Patent application number | Description | Published |
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 |
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 |
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 |
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 |
20120193571 | WHOLLY AROMATIC LIQUID CRYSTAL POLYESTER RESIN COMPOUND WITH IMPROVED HEAT RESISTANCE, AND PREPARATION METHOD THEREOF - Disclosed are a wholly aromatic liquid crystal polyester resin compound and a preparation method thereof. The disclosed wholly aromatic liquid crystal polyester resin compound comprises a wholly aromatic liquid crystal polyester resin having a high melting point, and an inorganic filler having a high thermal conductivity. In addition, the disclosed wholly aromatic liquid crystal polyester resin compound can be prepared by using a twin screw extruder having a barrel temperature of 350 to 450° C. | 08-02-2012 |
20120199790 | WHOLLY AROMATIC LIQUID CRYSTAL POLYESTER RESIN COMPOUND, PREPARATION METHOD THEREOF, PARTS FOR OPTICAL PICKUP, AND PREPARATION METHOD THEREOF - Disclosed are a wholly aromatic liquid crystal polyester resin compound, a preparation method thereof, parts for optical pickup, and a preparation method thereof. The disclosed wholly aromatic liquid crystal polyester resin compound comprises two kinds of wholly aromatic liquid crystal polyester resins having different melting points and an additive, and most of the terminal groups in the resins having lower melting points among the resins comprise a carboxyl group. | 08-09-2012 |
20130112917 | WHOLLY AROMATIC LIQUID CRYSTAL POLYESTER RESIN COMPOUND HAVING IMPROVED INSULATION PROPERTIES - Provided is a wholly aromatic liquid crystalline polyester resin compound having excellent electrical insulating properties, heat resistance, and mechanical strength due to the inclusion of an inorganic filler having low electrical conductivity, high heat resistance, and high mechanical strength. | 05-09-2013 |
20130137845 | PRODUCTION METHOD FOR A WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN, A WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN PRODUCED BY MEANS OF THE METHOD, AND A COMPOUND OF THE WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN - Disclosed are a production method for a wholly aromatic liquid crystalline polyester resin, a wholly aromatic liquid crystalline polyester resin produced using the method, and a compound of the wholly aromatic liquid crystalline polyester resin. The disclosed production method for a wholly aromatic liquid crystalline polyester resin comprises the steps of synthesizing a wholly aromatic liquid crystalline polyester resin by synthesizing a wholly aromatic liquid crystalline polyester prepolymer by a condensation polymerization of a monomer and then reducing the pressure inside a reaction vessel containing the synthesized prepolymer at a predetermined internal pressure reduction rate of the reaction vessel. | 05-30-2013 |