KOREA KUMHO PETROCHEMICAL CO., LTD. Patent applications |
Patent application number | Title | Published |
20160046562 | Styrenated Phenol Compound and Method of Preparing the Same - Provided is a styrenated phenol compound represented by Formula 1 in which styrenated phenol and hydroxylamine bind to each other: | 02-18-2016 |
20150353360 | CATALYST COMPOSITION FOR THE SYNTHESIS OF MULTI-WALLED CARBON NANOTUBES - The present invention relates to a catalyst composition for the synthesis of multi-walled carbon nanotube having high apparent density in a manner of high yield. More particularly, this invention relates to a multi-component metal catalyst composition comprising i) main catalyst of Fe and Mo, ii) inactive support of Al and iii) optional co-catalyst at least one selected from Co, Ni, Ti, Mn, W, Sn or Cu. Further, the present invention affords multi-walled carbon nanotube having 5˜15 nm of fibrous diameter and 0.5˜4 μm bundle diameter. | 12-10-2015 |
20150148503 | NOVEL BIMETALLIC COBALT-ALUMINUM ADDUCT CATALYST SYSTEM FOR PREPARING HIGH TRANS-1,4-POLYBUTADIENE - The present invention relates to preparing high 1,4-trans-polybutadiene by polymerizing 1,3-butadiene or a butadiene derivative in a non-polar solvent in the presence of a catalyst system comprising a novel bimetallic cobalt-aluminum adduct, which makes it possible to prevent gel formation, control the molecular weight of the trans-polybutadiene and increase the trans content of the trans-polybutadiene. The catalyst system comprising the novel cobalt-aluminum adduct has a high oxidation state and structural stability, and the reactivity of the catalyst is controlled using novel activation systems comprising various allyloxy aluminum compounds. | 05-28-2015 |
20140200306 | TERMINAL MODIFIER FOR CONJUGATED DIENE POLYMERS - Disclosed is a terminal modifier for conjugated diene polymers. The terminal modifier has both at least two amine groups and at least one alkoxysilane group. A terminally modified conjugated diene polymer which is coupled at the terminus with the terminal modifier, and a polymer composition for use in tires, comprising the terminally modified, conjugated diene polymer are also provided. When applied to tire treads, the polymer composition comprising the terminally modified, conjugated diene polymer significantly increases the disperability and binding to rubber of silica, thereby greatly contributing to an improvement of the tire treads in dynamic properties including wet traction, rolling resistance, Mooney viscosity and processability. | 07-17-2014 |
20140088320 | ALKYLALKOXYSILANE COMPOUNDS CONTAINING ETHER GROUP AND DIALKYLAMINO GROUP AND PROCESS FOR PREPARING THE COMPOUNDS - The present invention relates to an alkylalkoxysilane compound of a novel structure which has an ether group and an dialkylamino group in an alkyl chain of the alkylalkoxysilane and thus has remarkably improved storage stability and hydrophilicity and a method for preparing same. | 03-27-2014 |
20130289209 | INTERFACIAL POLYMER FOR RUBBER-SILICA NETWORK - Disclosed is an interfacial polymer for a network used as a coupling agent in mixing of rubber-silica. More particularly, the interfacial polymer for a rubber-silica network is a block copolymer containing a copolymer of conjugated diene and vinyl aromatic monomers, in which when used as a coupling agent in the mixing of synthetic rubber and silica (an inorganic material), the polymer enhances silica dispersibility within the rubber, and improves compatibility and processability, resulting in considerable improvement in the dynamic property as well as the mechanical property of the rubber, and when used in a tire, etc., it enhances automobile braking performance and reduces rolling resistance. | 10-31-2013 |
20130289200 | NOVEL HYDROPHILIC CHAIN TRANSFER AGENT AND END-MODIFIED STYRENE-BUTADIENE COPOLYMER USING THEM - Disclosed are a novel chain transfer agent having a trichloromethyl functional group bonded at an end thereof, an end-modified styrene-butadiene copolymer prepared by using the chain transfer agent, and an organic-inorganic composite obtained by mixing the end-modified styrene-butadiene copolymer with silica. The disclosed end-modified styrene-butadiene copolymer has a high affinity with silica because its end is modified with a hydrophilic chain transfer agent. Thus, the organic-inorganic composite including the mixture of the copolymer with silica is useful as a material for the manufacture of rubber products such as a tire, a sole, a rubber hose, or a rubber belt. | 10-31-2013 |
20130209351 | Complex Oxide Catalyst of Bi/Mo/Fe for the Oxidative Dehydrogenation of 1-Butene to 1,3-Butadiene and Process Thereof - The present invention relates to a complex oxide catalyst of Bi/Mo/Fe and an oxidative dehydrogenation of 1-butene in the presence of a catalyst herein. A catalyst of the present invention is superior to the conventional Bi/Mo catalyst in thermal and mechanical stabilities, conversion and selectivity toward 1,3-butadiene, while showing a long-term catalytic activity. | 08-15-2013 |
20130207052 | METHOD FOR PREPARING CARBON NANO MATERIAL/POLYMER COMPOSITES - Disclosed is a method for preparing a carbon nanomaterial/polymer composite. More particularly, it relates to an improved method for preparing a carbon nanomaterial/polymer composite capable of solving a dust problem of a carbon nanomaterial powder and a layer separation problem due to large density difference between the carbon nanomaterial powder and a polymer pellet and providing superior physical properties of the composite, whereby an additive used to prepare the carbon nanomaterial/polymer composite is mixed with the carbon nanomaterial powder and prepared into a pellet, which is then mixed with the polymer pellet. | 08-15-2013 |
20130207051 | CARBON NANO-MATERIAL PELLETS AND A METHOD FOR PREPARING THE PELLETS FROM POWDER OF CARBON NANO-MATERIAL - Disclosed are a carbon nanomaterial pellet and a method for preparing same. More particularly, it relates to a carbon nanomaterial pellet having a specific size and a high apparent density prepared by a simple process using only a rotary tablet press without mixing a carbon nanomaterial powder with a solvent or an additive, which is capable of solving the powder dust problem occurring when preparing a polymer composite from a carbon nanomaterial in the form of powder, thus improving physical properties and remarkably reducing cost of packaging and transportation, and a method for preparing the carbon nanomaterial pellet from a carbon nanomaterial powder. | 08-15-2013 |
20130207026 | Highly Conductive Carbon Nanotube Having Bundle Moieties With Ultra-Low Bulk Density and Its Manufacturing Method - The present invention relates to a highly conductive carbon nanotube having bundle moieties with ultra low apparent density less than 0.01 g/cc. More specifically, this invention relates to a highly conductive carbon nanotube prepared by following preparation steps of i) preparing the sphere shape of metal catalyst by spray pyrolysis of catalytic metal precursor solution including low molecular weight polymer, ii) synthesizing carbon nanotube using carbon source and obtained metal catalyst according to thermal chemical vapor deposition method; and iii) obtaining a highly conductive carbon nanotube having bundle moieties with ultra-low bulk apparent density. | 08-15-2013 |
20130177852 | HYDROPHILIC PHOTOACID GENERATOR AND RESIST COMPOSITION COMPRISING SAME - Disclosed are a hydrophilic photoacid generator prepared by copolymerization of a first (meth)acrylic acid ester having a structure represented by the following Formula 1 or 2, with a polymerizable monomer selected from the group consisting of a second (meth)acrylic acid ester, an olefin-based compound and a mixture thereof, each of which contains a functional group selected from the group consisting of a hydroxyl group, a carboxyl group, a lactone group, a nitrile group and a halogen group: | 07-11-2013 |
20130171565 | ORGANIC ANTI REFLECTIVE LAYER COMPOSITION - Disclosed is an organic antireflective film composition which includes a monomer containing two or more thiol groups and a monomer containing two or more vinyl groups, as crosslinking agents. When the organic antireflective film composition is used, an antireflective film formed from the composition can be rapidly etched in an ultrafine pattern forming process, and the curing rate can be increased, while the etching rate is increased, without using an acid generator and a curing agent or by using the agents only in small amounts. | 07-04-2013 |
20130171561 | ADDITIVE FOR RESIST AND RESIST COMPOSITION COMPRISING SAME - A resist additive represented by Formula 1 below and a resist composition including the additive are disclosed. The resist additive improves hydrophobicity of the surface of the resist film to prevent materials from being leached in water during exposure of immersion lithography and is converted to have hydrophilicity by deprotection reaction during development. As a result, a micropattern of a resist film with excellent sensitivity and high resolution is formed. | 07-04-2013 |
20130171560 | ADDITIVE FOR RESIST AND RESIST COMPOSITION COMPRISING SAME - Provided are an additive for resist represented by the following formula (1), and a resist composition containing the additive. The additive according to the present invention can suppress leaching caused by water during an immersion lithographic process by increasing hydrophobicity of the surface of the resist film in the exposure at the time of applying the additive to a resist composition, and can form a fine resist pattern having excellent sensitivity and resolution at the time of applying the additive to a resist composition. | 07-04-2013 |
20130164674 | NOVEL ACRYL MONOMER, POLYMER AND RESIST COMPOSITION COMPRISING SAME - Disclosed are an acrylic monomer having a structure represented by formula (1), a polymer containing a repeating unit derived from the acrylic monomer, and a resist composition prepared by using the polymer, which exhibits excellent adhesiveness, storage stability, and enhanced line width roughness, exhibits excellent resolution in both C/H patterns and L/S patterns, has an excellent process window so that an excellent pattern profile can be obtained regardless of the type of the substrate, and exhibits improved contrast. | 06-27-2013 |
20130123395 | ASPHALT COMPOSITIONS MODIFIED BY STYRENIC BLOCK COPOLYMER AND VEGETABLE WAX - Disclosed is a modified asphalt composition including a styrenic block copolymer and a vegetable wax as modifier. With lower viscosity at high temperatures as compared to the asphalt composition modified only with the styrenic block copolymer, it can be manufactured and used at lower temperatures. Also, with higher ductility at low temperatures, it can minimize fatigue crack even in cold weathers. | 05-16-2013 |
20130090427 | END-MODIFIED DIENE COPOLYMER HAVING GOOD COMPATIBILITY WITH REINFORCING SILICA AND PREPARATION METHOD THEREOF - The present invention provides an end-modified diene copolymer having excellent compatibility with silica as a reinforcement material, and a preparation process thereof, in which the end-modified diene copolymer is prepared by preparing a living polymer of a conjugated diene monomer and/or a vinyl aromatic monomer, modifying the living polymer with a reactive organosiloxane compound, and then modifying the end of the living polymer, to which the organosiloxane compound has not been coupled, with an organosilane compound having various functional groups. When the end-modified diene copolymer is used as a rubber material in the manufacture of a silica tire, the dispersion of silica in the copolymer can be improved and the bonding strength between silica and the rubber can be significantly increased, thereby manufacturing a high-quality silica tire. | 04-11-2013 |
20130035503 | SULFONIUM COMPOUND, PHOTOACID GENERATOR, AND RESIST COMPOSITION - A sulfonium compound represented by the following formula (1), a photoacid generator containing the sulfonium compound, and a resist composition containing the photoacid generator are provided: | 02-07-2013 |
20120296059 | COPOLYMER FOR ORGANIC ANTIREFLECTIVE FILM, MONOMER, AND COMPOSITION COMPRISING THE COPOLYMER - Disclosed are a copolymer for organic antireflective films containing a repeating unit represented by the following formula (1), a monomer for the copolymer, and an organic antireflective film composition including the copolymer: | 11-22-2012 |
20120270982 | ANTI-OXIDANTS FOR RUBBER AND SYNTHETIC RUBBER WITH THEREOF - Disclosed are a novel anti-oxidant for rubber and a synthetic rubber including the same. The disclosed anti-oxidant contains a thio compound. The rubber including the anti-oxidant has excellent thermostability at a temperature of 100° C. or higher, and the anti-oxidant shows a low volatility due to its high molecular weight thus being applicable to manufacture environment-friendly rubber. | 10-25-2012 |
20120251952 | COPOLYMER FOR RESIST COMPRISING NOVEL ACRYL BASED MONOMER AND RESIN COMPOSITION FOR RESIST COMPRISING THE SAME - A resist resin composition includes 100 parts by weight of a copolymer represented by Formula 3 below; 0.5 to 1.5 parts by weight of a photoacid generator and 700 to 1,500 parts by weight of a solvent: | 10-04-2012 |
20120203030 | PHOTOACID GENERATOR, METHOD FOR PRODUCING THE SAME, AND RESIST COMPOSITION COMPRISING THE SAME - A photoacid generator represented by the following formula (1), a method for producing the photoacid generator, and a resist composition containing the photoacid generator are provided. | 08-09-2012 |
20120203024 | PHOTOACID GENERATOR, METHOD FOR PRODUCING THE SAME, AND RESIST COMPOSITION COMPRISING THE SAME - A photoacid generator represented by the following formula (1), a method for producing the photoacid generator, and a resist composition containing the photoacid generator are provided. | 08-09-2012 |
20120197044 | PRODUCTION METHOD FOR 4,4'-BIS(ALKYLAMINO) DIPHENYLAMINE - The present invention relates to a production method for 4,4′-bis(alkylamino)diphenylamine, and more specifically relates to a method in which 4,4′-dinitrodiphenylamine (4,4′-DNDPA) is produced by reacting urea with nitrobenzene in the presence of a polar organic solvent and a base catalyst, and then the 4,4′-bis(alkylamino)diphenylamine (4,4′-BAADA) is produced by subjecting the 4,4′-DNDPA and a ketone to hydrogenation in the presence of a hydrogenation catalyst. | 08-02-2012 |
20120189963 | WATER-SOLUBLE RESIN COMPOSITION AND METHOD OF FORMING FINE PATTERNS BY USING THE SAME - A water-soluble resin composition for forming fine patterns comprising water-soluble polymer represented by Chemical Formula 1 as below and the first water-soluble solvent, is coated and heated on a photoresist layer having at least one contact hole to reduce a size of the at least one contact hole. | 07-26-2012 |
20120172628 | NOVEL THIO COMPOUNDS AND PREPARING METHOD OF THE SAME - Provided are novel thio compounds and a method for preparing the same. More particularly, there is provided a novel thio compound prepared by reacting an alkylation product of p-cresol and dicyclopentadiene with mercaptan and paraformaldehyde. Unlike existing antioxidants such as 2,6-di-t-butyl-4-methylphenol (BHT) being harmful to the human body due to the high volatility, the novel thio compounds of the present invention, which have the low volatility because of their high molecular weight, give no harm to the human body. Further, with excellent performances, they are suitable to replace the existing antioxidants. | 07-05-2012 |
20120172606 | SULFONIUM COMPOUND, PHOTO-ACID GENERATOR, AND METHOD FOR MANUFACTURING THE SAME - A sulfonium compound represented by formula (1), a photo-acid generator, and a method for producing a sulfonium compound are provided: | 07-05-2012 |
20120165499 | POLYMER, METHOD FOR PRODUCING THE SAME, AND RESIST COMPOSITION CONTAINING THE SAME - Provided is a copolymer containing a repeating unit represented by the following formula (1): | 06-28-2012 |
20120165462 | Styrene-Butadiene Copolymer Highly Functionalized with Reactive Polyol and Manufacturing Method Thereof - Provided is a functional styrene-butadiene copolymer having superior silica affinity. The copolymer is prepared by radical polymerizing a styrene monomer, a butadiene monomer and a reactive polyol monomer in emulsion state in order to maximize the mixing effect when compounding with silica. When mixed with silica, the disclosed styrene-butadiene copolymer provides excellent wet traction and superior abrasion resistance, and is suitable to be used for an industrial material of snow tires, belts, hoses, etc. | 06-28-2012 |
20120164363 | Method for Preparing Styrene-Butadiene Copolymer Using Reactive Emulsifier and Styrene-Butadiene Copolymer Prepared By the Same - Provided is a method for preparing a styrene-butadiene copolymer having improved silica affinity through introduction of a novel reactive emulsifier. The styrene-butadiene copolymer prepared according to the disclosed method has superior affinity for thereby and thus has superior processability and tensile properties and remarkably improved dynamic properties. Therefore, when the styrene-butadiene copolymer according to the present invention is used as a tire tread material, it can greatly improve its physical properties. | 06-28-2012 |
20120157714 | METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE BY USING 4-NITROANILINE - Provided is a method of preparing 4,4′-dinitrodiphenylamine (4,4′-DNDPA) in high yield by reacting 4-nitroaniline with excess nitrobenzene via the NASH reaction, and a method of preparing 4,4′-bis(alkylamino)diphenylamine (4,4′BAADA) in high yield and purity by hydrogenating the resulting 4,4′-DNDPA with a ketone compound in the presence of hydrogen and hydrogenation catalyst. The disclosed process is simple, allows selective preparation of 4,4′-DNDPA without byproducts, and thus allows preparation of 4,4′-BAADA in high yield without a complicated purification procedure. | 06-21-2012 |
20120157713 | METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE WITH THE BASE CATALYST COMPLEX - Provided is a method for preparing 4,4′-dinitrodiphenylamine (4,4′-DNDPA) in high yield via the NASH reaction using a mixture of a bis-quaternary ammonium base and a base catalyst for the reaction of urea with nitrobenzene, and a method of preparing 4,4′-bis(alkylamino)diphenylamine (4,4′BAADA) in high yield and purity by hydrogenating the resulting 4,4′-DNDPA with a ketone in the presence of hydrogen and hydrogenation catalyst. The catalyst complex used in the present invention allows easy recovery, provides superior alkaline stability and is capable of reducing production cost. | 06-21-2012 |
20120077031 | CATALYST COMPOSITION FOR THE SYNTHESIS OF THIN MULTI-WALLED CARBON NANOTUBE - The present invention relates to a catalyst composition for the synthesis of thin multi-walled carbon nanotube(MWCNT). More particularly, this invention relates to a multi-component metal catalyst composition comprising i) main catalyst of Co and Al, ii) inactive support of Mg and iii) optional co-catalyst at least one selected from Ni, Cr, Mn, Mo, W, Pb, Ti, Sn, or Cu. Further, the present invention affords thin multi-walled carbon nanotube having 5˜20 nm of diameter and 100˜10,000 of aspect ratio in a high yield. | 03-29-2012 |
20120040186 | Process For Preparing Catalyst Composition For The Synthesis Of Carbon Nanotube With High Yields Using The Spray Pyrolysis Method - The present invention relates to a process for preparing catalyst composition for the synthesis of carbon nanotube with high yields using the spray pyrolysis method. More particularly, this invention relates to a process for preparing catalyst composition for the synthesis of carbon nanotube comprising the steps of i) dissolving multi-component metal precursors of catalyst composition in de-ionized water; ii) spraying obtained catalytic metal precursor solution into the high temperature reactor by gas atomization method; iii) forming the catalyst composition powder by pyrolysis of gas atomized material; and iv) obtaining the catalyst composition powder, wherein said catalyst composition comprises i) main catalyst selected from Fe or Co, ii) Al, iii) optional co-catalyst at least one selected from Ni, Cu, Sn, Mo, Cr, Mn, V, W, Ti, Si, Zr or Y, iv) inactive support of Mg. Further, the catalyst composition prepared by this invention has a very low apparent density of 0.01˜0.50 g/ml as well as the catalyst composition affords high production yield (1,000˜1,800%) of carbon nanotube. | 02-16-2012 |
20110272643 | ORGANIC ANTI-REFLECTIVE LAYER COMPOSITION CONTAINING RING-OPENED PHTHALIC ANHYDRIDE AND METHOD FOR PREPARATION THEREOF - A light absorbent for forming an organic anti-reflective layer, represented by the following formula 1 or formula 2, is provided: | 11-10-2011 |
20110183115 | POSITIVE TYPED PHOTOSENSITIVE COMPOSITION - Disclosed is a photosensitive resin composition, comprising 0.1 to 20 parts by weight of a polygonal oligomeric silsesquioxane derivative, and 5 to 30 parts by weight of a compound generating acid by light, based on 100 parts by weight of a polyamide derivative. | 07-28-2011 |
20110136956 | 1,4-CIS-POLYBUTADIENE FUNCTIONALIZED WITH ORGANOSULFUR COMPOUND FOR PREPARATION OF GOLF BALL CORE - Disclosed are 1,4-polybutadiene functionalized with an aromatic organosulfur compound, providing improved processability due to decreased Mooney viscosity and providing improved feel on hitting and flying performance due to decreased compression and increased restitution when used to prepare a golf ball core, and a composition for the preparation of a golf ball core including the same. | 06-09-2011 |
20110124882 | Method for Preparing N-Substituted Maleimides - The present invention relates to a method of preparing N-substituted maleimide in high purity and high yield, wherein, unlike a conventional method of preparing N-substituted maleimide after preparing N-substituted maleamic acid, an organic solvent, an acid catalyst, a dehydration co-catalyst and a stabilizer are added into a reactor without separately preparing N-substituted maleamic acid, and then a primary amine is added into the reactor to form an amine salt, maleic anhydride is added into the reactor, and the resulting mixture is subjected to a dehydration-cyclization reaction, wherein water produced during the reaction is azeotropically distilled with the organic solvent so as to effectively suppress formation of a maleimide polymer. Particularly, the invention simplifies the process, has high yield, minimizes side reactions, eliminates the introduction of expensive raw materials and the complicated treatment of the reaction solution and significantly shortens the time over which the raw materials and maleic anhydride are added. | 05-26-2011 |
20110105672 | ADHESIVES COMPOSITION COMPRISING MIXTURES OF MULTI-BLOCK COPOLYMERS - The present invention relates to an adhesive composition comprising a mixture of multi-block copolymers, in particular, an adhesive composition comprising a block copolymer represented by Formula 1, a hydrocarbon adhesive resin and a plasticizer. The adhesive composition according to the present invention can be easily processed due to its low melting point and shows improved adhesive properties such as loop tack, 180° peel strength and holding power. | 05-05-2011 |
20110098404 | FUNCTIONAL STYRENE-BUTADIENE COPOLYMER - A functional styrene-butadiene copolymer is disclosed. More specifically, the copolymer is prepared by radical polymerization of a styrene monomer, a butadiene monomer and an epoxy acrylate monomer in an emulsion state and ring-opening of the resultant styrene-butadiene-epoxy acrylate copolymer. When blended with silica, the disclosed copolymer provides excellent wet stopping performance and superior wear resistance. Therefore, it can be usefully applied for industrial materials including fuel-efficient tires, snow tires, belts, hoses, etc. | 04-28-2011 |
20110053084 | Photosensitive Compound and Photosensitive Composition Including the Same - Disclosed are a photosensitive compound and a method of manufacturing the same. The photosensitive is composed of a naphthoquinonediazide sulfonic ester compound having at least one naphthoquinonediazide sulfoxy group, and having either at least one carboxy group with 1 to 8 carbon atoms or at least one alkoxy group with 1 to 8 carbon atoms, in one molecule. | 03-03-2011 |
20110053081 | Positive Type Photosensitive Composition - Disclosed is a positive typed photosensitive composition including a polyamide derivative being represented by | 03-03-2011 |
20110053080 | Positive Typed Photosensitive Composition - Disclosed is a positive typed photosensitive composition including a polyamide derivative represented by the following Chemical Formula, and a heat-acid generator. | 03-03-2011 |
20110028652 | Synthetic styrene resin composition for environment-friendly window frame - Disclosed are a synthetic resin composition for use as building materials such as window frames, as well as a product manufactured using the same. More particularly, the synthetic resin composition comprises a tetrapolymer of acrylic rubber-styrene monomer-butadiene rubber-vinyl cyanide monomer and a styrene-vinyl cyanide copolymer having a high molecular weight and a high degree of dispersion. Unlike products manufactured using prior polyvinyl chloride (PVC), building material such as window frames manufactured using the synthetic resin composition are recyclable, and thus can contribute to a reduction in the generation of hormone-disrupting chemical dioxin, which is released in the burning thereof. Also, the resin composition can be manufactured into products having excellent properties of weather resistance and colorability without using environmental pollutants such as cadmium stearate or lead stearate, which are used as thermal stabilizers. | 02-03-2011 |
20110006266 | CATALYST FOR PREPARING CARBON NANOTUBES BY CONTROLLING ITS APPARENT DENSITY - The present invention relates to a catalyst for preparing a carbon nanotube having desired apparent density by controlling the adding amount of co-precipitating agent in the process of preparing a catalyst in order to obtain a catalyst having a minimized particle size. More specifically, this invention relates to a catalyst for preparing carbon nanotube having desired apparent density based upon the reverse-correlation between the amount of co-precipitating agent added in the process of preparing catalyst and the apparent density of catalyst. The carbon nanotube prepared by the catalyst having low apparent density shows excellent electrical conductivity and highly uniformed dispersion in the polymer/carbon nanotube composite. | 01-13-2011 |
20100240851 | MALEIMIDE-ALPHA-ALKYLSTYRENE-BASED TERPOLYMER WITH LOW MOLTEN VISCOSITY AND CONTINUOUS BULK PROCESS FOR PRODUCING IT - Disclosed are a maleimide-α-alkylstyrene-based, heat-resistant bulk terpolymer and a preparation process thereof. More specifically, disclosed are a bulk terpolymer, comprising 5-60 wt % of an N-substituted maleimide monomer, 10-70 wt % of an α-alkylstyrene monomer and 5-50 wt % of an unsaturated nitrile monomer, as well as a continuous bulk polymerization process for preparing the same. The disclosed bulk terpolymer has a weight-average molecular weight (Mw) of 70,000-300,000 and a glass transition temperature of 140-200° C., shows excellent high-temperature thermal stability and heat resistance and a remarkably low melt viscosity, and thus is excellent not only in processability, but also in productivity, processability, moldability and blendability, when it is blended with other resins. Also, the continuous bulk polymerization process is equipped with a devolatilizer and enables the bulk terpolymer to be produced at low cost and high efficiency. | 09-23-2010 |
20100113818 | Photoacid generator containing aromatic ring - An acid generator represented by the following formula (1) is provided: | 05-06-2010 |
20100075256 | Onium salt compound, polymer compound comprising the salt compound, chemically amplified resist composition comprising the polymer compound, and method for patterning using the composition - A compound represented by the following formula (1) is provided: | 03-25-2010 |
20100055408 | Organic anti-reflective layer composition containing ring-opened phthalic anhydride and method for preparation thereof - A light absorbent for forming an organic anti-reflective layer, represented by the following formula 1 or formula 2, is provided: | 03-04-2010 |
20090291390 | Acid generating agent for chemically amplified resist compositions - An acid generating agent represented by the following formula (1) or (2) is provided, which is included in chemically amplified resist compositions: | 11-26-2009 |
20090258321 | Light absorbent and organic antireflection coating composition containing the same - The present invention relates to a light absorbent for organic anti-reflection coating formation, and an organic anti-reflection film composition containing the same. The light absorbent for organic anti-reflection film formation according to the present invention is a compound of the following formula (1a), a compound of the following formula (1b), a mixture of compounds of the formulas (1a) and (1b), or a compound of formula (2): | 10-15-2009 |
20090030096 | METHOD OF PRODUCING EXPANDABLE POLYSTYRENE BEADS WHICH HAVE EXCELLENT HEAT INSULATION PROPERTIES - An expandable polystyrene bead production method, which is a two-step process, is disclosed. The method includes obtaining suspendable, homogenous micropellets from a mixed composition prepared by mixing graphite particles with a styrene-based resin and extruding the composition, and carrying out seed polymerization by suspending graphite-containing micropellets in water and adding a styrene-based monomer and an aromatic hydrocarbon having 6 to 10 carbon atoms, and impregnation by adding a blowing agent. The produced expandable polystyrene beads, which contain graphite particles, are considerably low in thermal conductivity. In addition, the expandable polystyrene beads exhibit a little change in the thermal conductivity over time due to the use of the graphite particles, so that the heat insulation property can be sustained for an extended period of time. | 01-29-2009 |
20080318167 | Copolymer and composition for organic and antireflective layer - The present invention provides an organic anti-reflection coating composition comprising a copolymer represented by the following Formula 1, a light absorbent, a thermal acid generating agent, and a curing agent: | 12-25-2008 |