A thermoplastic resin composition having good balance among impact resistance, flame retardancy, heat resistance and flowability all of which are required for thin molded articles high-dimensionally. The flame retardant resin composition comprises 100 parts by weight of a resin component comprising (A) a polycarbonate resin and (B) a polycarbonate-polydiorganosiloxane copolymer resin obtained by copolymerizing a dihydric phenol with a hydroxyaryl-terminated polydiorganosiloxane, (C) 3 to 35 parts by weight of an organic phosphorus-based flame retardant or 0.005 to 5 parts by weight of an organic metal salt-based flame retardant, (D) 0.1 to 30 parts by weight of a silicate mineral and (E) 0.1 to 3 parts by weight of a dripping inhibitor, and, if necessary, (F) 3 to 45 parts by weight of a styrene resin wherein the polydiorganosiloxane content of the component (B) in the composition is 0.2 to 0.6 wt %.

A thermoplastic resin composition having good balance among impact resistance, flame retardancy, heat resistance and flowability all of which are required for thin molded articles high-dimensionally. The flame retardant resin composition comprises 100 parts by weight of a resin component comprising (A) a polycarbonate resin and (B) a polycarbonate-polydiorganosiloxane copolymer resin obtained by copolymerizing a dihydric phenol with a hydroxyaryl-terminated polydiorganosiloxane, (C) 3 to 35 parts by weight of an organic phosphorus-based flame retardant or 0.005 to 5 parts by weight of an organic metal salt-based flame retardant, (D) 0.1 to 30 parts by weight of a silicate mineral and (E) 0.1 to 3 parts by weight of a dripping inhibitor, and, if necessary, (F) 3 to 45 parts by weight of a styrene resin wherein the polydiorganosiloxane content of the component (B) in the composition is 0.2 to 0.6 wt %.

Disclosed herein are methods and compositions of blended polycarbonate resins with improved flame resistance and impact strength. The resulting compositions can be used in the manufacture of articles while still retaining the advantageous physical properties of blended polycarbonate compositions with improved flame resistance and impact strength. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Disclosed herein are methods and compositions of blended polycarbonate resins with improved flame resistance and impact strength. The resulting compositions can be used in the manufacture of articles while still retaining the advantageous physical properties of blended polycarbonate compositions with improved flame resistance and impact strength. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

The present invention provides a polycarbonate composition containing hydroxy aluminum hydroxide which exhibits increased gloss level. This effect is seen in polycarbonate blend or blends of polycarbonate and polyesters. This additive is effective in increasing the gloss level of polymer or polymer blend with gloss levels lower than 80 at 20 degree incident angle.

The present invention provides a polycarbonate composition containing hydroxy aluminum hydroxide which exhibits increased gloss level. This effect is seen in polycarbonate blend or blends of polycarbonate and polyesters. This additive is effective in increasing the gloss level of polymer or polymer blend with gloss levels lower than 80 at 20 degree incident angle.

A method for producing an injection-molded article of a polylactic acid resin composition, including filling a melt-kneaded product of a polylactic acid resin composition containing a polylactic acid resin, a plasticizer containing a polyoxyalkylene group or an oxyalkylene group, and a mold releasing agent having a melting point of from 20° to 75° C. in an injection-molding machine to mold in a die, wherein the method is characterized in that the above-mentioned injection-molding machine comprises a cylinder at least a part of which has a set temperature of 200° C. or higher, that the die has a surface temperature of 85° C. or higher, and that the die has a surface roughness of 1.0 μm or less.

A method for producing an injection-molded article of a polylactic acid resin composition, including filling a melt-kneaded product of a polylactic acid resin composition containing a polylactic acid resin, a plasticizer containing a polyoxyalkylene group or an oxyalkylene group, and a mold releasing agent having a melting point of from 20° to 75° C. in an injection-molding machine to mold in a die, wherein the method is characterized in that the above-mentioned injection-molding machine comprises a cylinder at least a part of which has a set temperature of 200° C. or higher, that the die has a surface temperature of 85° C. or higher, and that the die has a surface roughness of 1.0 μm or less.

A method for producing an injection-molded article of a polylactic acid resin composition, including filling a melt-kneaded product of a polylactic acid resin composition containing a polylactic acid resin, a plasticizer containing a polyoxyalkylene group or an oxyalkylene group, and a mold releasing agent having a melting point of from 20° to 75° C. in an injection-molding machine to mold in a die, wherein the method is characterized in that the above-mentioned injection-molding machine comprises a cylinder at least a part of which has a set temperature of 200° C. or higher, that the die has a surface temperature of 85° C. or higher, and that the die has a surface roughness of 1.0 μm or less.

The invention concerns polymer compositions comprising 20-80 weight percent polycarbonate polymer, 15-40 weight percent filler and 4-20% flame retardant and articles comprising same.