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US2941979A
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Vulcanization process
Assignee: Bayer AG
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Filing: 1957-02-06
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Granted: 1960-06-21
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Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Pohle Hans
- 👤 Lober Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
AN IMPROVED RUBBER VULCANIZATE SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND A SYNTHETIC RUBBERY COPOLYMER OF BUTADIENE AND STRYENE, SAID VULCANIZATE BEING INHIBITED AGAINST FLEX-CRACKING BY THE INCORPORATION THEREIN, PRIOR TO VULCANIZATION, OF 0.5-5% BY WEIGHT OF A MIXTURE CONSISTING ESSENTIALLY OF (1) 75-25 PARTS OF A P-PHENYLENE DIAMINE DERIVATIVE SUBSTITUTED AT THE NITROGEN BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ALKYL-, ISOALKYL-, CYCLOALKYL-, AND AN ARYL GROUP, AND (2) 25-75 PARTS OF A 2,2,4-TRIMETHYLDIHYDROQUINOLINE SUBSTITUTED IN THE PHENYL RADICAL BY AN ALKOXY GROUP.
Claim 2
Dependent Claim
89 words
AN IMPROVED RUBBER VULCANIZATE SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND A SYNTHETIC RUBBERY COPOLYMER OF BUTADIENE AND STRYENE, SAID VULCANIZATE BEING INHIBITED AGAINST FLEX-CRACKING BY THE INCORPORATION THEREIN, PRIOR TO VULCANIZATION, OF 0.5-5% BY WEIGHT OF A MIXTURE CONSISTING ESSENTIALLY OF (1) 75-25 PARTS OF A P-PHENYLENE DIAMINE DERIVATIVE SUBSTITUTED AT THE NITROGEN BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ALKYL-, ISOALKYL-, CYCLOALKYL-, AND AN ARYL GROUP, AND (2) 25-75 PARTS OF A 2,2,4-TRIMETHYLDIHYDROQUINOLINE SUBSTITUTED IN THE PHENYL RADICAL BY AN ALKOXY GROUP.
References Cited (Backward Citations)
GB505113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |