Thermoplastic resin composition and formed article using the same
AssigneeIdemitsu Kosan Co., Ltd.
InventorsYoshihiko Horio, Hiroshi Kawato
Life of this patent
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Abstract
The present invention provides a thermoplastic resin composition characterized by comprising (A) a thermoplastic resin and (B) a white pigment in a mass ratio of 50:50 to 90:10 and further comprising (C) a black coloring material and a blue coloring material; and provides a formed article using the resin composition. The above thermoplastic resin composition is an improvement of the conventional technique for preventing the permeation of light from a thin part of the formed article while securing a satisfactory reflectance, and can markedly improve the light blocking effect of a thermoplastic resin composition, without the increase of the number of parts, the employment of a more complicated process, or the like.
Claims18
A thermoplastic resin composition, consisting of:
- (A) a polycarbonate;
- (B) a white pigment;
- (C) a black coloring material;
- (D) a blue coloring material;
- and
- (E) an organosiloxane comprising an alkoxy group;
- wherein:
- a mass ratio of component (A) to component (B) is from 50:50 to 90:10;
- component (C) and component (D) are present in a combined amount of 0.1 to 50 ppm by mass based on a total mass of component (A) and component (B);
- a mass ratio of component (C) to component (D) is from 30:70 to 70:30;
- and
- component (E) is present in an amount of 0.001 to 5 parts by mass based on 100 parts by mass of component (A) and component (B) together.
A thermoplastic resin composition, consisting of:
- (A) a polycarbonate;
- (B) a white pigment;
- (C) a black coloring material;
- (D) a blue coloring material;
- (E) an organosiloxane comprising an alkoxy group;
- (F) a hindered phenol or phosphite antioxidant;
- and
- (G) a fluororesin;
- wherein:
- a mass ratio of component (A) to component (B) is from 50:50 to 90:10;
- component (C) and component (D) are present in a combined amount of 0.1 to 50 ppm by mass based on a total mass of component (A) and component (B);
- a mass ratio of component (C) to component (D) is from 30:70 to 70:30;
- and
- component (E) is present in an amount of 0.001 to 5 parts by mass based on 100 parts by mass of component (A) and component (B) together.
A thermoplastic resin composition, consisting essentially of:
- (A) a thermoplastic resin comprising a polycarbonate;
- (B) a white pigment;
- (C) a black coloring material;
- (D) a blue coloring material;
- (E) an organosiloxane comprising an alkoxy group;
- (F) a hindered phenol or phosphite antioxidant;
- and
- (G) a fluororesin;
- wherein:
- a mass ratio of component (A) to component (B) is from 50:50 to 90:10;
- component (C) and component (D) are present in a combined amount of 0.1 to 50 ppm by mass based on a total mass of component (A) and component (B);
- a mass ratio of component (C) to component (D) is from 30:70 to 70:30;
- and
- component (E) is present in an amount of 0.001 to 5 parts by mass based on 100 parts by mass of component (A) and component (B) together.
Dependencies are inferred from the claim text.