Devulcanization of cured rubber
US6992116B2 · kind B2 · utility
20Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2003 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Apr 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a process for devulcanizing cured rubber into devulcanized rubber that is capable of being recompounded and recured into useful rubber products, said process comprising heating the cured rubber to a temperature which is within the range of about 150° C. to about 300° C. under a pressure of at least about 3.4×106 Pascals in the presence of a mixture of carbon dioxide and 2-butanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.