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US 2004/0110899 A1Published application
Resin composition extruded article and anti-static sheet
OwnerNaoya Miara, Nobuyasu Suzuki +1inventors
InventorsNaoya Miara, Nobuyasu Suzuki, Masahiko Kawano
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Abstract
A resin composition has 60 to 85% by weight of a polystyrene resin, and 15 to 40% by weight of a polyether ester amide. The polystyrene resin is a copolymer comprising a styrene monomer and a (meth)acrylate monomer.
Claims21
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(Unchanged) a resin composition comprising:
- 60 to 85% by weight of a polystyrene resin, wherein said polystyrene resin is a copolymer comprising a styrene monomer and a (meth)acrylate monomer;
- and
- 15 to 40% by weight of a polyether ester amide,
- being characterized in that said resin composition has a melt viscosity of 2×103 to 8×104 (poises) at a shear rate of 10 (sec−1) at 200° C.
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(Unchanged) A resin composition comprising:
- 60 to 85% by weight of a polystyrene resin, wherein said polystyrene resin is a copolymer comprising a styrene monomer and a (meth)acrylate monomer, which has a rubber-like elastomer dispersed therein;
- and
- 15 to 40% by weight of a polyether ester amide,
- wherein said resin composition has a melt viscosity of 2×103 to 8×104 (poises) at a shear rate of 10 (sec−1) at 200° C.
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(Unchanged) An anti-static sheet comprising:
- a core layer (2), formed by dispersing a polyether ester amide in a thermoplastic resin, having an elastic modulus in tension of 900 MPa or more at ordinary temperature and having a volume resistivity of 1012 Ω·cm or less;
- and
- an outer layer (3) formed, on the surface of said core layer (2), from a material obtained by dispersing a polyether ester amide in a thermoplastic resin so that said outer layer (3) has a surface resistivity of 1010 Ω or less.
(Unchanged) An anti-static sheet comprising:
- a plurality of core layers (12) each comprising a thermoplastic resin;
- and
- an outer layer (13) comprising a thermoplastic resin containing therein an electrically conductive filler, characterized in that said outer layer (13) is formed so that said core layers (12) are disposed between said outer layer (13), and has a connection portion (13c) for connecting the adjacent core layers (12).
(Unchanged) An anti-static sheet comprising:
- a sheet base material comprising a polystyrene or ABS resin;
- and
- a layer formed on at least one surface of said sheet base material, said layer comprising 15 to 75 parts by mass of a polyether ester amide relative to 100 parts by mass of a polystyrene resin, wherein the difference in refractive index between said polystyrene resin and said polyether ester amide is less than 0.03,
- wherein said layer has a surface resistivity of 109 to 1012 Ω.
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(Unchanged) An anti-static sheet being characterized by:
- 15 to 75 parts by mass of a polyether ester amide relative to 100 parts by mass of a polystyrene resin;
- wherein the difference in refractive index between said polystyrene resin and said polyether ester amide is less than 0.03,
- wherein said anti-static sheet is subjected to heat treatment at 85° C. for 60 minutes to generate 100 ppm or less of a volatile component.
(Unchanged) An anti-static sheet being characterized by:
- 100 parts by mass of a polystyrene resin;
- 15 to 75 parts by mass of a polyether ester amide, wherein the difference in refractive index between said polystyrene resin and said polyether ester amide is less than 0.03;
- and
- 1 to 10 parts by mass of a graft polymer comprising epoxy-modified acryl, polystyrene, and polymethyl methacrylate (PMMA).
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Dependencies are inferred from the claim text.