| 摘要 |
PROBLEM TO BE SOLVED: To provide a natural rubber capable of saving work such as not necessarily requiring a mastication process, also not requiring to perform a viscosity adjustment by using a kneading machine, etc., such as a dry pre-breaker, etc., and without causing unevenness in its mastication quality, and a method for producing the same. SOLUTION: This natural rubber is obtained by the coagulation treatment of natural rubber latex within 3.0-4.2 pH range by a coagulating acid and the natural rubber obtained by such method has a low molecular weight and not necessarily requires the mastication process, and also is obtained by adding a hydrazine compound or triazole compound as its viscosity stabilizer. COPYRIGHT: (C)2006,JPO&NCIPI
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