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US3692734A
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Process of making a rubber composition for adhering rubbers and textiles
Assignee: Evonik Operations GmbH
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Filing: 1969-10-10
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Granted: 1972-09-19
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Expires: 1989-10-10
Abstract
Abstract A PREMIX IS MADE FOR INCORPORATION IN A NATURAL OR SYNRHETIC VULCANIZABLE RUBBER MIXTURE OF IMPROVED ADHESION TO TEXTILES BY CONGULATING AN AQUEOUS DISPERSION OF FINELY DIVIDED PRECIPITATED SILICIC ACID OR SILICATE AS A RUBBER LATEX AND MIXING RESORCINOL AND HEXAMETHYLENETETRAMINE AS RESIN-FORMING COMPONENTS INTO THE DRY COGULATE. THE INVENTION ALSO COMPRISES THE VULCANIZABLE PREMIX THUS MADE IN WHICH SPECIFIC AMOUNTS OF SYNTHETIC RUBBER, SILICIC ACID, RESORCINOL AND HEXAMETHYLENETETRAMINE ARE INCORPORATED.
Inventors
- 👤 Erhard Klotzer
- 👤 Willi Clas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:57
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08K; C08K3/00; C08K3/34; C08L; C08L21/00; C08J2321/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |