THERMOPLASTIC RESIN COMPOSITION AND RESIN MOLDED ARTICLE

• US 20100010141A1
• Filed: 04/03/2007
• Published: 01/14/2010
• Est. Priority Date: 04/13/2006
• Status: Active Grant

• Current Assignee: Matsumura Sangyo Co., Ltd., Mitsubishi Engineering-Plastics Corporation (Mitsubishi Chemical Group Corp.)
• Original Assignee: Matsumura Sangyo Co., Ltd., Mitsubishi Engineering-Plastics Corporation (Mitsubishi Chemical Group Corp.)
• Inventors: Nakamura, Makoto, Otsuka, Katsuhiro, Matsumura, Kazutoyo, Nakano, Hiroshi
• Granted Patent: US 8,178,608 B2
• Time in Patent Office: Days
• US Class Current: 524/451
• CPC Class Codes: C08K 3/346 Clay
• CPC Class Codes: C08K 5/49 Phosphorus-containing compounds C08K5/0091 takes precedence
• CPC Class Codes: C08L 21/00 Compositions of unspecified rubbers
• CPC Class Codes: C08L 2205/02 containing two or more polymers of the same C08L -group
• CPC Class Codes: C08L 2205/03 containing three or more polymers in a blend
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/18 Polyesters or polycarbonates according to C08L67/00 - C08L69/00; Derivatives thereof
• CPC Class Codes: C08L 51/04 grafted on to rubbers
• CPC Class Codes: C08L 67/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds C08L67/06 takes precedence
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• CPC Class Codes: C08L 77/00 Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 77/02 Polyamides derived from omega-amino carboxylic acids or from lactams thereof C08L77/10 takes precedence

Abstract

The present invention relates to a thermoplastic resin composition which comprises 100 parts by weight of a thermoplastic resin (component A) and 1 to 400 parts by weight of a granular inorganic filler (component B) comprising an inorganic filler having an average particle diameter of 0.01 to 100 μm and a water-soluble polyester resin binder, and having a bulk density of 0.4 to 1.5 g/mL; and a resin molded article obtained by molding the thermoplastic resin composition. The thermoplastic resin composition is improved in various properties such as extrusion moldability, rigidity, impact resistance, thermal stability and hue, and exhibits an excellent balance between these properties.

Claims

1. A thermoplastic resin composition comprising:

100 parts by weight of a thermoplastic resin (component A); and

1 to 400 parts by weight of a granular inorganic filler (component B) comprising an inorganic filler having an average particle diameter of 0.01 to 100 ˜ and

a water-soluble polyester resin binder, and having a bulk density of 0.4 to 1.5 g/mL.

2. A thermoplastic resin composition according to claim 1, wherein the granular inorganic filler (component B) is a granular silicate compound.

3. A thermoplastic resin composition according to claim 1, wherein the granular inorganic filler (component B) is a granular talc.

4. A thermoplastic resin composition according to claim 1, wherein the granular inorganic filler (component B) has a particle size in which a proportion of a 500 gm-mesh screen residue thereof is not less than 55% by weight.

5. A thermoplastic resin composition according to claim 1, wherein a content of the water-soluble polyester resin binder in the granular inorganic filler (component B) is 0. 1 to 3% by weight.

6. A thermoplastic resin composition according to claim 1, wherein the thermoplastic resin (component A) comprises at least one resin selected from the group consisting of an aromatic polycarbonate resin, a thermoplastic polyester resin and a polyamide resin in an amount of not less than 30 parts by weight on the basis of 100 parts by weight of the thermoplastic resin (component A).

7. A thermoplastic resin composition according to claim 6, wherein the thermoplastic resin (component A) comprises 50 to 85 parts by weight of the aromatic polycarbonate resin, and 50 to 15 parts by weight of the thermoplastic polyester resin and/or a styrene-based resin on the basis of 100 parts by weight of the thermoplastic resin (component A).

8. A thermoplastic resin composition according to claim 1, further comprising a rubber polymer (component C) in an amount of 1 to 40 parts by weight on the basis of 100 parts by weight of the thermoplastic resin (component A).

9. A thermoplastic resin composition according to claim 1, further comprising a phosphorus-based compound (component D) in an amount of 0.1 to 5 parts by weight on the basis of 100 parts by weight of the granular inorganic filler (component B).

10. A resin molded article produced by molding the thermoplastic resin composition as defined in claim 1.