Polycarbonate resin composition
AssigneeTeijin Limited
InventorYasunori Inazawa
Life of this patent
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Abstract
A resin composition comprising 1 to 20 parts by weight of (C) at least one styrene-based thermoplastic elastomer (component C) selected from the group consisting of a styrene-ethylene.propylene-styrene block copolymer (SEPS), a styrene-ethylene-butylene-styrene block copolymer (SEBS) and a styrene-butadiene-butylene-styrene block copolymer (SBBS) based on 100 parts by weight of the total of (A) a polycarbonate-based resin (component A) and (B) a polyolefin-based resin having a MFR at 230° C. under a load of 2.16 kg of not less than 40 g/10 min (component B). The resin composition is excellent in mechanical properties, chemical resistance, appearance and tape peeling resistance.
Claims18
A resin composition comprising:
- 1 to 20 parts by weight of (C) at least one styrene-based thermoplastic elastomer (component C) selected from the group consisting of a styrene-ethylene-propylene-styrene block copolymer (SEPS), a styrene-ethylene-butylene-styrene block copolymer (SEBS) and a styrene-butadiene-butylene-styrene block copolymer (SBBS),
- based on 100 parts by weight of the total of (A) a polycarbonate-based resin (component A) and (B) a polyolefin-based resin having a MFR at 230° C. under a load of 2.16 kg of not less than 40 g/10 min (component B),
- wherein the polyolefin-based resin (component B) includes a maleic anhydride-modified polypropylene resin having a MFR at 190° C. under a load of 2.16 kg of not less than 50 g/10 min.
A resin composition comprising:
- 1 to 20 parts by weight of (C) at least one styrene-based thermoplastic elastomer (component C) selected from the group consisting of a styrene-ethylene-propylene-styrene block copolymer (SEPS), a styrene-ethylene-butylene-styrene block copolymer (SEBS) and a styrene-butadiene-butylene-styrene block copolymer (SBBS), and
- 1 to 10 parts by weight of (D) a graft polymer (component D),
- based on 100 parts by weight of the total of (A) a polycarbonate-based resin (component A) and (B) a polyolefin-based resin having a MFR at 230° C. under a load of 2.16 kg of not less than 40 g/10 min (component B),
- wherein the graft polymer (component D) is a core-shell type graft polymer.
A method of improving the tape peeling resistance of a molded article comprising a polycarbonate-based resin (component A), a polyolefin-based resin (component B) and a styrene-based thermoplastic elastomer (component C),
- said method comprising:
- selecting at least one from the group consisting of a styrene-ethylene-propylene-styrene block copolymer (SEPS), a styrene-ethylene-butylene-styrene block copolymer (SEBS) and a styrene-butadiene-butylene-styrene block copolymer (SBBS) as the styrene-based thermoplastic elastomer (component C), and
- selecting a resin having a MFR at 230° C. under a load of 2.16 kg of not less than 40 g/10 min as the polyolefin-based resin (component B),
- wherein the polyolefin-based resin (component B) includes a maleic anhydride-modified polypropylene resin having a MFR at 190° C. under a load of 2.16 kg of not less than 50 g/10 min.
A method of improving the tape peeling resistance of a molded article comprising a polycarbonate-based resin (component A), a polyolefin-based resin (component B), a styrene-based thermoplastic elastomer (component C), and a graft polymer (component D),
- said method comprising:
- selecting at least one from the group consisting of a styrene-ethylene-propylene-styrene block copolymer (SEPS), a styrene-ethylene-butylene-styrene block copolymer (SEBS) and a styrene-butadiene-butylene-styrene block copolymer (SBBS) as the styrene-based thermoplastic elastomer (component C), and
- selecting a resin having a MFR at 230° C. under a load of 2.16 kg of not less than 40 g/10 min as the polyolefin-based resin (component B),
- wherein the graft polymer (component D) is a core-shell type graft polymer.
Dependencies are inferred from the claim text.