Method of reducing pollution in microwave devulcanization process
US4459450A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1982 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Sep 28, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/788
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention provides a method of controlling the pollution in a microwave devulcanization process consisting of passing particles of sulfur-vulcanized elastomer containing polar groups through a microwave energy devulcanization device to generate heat in the devulcanization of said particles whereby said particles exits said device at a temperature in excess of 260.degree. C., feeding said particles from the devulcanization device to feed input of an extruder, extruding said particles to exit the extruder at a temperature of about 90.degree. to 125.degree. C. as an extrudate. The extrudate can be used per se as a compounding stock or sent to a mill to be sheeted and stored until needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.