US2933464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pelletized acceleration containing polyisobutylene
Assignee: Vanderbilt Chemicals LLC
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Filing: 1954-11-23
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Granted: 1960-04-19
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Expires: 1974-11-23
Abstract
No abstract record available.
Inventors
- 👤 Gibbs Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:24
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08J2321/00; C08J2423/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AS A NEW PRODUCT, FREE-FLOWING PELLETS OF UNIFORM COMPOSITION COMPOSED OF AGGREGATES OF A POWDERED RUBBER VULCANIZATION ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF BENZOTHIAZOLES, THIURAMS AND DITHIOCARBAMATES, FROM 4 TO 10 PERCENT BY WEIGHT OF A SATURATED, NON-VULCANIZABLE, ELASTOMERIC POLYISOBUTYLENE HAVING AN AVERAGE MOLECULAR WEIGHT WITHIN THE RANGE FROM 100,000 TO 200,000 AND FROM 2 TO 6 PERCENT BY WEIGHT OF A FATTY ACID CONTAINING FROM 12 TO 18 CARBON ATOMS, THE PERCENTAGES BEING BASED UPON THE WEIGHT OF THE ACCELERATOR.
Claim 2
Dependent Claim
82 words
AS A NEW PRODUCT, FREE-FLOWING PELLETS OF UNIFORM COMPOSITION COMPOSED OF AGGREGATES OF A POWDERED RUBBER VULCANIZATION ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF BENZOTHIAZOLES, THIURAMS AND DITHIOCARBAMATES, FROM 4 TO 10 PERCENT BY WEIGHT OF A SATURATED, NON-VULCANIZABLE, ELASTOMERIC POLYISOBUTYLENE HAVING AN AVERAGE MOLECULAR WEIGHT WITHIN THE RANGE FROM 100,000 TO 200,000 AND FROM 2 TO 6 PERCENT BY WEIGHT OF A FATTY ACID CONTAINING FROM 12 TO 18 CARBON ATOMS, THE PERCENTAGES BEING BASED UPON THE WEIGHT OF THE ACCELERATOR.
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |