| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing vulcanized rubbers with improved viscoelasticity property for use in tire manufacturing, and a vulcanized rubber obtained by this method. SOLUTION: The method of manufacturing vulcanized rubbers includes: a first process for kneading an S-(2-aminoethyl) thiosulfuric acid or its metal salt, a rubber component, a filler and a sulfur constituent together; and a second process for performing heat treatment on the kneaded product obtained by the previous process. The vulcanized rubber obtained by this method is also provided. Preferably, a temperature condition of the heat treatment in the second process ranges from 120°C to 170°C. COPYRIGHT: (C)2011,JPO&INPIT
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