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Antistatic resin composition

A resin composition, anti-static technology, used in transportation and packaging, other chemical processes, thin material processing, etc., can solve the problems of loss of anti-static effect, rough surface, and reduced impact resistance, and achieve excellent permanent anti-static performance. , excellent appearance and mechanical properties

Inactive Publication Date: 2012-05-23
SANYO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Conventionally, methods for imparting antistatic properties to thermoplastic resins with high insulating properties include (1) methods of adding low-molecular-weight surfactants and (2) methods of adding metal fillers or conductive carbon black, etc., but will use (1) ) The molded article obtained by molding the resin composition obtained by the method exhibits the effect by bleed out of the low-molecular-weight surfactant, so in addition to losing the antistatic effect due to surface wiping, etc., there are also accompanying There is a disadvantage of surface roughness due to the passage of time. In addition, although the molded product obtained by the method (2) is excellent in the durability of the antistatic effect, it is necessary to add a large amount of metal filler, so there is a problem that the impact resistance decreases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0335] Production example 1 [production of acid-modified polyolefin (b1-1)]

[0336] In a stainless steel autoclave, add 95 parts of the thermal degradation method [the density at 23°C is 0.90g / cm 3 , MFR is 6.0g / 10min ethylene / propylene (random addition) copolymer (ethylene content is 2%) carry out thermal degradation under 410 ± 0.1 ℃, nitrogen environment] obtained low molecular weight ethylene / propylene random copolymerization material (Mn is 3,500, density is 0.89g / cm 3 , the amount of double bonds per 1,000 C is 7.1, the average number of double bonds per molecule is 1.8, and the content of polyolefin that can be modified at both ends is 90%), 10 parts of maleic anhydride, 30 Parts of xylene were melted at 200° C. under a nitrogen atmosphere (closed), and reacted at 200° C. for 20 hours.

[0337] Then, excess maleic anhydride and xylene were distilled off under reduced pressure at 200° C. for 3 hours to obtain an acid-modified polyolefin (b1-1). (b1-1) had an acid val...

manufacture example 2 2

[0338] Production example 2 [production of secondary modified polyolefin (b1-2)]

[0339] In a stainless steel autoclave, add 88 parts of (b1-1) and 12 parts of 12-aminododecanoic acid, melt it at 200°C under a nitrogen atmosphere, and heat it at 200°C for 3 hours at 1.3 The reaction is carried out under a reduced pressure of kPa or less to obtain a secondary modified polyolefin (b1-2). (b1-2) had an acid value of 24.0 and Mn of 4,200.

manufacture example 3

[0340] Production Example 3 [Production of modified polyolefin (b1-3) having hydroxyl groups at both ends of the polymer]

[0341] In a stainless steel autoclave, 95 parts of acid-modified polyolefin (b1-1) and 5 parts of ethanolamine were melted at 180° C. under a nitrogen atmosphere, and reacted at 180° C. for 2 hours. Then, excess ethanolamine was distilled off under reduced pressure at 180° C. for 2 hours to obtain a modified polyolefin (b1-3) having hydroxyl groups at both ends of the polymer. (b1-3) had a hydroxyl value of 26.0, an amine value of 0.01, and Mn of 3,900.

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Abstract

An antistatic resin composition is provided, from which a thermoplastic resin molded article having a sufficient permanent antistatic property without impairing an excellent mechanical property or a good appearance of the molded article, even in a case that the content of an antistatic agent contained in the composition is less than that in a conventional composition, is provided. The antistatic resin composition contains an antistatic agent (A) and a thermoplastic resin (B), in which a melt viscosity ratio of the thermoplastic resin (B) to the antistatic agent (A) at 220 DEG C. is 0.5-5 and an absolute value of a difference between solubility parameters (SPs) of the antistatic agent (A) and the thermoplastic resin (B) is 1.0-3.0. The antistatic resin molded article is obtained by molding the antistatic resin composition.

Description

technical field [0001] The present invention relates to an antistatic resin composition. More specifically, the present invention relates to an antistatic resin composition that imparts excellent permanent antistatic properties to a thermoplastic resin molded article without impairing the excellent mechanical properties or good appearance of the thermoplastic resin molded article. Background technique [0002] Conventionally, methods for imparting antistatic properties to thermoplastic resins with high insulating properties include (1) methods of adding low-molecular-weight surfactants and (2) methods of adding metal fillers or conductive carbon black, etc., but will use (1) ) The molded article obtained by molding the resin composition obtained by the method exhibits the effect by bleed out of the low-molecular-weight surfactant, so in addition to losing the antistatic effect due to surface wiping, etc., there are also accompanying There is a disadvantage of surface roughn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C09K3/16
CPCC09K3/16C08F290/04C08L51/04C08F255/06C08L2201/04C08K5/0075C08L71/126C08L101/12Y10T428/24802C08F222/06C08L23/26C08L71/02C08J3/22C08L101/00
Inventor 薮田尚士野田英利服部真范
Owner SANYO CHEM IND LTD
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