US3085990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treating rubbers with dinitrosoresorcinol
Assignee: Monsanto Chemicals Ltd
•
Filing: 1961-01-24
•
Granted: 1963-04-16
•
Expires: 1981-01-24
Abstract
No abstract record available.
Inventors
- 👤 Ching C Tung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
THE PROCESS WHICH COMPRISES HEATING AND MASTICATING WITHIN THE RANGE OF 300-370*F. FOR A TIME WITHIN THE RANGE OF ONE TO TEN MINUTES A VULCANIZABLE ELASTOMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, SYNTHETIC RUBBERY HOMOPOLYMERS OF ALIPHATIC CONJUGATED DIOLEFIN HYDROCARBONS, SYNTHETIC RUBBERY COPOLYMERS CONTAINING AT LEAST 50% OF AN ALIPHATIC CONJUGATED DIOLEFIN HYDROCARBON COPOLYMERIZED WITH CORRESPONDINGLY NOT MORE THAN 50% OF A COPOLYMERIZABLE MONOETHYLENICALLY UNSATURATED COMPOUND AND BUTYL RUBBER WHICH IS A COPOLYMER OF AT LEAST 85% ISOBUTYLENE AND A SMALL AMOUNT, NOT MORE THAN 15%, OF DIOLEFIN, SAID RUBBER HAVING INCORPORATED THEREIN CARBON BLACK WITHIN THE RANGE OF 25 TO 100% OF THE RUBBER AND 2,4-DINITROSORESORCINOL WITHIN THE RANGE OF 0.1-5.0% OF THE RUBBER, ANY VULCANIZING INGREDIENTS, IF PRESENT, BEING PRESENT IN AMOUNTS INSUFFICIENT TO CAUSE VULCANIZATION.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |