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Thermoplastic elastomer and molded product produced from the same

A thermoplastic elastomer, modified technology, applied in the direction of coating, etc., can solve the problems that cannot be said to be improved sufficiently, and achieve the effects of excellent dry touch, no sticky feeling, and excellent wear resistance

Active Publication Date: 2006-06-28
MITSUBISHI RAYON CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, according to the evaluation of the present inventors, since the above-mentioned thermoplastic elastomer composition contains an acrylic-modified organopolysiloxane, although the abrasion resistance is improved, it cannot be said that the improvement is sufficient.

Method used

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  • Thermoplastic elastomer and molded product produced from the same
  • Thermoplastic elastomer and molded product produced from the same

Examples

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Embodiment

[0129] Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited to the following Example unless the summary is exceeded. The materials and evaluation methods used in the following examples are as follows.

[0130]

[0131] In Examples 1 to 14 and Comparative Examples 1 to 4, 0.1 parts by weight of tetrakis[methylene-3-(3',5'-bis tert-butyl-4'-hydroxyphenyl) propionic acid] methane ("Irganox 1010" produced by Ciba Specialty Chemicals Co., Ltd.) was used as a stabilizer, mixed in a Henschel mixer, and supplied to the plastic using a gravimetric feeder. The twin-screw extruder "BT-30" (L / D = 30, rotating in the same direction) produced by the Engineering Research Institute was extruded at 210°C and the screw speed was 200rpm (dynamic heat treatment) to obtain a thermoplastic elastomer composition . The obtained thermoplastic elastomer was supplied to "CN-75" manufactured by Niigata Iron Works Co., Ltd., and injection-molded un...

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Abstract

The present invention provides a thermoplastic elastomer excellent in flexibility and abrasion resistance, and excellent in dry touch. This thermoplastic elastomer consists of the following components (a) to (d). Component (a): (A)-(B) block copolymer composed of vinyl aromatic compound block (A) and conjugated diene polymer block (B) and / or (A)-(B )-(A) Hydrogenated block copolymer to saturate at least 90% of the double bonds of the conjugated diene part, hydrogenated block copolymer with a weight average molecular weight of 80,000 to 1 million; component (b): olefin crystal Resin; component (c): softener for hydrocarbon rubber; component (d): acrylic modified organopolysiloxane. Wherein, the weight ratio of component (a) / (b) is 15 / 85~85 / 15; Relative to 100 parts by weight of component (a), the ratio of component (c) is 10~300 parts by weight; Relative to a total of 100 The ratio of components (a) to (c) and component (d) in parts by weight is 0.1 to 10 parts by weight; at least components (a) and (d) are subjected to dynamic heat treatment in the presence of organic peroxides.

Description

technical field [0001] The present invention relates to a thermoplastic elastomer and its molded body. Specifically, it relates to a thermoplastic elastomer and its molded body which are excellent in injection moldability, scratch resistance, abrasion resistance, and touch. Background technique [0002] Thermoplastic elastomers are excellent in rubber elasticity, colorability, and appearance, and can be formed by various moldings such as injection molding, extrusion molding, blow molding, sheet molding, and vacuum molding like ordinary thermoplastics. Automobiles, packing for building materials, interior and exterior materials for automobiles, parts for building materials, miscellaneous goods, etc. are widely used and rapidly expanding. In particular, olefin-based thermoplastic elastomers (TPO) and styrene-based thermoplastic elastomers (TPS) have been widely used in recent years because they are light in weight, easy to recycle, and high in cost performance. On the other h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02B29C45/00C08L23/06C08L51/08
CPCC08L23/06C08L23/10C08L51/085C08L53/025C08L83/04C08L83/10C08L91/00C08L2666/24C08L2666/06
Inventor 盛弘之生明英一郎峯村正彦田中正喜
Owner MITSUBISHI RAYON CO LTD
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