURING SAID COMPOUNDED POLYMER WITH SAID SLURRY ON ITS SURFACE AT A TEMPERATURE BETWEEN 100 AND 400*F. TO PROVIDE A VULCANIZATE THEREFROM WITH INCREASED OZONE RESISTANCE.
Claim 2
Dependent Claim
153 words
A PROCESS WHICH COMPRISES PREPARING A RUBBERY POLYMER OF 70 TO 99.5 PARTS OF AN ISOOLEFIN WITH 30 TO 0.5 PARTS OF A MULTIOLEFIN; COMPOUNDING SAID RUBBERY POLYMER WITH 0 TO 50% OF A PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF OILS, PETROLATUM, AND WAX; 0 TO 500% OF A FILLING AGENT SELECTED FROM THE GROUP CONSISTING OF CARBON BLACK, AND PIGMENTS; SMALL AMOUNTS OF ANTI-OXIDANTS, AND ANTI-OZONANTS; AND AN ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF TETRAMETHYL THIURAM DISULFIDE, TELLURIUM DIETHYL DITHIOCARBAMATE, ZINC DIBENZYL DITHIOCARBAMATE, SULFUR, AND MIXTURES THEREOF; PASSING SAID COMPOUNDED POLYMER CONTINUOUSLY THROUGH AN AQUEOUS SLURRY CONTAINING 5 TO 50% BY WEIGHT OF AN ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF TETRAMETHYL THIURAM DISULFIDE, TELLURIUM DIETHYL DITHIOCARBAMATE, ZINC DIBENZYL DITHIOCARBAMATE AND MIXTURES THEREOF; SUBSEQUENTLY CURING SAID COMPOUNDED POLYMER WITH SAID SLURRY ON ITS SURFACE AT A TEMPERATURE BETWEEN 100 AND 400*F. TO PROVIDE A VULCANIZATE THEREFROM WITH INCREASED OZONE RESISTANCE.
References Cited (Backward Citations)
US2006184A
Cited
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 |