Cheil Industries Inc.

Lotte Advanced Materials Co., Ltd.

Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Lotte Chemical Corporation

Young Sub Jin

Byeong Do Lee

Jae Keun Hong

Hwan Seok Park

Ho Ryong Sun

Kwang Soo Park

Joo Hyun Jang

Jae Won Heo

Bo Eun Kim

So Young Kwon

Sung Kwan Kim

Yu Jin Jung

Sang Kyun Im

Ki Bo Chang

Jin Kyu Kim

Joon Sung Kim

Shin Hyo Bae

Suk Min Jun

Chul In Lim

Il Jin Kim

Young Jun Kim

Tae Joon Park

Bok Nam Jang

Ki Yon Lee

Kyoung Kyun Park

Bong Jae Lee

Yang Il Kim

Young Sik Ryu

Eric Arifin

Ji-Yong Jeong

Jung Hun Lee

Sung Chul Choi

Natarajan Senthilkumar

Eun Ju Lee

Ha Jun Lee

Sang Hyun Jeon

Jeong Ah Ahn

Sung Chan Kim

Jae Woo Park

Il Kyoung Kwon

Ki Chul Son

Kyung Jong Lee

Suk-Yun Woo

Su Yeong Son

Young Don Yoo

Seung Dae Lee

Bong Sil Jang

Myung Ryul Lee

Seung Hyun Jang

Yong Tae Kim

Sa Chun Bae

A liquid crystalline polymer composition of the present invention comprises: about 10-50% by weight of a liquid crystalline polymer, about 20-60% by weight of an aromatic sulfone polymer, and about 10-50% by weight of an inorganic filler having a pH of about 7-12. The liquid crystalline polymer composition has excellent fluidity, rigidity, and abrasion resistance, and generates little dust.

Liquid crystalline polymer composition and molded article produced therefrom

An organic light-emitting diode (OLED) driving characteristic detection circuit is provided. The OLED driving characteristic detection circuit comprising a first current integrator receiving a first current via a first sensing channel and outputting a first sampling voltage based on the first current, a second current integrator receiving a second current via a second sensing channel and outputting a second sampling voltage based on the second current, and a sampling circuit receiving the first and second sampling voltages, followed by storing and holding the first and second sampling voltages, and removing common noise components included in the first and second sampling voltages, a third sampling capacitor and a fourth sampling capacitor which are connected to an output terminal of the second current integrator and store and hold the second sampling voltage, and a plurality of switches which connect first ends of the first sampling capacitor to the fourth sampling capacitor.

OLED driving characteristic detection circuit and OLED display device including the same

A copolymer includes (A) an aromatic vinyl-based monomer, (B) an unsaturated nitrile-based monomer, (C) a cross-linkable siloxane compound, and (D) an N-substituted maleimide-based monomer to realize a synergistic effect of matting characteristics and heat resistance properties. A thermoplastic resin composition including the copolymer, and a molded article including the thermoplastic resin composition are provided.

Copolymers and thermoplastic resin composition comprising the same

The polyamide resin of the present invention is a polymer of a monomer mixture including a dicarboxylic acid and an amine-based compound, wherein the amine-based compound comprises diamine and triamine and a branching rate measured usingH-NMR is approximately 1% to approximately 8%.

Polyamide resin, polyamide resin composition containing same, preparation method therefor, and molded product including same

A copolymerized polyamide resin includes a polymer of a monomer mixture comprising a dicarboxylic acid component comprising adipic acid and a dicarboxylic acid represented by Formula 1, wherein each Ris independently a Cto Calkyl group and a is an integer from 0 to 4, and a diamine component comprising m-xylene diamine and a diamine represented by Formula 2, wherein A is a single bond or a Cto Chydrocarbon group, Rand Rare each independently a Cto Calkyl group, and b and c are each independently an integer from 0 to 4, wherein the copolymerized polyamide resin has a difference between a melting temperature (Tm) and a crystallization temperature (Tc) of about 50&#xb0; C. or more. The copolymerized polyamide resin may have excellent heat resistance and reduced or no gel generation and yellowing phenomenon in a molding process. 

Copolymerized polyamide resin, method for preparing the same and molded article comprising the same

A thermoplastic resin composition includes (A) a rubber-modified vinyl-based graft copolymer, (B) a silicone-modified aromatic vinyl-based copolymer, and (C) an aromatic vinyl-unsaturated nitrile-based copolymer. The thermoplastic resin composition can exhibit low-gloss characteristics and a synergistic effect of impact resistance and heat resistance.

Thermoplastic resin composition

A thermoplastic resin composition includes (A) a graft rubber copolymer, (B) an aromatic vinyl-vinyl cyanide-based copolymer, and (C) a silicone-modified aromatic vinyl-vinyl cyanide-based copolymer. The silicone-modified aromatic vinyl-vinyl cyanide-based copolymer (C) has an average particle size of about 100 &#x3bc;m or less.

Thermoplastic resin composition and low-gloss molded article made therefrom

An aromatic vinyl copolymer is a polymer of a reaction mixture including: an aromatic vinyl compound; a vinyl cyanide compound; a silicone compound having at least two unsaturated reactive groups; and a Cto Clinear or branched alkyl group-containing acrylic compound. A thermoplastic resin composition including the aromatic vinyl copolymer can have excellent matting properties, impact resistance, flowability, and balance therebetween.

Aromatic vinyl-based copolymer and thermoplastic resin composition including the same

An aromatic vinyl copolymer is a polymer of a reaction mixture including: an aromatic vinyl compound; a vinyl cyanide compound; a first silicone compound having a weight average molecular weight of about 150 g/mol to less than about 6,000 g/mol and including at least two unsaturated reactive groups; and a second silicone compound having a weight average molecular weight of about 6,000 g/mol to about 100,000 g/mol and including at least two unsaturated reactive groups. A thermoplastic resin composition including the aromatic vinyl copolymer can exhibit excellent matting properties, impact resistance, and balance therebetween.

Aromatic vinyl copolymer and thermoplastic resin composition including the same

The continuous solid-state polymerization device of the present invention comprises: a feeder for continuously introducing a prepolymer; a horizontal reactor which is connected via a first connecting part to the feeder and receives the prepolymer from the feeder so as to subject same to solid-state polymerization, wherein the reactor itself is rotated; a stirring device which comprises a stirring shaft rotating inside the horizontal reactor, in the direction opposite to that of the rotational axis of the horizontal reactor, and comprises stirring blades joined vertically to the stirring shaft; and a chamber which is connected via a second connecting part to the horizontal reactor and, once the solid-state polymerization has been completed, receives the resulting polymer discharged from the horizontal reactor, and, here, the feeder, the horizontal reactor and the chamber are in a vacuum state. The continuous solid-state polymerization device prevents the formation of prepolymer stagnation zones, and allows solid-state polymerization to take place continuously in the vacuum state without any inert gas.

Continuous solid-state polymerisation device and method

A continuous solid-state polymerization device according to the present invention comprises: a feeder for injecting a prepolymer continuously; a transverse reactor connected to the feeder via a first connector to receive the prepolymer from the feeder and to perform solid-state polymerization, the reactor itself rotating; and a chamber connected to the transverse reactor via a second connector to receive a polymer, which has been discharged from the transverse reactor, and solid-state polymerization of which has been completed, and to discharge the polymer, wherein the transverse reactor has a demolding coating film formed on the inner wall thereof, and the feeder, the transverse reactor and the chamber are in a vacuum state. The continuous solid-state polymerization device can prevent formation of an interval, in which the prepolymer stagnates, and can perform solid-state polymerization continuously in a vacuum state without using inert gas.

Continuous solid-state polymerization device and method

A method for preparing a tetrapolymer includes preparing a suspension including an aromatic vinyl-based monomer, an unsaturated nitrile-based monomer, an N-substituted maleimide-based monomer, an &#x3b1;-alkyl styrene-based monomer, and an inorganic dispersing agent, and polymerizing the suspension. The method for preparing a tetrapolymer can be useful in lowering a reaction temperature using suspension polymerization, and reducing a reaction time, thereby maximizing productivity. A tetrapolymer prepared by the method is also provided.

Aromatic vinyl based tetrapolymer, method for preparing the same and thermoplastic resin composition comprising the same

A polyamide ester resin includes: a repeat unit derived from a dicarboxylic acid; a repeat unit derived from a diamine; and a repeat unit represented by the following Formula 1, wherein the polyamide ester resin has a melting temperature (Tm) of about 280&#xb0; C. or more. The polyamide ester resin can exhibit excellent properties in terms of moisture absorption resistance, heat resistance, discoloration resistance, fluidity and the like by using a cyclic ester. 

Polyamide ester resin, method for preparing the same, and molded article including the same

Disclosed herein are a vinyl copolymer and a thermoplastic resin composition including the same. The vinyl copolymer is prepared by copolymerization of (A) an aromatic vinyl monomer, (B) a vinyl cyanide monomer, and (C) a dimaleimide monomer.

Vinyl copolymer having high heat resistance and low-gloss, and thermoplastic resin comprising the same

A low-gloss thermoplastic resin composition that can have excellent heat resistance and weather resistance of the present invention includes (A) a thermoplastic resin forming a first dispersed phase; and (B) an acrylic resin forming a second dispersed phase, wherein the first dispersed phase has a network configuration.

Low-gloss thermoplastic resin composition having excellent heat resistance and weather resistance

Growing community of inventors

Uiwang-si, South Korea

Young Sub Jin