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Thermoplastic elastomer composition, foam body and laminated body

A thermoplastic elastomer and composition technology, which can be applied in the directions of synthetic resin layered products, layered products, transportation and packaging, etc., can solve the problems of decreased foam manufacturing efficiency and other problems

Inactive Publication Date: 2011-09-21
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned foams, due to poor mold release after injection foam molding, the deformation of the foam and the decrease in production efficiency may occur, and there is room for improvement in mold release properties.

Method used

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  • Thermoplastic elastomer composition, foam body and laminated body
  • Thermoplastic elastomer composition, foam body and laminated body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] (Preparation of thermoplastic elastomer composition)

[0131] 100 parts by weight (4,080 g) of the hydrogenated product of A-1 styrene-conjugated diene-styrene block copolymer, B-1 propylene-based Resin, 71 parts by weight (2,880 g) of C-1 mineral oil softener per 100 parts by weight of A-1, 59 parts by weight (2,400 g) of D-1 ethylene-propylene copolymer per 100 parts by weight of A-1 0.05 parts by weight (6 g) of erucamide (trade name NEUTRON S manufactured by Nippon Seika Co., Ltd.), 0.05 parts by weight of rubber and 100 parts by weight in total of A-1, B-1, C-1, and D-1 Parts (6g) of calcium stearate, 0.15 parts by weight (18g) of antioxidant (trade name IRGANOX 1010 manufactured by Ciba Specialty Chemicals Co., Ltd.: 0.1 parts by weight (12g), product name Ultranox 626 manufactured by GE Specialty Chemicals Co., Ltd.: 0.05 parts by weight (6 g)), melted and kneaded with a 16L Banbury Kneader manufactured by Kobe Steel at a rotation speed of 68 rpm, and then molded ...

Embodiment 2

[0137] As additives, a nucleating agent (comprising polypropylene masterbatch manufactured by Nippon Physical and Chemical Co., Ltd., trade name Gel AllD 10% / Milliken & Company, trade name HYPERFORM HPN-68L 1.7%), calcium carbonate, and Other than that, it carried out similarly to Example 1. Table 1 shows the evaluation results.

Embodiment 3

[0139] In addition to using the hydrogenated styrene-conjugated diene-styrene block copolymer of A-2 instead of the hydrogenated styrene-conjugated diene-styrene block copolymer of A-1, and Example 1 was carried out in the same manner. Table 1 shows the evaluation results.

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Abstract

A thermoplastic elastomer composition for injection molding is provided that includes component (A), component (B), component (C) and component (D) below, relative to 100 parts by weight of component (A), component (B) having a content of 5 to 150 parts by weight, component (C) having a content of 5 to 300 parts by weight, and component (D) having a content of 5 to 150 parts by weight. (A): A hydrogenated product of a block copolymer composed of a block (a) composed of an aromatic vinyl compound-based monomer unit, and a block (b) composed of a conjugated diene compound-based monomer unit, having a 1,2-bond content of not less than 60%, (B): a propylene-based resin, (C): a mineral oil softener, and (D): an ethylene-propylene copolymer rubber having a Mooney viscosity (ML1+4, 100 DEG C.) of 20 to 200, an ethylene-based monomer unit having a content of 40 to 80 wt % (relative to 100 wt % of the copolymer rubber). There are also provided a foam body formed by foam injection molding of the thermoplastic elastomer composition, and a laminated body composed of a layer formed by molding the thermoplastic elastomer composition and a layer formed by molding a thermoplastic resin.

Description

technical field [0001] The present invention relates to thermoplastic elastomer compositions, foams and laminates. Background technique [0002] For foams used in automotive interior materials, home appliances, furniture, etc., flexibility, heat resistance, etc. are required, and injection foaming of styrene-based thermoplastic elastomer compositions has been studied as foams A foam of a styrene-based thermoplastic elastomer composition containing a hydrogenated product of a block copolymer containing a block composed of a monomer unit based on an aromatic vinyl compound and a polypropylene-based resin and a block composed of a monomer unit based on a conjugated diene compound. For example, Japanese Unexamined Patent Publication No. 2009-161740 proposes a foam manufactured by injection foaming a thermoplastic elastomer composition containing a hydrogenated block copolymer, propylene resin, mineral oil An elastomer composition of a softener and an ethylene-propylene copolym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/10C08L23/12C08L23/16B32B27/08B32B27/18
CPCC08L53/02B32B3/26B32B27/32Y10T428/31931Y10T428/249953C08L53/025C08L23/10C08L23/16B32B5/18B32B2270/00B32B2266/025C08L2666/02C08L23/12C08L2666/24B32B27/08
Inventor 三浦悠山本裕也
Owner SUMITOMO CHEM CO LTD
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