Method for reclamation of vulcanized rubber
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United States of America Patent
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-
Sep 4, 1984
Grant Date -
N/A
app pub date -
Nov 18, 1982
filing date -
Nov 19, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Reclamation of vulcanized rubber is effected by a method which comprises heating powdered vulcanized rubber to a temperature for desulfurization of the rubber and, on completion of the desulfurization, quickly cooling the desulfurized rubber to a temperature at which substantially no oxidation of desulfurized rubber proceeds. This method obviates otherwise indispensable incorporation of process oil or other similar additive to the powdered vulcanized rubber for the purpose of retarding the oxidation of rubber molecules. When the reclaimed rubber obtained by this method is blended with newly supplied rubber, the resultant vulcanized rubber shows sparing degradation of physical properties.
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