Patent US2868859A successfully refreshed from Google Patents.
US2868859A
Expired / Lapsed
US
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Curing natural rubber latex with a peroxide
Assignee: Individual
•
Filing: 1954-06-09
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Granted: 1959-01-13
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Expires: 1974-06-09
Abstract
No abstract record available.
Inventors
- 👤 Stott Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE PROCESS OF VULCANIZING AN AQUEOUS DISPERSION OF NATURAL RUBBER COMPRISING THE STEPS OF REACTING SAID DISPERSION WITH DITERTIARY BUTYL PEROXIDE UNDER SUPERATMOSPHERIC PRESSURE AT A TEMPERATURE RANGE BETWEEN 140*C. TO 170*C. FOR A PERIOD EXTENDING BETWEEN TWO TO THIRTY MINUTES, WHEREBY CROSS-LINKING OCCURS BETWEEN THE RUBBER MOLECULES OF SAID DISPERION, SAID DITERTIARY BUTYL PEROXIDE BEING EMPLOYED WITHIN THE RANGE OF 1% TO 5% BASED ON THE WEIGHT OF THE TOTAL SOLIDS OF SAID RUBBER DISPERSION.
Claim 2
Dependent Claim
76 words
THE PROCESS OF VULCANIZING AN AQUEOUS DISPERSION OF NATURAL RUBBER COMPRISING THE STEPS OF REACTING SAID DISPERSION WITH DITERTIARY BUTYL PEROXIDE UNDER SUPERATMOSPHERIC PRESSURE AT A TEMPERATURE RANGE BETWEEN 140*C. TO 170*C. FOR A PERIOD EXTENDING BETWEEN TWO TO THIRTY MINUTES, WHEREBY CROSS-LINKING OCCURS BETWEEN THE RUBBER MOLECULES OF SAID DISPERION, SAID DITERTIARY BUTYL PEROXIDE BEING EMPLOYED WITHIN THE RANGE OF 1% TO 5% BASED ON THE WEIGHT OF THE TOTAL SOLIDS OF SAID RUBBER DISPERSION.
References Cited (Backward Citations)
US2265324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |