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Cycloolefin-based rubber and process for producing same, rubber composition, crosslinked rubber object, and tire

A technology of cyclic olefin and manufacturing method, which is applied in the field of rubber cross-linked products, tires, rubber for tire materials, and cyclic olefin-based rubber, can solve the problem of inability to cope with low fuel consumption, inability to match, and deterioration of tire physical properties And other issues

Active Publication Date: 2017-05-10
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the research of the present inventors, polymer chain-end alkoxy silylated cyclic olefin-based rubbers, depending on the production conditions and storage conditions, can be stored for a long period of time after being recovered by steam stripping, which is a conventional recovery method. Among them, components that are not soluble in common organic solvents are produced, and because of this, there are problems that they cannot be blended and kneaded, and even after molding and vulcanization, the physical properties of the tire will deteriorate, and the problem that it cannot meet the requirements for low fuel consumption

Method used

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  • Cycloolefin-based rubber and process for producing same, rubber composition, crosslinked rubber object, and tire
  • Cycloolefin-based rubber and process for producing same, rubber composition, crosslinked rubber object, and tire
  • Cycloolefin-based rubber and process for producing same, rubber composition, crosslinked rubber object, and tire

Examples

Experimental program
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Embodiment

[0125] Hereinafter, the present invention will be further described based on detailed examples, but the present invention is not limited to these examples. In addition, the following "parts" are based on weight unless otherwise specified. In addition, experiments and evaluations are as follows.

[0126]

[0127] Gel permeation chromatography (GPC) system HLC-8220 (manufactured by Tosoh Co.) and H-type column HZ-M (manufactured by Tosoh Co.) were used to measure tetrahydrofuran as a solvent at 40 ° C. The weight of the cyclic olefin rubber Average molecular weight (Mw) and molecular weight distribution (Mw / Mn) were measured as polystyrene conversion values.

[0128]

[0129] by deuterated chloroform solution of cyclic olefin rubber 1 H-NMR spectrum measurement was used to measure the ratio of the peak integral value unique to silyl groups and the peak integral value derived from olefins. Then, the ratio of terminal silyl groups introduced into the polymer chain of the cy...

reference example 1

[0142] (Reference example 1) Preparation of diisobutyl mono(n-hexyloxy)aluminum / toluene solution (2.5% by weight)

[0143] In a nitrogen atmosphere, 88 parts of toluene and 7.8 parts of a 25.4% by weight triisobutylaluminum / n-hexane solution (manufactured by Tosoh Finechem) were added to a glass container with a stirrer. Cool to -45°C, and slowly add 1.02 parts of n-hexanol (equal molar amount to triisobutylaluminum) dropwise while vigorously stirring. Thereafter, it was left to stand at room temperature while stirring to prepare a diisobutylmono(n-hexyloxy)aluminum / toluene solution (2.5% by weight).

manufacture example 1

[0144] (Production Example 1) Production of terminal silane-modified cyclic olefin polymer solution (A-1)

[0145] Under nitrogen atmosphere, 435 parts of 1.0 wt% WCl 6 / toluene solution and 215 parts of 2.5% by weight of diisobutyl mono(n-hexyloxy)aluminum / toluene solution prepared in Reference Example 1 were added in a pressure-resistant reaction vessel with a stirrer, and stirred for 15 minutes, thereby A catalyst solution was obtained. Then, under a nitrogen atmosphere, 1500 parts of cyclopentene as a monocyclic olefin and 5.4 parts of bis(triethoxysilyl)ethylene were added to a pressure-resistant glass reaction vessel with a stirrer, where 650 parts of the catalyst solution prepared above were subjected to a polymerization reaction at 25° C. for 4 hours. After 4 hours of polymerization reaction, excess ethanol was added to the pressure-resistant reaction container to terminate the polymerization, and a terminal silane-modified cyclic olefin polymer solution (A-1) was ob...

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Abstract

Provided is a cycloolefin-based rubber which has a weight-average molecular weight of 100,000-800,000, has a silyl group at a polymer chain terminal, and contains a fatty acid ester of a polyhydric alcohol. According to the present invention, a cycloolefin-based rubber having excellent workability when mixed / kneaded and giving excellent fuel-saving properties can be provided.

Description

technical field [0001] The present invention relates to a cyclic olefin-based rubber, and more specifically, to a rubber suitable as a tire material having excellent tire physical properties such as processability during compounding and kneading, and low fuel consumption due to its small amount of toluene-insoluble components. Furthermore, the present invention relates to a method for producing such a cyclic olefin-based rubber, a rubber composition, a cross-linked rubber, and a tire using such a cyclic olefin-based rubber. Background technique [0002] In recent years, with emphasis on resource conservation and environmental measures, the demand for lower fuel consumption of automobiles has gradually become stricter, and automobile tires are also required to provide lower fuel consumption by reducing rolling resistance. In order to reduce the rolling resistance of the tire, a rubber material capable of forming vulcanized rubber with low heat generation is generally used as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/08B60C1/00C08K3/04C08K3/36C08K5/103C08L65/00
CPCB60C1/00C08K3/04C08G61/08C08K3/36C08K5/103C08G2261/135C08G2261/1644C08G2261/418C08G2261/3321C08G2261/726C08G2261/76C08L65/00C08L71/02C08C1/15C08F6/22C08F8/00C08F132/04
Inventor 角替靖男奥野晋吾仓本直明
Owner ZEON CORP
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