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US 8,357,726 B2Granted
Devulcanization of rubber and other elastomers
AssigneeVertex, Inc.
InventorMichel Marc
Life of this patent
Estimating the term…
Abstract
A process for devulcanizing crosslinked elastomer particles comprising applying an alternating radio frequency dielectric field to a composition comprising crosslinked elastomer particles. The alternating radio frequency dielectric field preferably has a frequency between 1 and 100 MHz and a voltage between 1000 and 10,000 V.
Claims24
A process for devulcanizing crosslinked elastomer particles comprising:
- providing a composition comprising vulcanized crosslinked elastomer particles in a devulcanization apparatus;
- and
- applying an alternating radio frequency electric field to said composition comprising said vulcanized crosslinked elastomer particles, said alternating radio frequency electric field having a frequency and voltage sufficient to devulcanize said crosslinked elastomer particles in a manner that results in said devulcanized composition having substantially the same surface and interior properties.
A process for devulcanizing crosslinked elastomer particles comprising:
- providing a composition comprising vulcanized crosslinked elastomer particles in a devulcanization apparatus;
- and
- applying an alternating radio frequency electric field to said composition comprising said vulcanized crosslinked elastomer particles, said alternating radio frequency electric field having a frequency and voltage that provides substantially even heating of said composition to thereby devulcanize said crosslinked elastomer particles.
Dependencies are inferred from the claim text.