Thermoplastic elastomer composition and use thereof

Abstract

The present invention relates to: a thermoplastic elastomer composition which comprises 5-30 parts by mass of an ethylene / alpha-olefin / unconjugated polyene copolymer (A), 20-40 parts by mass of a crystalline olefin resin (B) having a density of 0.90-0.92 g / cm<3>, 20-40 parts by mass of a high-density polyethylene (C) having a density of 0.94-0.97 g / cm<3>, 5-12 parts by mass of an ethylene / alpha-olefin copolymer (D) formed from ethylene and a C3-12 alpha-olefin, and 5-9 parts by mass of a silicone compound (E) (the sum of components (A), (B), (C), (D), and (E) is taken as 100 parts by mass); and an automotive glass run channel formed from the thermoplastic elastomer composition.

Description

technical field

[0001] The present invention relates to an olefinic thermoplastic elastomer composition and its use. Background technique

[0002] Olefin-based thermoplastic elastomers are lightweight, easy to recycle and reuse, and do not generate toxic gases when incinerated. Therefore, from the viewpoint of energy saving, resource saving, and environmental protection in recent years, they are widely used in particular as substitutes for vulcanized rubber. Automobile parts, industrial machinery parts, electrical-electronic parts, building materials, etc. As an example of such an automobile part, a window glass run channel can be cited.

[0003] The window glass run is a sheet (guide member) placed between the window glass and the window frame. Since sliding properties with the glass are required, many existing products contain silicone-based additives.

[0004] However, in the manufacturing process of the window glass run channel, the extruded linear sheet is inserted in...

Examples

Embodiment 1

[0144] (1) Production of thermoplastic elastomer (α) containing ethylene-α-olefin-non-conjugated polyene copolymer (A)

[0145] Using a Henschel mixer, Mitsui EPT (trademark) 3072EPM (ethylene-propylene-ENB copolymer manufactured by Mitsui Chemicals Co., Ltd.) (catalogue value : ethylene content 64% by mass, ENB content 5.4% by mass; molar conversion value (total of ethylene and propylene is 100 mol%): ethylene content 75.8 mol%, propylene content 24.2 mol%; oil extension amount 40 parts by mass; iodine Value 11.5) 140 parts by mass of polypropylene-based resin (trade name: Prime Polypro E-200GP, manufactured by Prime Polymer Co., Ltd., homopolymer type, MFR (230°C, 21.2 N) 2.0g / 10min, density 0.90g / cm 3 ) 40 parts by mass, 0.3 parts by mass of organic peroxide (1,3-bis(tert-butylperoxyisopropyl)benzene) as a crosslinking agent, 0.3 parts by mass of divinylbenzene as a crosslinking auxiliary agent, As an antioxidant, 0.20 parts by mass of phenolic antioxidant (trade name: IR...

technical field

[0001] The present invention relates to an olefinic thermoplastic elastomer composition and its use. Background technique

[0002] Olefin-based thermoplastic elastomers are lightweight, easy to recycle and reuse, and do not generate toxic gases when incinerated. Therefore, from the viewpoint of energy saving, resource saving, and environmental protection in recent years, they are widely used in particular as substitutes for vulcanized rubber. Automobile parts, industrial machinery parts, electrical-electronic parts, building materials, etc. As an example of such an automobile part, a window glass run channel can be cited.

[0003] The window glass run is a sheet (guide member) placed between the window glass and the window frame. Since sliding properties with the glass are required, many existing products contain silicone-based additives.

[0004] However, in the manufacturing process of the window glass run channel, the extruded linear sheet is inserted in...

Examples

Embodiment 1

[0144] (1) Production of thermoplastic elastomer (α) containing ethylene-α-olefin-non-conjugated polyene copolymer (A)

[0145] Using a Henschel mixer, Mitsui EPT (trademark) 3072EPM (ethylene-propylene-ENB copolymer manufactured by Mitsui Chemicals Co., Ltd.) (catalogue value : ethylene content 64% by mass, ENB content 5.4% by mass; molar conversion value (total of ethylene and propylene is 100 mol%): ethylene content 75.8 mol%, propylene content 24.2 mol%; oil extension amount 40 parts by mass; iodine Value 11.5) 140 parts by mass of polypropylene-based resin (trade name: Prime Polypro E-200GP, manufactured by Prime Polymer Co., Ltd., homopolymer type, MFR (230°C, 21.2 N) 2.0g / 10min, density 0.90g / cm 3 ) 40 parts by mass, 0.3 parts by mass of organic peroxide (1,3-bis(tert-butylperoxyisopropyl)benzene) as a crosslinking agent, 0.3 parts by mass of divinylbenzene as a crosslinking auxiliary agent, As an antioxidant, 0.20 parts by mass of phenolic antioxidant (trade name: IR...

Images