MANUFACTURING METHOD OF NATURAL RUBBER

PROBLEM TO BE SOLVED: To provide a manufacturing method of natural rubber excellent in productivity and capable of easily controlling a quality as compared with conventional rubbers of RSS and TSR. SOLUTION: In the manufacturing method of natural rubber, a drying step is included and dries it at a t...

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Bibliographic Details
Main Authors KISHIMA KEN, TORATANI HIROTOSHI
Format Patent
LanguageEnglish
Published 29.01.2003
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:PROBLEM TO BE SOLVED: To provide a manufacturing method of natural rubber excellent in productivity and capable of easily controlling a quality as compared with conventional rubbers of RSS and TSR. SOLUTION: In the manufacturing method of natural rubber, a drying step is included and dries it at a temperature of 80 deg.C-160 deg.C using a conveyor type drying machine. It is desirable that a step for adding a constant viscosity agent is included until the drying step is complete. The employable constant viscosity agent can include a hydrazide compound represented by the following general formula (I): R-CONHNH2 (R in the formula (I) represents an alkyl group having the carbon number of 3-30; a cycloalkyl group having the carbon number of 3-30 or an aryl group).
Bibliography:Application Number: JP20010216749