Thermoplastic resin composition and molded product using the same

Patent metadata

Field	Value
Publication number	US-9947433-B2
Application number	US-201114006798-A
Country	US
Kind code	B2
Filing date	Dec 14, 2011
Priority date	Mar 25, 2011
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A thermoplastic resin composition includes 0.1 to 20 parts by weight of a carbon black relative to 100 parts by weight of a thermoplastic resin, wherein the carbon black is dispersed in the thermoplastic resin composition to have a maximum particle diameter of not greater than 50 μm.

First claim

The invention claimed is:

1. A thermoplastic resin composition comprising 0.1 to 20 parts by weight of a carbon black having an arithmetic average of a primary particle diameter of 70 to 200 nm relative to 100 parts by weight of a thermoplastic resin, wherein
the thermoplastic resin is a liquid crystalline polyester,
the carbon black has a ratio (a1/a2) of (a1) DBP absorption amount (m/l 100g) to (a2) primary particle diameter (nm) of the carbon black that is 1.07 to 1.5 (m/l 100 g·nm),
the carbon black has a specific surface area of 10 to 40 (m 2 /g) as determined by BET low-temperature nitrogen adsorption method, and
the carbon black is dispersed in the thermoplastic resin composition to have a maximum diameter of an aggregate of not greater than 50 μm,
the liquid crystalline polyester has structural units (I), (II), (III), (IV) and (V), wherein
content of the structural unit (I) is 65 to 80 mol % relative to a total amount of the structural units (I), (II) and (III),
content of the structural unit (II) is 55 to 85 mol % relative to a total amount of the structural units (II) and (III), and
content of the structural unit (IV) is 50 to 95 mol % relative to a total amount of the structural units (IV) and (V)

2. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin is a liquid crystalline polyester that forms an anisotropic melt phase.

3. The thermoplastic resin composition according to claim 1 , further comprising 1 to 200 parts by weight of an inorganic filler relative to a total 100 parts by weight of the thermoplastic resin and the carbon black.

4. The thermoplastic resin composition according to claim 2 , further comprising 1 to 200 parts by weight of an inorganic filler relative to a total 100 parts by weight of the thermoplastic resin and the carbon black.

5. The thermoplastic resin composition according to claim 1 , molded into a molded product.

6. The thermoplastic resin composition according to claim 2 , molded into a molded product.

Assignees

• Fujino Shingo
• Hase Takayuki
• Matsubara Satoshi
• Toray Industries

Inventors

• Fujino Shingo
• Hase Takayuki
• Matsubara Satoshi

Classifications

• C08L67/03

  the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings · CPC title

• C09K19/3809

  Polyesters; Polyester derivatives, e.g. polyamides · CPC title

• C08K3/04 Primary

  Carbon · CPC title

• H01B3/421 Primary

  Polyesters · CPC title

• C08K2201/005

  Additives being defined by their particle size in general · CPC title