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Method for producing silicon dioxide-containing nature rubber composition and silicon dioxide-containing nature rubber composition produced with the method

A technology of natural rubber latex and silicon dioxide, applied in the field of natural rubber composition, can solve the problems of no discovery and the like, and achieve the effects of low heat accumulation and good heat accumulation

Inactive Publication Date: 2012-10-24
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Japanese Patent Application (A) No. 2003-221402 describes mixing rubber latex, silica, and cationic polymer in the presence of a silane coupling agent, thereby causing the rubber latex and silica to co-coagulate and oxidize the Silica is well dispersed in the rubber, but no descriptions of drying by addition of amphoteric surfactants have been found

Method used

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  • Method for producing silicon dioxide-containing nature rubber composition and silicon dioxide-containing nature rubber composition produced with the method
  • Method for producing silicon dioxide-containing nature rubber composition and silicon dioxide-containing nature rubber composition produced with the method
  • Method for producing silicon dioxide-containing nature rubber composition and silicon dioxide-containing nature rubber composition produced with the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2 and comparative example 1-4

[0023] 1. Preparation of silica masterbatch

Embodiment 1

[0025] (1) Preparation of silica slurry

[0026] 100 g of precipitated silica (Nipsil VN3 manufactured by Nihon Silica) was added to 500 g of water and mixed and dispersed with Ultimizer manufactured by Sugino Machine to obtain a silica slurry. To this silica slurry, 1.0 g of Adeka Amphote AB-35L having the following general formula was added as a compound having both a quaternary ammonium salt structure and a carboxyl ion in the molecule and dispersed by stirring. The average particle size of the silica in the silica slurry is about 0.15 μm.

[0027] AB-351

[0028]

[0029] (2) prepare natural rubber latex

[0030] To natural rubber latex (F-LTX) harvested from Hat Yai district in Thailand, 1.0% by mass of ammonium was added as a stabilizer / preservative. The resulting mixture was centrifuged with a Westfalia separator to obtain concentrated latex (C-LTX). The solid content of this C-LTX was 30% by mass.

[0031] (3) Preparation of masterbatch

[0032] The si...

Embodiment 2

[0035] (1) Preparation of silica slurry

[0036] The same procedure as in Example 1 was used except that 1.0 g of Adeka Amphote PB-30L having the following general formula was used as a compound having both a quaternary ammonium salt structure and a carboxyl ion in the molecule.

[0037] PB—30L

[0038]

[0039] (2) prepare natural rubber latex

[0040] The same latex as in Example 1 was used.

[0041] (3) Preparation of masterbatch

[0042] The same procedure as in Example 1 was used.

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Abstract

A method for preparing a natural rubber composition containing silicon oxide, removing water content in a liquid composition with a quaternary ammonium salt structure and carboxyl ion and simultaneously containing natural rubber latexes, silicon oxide and molecules; and a natural rubber composition containing silicon oxide obtained by the method.

Description

technical field [0001] The present invention relates to a method for preparing a silica-containing natural rubber composition and a silica-containing natural rubber composition obtained by the method. More specifically, the present invention relates to a method for preparing a silica-containing natural rubber composition having excellent low heat build-up from silica slurry, natural rubber latex and an amphoteric surfactant and the Silica-containing natural rubber composition. Background technique [0002] Japanese Patent Application (A) No. 2003-221402 describes mixing rubber latex, silica, and cationic polymer in the presence of a silane coupling agent, thereby causing the rubber latex and silica to co-coagulate and oxidize the Silicon dispersed well into the rubber, but no description was found of drying by addition of amphoteric surfactants. Contents of the invention [0003] It is therefore an object of the present invention to prepare a silica masterbatch capable o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/02C08K3/36C08K5/19C08K5/20C08J3/205
Inventor 川面哲司鹿久保隆志松田敬
Owner THE YOKOHAMA RUBBER CO LTD