Process for use of crumb rubber in moldable formulations
US6579482B1 · kind B1 · utility
6Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2000 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | May 8, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/912
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Roofing tiles, sheet rubber, and other rubber-based articles are formed from devulcanized crumb rubber by compounding the rubber with sulfur, a compound containing bound water, and a flame retardant. The articles have a high rubber content and are moldable and formable without the need for added polymeric binders, and are self-extinguishing upon exposure to flame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.