Abstract:
The present invention relates to a method for preparing an imide substituted copolymer resin comprising the steps of: copolymerization by feeding a mixture of an aromatic vinyl monomer and a vinyl cyanide monomer, a mixture of an unsaturated dicarboxylic anhydride monomer and a solvent, an initiator and a chain transfer agent at once to a copolymerization reactor; and imide substitution by continuously feeding the resultant polymerization solution to an imide substitution reactor while continuously feeding a primary amine. The preparation method according to the present invention is capable of continuously preparing an imide substituted copolymer resin having superior heat resistance and excellent fluidity and improving mechanical property and compatibility with ABS resin by inhibiting formation of aromatic vinyl homopolymer.
Abstract:
Disclosed are a colored expandable polystyrene resin having high strength, a method for producing thereof, and an expandable molded product using the same. More specifically, the colored expandable polystyrene resin having high strength of the present invention is characterized in that it is produced by adding nanocalcium carbonate and a colored dye into styrene monomer.
Abstract:
The present invention relates to a process for preparing polymer latex resin powder, and particularly to a process for preparing polymer latex resin powder including coagulating polymer latex and aging the polymer latex. The process further includes introducing an emulsifier into polymer latex emulsion before coagulation. The polymer latex resin powder prepared by the present invention has 85 wt % or more of particles with diameter of 70 to 400 μm, each 10 wt % or less of fine powder with less than 70 μm and those with 400 μm or more, and it has superior bulk density and caking property.
Abstract:
The present invention relates to a flame retardant styrene-based resin composition with high impact property. The styrene-based resin composition of the present invention comprises 1-30 parts by weight of a flame retardant, 0.5-15 parts by weight of a flame retardant aid and 0.1-15 parts by weight of a styrene-containing graft copolymer per 100 parts by weight of a base resin comprising a rubber-modified styrene-based copolymer and offers high impact property and good rigidity and fluidity, without appearance problem under a variety of processing conditions.
Abstract:
The present invention relates to a process for preparing thermoplastic resin for extrusion sheets, and particularly to a process for preparing acrylonitrile-butadiene-styrene (ABS) thermoplastic transparent resin for extrusion sheets having superior impact resistance, chemical resistance, processability, whitening resistance, high temperature elongation, etc. and very superior transparency, by controlling a mixing ratio of a methacrylate alkylester compound or acrylate alkylester compound, an aromatic vinyl compound, and a vinylcyanide compound grafted on conjugated diene rubber latex of which an average particle diameter and gel contents (degree of crosslinking) are optimized to control a refractive index of the monomer mixture to be similar to that of the rubber latex, and optimizing the molecular weight.
Abstract:
The present invention relates to a halogen free flame retardant thermoplastic styrene resin composition. More particularly, the present invention relates to a flame retardant resin composition, comprising (A) a graft copolymer consisting of rubber modified styrenic resin, (B) a polycarbonate resin, (C) a phenol novolak resin, (D) a copolymer consisting of styrene, and (E) an aromatic phosphate. The resin composition of the present invention has a superior flame retardancy using a halogen free flame retardant and a little amount of polycarbonate resin.
Abstract:
The present invention provides an optical film and s retardation film characterized in that each of them includes: an acrylic resin; and 20-65 parts by weight of at least two graft copolymers containing a conjugated diene-based rubber, based on 100 parts by weight of the acrylic resin, wherein at least two of the graft copolymers have different particle sizes. The present invention also provides a production method therefore.
Abstract:
The present invention relates to a thermoplastic resin composition and a preparation method of the same, more precisely, a thermoplastic resin composition containing acrylate-styrene-acrylonitrile (ASA) graft copolymer resin, aromatic polycarbonate resin, aromatic vinyl compound and vinyl cyan compound copolymer resin and styrene-acrylonitrile graft maleic anhydride (SAN-g-MAN) to improve exterior physical properties such as scratch resistance, surface gloss, colorability, weather resistance, etc, and a preparation method of the same.
Abstract:
The present invention relates to an acrylonitrile (ASA) type thermoplastic resin composition with excellent weatherability and appearance properties, and more particularly, to an acrylate-styrene-acrylonitrile type thermoplastic resin composition comprising a) an acrylate-styrene-acrylonitrile graft copolymer; b) a butadienc-acrylonitrile mcthylmethacrylate graft copolymer; c) a copolymer of aromatic vinyl compound and vinylcyanide compound; and d) an alkyl acrylate copolymer, which has remarkably improved appearance properties such as scratch resistance, color (color stability) and gloss as well as excellent basic properties and weatherability.
Abstract:
The present invention relates to a method for preparing rubber latex. The method of the present invention is characterized in that hard polymer seed is fed into a polymerization reactor equipped with a condenser before the commencement of polymerization and that the condenser is operated from the start of the polymerization, so that the condensate containing the conjugated diene compound is fed into the polymerization reactor with the commencement of the polymerization. In accordance with the method for preparing rubber latex of the present invention, it is possible to prepare core-shell type rubber latex capable of maximizing surface grafting ratio of rubber latex without sacrificing uniformity of polymerization system and particle stabilization and prepare resin having superior impact resistance, coloring property and appearance property(luster), when applied to ABS resins.