| SAMSUNG FINE CHEMICALS CO., LTD Patent applications |
| Patent application number | Title | Published |
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| 20120114544 | ORGANIC CHLOROHYDROSILANE AND METHOD FOR PREPARING THEM - Provided is an organic chlorohydrosilane, a useful starting material for preparing silicon polymers and a method for preparing the same. More particularly, the present invention enables the synthesis of various novel organic chlorohydrosilanes in high yield by an exchange reaction between an Si—H bond of a chlorosilane which can be obtained in an inexpensive and easy manner and an Si—Cl bond of an another organic chlorosilane using a quaternary organic phosphonium salt compound as a catalyst. Since the catalyst can be recovered after its use and reused, the present invention is very economical and thus effective for mass-producing silicon raw materials. | 05-10-2012 |
| 20120095183 | METHODS OF PREPARING WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN AND WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN COMPOUND WITH CONSTANT MELT VISCOSITY - A method of preparing a wholly aromatic liquid crystalline polyester resin and a method of preparing a wholly aromatic liquid crystalline polyester resin compound. The method of preparing the wholly aromatic liquid crystalline polyester resin includes condensation poly-merizing raw 1 monomers including aromatic hydroxy carboxylic acid and a mixture of aromatic diol and aromatic dicarboxylic acid in a predetermined molar ratio. In addition, the method of preparing the wholly aromatic liquid crystalline polyester resin compound includes the method of preparing the wholly aromatic liquid crystalline polyester resin | 04-19-2012 |
| 20120037848 | Wholly Aromatic Liquid Crystalline Polyester Resin Compound Having Enhanced Releasing Property And Method Of Preparing The Same - A wholly aromatic liquid crystalline polyester resin compound and a method of preparing the same. The wholly aromatic liquid crystalline polyester resin compound includes at least one of a polyethylene-based resin and a polypropylene-based resin as an additive. The method of preparing the wholly aromatic liquid crystalline polyester resin compound includes adding at least one of a polyethylene-based resin and a polypropylene-based resin as an additive. | 02-16-2012 |
| 20120028182 | TONER HAVING CORE-SHELL STRUCTURE AND METHOD OF PREPARING THE SAME - A toner having a core-shell structure and a method of preparing the same. Since a shell includes a crosslinked resin, a toner preventing hot offsets and having excellent charge stability is prepared. | 02-02-2012 |
| 20120022202 | WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN COMPOUND WITH ENHANCED FLUIDITY AND METHOD OF PREPARING THE SAME - Provided are a wholly aromatic liquid crystalline polyester resin compound and a method of preparing the same. The wholly aromatic liquid crystalline polyester resin compound comprises a first wholly aromatic liquid crystalline polyester resin with a low melting point, a second wholly aromatic liquid crystalline polyester resin with a high melting point, and an additive, wherein the amount of the first wholly aromatic liquid crystalline polyester resin is 5 to 10 parts by weight with respect to 100 parts by weight of the second wholly aromatic liquid crystalline polyester resin. | 01-26-2012 |
| 20120006233 | ADMIXTURE FOR CEMENT MORTAR HAVING CRACK RESISTANCE AND CEMENT MORTAR INCLUDING THE SAME - An admixture for a cement mortar and a cement mortar including the same. The admixture includes at least one of hydroxyethylmethyl cellulose having a degree of substitution (DS) of a methyl group in a range from 1.6 to 2.0 and hydroxypropylmethyl cellulose having a molar substitution MS of a hydroxypropyl group in a range from 0.4 to 1.0. | 01-12-2012 |
| 20110282080 | METHOD OF PREPARING DICHLOROPROPANOL USING GLYCEROL WITH IMPROVED SELECTIVITY FOR DICHLOROPROPANOL - A method of preparing dichloropropanol using glycerol. The method includes: chlorination of glycerol including a plurality of chlorination reaction stages using a catalyst; and a water-removing stage performed between the reaction stages, independently of the reaction stages. | 11-17-2011 |
| 20110269068 | METHOD OF PREPARING TONER HAVING NARROW PARTICLE SIZE DISTRIBUTION - According to preparing toner by emulsion aggregation, viscosity of dispersions is controlled during an initial reaction by using a cellulose derivative and/or a cyclodextrin derivative so that a particle diameter distribution of the toner is narrowed and environmental problems caused by the use of the toner may be reduced. | 11-03-2011 |
| 20110269067 | METHOD OF PREPARING TONER HAVING NARROW PARTICLE SIZE DISTRIBUTION - According to a method of preparing a toner by emulsion aggregation, viscosity of dispersions is controlled during an initial reaction by using an abietic acid so that a particle diameter distribution of the toner is narrowed. | 11-03-2011 |
| 20110236701 | THERMOSETTING RESIN, COMPOSITION INCLUDING THE SAME, AND PRINTED BOARD FABRICATED USING THE SAME - A thermosetting resin including at least one repeating unit represented by the following Chemical Formula 1: | 09-29-2011 |
| 20110232944 | LIQUID CRYSTALLINE THERMOSET OLIGOMER OR POLYMER AND THERMOSETTING COMPOSITION AND SUBSTRATE INCLUDING THE SAME - A liquid crystalline thermoset oligomer or polymer including a structural unit of Chemical Formulae 1 and 2; and a functional group of Chemical Formula A, | 09-29-2011 |
| 20110159424 | METHOD OF FORMING TONER IMAGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS CAPABLE OF REALIZING WIDE COLOR GAMUT - Provided are a method of forming a toner image and an electrophotographic image forming apparatus including a toner. The method of forming a toner image is performed using a first toner having a yellow color and color coordinate values of a lightness (L) ranging from 91 to 94, a redness (a) ranging from −11 to −9, and a yellowness (b) ranging from 77 to 82; a second toner having a magenta color and color coordinate values of a lightness (L) ranging from 56 to 61, a redness (a) ranging from 56 to 61, and a yellowness (b) ranging from −7 to −5; and a third toner having a cyan color and color coordinate values of a lightness (L) ranging from 58 to 62, a redness (a) ranging from −33 to −30, and a yellowness (b) ranging from −42 to −37. | 06-30-2011 |
| 20110116841 | TONER HAVING MULTIPLE INFLECTION POINTS ON STORAGE MODULUS CURVE WITH RESPECT TO TEMPERATURE AND METHOD OF PREPARING THE SAME - Provided are a toner and a method of preparing the same. The toner includes a binder resin, a coloring agent, and at least one additive, and a storage modulus curve of the toner with respect to temperature has multiple inflection points. The toner may be used in an electrophotographic image forming apparatus. | 05-19-2011 |
| 20110105777 | SILYL SUBSTITUTED 1,4-DISILACYCLOHEXANE DERIVATIVES AND PREPARATION METHOD THEREOF - The present invention relates to novel 1,4-disilacyclohexane derivatives and a preparation method thereof. More particularly, the invention provides a method for preparing 1,4-disilacyclohexane derivatives with a hexagonal ring structure at high yield through double silylation of an organosilane compound and a vinyl silane compound having an unsaturated double bond using quaternary organophosphonium salts as a catalyst. According to the present invention, tris(silyl)ethanes having three silyl groups in one molecule can be prepared at the same time and the catalyst can be recovered after reaction. Thus, the method is economical and enables mass-production of 1,4-disilacyclohexane derivatives and tris(silyl)ethanes which are precursors of organic-inorganic hybrid materials. | 05-05-2011 |
| 20110077420 | PRODUCTION METHOD FOR LINEAR AND CYCLIC TRISILAALKANE - The present invention relates to a preparation method for a linear or cyclic trisilaalkane which is a substance useful in the preparation of polycarbosilane and silicon carbide precursors. Linear or cyclic trisilaalkane and organic trichlorosilane derivatives can be synthesized simultaneously and in high yield by reacting bis(chlorosily)methane having a Si—H bond, either alone or together with an organic chloride, using a quaternary organic phosphonium salt compound as a catalyst. Further, since the catalyst can be recovered after use, the present invention is very economical and is thus effective for mass-producing precursors for organic/inorganic hybrid substances. | 03-31-2011 |
| 20110043920 | OPTICAL SHEET WITH HIGH CONTRAST RATIO AND FILTER COMPRISING THE SAME, AND IMAGE DISPLAYING DEVICE INCLUDING THE SHEET OR THE FILTER - An optical sheet for enhancing contrast ratio, a filter including the same, and an image display device including the optical sheet or the filter. The optical sheet includes: a light transmission portion including a plurality of grooves disposed at predetermined intervals in an end portion of the light transmission portion on one side; and a plurality of external light absorption portions each disposed in said each groove and comprising a composition completely or incompletely filling the groove, the composition comprising a light absorbable material, wherein at least one of the grooves comprises a recess portion formed on the top of the external light absorption portion. When used in the image display device, the optical sheet and the filter including the optical sheet can achieve a relatively high light transmission rate, prevent formation of ghost images, prevent the occurrence of the Moire phenomenon, and achieve a relatively high contrast ratio to maintain high resolution. | 02-24-2011 |
| 20110033207 | TONER USING RESIN BEING INSOLUBLE IN ORGANIC SOLVENTS AND METHOD FOR PREPARING THE SAME - A toner using an organic solvent-insoluble resin and a method of preparing the same. The toner includes: a binder resin that comprises an organic solvent-insoluble resin and an acid group-containing resin, a coloring agent, and at least one additive, wherein the organic solvent-insoluble resin is a crosslinked polyester resin or a cyclic olefin co-polymer (COC) resin, and the ratio of the organic solvent-insoluble resin to the acid group-containing resin is in the range of 5:95 to 40:60 on a weight basis. The toner can be applied to an electrophotographic imaging apparatus. | 02-10-2011 |
| 20110028643 | WAX-RESIN COMPATIBILIZER, WAX-RESIN DISPERSION INCLUDING THE WAX-RESIN COMPATIBILIZER, AND METHODS OF PREPARING THE SAME - A wax-resin compatibilizer, a wax-resin dispersion, and methods of preparing the wax-resin dispersion. The wax-resin dispersion includes a wax, the wax-resin compatibilizer, and a second resin. The wax-resin dispersion may have a high wax content and excellent storage stability. | 02-03-2011 |
| 20100272471 | ELECTROPHOTOGRAPHIC TONER AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS USING THE SAME - Provided are an electrophotographic toner and an electrophotographic image forming apparatus using the same. The electrophotographic toner includes: parent toner particles including a binder resin, a colorant, a releasing agent, and a charge control agent; and barium titanate external additives having an average primary particle diameter in the range of about 50 to about 150 nm, an average shape factor (SF1) in the range of about 100 to about 120, a shape factor in the range of about 0.96 to about 1, and an aspect ratio in the range of about 0.89 to about 1, and added to the surface of the parent toner particles. | 10-28-2010 |
| 20100239972 | TONER USING RESIN HAVING ACTIVE HYDROGEN-CONTAINING GROUP AND METHOD OF PREPARING THE SAME - Provided are a toner using a resin having an active hydrogen-containing group, and a method of preparing the toner. The toner using a resin having an active hydrogen-containing group includes a binder resin (A), a cross-linked resin including a THF insoluble content of 99-100 weight %, a colorant, and at least one additive. The cross-linked resin is arranged in the form of a plurality of islands in each particle of the toner. | 09-23-2010 |
| 20100236820 | PREPREG HAVING UNIFORM PERMITTIVITY, AND METAL CLAD LAMINATES AND PRINT WIRING BOARD USING THE SAME - A prepreg, and a metal clad laminate and printed wiring board including the prepreg. The prepreg includes a substrate and a liquid crystal polymer resin impregnated into the substrate, and has a surface roughness in a range of 0.1 to 5.0 μm on one or both surfaces thereof. | 09-23-2010 |
| 20100232837 | TONER HAVING CORE-SHELL STRUCTURE AND METHOD OF PREPARING THE SAME - A toner has a core-shell structure including a toner core portion having a resin with an active hydrogenactive hydrogen containing group, a colorant and at least one additive, and a toner shell portion surrounding the toner core portion, wherein the toner shell portion includes a cross-linked resin prepared by reaction of at least a portion of the active hydrogen containing group and the cross-linking agent. | 09-16-2010 |
| 20100216069 | METHOD OF PREPARING TONER - Provided is a method of preparing a toner, the method including: preparing a solvent emulsion by stirring a medium including a polar medium, an organic solvent, and a surfactant; adding toner components including a resin and a pigment to the solvent emulsion; removing the organic solvent from the solvent emulsion including the toner components; and collecting a toner particle from the solvent emulsion from which the organic solvent is removed. | 08-26-2010 |
| 20100215973 | MALEIMIDE BASED COMPOUND, COMPOSITION FOR FORMING BOARD, AND BOARD FABRICATED USING THE SAME - Disclosed is a composition for forming a board. The composition includes a maleimide-based compound including at least three maleimide groups and a liquid crystalline polymer or oligomer. A prepreg and a board are each fabricated using the composition. | 08-26-2010 |
| 20100159231 | THERMOSETTING RESIN COMPOSITION AND BOARD USING THE SAME - Disclosed is a thermosetting resin composition including a thermosetting aromatic oligomer represented by the following Chemical Formula 1, a hollow particle, and solvent, and a board comprising the same. | 06-24-2010 |
| 20100155120 | THERMOSETTING OLIGOMER OR POLYMER, THERMOSETTING RESIN COMPOSITION INCLUDING THE OLIGOMER OR POLYMER, AND PRINTED CIRCUIT BOARD USING THE COMPOSITION - A thermosetting oligomer or thermosetting polymer is provided. The thermosetting oligomer or thermosetting polymer contains repeating units, each of which has at least one thermosetting functional group in the side chain and is represented by Formula 1: | 06-24-2010 |
| 20100139961 | COMPOSITION FOR PRODUCING A BOARD AND PRINTED CIRCUIT BOARD USING THE SAME - A composition, including a liquid crystal polymer or oligomer having a terminal hydroxyl group, and a cross-linking agent including a bismaleimide compound, an epoxy resin or a combination thereof, wherein the liquid crystal polymer or oligomer is represented by Formula 1: | 06-10-2010 |
| 20100124037 | THERMOSETTING COMPOSITION AND PRINTED CIRCUIT BOARD USING THE SAME - A thermosetting composition including an organic solvent, a liquid crystalline thermoset oligomer, and either a crosslinking agent or an epoxy resin or both is disclosed. A printed circuit board which includes the thermosetting composition is also disclosed. The printed circuit board is produced by impregnating the thermosetting composition into a reinforcing material. | 05-20-2010 |
| 20100098462 | METHOD OF PREPARING TONER USING MICRO-SUSPENSION PARTICLES AND TONER PREPARED USING THE METHOD DIGITAL IMAGE DATA - A method of preparing a toner using a micro-suspension particle, includes preparing a mixture by mixing a resin having acidic groups, a master batch of coloring pigment, and at least one additive with an organic solvent, and then neutralizing the acid groups of the resin with a base; forming a micro-suspension by adding the prepared mixture to a dispersion medium; and forming a toner composition by removing the organic solvent from the prepared micro-suspension. Therefore, the method of preparing a toner using the disclosed micro-suspension particle and a toner prepared using the same can save manufacturing costs, and can improve charging ability and cleaning properties of the toner. | 04-22-2010 |
| 20100055599 | METHOD OF PREPARING TONER HAVING CORE-SHELL STRUCTURE AND TONER PREPARED USING THE SAME - A method of preparing a toner having a core-shell structure. The method includes: preparing a mixture by mixing a resin with acid groups, a coloring agent and at least one additive with an organic solvent, and neutralizing the acid groups of the resin with a base; forming a micro-suspension solution by adding the mixture to a dispersion medium; forming a toner core by removing the organic solvent from the micro-suspension; and forming a toner complex having a core-shell structure by seed-polymerizing at least one monomer on the surface of the toner core. Thus, the toner that can prevent hot offsets, improve storage stability at a high temperature and improve charge stability against environment changes can be prepared with reduced costs according to the method. | 03-04-2010 |
| 20100046105 | Optical Sheet For High Resolution, Filter Comprising The Same, And Display Device Having The Sheet Or The Filter - Provided are an optical sheet for high resolution, a filter comprising the same, and a display device having the optical sheet for high resolution or the filter. The optical sheet for high resolution includes: a plurality of external light absorption units that are disposed separate from each other at a predetermined interval and comprise a light absorbing material; a plurality of light transmission units optically separated from each other by the external light absorption units, wherein the refractive index of the light transmission unit is smaller than the refractive index of the external light absorption unit. Thus, the optical sheet for high resolution, the filter comprising the same, and the display device having the optical sheet for high resolution or the filter can maintain high resolution by reducing generation of ghost images and moiré phenomenon and improving the contrast ratio. | 02-25-2010 |
| 20090212451 | Method of Preparing Wholly Aromatic Polyester - The invention relates to a method of preparing wholly aromatic polyester including: mixing monomers, introducing the mixed monomers into a reactor having a rectangular or trapezoidal plate type stirring impeller, and polymerizing the introduced monomers through esterification with a power per unit volume of 10˜60 kW/m | 08-27-2009 |
| 20090151987 | COMPOSITION FOR PRODUCING PRINTED CIRCUIT BOARD AND PRINTED CIRCUIT BOARD USING THE SAME - A composition for producing a printed circuit board is provided. The composition includes a polyamic acid having one or two crosslinkable functional groups introduced at one or both ends thereof, a liquid crystal polymer (LCP) or a liquid crystalline thermoset (LCT) oligomer, and an organic solvent. Therefore, the composition can be used as a material for next-generation boards that are becoming gradually lighter in weight and smaller in thickness and size. Further provided is a printed circuit board produced using the composition. | 06-18-2009 |
| 20090117348 | COMPOSITION FOR PRODUCING BOARD AND PRINTED CIRCUIT BOARD USING THE SAME - Compositions for producing a board and a printed circuit board produced using the composition are provided. The compositions can be used for the production of a variety of printed circuit boards. | 05-07-2009 |
| 20090111949 | LIQUID CRYSTAL POLYESTER RESIN COMPOSITION AND PRINTED CIRCUIT BOARD USING THE SAME - Disclosed herein is a liquid crystal polyester resin composition and a printed circuit board using the composition. The composition comprises a liquid crystal polyester, a polybenzimidazole and an aprotic solvent. The composition exhibits good thermal stability and has a low dielectric constant. The composition can be advantageously used as a material for printed circuit boards (PCBS) used in semiconductor packages, mobile devices and LCD devices. | 04-30-2009 |
| 20090092800 | COMPOSITION FOR PREPARING MODIFIED POLYIMIDE/CLAY NANOCOMPOSITES AND PREPARATION METHOD OF MODIFIED POLYMIDE/CLAY NANOCOMPOSITES USING THE SAME - Example embodiments provide a composition for preparing modified polyimide/clay nanocomposites. The composition comprises a modified polyamic acid terminated with groups at both ends of the backbone and a layered clay compound. Example embodiments provide a method for preparing modified polyimide/clay nanocomposites using the composition. Polyimide/clay nanocomposites prepared by the method exhibit excellent thermal properties. Therefore, the polyimide/clay nanocomposites can find many useful applications as materials for next-generation substrates that are small in size and thickness and light in weight. | 04-09-2009 |
