Thermoplastic resin composition for profile extrusion

• US 5,783,620 A
• Filed: 02/18/1997
• Issued: 07/21/1998
• Est. Priority Date: 05/17/1995
• Status: Expired due to Term

• Current Assignee: Mitsubishi Engineering-Plastics Corporation (Mitsubishi Chemical Group Corp.)
• Original Assignee: Mitsubishi Engineering-Plastics Corporation (Mitsubishi Chemical Group Corp.)
• Inventors: Shimaoka, Gorou, Hamashima, Nobuyuki, Nakata, Michio
• Primary Examiner(s): BUTTNER, DAVID J
• Application Number:
  US08/802,407
• Time in Patent Office: 518 Days
• Field of Search: 264/209.1, 264/221, 264/169, 264/170, 525/67, 525/46, 525/148, 524/405, 524/413, 524/423, 524/432, 524/442, 524/445, 524/449, 524/451, 524/456, 524/504
• US Class Current: 524/405
• CPC Class Codes: B29C 48/022 characterised by the choice of material
• CPC Class Codes: B29C 48/11 comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
• CPC Class Codes: B29C 48/12 Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• CPC Class Codes: B29K 2069/00 Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2105/06 containing reinforcements, fillers or inserts
• CPC Class Codes: B29K 2105/126 Whiskers, i.e. reinforcement in the form of monocrystals
• CPC Class Codes: B29K 2105/16 Fillers
• CPC Class Codes: C08L 101/00 Compositions of unspecified macromolecular compounds
• CPC Class Codes: C08L 23/00 Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 23/04 Homopolymers or copolymers of ethene
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

A thermoplastic resin composition for profile extrusion, comprises: (A1) 50 to 99.5% by weight of a thermoplastic aromatic polycarbonate resin; (A2) 0 to 40% by weight of a thermoplastic resin other than the thermoplastic aromatic polycarbonate resin and an ethylene-based resin or a modified olefin-based resin; (B) 0.5 to 30% by weight of the ethylene-based resin or the modified olefin-based resin; and (C) 0 to 30% by weight of a filler.

Claims

1. In a method of forming a molded article by profile extrusion of a thermoplastic aromatic polycarbonate resin wherein said thermoplastic aromatic polycarbonate resin is extruded through a die to form said article, the improvement comprising using as said thermoplastic aromatic polycarbonate resin a thermoplastic resin composition comprising

(A1) 50 to 95% by weight of a thermoplastic aromatic polycarbonate resin;

(A2) 3 to 40% by weight of an acrylonitrile-(ethylenepropylene-diene terpolymer)-styrene resin (AES);

(B) 0.5 to 30% by weight of a polyethylene; and

(C) 0 to 30% by weight of a filler,

said polyethylene as the component (B) being prepared in the presence of a chromium catalyst,

said polyethylene having a melt index of 0.01 to 50 and a density of 0.88 to 0.97, and

said filler being at least one selected from the group consisting of glass fibers, carbon fibers, needle-like titanium oxide, potassium titanate whiskers, aluminum borate whiskers, zinc oxide whiskers, magnesium sulfate, calcium sulfate, wollastonite, clay, talc, mica, silicon carbide and silicon nitride.

2. The method of claim 1, wherein said thermoplastic resin composition comprises:

(A1) 50 to 90% by weight of a thermoplastic aromatic polycarbonate resin,

(A2) 3 to 40% by weight of an acrylonitrile-(ethylenepropylene-diene terpolymer)-styrene resin (AES);

(B) 0.5 to 30% by weight of polyethylene, and

(C) 5 to 30% by weight of a filler.

3. The method of claim 1, wherein said thermoplastic resin composition comprises:

(A1) 50 to 90% by weight of a thermoplastic aromatic polycarbonate resin,

(A2) 3 to 40% by weight of an acrylonitrile-(ethylenepropylene-diene terpolymer)-styrene resin (AES);

(B) 2 to 30% by weight of polyethylene, and

(C) 5 to 30% by weight of a filler.

4. In a method of forming a molded article by profile extrusion of a thermoplastic aromatic polycarbonate resin wherein said thermoplastic aromatic polycarbonate resin is extruded through a die to form said article, the improvement comprising using as said thermoplastic aromatic polycarbonate resin a thermoplastic resin composition comprising

(A1) 50 to 95% by weight of a thermoplastic aromatic polycarbonate resin;

(A2) 3 to 40% by weight of an acrylonitrile-(ethylenepropylene-diene terpolymer)-styrene resin (AES);

(B) 0.5 to 30% by weight of a polyethylene; and

(C) 0 to 30% by weight of a filler.

5. The method of claim 4, wherein said polyethylene as the component (B) is prepared in the presence of a chromium catalyst.

6. The method of claim 4, wherein said polyethylene has a melt index of 0.01 to 50 and a density of 0.88 to 0.97.

7. The method of claim 4, wherein said filler is at least one selected from the group consisting of glass fibers, carbon fibers, needle-like titanium oxide, potassium titanate whiskers, aluminum borate whiskers, zinc oxide whiskers, magnesium sulfate, calcium sulfate, wollastonite, clay, talc, mica, silicon carbide and silicon nitride.

8. The method of claim 4, wherein said thermoplastic resin composition comprises:

(A1) 50 to 90% by weight of a thermoplastic aromatic polycarbonate resin,

(A2) 3 to 40% by weight of an acrylonitrile-(ethylenepropylene-diene terpolymer)-styrene resin (AES);

(B) 0.5 to 30% by weight of polyethylene, and

(C) 5 to 30% by weight of a filler.

9. The method of claim 4, wherein said thermoplastic resin composition comprises:

(A1) 50 to 90% by weight of a thermoplastic aromatic polycarbonate resin,

(A2) 3 to 40% by weight of an acrylonitrile-(ethylenepropylene-diene terpolymer)-styrene resin (AES);

(B) 2 to 30% by weight of polyethylene, and

(C) 5 to 30% by weight of a filler.