Abstract:
Disclosed are a transparent resin composition, which may be used in medical products and food storage containers, having superior chemical resistance and transparency, a method of preparing the same and a molded article manufactured therefrom. More particularly, disclosed are a thermoplastic transparent resin composition having superior chemical resistance and transparency, which comprises (A) a graft copolymer in which a) a conjugated diene rubber latex is graft copolymerized with b) a methacrylate alkyl ester compound or an acrylate alkyl ester compound, c) an aromatic vinyl compound, and d) a vinyl cyano compound; (B) a copolymerized resin in which i) a methacrylate alkyl ester compound or an acrylate alkyl ester compound, ii) an aromatic vinyl compound and iii) a vinyl cyano compound are copolymerized; and (C) a polyether-amide block copolymer, a method of preparing the same, and a molded article manufactured therefrom.
Abstract:
According to the present invention, a resin composition for a solar-cell encapsulating material includes an ethylene·±-olefin copolymer of which an MFR measured based on ASTM D123 8 under conditions of 190°C and a load of 2.16 kg is equal to or less than 10 g/10 minutes, a silane coupling agent, and a hindered amine-based photostabilizer. pH of the hindered amine-based photostabilizer, which is measured by using the following measuring method is equal to or less than 9.0. In the measuring method, the pH is measured by using a potential difference measuring device and by using a solution which contains 10 g of acetone, 1 g of water, and 0.01 g of the hindered amine-based photostabilizer, as a sample.
Abstract:
A resin composition that is transparent and excellent in weather resistance and heat resistance, and a molded article thereof are provided. According to the present invention, a transparent and highly heat-resistant resin composition, comprising: an aromatic vinyl-(meth) acrylic acid ester-unsaturated dicarboxylic acid anhydride copolymer (A); and an ultraviolet absorbing agent (B); wherein an amount of a residual unsaturated dicarboxylic acid anhydride monomer contained in the copolymer (A) is 100 ppm or less, and a content of the ultraviolet absorbing agent (B) with respect to a total amount of (A) and (B) is 0.03 to 1.0 mass%, is provided. The composition may further comprise a methacrylic resin (C) in addition to (A) and (B).
Abstract:
Disclosed is a semi-aromatic polyamide resin composition including 100 parts by mass of a semi-aromatic polyamide (A), 20 to 110 parts by mass of a fibrous reinforcing material (B) and 0.1 to 5 parts by mass of an azine dye (C), wherein the semi-aromatic polyamide (A) includes as the constituent components thereof an aromatic dicarboxylic acid component, an aliphatic diamine component and a monocarboxylic acid component, and has a melting point of 300°C or higher; and the monocarboxylic acid component constituting the semi-aromatic polyamide (A) is an aliphatic monocarboxylic acid having a molecular weight of 200 or more.
Abstract:
This invention provides a curable composition, which comprises a RTV silicone and an uncrosslinked or partially crosslinked rubber and/or elastomer providing initial strength to the composition, wherein the ratio of the silicone to the rubber and/or elastomer ranges from 1:2 to 15:1 by weight. The curable composition has improved handling and application properties in addition to good thermal conductive performance, UV and thermal aging performance, electrical insulation performance, and adhesive performance.
Abstract:
Disclosed is a flame retardant resin composition containing a base resin containing a polyolefin based compound, a silicone based compound, a fatty acid metal salt, a flame retardant agent consisting of at least one kind selected from the group consisting of calcium carbonate particles and silicate compound particles, a hindered phenol based compound, and a hindered amine based compound. In the composition, the silicone based compound is blended at a ratio of 0.1 part by mass or more and 10 parts by mass or less relative to 100 parts by mass of the base resin, the fatty acid metal salt is blended at a ratio of 0.1 part by mass or more and 20 parts by mass or less relative to 100 parts by mass of the base resin, the flame retardant agent is blended at a ratio of 5 parts by mass or more and 200 parts by mass or less relative to 100 parts by mass of the base resin, the hindered phenol based compound is blended at a ratio of 0.05 part by mass or more and 10 parts by mass or less relative to 100 parts by mass of the base resin, and the hindered amine based compound is blended at a ratio of 0.05 part by mass or more and 10 parts by mass or less relative to 100 parts by mass of the base resin. The hindered amine based compound has a monovalent group represented by the following formula (1) or the like. (in the formula (1), R 1 represents an alkyl group or alkoxy group having 1 to 30 carbon atoms, and R 2 to R 5 each independently represent an alkyl group having 1 to 6 carbon atoms).
Abstract:
Provided is a rubber composition that has better weather resistance than conventional rubber compositions and can inhibit surface discoloration of a rubber article. The rubber composition contains at least one rubber component selected from natural rubber and diene-based synthetic rubbers and, blended therewith, at least one amine compound represented by formula (I) shown below. In formula (I), R 1 and R 2 each represent, independently of one another, an alkyl group having a carbon number of 1-10, an aralkyl group, or a phenyl group, and A represents an alkylene group having a carbon number of 6-30 that may include an interposed phenylene group.
Abstract:
The present invention discloses a biodegradable polyester composition, wherein based on a total weight of the biodegradable polyester composition, a weight content of a cyclic ester compound having a structure shown as formula (I) is 100ppm-950ppm;
In the present invention, by adding the the cyclic ester compound into the composition and controlling the content of the cyclic ester compound in a range of 100ppm-950ppm, an anti-thermal oxidative aging property of the biodegradable polyester composition is greatly enhanced. In addition, after being digested with 95% ethanol at 40°C for 240 hours, a film prepared by blow molding or a part prepared by injection molding has little precipitate separating out of the surface and has an excellent surface appearance property.
Abstract:
The present invention relates to a copolycarbonate and a composition comprising the same. The copolycarbonates according to the present invention has a structure in which a specific siloxane compound is introduced in a main chain of the polycarbonate, and has small difference between an impact strength at room temperature and an impact strength at low-temperature and thereby exhibits an excellent impact resistance.
Abstract:
The present invention relates to a copolycarbonate and a composition comprising the same, and more specifically to a technique for improving flame retardance and chemical resistance while maintaining inherent impact strength and melt index of the copolycarbonate, by comprising a branched repeating unit in the copolycarbonate structure.