Lg Chem, Ltd

Lg Chemical Co., Ltd.

Lg Chemical Ltd.

Lc Chem, Ltd.

Chan-Hong Lee

Yong-yeon Hwang

Sung-Ho Lee

Chang-Hun Han

Byoung-Il Kang

Keun-Hoon Yoo

Byung-Tae Yang

Ki-Young Nam

Dong-Hyun Ko

Yong-Jin Choe

Moo-Ho Hong

Sung-Shik Eom

Jae-Hui Choi

Dae-Chul Kim

O-Hak Kwon

Keun-hoon Yoo

Han-jong You

Seong-lyong Kim

Tae-Hak Kim

Dong-sung Kim

Yang-Hyun Shin

Joo-Byung Chai

Geon-Soo Kim

Jin-hyoung Lee

Joo-byung Chai

Nam-Jeong Lee

Dae-Woo Lee

Jae-Bum Seo

Young-Ho Choi

Beom-Seok Kim

Geon-soo Kim

Ki-young Nam

Tae-Bin Ahn

Jin-woo Yi

Byoung-II Kang

Sang-Seop Kim

Yoon-Ho Kim

Tae-woo Kim

Keon-Hoon Yoo

Jong-Kuk Choi

Su-Yeon Na

Dae-San Jung

Ji-Hyun Lee

Yu-sung Jung

Bong-keun Ahn

Jun-Tae Lee

Won-deok Han

Hyung-jin Kim

Sang-il Nam

Tae-gun Ahn

Kyung-sik Lim

Jae-hwan Jung

Young-shim Kim

Yong-Yeon Hwang

Jeong-Heon Ahn

Kyung-Sik Lim

Chnag-Mook Kim

Han-Jong You

Dong-Sung Kim

The present invention provides an optical film and a retardation film that each include an acryl resin, and 20 to 65 parts by weight of a graft copolymer including a conjugated diene rubber based on 100 parts by weight of the acryl resin, and an electronic device including the same.

Optical film and method of manufacturing the same

The present invention relates to an apparatus for producing alcohols from olefins, comprising: a hydroformylation reactor wherein aldehydes are produced from olefins; a catalyst/aldehydes separator; a hydrogenation reactor wherein the aldehydes are hydrogenated to produce alcohols; and a distillation column. The hydroformylation reactor is equipped with a distributor plate, which has a broad contact surface for providing sufficient reaction area for reactants such as olefins and synthesis gas, and allows the reaction mixture to circulate and mix sufficiently, which contribute to excellent efficiency in terms of production of aldehydes. In addition, the hydrogenation reactor suppresses sub-reactions to improve the production yield of alcohols.

Apparatus for producing alcohols from olefins

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.

Optical film and a production method therefor

The present invention relates to an optical film, comprising a copolymer that comprises (a) a (meth)acrylic monomer, (b) an aromatic vinyl monomer, (c) at least one monomer of an acid anhydride monomer and an unsaturated organic acid monomer, and (d) a vinylcyan monomer, a protection film for a polarizer, a polarizing plate fabricated therefrom, and a display device employing the same.

Optical film, protection film for polarizer, polarizing plate fabricated therefrom, and display device employing thereof

Disclosed is a method for preparing a thermoplastic resin with superior impact resistance, chemical resistance and processability as well as excellent gloss and whiteness. The method includes emulsion-polymerizing a conjugated diene compound monomer to prepare a rubber latex having an average particle diameter of 1,800 &#x212b; to 5,000 &#x212b;, a polymerization conversion ratio of at least 90% and a swelling index of 12 to 40, an average gel content of 70 to 95%, emulsion-polymerizing 45 to 75 parts by weight of the rubber latex with 17 to 40 parts by weight of an aromatic vinyl compound and 4 to 20 parts by weight of a vinyl cyanide compound to prepare a graft copolymer latex, and coagulating the graft copolymer latex with a coagulant at 60 to 80&#xb0; C., and aging the graft copolymer latex at 80 to 99&#xb0; C. to obtain a graft copolymer powder.

Method of preparing thermoplastic resin having superior gloss, impact strength and whiteness

The present invention relates to a graft copolymer for a transparent thermoplastic polyurethane resin prepared by graft copolymerization of (a) 50-85 weight % of rubber latex having a multi-layered structure composed of an inner layer and an outer layer comprising a conjugated diene monomer and an ethylenically unsaturated aromatic compound in which the refractive index of the inner layer is greater than that of the outer layer; and (b) 15-50 weight % of a C-Cvinyl monomer; a method for making same; and a thermoplastic polyurethane resin composition comprising same having excellent color properties, calendaring properties, low temperature impact strength and transparency.

Graft copolymer for transparent thermoplastic polyurethane resin, preparation method thereof, and polyurethane resin composition containing the same

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.

Flame retardant styrene-based resin composition with high impact property

The present invention relates to a method for preparing a graft rubber latex having a low residual monomer content, and more precisely, a method for preparing a graft rubber latex having a high rubber content, which is characterized by graft-copolymerization of a mixture of a rubber latex having a gel content of at least 95% and an average particle diameter of 2,500&#x2dc;5000 &#x212b;, a monomer mixture comprising one or more compounds selected from a group consisting of aromatic vinyl compound, vinyl cyan compound and acrylate compound, and small particle size latex produced by emulsion polymerization. The method of the present invention has the advantages of speedy processes with excellent latex stability and at the same time reducing residual monomer content in the latex upon completion of the polymerization, improving perceived quality of the product and increasing yield.

Method for preparing graft rubber latex having low residual monomer content

The present invention relates to a method for preparing a high molecular weight latex resin powder, and more precisely, a method for preparing a high molecular weight latex resin powder which comprises the steps of preparing a slurry by coagulating a high molecular weight latex; stabilizing the slurry; and aging the stabilized slurry, and is characterized by the direct addition of a colloidal modifier to the high molecular weight latex reactant during the preparation of the slurry. According to the present invention, the high molecular weight latex resin powder prepared by the method of the present invention has excellent particle size distribution, apparent specific gravity, caking property and thermo-stability, even with high solid content, compared with the conventional slow coagulation, and at the same time the method has an advantage of reducing energy costs and waste water generation.

Method for preparing high molecule latex resin powder

The present invention relates to a nanocomposite thermoplastic resin composition with flame resistance comprising a basic resin mixture, which comprises a rubber-modified styrene-containing graft copolymer, a thermoplastic polyamide resin and a styrene-containing copolymer, a compatibilizer, a melamine based flame retardant and an organic layered silicate. The nanocomposite thermoplastic resin composition of the present invention offers superior flame resistance without comprising a halogen based flame retardant.

Nanocomposite thermoplastic resin composition with flame resistance

The present invention relates to a styrenic thermoplastic resin composition, and more particularly to a styrenic thermoplastic resin composition comprising a non-halogen flame-retardant having superior flame-retarding properties and impact strength. The present invention provides a flame-retarding styrenic thermoplastic resin composition comprising a) 100 weight parts of a base resin comprising i) 10 to 50 weight parts of a rubber-modified styrene-containing graft copolymer, ii) 5 to 20 weight parts of phenol novolac resin, and iii) 20 to 70 weight parts of a styrene-containing copolymer; and b) 5 to 20 weight parts of an aromatic phosphate. In addition, the a) base resin may further comprise iv) 10 to 40 weight parts of a thermoplastic polyurethane resin.

Styrenic thermoplastic resin blend

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 methylmethacrylate 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.

Thermoplastic resin composition having improved external appearance and excellent weatherability

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.

Thermoplastic resin composition and method for preparing thereof

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Daejeon, South Korea

Chan-Hong Lee