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Thermal plastic resin composition and formed articles

A technology of thermoplastic resin and composition, applied in the field of α-olefin·ethylene or vinylidene compound copolymer composition and its molded products, and thermoplastic resin composition, which can solve the problems of not necessarily peeling off

Inactive Publication Date: 2006-01-25
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when processing an electric wire with a cutter etc., although it is desired to easily peel off such a thermoplastic resin composition layer from the electric wire, it may not be easy to peel off.

Method used

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  • Thermal plastic resin composition and formed articles
  • Thermal plastic resin composition and formed articles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0161] 36 parts by weight of ethylene-styrene copolymer (ESI-30), 61 parts by weight of the magnesium hydroxide treated with the lubricant, 3 parts by weight of the siloxane, 0.8 parts by weight of the coupling agent, and 0.03 parts by weight of the above-mentioned initiator Part by weight, and 1 part by weight of the above lubricant (a) (trade name ethylenebiserucamide), melted and kneaded with a Banbury mixer at a resin temperature of 190°C, granulated to obtain a thermoplastic resin composition物particles.

[0162] Then, the obtained thermoplastic resin composition pellets were added to a single-screw extruder, melted and kneaded at a resin temperature of 200°C, the melt was extruded from the die, and the exit of the die was visually inspected to observe the occurrence of eye drops. The above-mentioned method evaluates the prevention of the appearance of eye feces.

[0163] In addition, the above-mentioned thermoplastic resin composition pellets were put into a laboratory plasti...

Embodiment 2～4 and comparative example l～2

[0165] In Example 1, except for the composition ratio shown in Table 1, it was implemented in the same manner as in Example 1. The results are shown in Table 1.

[0166] Example 1

Example 2

Example 3

Example 4

Comparative example 1

Comparative example 2

Thermoplastic

Resin group

Compound

Make up

(Parts by weight)

Copolymer ESI-30

36

36

36

36

36

36

Mg(OH) 2

61

61

61

61

61

61

Siloxane

3

3

3

3

3

3

Coupling agent

0.8

0.8

0.8

0.8

0.8

0.8

Initiator

0.03

0.03

0.03

0.03

0.03

0.03

Run

Slippery

Agent

(a)

1

(b)

1

(c)

1

(d)

1

(e)

...

Embodiment 5

[0209] 36 parts by weight of ethylene-styrene copolymer (ESI-30), 20 parts by weight of magnesium hydroxide (B-1-1) treated with lubricant, and 40 parts by weight of magnesium hydroxide (B-3-1) treated with silane Parts by weight, 3 parts by weight of the siloxane, 0.8 parts by weight of the coupling agent, 0.03 parts by weight of the initiator, and 1 part by weight of the lubricant (a), using a Banbury mixer at a resin temperature of 190°C Next, melt-kneading and pelletizing are performed to obtain thermoplastic resin composition pellets.

[0210] Using the obtained thermoplastic resin composition pellets, press molding is performed at 190°C to obtain a press molded product.

[0211] As the obtained molded product, its tensile elongation, tensile breaking strength, Maddens hardness, and embrittlement temperature were measured in accordance with the above-mentioned methods.

[0212] The results are shown in Table 2.

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PUM

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Abstract

The present invention provided a thermoplastic resin composition capable of readily peeling off a coated layer around electric wires by a knife, and preventing waste resin at the outlet of a dice of an extruder in coating of electric wires. This thermoplastic resin composition comprises (A) a substantially random interpolymer composed of 1-99 mol% polymer unit derived from an aromatic vinyl or vinylidene monomer and / or a hindered aliphatic or cyclic aliphatic vinyl or vinylidene monomer and 1-99 mol% polymer unit derived from at least one 2-20C [alpha]-olefin, (B) magnesium hydroxide and (C) a lubricant composed of at least one compound selected from aliphatic surfactants and fatty acid amides.

Description

Technical field [0001] The present invention relates to a thermoplastic resin and its molded products, more specifically, to a thermoplastic resin composition suitable for use as a cable sheath (sleeve or sleeve) material and for forming a wire coating layer, and particularly relates to α- Olefin·ethylene or vinylidene compound copolymer composition and molded products thereof. Background technique [0002] At present, in various molding applications, particularly applications requiring flame retardancy or insulation, such as cable sheathing materials and some insulating materials, thermoplastic resin compositions containing magnesium hydroxide are well known. In these applications, this thermoplastic resin composition is co-molded with metal. For example, the circumference of the wire is covered with a layer of thermoplastic resin composition. [0003] However, when the wire is processed with a cutter or the like, although it is desired to easily peel the thermoplastic resin com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/02C08L25/00C08F210/00C08F212/00C08K3/22C08K5/103C08K5/20C08L23/00H01B3/44
Inventor 上原完木村友彦守屋悟
Owner MITSUI CHEM INC