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Thermoplastic elastomer and thermoplastic elastomer composition

A technology of thermoplastic elastomers and elastomeric polymers, applied in the field of thermoplastic elastomers and thermoplastic elastomer compositions, can solve the problems of unsuitable oil resistance and poor oil resistance, and achieve excellent cycle performance and excellent compression set , high value effect

Inactive Publication Date: 2008-05-14
YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the thermoplastic elastomer described in the above-mentioned Patent Document 1 may have cycle properties, but may have poor oil resistance, and may not be suitable for applications requiring oil resistance.

Method used

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  • Thermoplastic elastomer and thermoplastic elastomer composition
  • Thermoplastic elastomer and thermoplastic elastomer composition
  • Thermoplastic elastomer and thermoplastic elastomer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1～1-4 and comparative example 1-1～1-3

[0254] First, into a pressurized kneader set at 180° C., epoxidized natural rubber (ENR-50, epoxidation rate 50%, manufactured by Mallesiagum Bureau (MRB) was charged in parts by mass shown in Table 1 below. ) and an anti-aging agent (Irganox 1010, manufactured by Chiba Specialty Chemical Corporation) were kneaded for 5 minutes.

[0255] Then, 3-amino-1,2,4-triazole (manufactured by ATA, Nippon Kabito Co., Ltd.), 2-aminothiazole (manufactured by Wako Pure Chemical Industries, Ltd.), -4-hydroxymethylimidazole (manufactured by Nippon Synthetic Chemicals Co., Ltd.), 4-aminopyridine (manufactured by Hiroei Chemical Co., Ltd.), diethylenetriamine (manufactured by Tokyo Chemical Industry Co., Ltd.), 3-mercaptotriazole (manufactured by Otsuka Chemical Co., Ltd. ) or 2-mercaptoimidazole (manufactured by Otsuka Chemical Co., Ltd.), kneaded for 10 minutes, and reacted to prepare a thermoplastic elastomer composition containing a thermoplastic elastomer. By performing IR analysis, it ca...

Embodiment 1-5 and 1-6

[0278] First, into a pressurized kneader set at 180° C., an acrylic rubber (AR54, manufactured by Nippon Zeon Co., Ltd.) having an epoxy structure and an anti-aging agent (Irganox 1010, Ciba Specialty Co., Ltd.) were charged in parts by mass shown in Table 2 below. ・Chemicaruzu Co., Ltd.), kneaded for 5 minutes.

[0279] Then, 3-amino-1,2,4-triazole (manufactured by ATA, Nippon Kabito Co., Ltd.) was added in parts by mass shown in Table 2 below, and kneaded for 10 minutes to react, thereby preparing a compound containing thermoplastic Elastomer thermoplastic elastomer composition. By performing IR analysis, it can be confirmed that the thermoplastic elastomer contains an epoxy-containing structure, a hydroxyl group, and a nitrogen-containing heterocycle.

[0280] For each of the thermoplastic elastomer compositions obtained in Examples 1-5 and 1-6, JIS-A hardness, tensile properties, compression set, and oil resistance were measured according to the methods described later, an...

Embodiment 2-1 and comparative example 2-1

[0288] First, epoxidized natural rubber (ENR-50, epoxidation rate 50%, manufactured by Mallesiagum Bureau (MRB) ) and an anti-aging agent (Irganox 1010, manufactured by Chiba Specialty Chemical Corporation) were kneaded for 5 minutes.

[0289] Then, polyethyleneimine (Epomin SP-200, weight-average molecular weight 10000, manufactured by Nippon Shokubai Co., Ltd.) or diethylenetriamine (made by Tokyo Chemical Industry Co., Ltd.) was added in parts by mass shown in Table 3 below, and mixed It was kneaded for 10 minutes and reacted to prepare a thermoplastic elastomer composition containing a thermoplastic elastomer. By performing IR analysis, it can be confirmed that the thermoplastic elastomer contains an epoxy structure and a hydroxyl group and a primary amino group and / or a secondary amino group.

[0290] For each of the thermoplastic elastomer compositions obtained in Example 2-1 and Comparative Example 2-1, JIS-A hardness, tensile properties, compression set, and oil resis...

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Abstract

The invention provides a thermoplastic elastomer which has the advantages of high cyclicity and oil resistance as well as excellent mechanical strength, and in particular, excellent permanent deformability through compression, as well as a thermoplastic elastomer composite including the thermoplastic elastomer. The thermoplastic elastomer is made of an elastomeric polymer having epoxide, hydroxy group, and a nitrogen-containing heterocycle, wherein, the nitrogen-containing heterocycle is bonded to backbone of the elastomeric polymer through nitrogen atom or oxygen atom. The thermoplastic elastomer (the third proposal) is an elastomeric polymer having epoxide and hydroxy group, and is obtained by reacting a compound (C) having epoxide with polyamine compound (D) having more than two primaquine groups, branched carbon and / or branched nitrogen.

Description

technical field [0001] The present invention relates to a thermoplastic elastomer and a thermoplastic elastomer composition, in particular to a thermoplastic elastomer having the characteristic of repeatedly reproducing cross-link formation and cross-link depolymerization with changes in temperature (hereinafter, sometimes simply referred to as "cyclability") body, and a thermoplastic elastomer composition containing the thermoplastic elastomer. Background technique [0002] In recent years, recycling of used materials has been desired from the viewpoint of environmental protection, resource saving, and the like. Cross-linked rubber (vulcanized rubber) has a stable three-dimensional network structure covalently bonded with polymer substances and cross-linking agents (vulcanizing agents), showing very high strength, but because of the cross-linking produced by strong covalent bonds , so it is difficult to reshape. On the other hand, thermoplastic elastomers utilize physical...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L25/04C08L33/00C08L77/00
Inventor 知野圭介酒井智行
Owner YOKOHAMA RUBBER CO LTD
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