US3682687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for pretreating glass fibers for reinforcing rubber articles
Assignee: Nippon Rayon Co Ltd
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Filing: 1969-07-03
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Granted: 1972-08-08
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Expires: 1989-07-03
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS FOR PRETREATING GLASS FIBERS FOR REINFORCING VULCANIZABLE RUBBER ARTICLES, WHICH COMPRISES APPLYING TO A GLASS FIBER AN AQUEOUS DISPERSION CONTAINING AN AMINOSILANE AND AN EPOXY COMPOUND, AND THEN APPLYING TO SAID GLASS FIBERS AN AQUEOUS DISPERSION OF A RESORICINOL-FORMALDEHYDE-LATEX MIXTURE AND AN N-METHYLOL ALKYL AMIDE, AND HEATING SAID GLASS FIBER THUS TREATED AT A TEMPERATURE OF ABOUT 110-240*C. THE GLASS FIBER OBTAINED HAS IMPROVED ADHESION TO RUBBER, WHICH IS NOT DETERIORATED WHEN LEFT IN AIR FOR EXTENDED PERIODS.
Inventors
- 👤 Satoru Obuchi
- 👤 Tokuji Fukuoka
- 👤 Saburyo Nagato
- 👤 Kunio Murakami
- 👤 Tamikazu Shigeta
- 👤 Hiroyuki Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:12
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/27; C08J2321/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |