Title: Natural rubber having a constant viscosity and production thereof
Application Number: 94102674 Application Date: 1994.03.02
Publication Number: 1095077 Publication Date: 1994.11.16
Approval Pub. Date: 2002.05.15 Granted Pub. Date: 2002.05.15
International Classifi-cation: C08C4/00;C08K5/25
Applicant(s) Name: Bridgestone Corporation Address:
Inventor(s) Name: Hirotoshi Toratani;Eiji Nakamura;Hideki Aoyama
Attorney & Agent: QI ZENGDU TIAN SHEREN
Abstract:
    Natural rubber containing viscosity stabilizers is treated under drying conditions to result in 10% or less of the difference of gel content and 85% or more of molecular weight retention between before and after drying, and methods for manufacturing natural rubber using same method. Natural rubber containing viscosity stabilizers is treated with a strainer, and methods for manufacturing natural rubber comprise treating with a strainer after compounding hydrazide stearate into the natural rubber. Gelation (storage hardening) is suppressed and a decrease in molecular weight is prevented.
Time: 6