US2969341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizable butyl rubber-gr-s blends and process of making same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-12-14
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Granted: 1961-01-24
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Expires: 1974-12-14
Abstract
No abstract record available.
Inventors
- 👤 Donald J Buckley
- 👤 Samuel B Robison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:39
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; C08L9/00; C08L9/06; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/16; C08K5/32; C08K5/33; C08K5/36; C08K5/45; C08K5/46; C08K5/47; C08L7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A SULFUR-FREE COMPOSITION OF MATTER COMPRISING A VULCANIZABLE BLEND OF ABOUT 25 TO 75 WEIGHT PERCENT OF BUTYL RUBBER COPOLYMER OF A MAJOR PROPORTION OF ISOBUTYLENE AND A MINOR PROPORTION OF A C4 TO C14 DIOLEFIN, ABOUT 25 TO 75 WEIGHT PERCENT OF A RUBBERY COPOLYMER OF BUTADIENE AND STYRENE, ABOUT 1 TO 10 WEIGHT PERCENT OF A CURING AGENT SELECTED FROM THE GROUP CONSISTING OF PARAQUINONE DIOXIME AND PARAQUINONE DIOXIME DIBENZOATE AND ABOUT 1 TO 20 WEIGHT PERCENT OF AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF LEAD OXIDE AND BENZOTHIAZYL DISULFIDE; SAID COMPOSITION BEING FREE OF ELEMENTAL SULFUR AND BEING COVULCANIZABLE UPON HEATING.
Claim 2
Dependent Claim
106 words
A SULFUR-FREE COMPOSITION OF MATTER COMPRISING A VULCANIZABLE BLEND OF ABOUT 25 TO 75 WEIGHT PERCENT OF BUTYL RUBBER COPOLYMER OF A MAJOR PROPORTION OF ISOBUTYLENE AND A MINOR PROPORTION OF A C4 TO C14 DIOLEFIN, ABOUT 25 TO 75 WEIGHT PERCENT OF A RUBBERY COPOLYMER OF BUTADIENE AND STYRENE, ABOUT 1 TO 10 WEIGHT PERCENT OF A CURING AGENT SELECTED FROM THE GROUP CONSISTING OF PARAQUINONE DIOXIME AND PARAQUINONE DIOXIME DIBENZOATE AND ABOUT 1 TO 20 WEIGHT PERCENT OF AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF LEAD OXIDE AND BENZOTHIAZYL DISULFIDE; SAID COMPOSITION BEING FREE OF ELEMENTAL SULFUR AND BEING COVULCANIZABLE UPON HEATING.
References Cited (Backward Citations)
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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) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |