Abstract: A polycarbonate resin includes a repeating unit in its main chain of the following Chemical Formula 1: wherein the substituents are as defined in the specification.

Abstract: A polyamide resin is a polymer comprising (A) aliphatic diamine; and (B) dicarboxylic acid, wherein the (A) aliphatic diamine includes (a1) a first aliphatic diamine monomer including a C4, C6, C8 or C10 aliphatic diamine or a combination thereof, and (a2) a second aliphatic diamine monomer including a C12, C14, C16 or C18 aliphatic diamine or a combination thereof. The polymer can have good melt processability, low absorbency, and/or excellent brightness.

Abstract: A polyamide resin composition includes (A) a polyamide resin in an amount of about 30 to about 80% by weight, (B) inorganic filler in an amount of about 10 to about 60% by weight, (C) white pigment in an amount of about 5 to about 50% by weight; and (D) photostabilizer in an amount of about 0.05 to about 2 parts by weight and (E) inorganic fine particles in an amount of about 0.05 to about 3 parts by weight, wherein each of (D) and (E) is based on about 100 parts by weight of the polyamide resin (A). The polyamide resin composition can have good light reflectance and yellowing resistance.

Abstract: A high-rigidity electromagnetic shielding composition includes: (A) about 10 to about 34 wt % of polyamide resin including an aromatic moiety in the backbone structure; (B) about 65 to about 85 wt % of carbon fiber; and (C) about 1 to about 20 wt % of metallic filler. The composition can have high modulus, electromagnetic shielding effects, and high surface conductance, and can thus be used to replace frames, brackets and the like for electronic devices.

Abstract: A thermoplastic resin composition comprises (A) about 45 to about 95% by weight of an aromatic copolymer, (B) about 5 to about 55% by weight of a polycarbonate resin, (C) about 1 to about 30 parts by weight of a halogen-containing compound based on about 100 parts by weight of the aromatic copolymer (A) and the polycarbonate resin (B), and (D) about 0 to about 2 parts by weight of an antimony compound based on about 100 parts by weight of the aromatic copolymer (A) and the polycarbonate resin (B). The thermoplastic resin composition can have excellent flame retardancy, colorability and thermal stability.

Abstract: A plastic glazing includes a base layer; and a coating layer formed on one surface of the base layer, wherein the base layer includes polycarbonate including a biphenyl group. The biphenyl group is present in an amount of about 10 mol % to about 50 mol % based on the total amount of polycarbonate.

Abstract: A polyamide resin composition comprises (A) about 10 to about 70% by weight of a crystalline polyamide resin, (B) about 10 to about 70% by weight of an amorphous polyamide resin, (C) about 5 to about 30% by weight of an inorganic filler, and (D) about 10 to about 50% by weight of a white pigment. The polyamide resin composition can have good thin-wall moldability, light reflectance, yellowing resistance, impact strength and heat resistance.

Abstract: A flame retardant thermoplastic resin composition includes about 100 parts by weight of a base resin including an aromatic vinyl resin and a polyphenylene oxide resin; and about 0.1 to about 30 parts by weight of a polyphosphonate copolymer represented by Formula 1: In Formula 1, A and B are each independently a single bond, C1-C5 alkylene, C1-C5 alkylidene, C5-C6 cycloalkylidene, —S— or —SO2—, provided that A and B are not identical to each other; R5 and R6 are each independently substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C6-C20 aryl, or substituted or unsubstituted C6-C20 aryloxy; R1, R2, R3 and R4 are each independently substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C3-C6 cycloalkyl, substituted or unsubstituted C6-C12 aryl, or a halogen atom; a and b are each independently an integer from 0 to 4; and n and m are each independently an integer from about 1 to about 500.

Abstract: An optical film including a polymer including a repeating unit A including a repeating unit represented by the following Chemical Formulas 1 to 3, or a combination thereof; and a repeating unit B derived from a monomer having an unsaturated bond copolymerizable with the repeating unit A, wherein the optical film has a short wavelength dispersion of an in-plane phase-difference value (Re) (450 nm/550 nm) ranging from about 0.81 to about 1.20, and a long wavelength dispersion of an in-plane phase-difference value (Re) (650 nm/550 nm) ranging from about 0.90 to about 1.18: wherein, in Chemical Formulas 1 to 3, the variables R1 to R21 are defined herein.

Abstract: A thermoplastic resin composition includes a thermoplastic resin; a pearlescent pigment; and a pigment that is not the same as the pearlescent pigment, wherein the pearlescent pigment and pigment have da and db satisfying da<15 and db<15 in an L*a*b* colorimetric system, respectively.

Abstract: An artificial marble includes unsaturated polyester resin (A), compound including silica (B), and luminescent pigment (C). An artificial marble according to a second embodiment includes about 70 to about 95% by weight of a non-luminescent base material (I) comprising unsaturated polyester resin (A), compound including silica (B), and organic/inorganic pigment (C) and about 5 to about 30% by weight of a luminescent amorphous pattern part (II) comprising unsaturated polyester resin (A), compound including silica (B), and luminescent pigment (D). An artificial marble according to a third embodiment includes unsaturated polyester resin (A), compound including silica (B), and amorphous luminescent chip (C).

Abstract: An acrylate-aromatic vinyl-vinyl cyanide resin composition having thermochromic resistance at high temperatures is provided. The resin composition includes: (A) about 20 to about 50% by weight of acrylic graft copolymer; (B) about 20 to about 50% by weight of two types of aromatic vinyl-vinyl cyanide copolymers with different molecular weights; and (C) about 30 to about 50% by weight of alpha-methyl styrene terpolymer.

Abstract: Disclosed is a thermoplastic resin composition that includes (A) a polycarbonate resin; (B) a graft copolymer including an aromatic vinyl compound and a vinyl cyanide compound grafted on a conjugated diene-based rubbery polymer; and (C) a copolymer of an aromatic vinyl compound and a vinyl cyanide compound, wherein the copolymer (C) of an aromatic vinyl compound and a vinyl cyanide compound includes a repeating unit derived from the vinyl cyanide compound in an amount of about 18 wt % to about 22 wt %, based on the total amount of the copolymer (C). A molded product prepared using the thermoplastic resin composition is also provided.

Abstract: A television housing has a structure including a stainless steel (SUS) frame; and a plastic member in contact with at least one side of the stainless steel frame. The plastic member includes (A) a polycarbonate resin, (B) a rubber modified aromatic vinyl graft copolymer resin, and (C) a non-adhesive glass fiber. The plastic member can have excellent properties in terms of appearance, gloss, surface roughness, and stiffness. In addition, the plastic member can be highly dimensionally stable.

Abstract: Disclosed herein is a biphenyl polyphosphonate. The biphenyl polyphosphonate is represented by Formula 1: wherein R is hydrogen, substituted or unsubstituted C1-C5 alkyl, substituted or unsubstituted C2-C5 alkenyl, substituted or unsubstituted C5-C6 cycloalkyl, substituted or unsubstituted C5-C6 cycloalkenyl, substituted or unsubstituted C6-C20 aryl, or substituted or unsubstituted C6-C20 aryloxy, R1 and R2 are the same or different and are each independently substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C5-C6 cycloalkyl, substituted or unsubstituted C6-C12 aryl, or halogen, a and b are the same or different and are each independently an integer from about 0 to about 4, and n is an integer from about 4 to about 500.

Abstract: A supported catalyst for synthesizing multi-walled carbon nanotubes includes a supporting body and a metal catalyst including Fe, Co, and Mn in a mole ratio according to Equation (1): Fe:Co:Mn=1:x:y??(1) wherein 2.0?x?4.0 and 0.01?y?5.00. The supported catalyst can be prepared by dissolving the metal catalysts into a solvent to prepare an aqueous solution of the metal catalysts; dissolving supporting body materials into a solvent to prepare an aqueous solution of the supporting body material; mixing the aqueous solutions and heating the mixed solution at temperature of about 100° to about 800° C. under normal atmospheric pressure for about 10 to about 40 min. Multi-walled carbon nanotubes can be prepared by placing the supported catalyst in chemical vapor deposition (TCVD) equipment and feeding hydrocarbon gas and hydrogen gas at a temperature of about 650° to about 1,100° C. under normal atmospheric pressure.

Abstract: A CMP slurry composition includes metal oxide particles, a diisocyanate compound, and deionized water. The CMP slurry composition is capable of selectively controlling polishing speed of a wafer surface having a convex portion and a concave portion, such that primary polishing and secondary polishing can be performed rapidly while stopping polishing of the nitride layer upon the secondary polishing.

Abstract: A thermoplastic resin composition comprises (A) about 30 to about 50% by weight of a thermoplastic resin, and (B) about 50 to about 70% by weight of a spherical magnesium oxide, wherein the thermal diffusivity of the thermoplastic resin composition in the horizontal or vertical direction is about 0.065 to about 0.20 cm2/sec and the ratio of thermal diffusivity of the horizontal direction : vertical direction is about 1:0.5 to about 1:1. A thermoplastic resin composition according to a second embodiment comprises (A) about 30 to about 50% by weight of a thermoplastic resin, and (B) about 50 to about 70% by weight of a spherical magnesium oxide, wherein the spherical magnesium oxide is treated on its surface with a silane compound.

Abstract: A bracket for protecting the liquid crystal display (LCD) of a portable display device comprises (A) a polyamide resin, and (B) a carbon fiber, wherein the ratio of (A):(B) of the (A) polyamide resin and the (B) carbon fiber is about 20 to about 40 wt %: about 60 to about 80 wt %, and the (A) polyamide resin comprises (a1) an aromatic polyamide and (a2) an aliphatic polyamide including a C10 to C20 aliphatic group.

Abstract: A thermoplastic resin composition includes (A) a transparent rubber modified aromatic vinyl copolymer including (a1) a graft copolymer including a core of a rubber based polymer and a shell formed on a surface of the core by graft polymerization of alkyl ester monomer, unsaturated nitrile monomer, and aromatic vinyl monomer; and (a2) a non-graft copolymer including a unit derived from an alkyl ester monomer; and (B) a low molecular weight acrylic copolymer with a weight average molecular weight of about 1,000 to about 10,000 g/mol. The thermoplastic resin composition can have a melt flow index of about 13 to about 35 g/10 min, a haze of about 2 to about 5%, and a Notch Izod impact strength of about 11 to about 15 kgf·cm/cm.