AROMATIC POLYCARBONATE RESIN COMPOSITION AND MOLDED ARTICLE FORMED THEREFROM
First Claim
1. An aromatic polycarbonate resin composition, comprising:
- with respect to 100 parts by mass of a resin component comprising;
(A) 55 to 85 percent by mass of an aromatic polycarbonate resin (A) having a mass average molecular weight of 15,000 to 40,00; and
(B) 15 to 45 percent by mass of a (meth)acrylate copolymer (B) which has a mass average molecular weight of 5,000 to 30,000 and comprises(b1) an aromatic (meth)acrylate unit (b1), and(b2) a methyl (meth)acrylate unit (b2),(C) 1 to 20 parts by mass of an impact strength improver (C),wherein;
in the (meth)acrylate copolymer (B), a mass ratio (b1/b2) is 5 to 50/50 to 95; and
when the refractive index of the resin component at a wavelength of 589 nm is represented by nab, and the refractive index of the impact strength improver (C) at a wavelength of 589 nm is represented by nc, nab and nc satisfy formula (1);
−
0.01≦
nab−
nc≦
+0.01
(1),
1 Assignment
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Accused Products
Abstract
To provide an aromatic polycarbonate resin composition which has an impact resistance improved by blending of an impact strength improver and which also has an excellent transparency and a good surface hardness. The aromatic polycarbonate resin composition includes, with respect to 100 parts by mass of a resin component containing 55 to 85 percent by mass of an aromatic polycarbonate resin (A) having a mass average molecular weight of 15,000 to 40,000 and 15 to 45 percent by mass of a (meth)acrylate copolymer (B) which has a mass average molecular weight of 5,000 to 30,000 and which is composed of an aromatic (meth)acrylate unit (b1) and a methyl (meth)acrylate unit (b2) at a mass ratio (b1/b2) of 5 to 50/50 to 95, 1 to 20 parts by mass of an impact strength improver (C). A refractive index nab of the resin component at a wavelength of 589 nm and a refractive index nc of the impact strength improver (C) at a wavelength of 589 nm satisfy the following formula i).
−0.01≦nab−nc≦+0.01 Formula i)
-
Citations
13 Claims
-
1. An aromatic polycarbonate resin composition, comprising:
- with respect to 100 parts by mass of a resin component comprising;
(A) 55 to 85 percent by mass of an aromatic polycarbonate resin (A) having a mass average molecular weight of 15,000 to 40,00; and (B) 15 to 45 percent by mass of a (meth)acrylate copolymer (B) which has a mass average molecular weight of 5,000 to 30,000 and comprises (b1) an aromatic (meth)acrylate unit (b1), and (b2) a methyl (meth)acrylate unit (b2), (C) 1 to 20 parts by mass of an impact strength improver (C), wherein; in the (meth)acrylate copolymer (B), a mass ratio (b1/b2) is 5 to 50/50 to 95; and when the refractive index of the resin component at a wavelength of 589 nm is represented by nab, and the refractive index of the impact strength improver (C) at a wavelength of 589 nm is represented by nc, nab and nc satisfy formula (1);
−
0.01≦
nab−
nc≦
+0.01
(1), - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- with respect to 100 parts by mass of a resin component comprising;
Specification