Lotte Advanced Materials Co., Ltd.

Cheil Industries Inc.

Samsung Sdi Co., Inc.

Lotte Chemical Corporation

Jun Ho Chi

Jong Chan Hur

O Sung Kwon

Woo Suk Chei

Bok Nam Jang

Dong Geun Lee

Hyun Hye Jang

Hyuck Man Kwon

Chang Heon Lee

Eun Byul Lee

Jin Yong Bae

Il Hwan Yang

Kyu Buem Choi

A polyphosphonate resin composition of the present invention comprises: about 100 parts by weight of a polyphosphonate resin containing a repeating unit represented by chemical formula 1; and about 0.01 to about 0.05 parts by weight of a phosphite compound containing at least one of diphenyl hydrogen phosphite and a phosphite compound represented by chemical formula 2. The polyphosphonate resin composition has excellent heat resistance, wet heat stability, discoloration resistance, flame retardancy, and the like.

Polyphosphonate resin composition and molded article prepared therefrom

A polycarbonate resin composition of the present invention comprises: a polycarbonate resin; a polyalkylene glycol; an epoxy ester compound containing an ester group and an epoxy group; and a halogenated polycarbonate oligomer. The polycarbonate resin composition has excellent discoloration resistance, color, hydrolysis resistance, flame retardancy and the like even after being irradiated with ionizing radiation.

Ionizing-radiation-resistant polycarbonate resin composition, and molded product comprising same

A polycarbonate resin of the present invention comprises: a repeat unit represented by chemical formula 1 in the specification; a repeat unit represented by chemical formula 2; and a repeat unit represented by chemical formula 3. The polycarbonate resin has excellent flame retardancy, thermal resistance, transparency, impact resistance, etc.

Polycarbonate resin and preparation method therefor

A polycarbonate resin includes a repeat unit represented by Formula 1; a repeat unit represented by Formula 2; and a repeat unit represented by Formula 3, wherein the polycarbonate resin has a weight average molecular weight of about 15,000 g/mol to about 60,000 g/mol and a melt index of about 3 g/10 min to about 40 g/10 min.:  wherein R, R, R, R, a, b, c, and d are the same as defined in the specification. The polycarbonate resin for film can exhibit excellent scratch resistance, elongation, chemical resistance and heat resistance, and can be used to prepare a film in roll form without any protective film.

Polycarbonate resin for film, method for preparing the same and film including the same

Disclosed herein is a polycarbonate resin composition. The polycarbonate resin composition includes: a polycarbonate resin; a polyalkylene glycol compound; and an anthraquinone colorant, wherein the polycarbonate resin composition has a yellow index (YI) of about &#x2212;2 to about 2, as measured in accordance with ASTM D1925 after irradiating an about 3.2 mm thick specimen with &#x3b3;-rays at about 25 kGy and leaving the specimen for 7 days and has an a* value of about &#x2212;2 to about 2 and a b* value of &#x2212;2 to about 2 as measured in accordance with ASTM D2244 after irradiating an about 3.2 mm thick specimen with &#x3b3;-rays at about 25 kGy and leaving the specimen for 7 days. The polycarbonate resin composition can exhibit excellent properties in terms of color, transparency, and impact resistance after being irradiated with ionizing radiation.

Ionizing radiation resistant polycarbonate resin composition and article comprising the same

A polycarbonate resin composition includes: a polycarbonate resin; a polyalkylene glycol compound; and an organic-inorganic hybrid pigment, and has a yellow index (YI) of about &#x2212;2 to about 4 after irradiation with gamma rays, as measured in accordance with ASTM D1925 after irradiating an about 3 mm thick specimen with gamma rays at about 25 kGy and leaving the specimen for 7 days. The polycarbonate resin composition can exhibit excellent properties in terms of color and impact resistance after being irradiated with ionizing radiation.

A container for precision members is prepared from a polycarbonate resin, wherein a polycarbonate resin solution prepared by immersing the polycarbonate resin in water and leaving the solution has chloride ions (Cl), fluoride ions (F) and sulfate ions (SO) in a concentration of about 2 ppb or less, independently of each other, as detected by ion chromatography (IC). The container for precision members is capable of preserving and transporting the precision members predisposed to damage by minor amounts of impurities or contaminants without damage.

Container for precision member and method for preparing the same

The polycarbonate resin composition of the present invention comprises: a polycarbonate ingredient including a copolymerized polycarbonate resin and an aromatic polycarbonate resin, the copolymerized polycarbonate resin having a repeating unit represented by chemical formula 1 of claim, a repeating unit represented by chemical formula 2 of claim, and a repeating unit represented by chemical formula 3 of claim; and an acrylic-based impact reinforcing agent. The polycarbonate resin composition has excellent scratch resistance, impact resistance, and heat resistance.

Polycarbonate resin composition and molded product formed from same

A polycarbonate resin of the present invention is characterized by comprising repeating units represented by Formula 1, Formula 2, Formula 3 and Formula 4, respectively.

Polycarbonate and method of preparing the same

Disclosed herein is a light guide plate formed by injection molding of an aromatic polycarbonate resin that is a polymer of an aromatic dihydroxy compound and a diaryl carbonate. The aromatic dihydroxy compound and the diaryl carbonate are present in a mole ratio of about 1:1.02 to about 1:1.35, and the aromatic polycarbonate resin has a weight average molecular weight from about 10,000 g/mol to about 18,000 g/mol and includes about 5 mol % to about 30 mol % of terminal hydroxyl groups relative to total moles of terminal groups. The light guide plate formed of the aromatic polycarbonate resin can reduce a yellowing phenomenon upon injection molding, can exhibit low color deviation under high temperature and high humidity conditions, and can secure excellent properties in terms of discoloration resistance, and brightness quality (brightness uniformity), and the like.

Light guide plate and method for fabricating the same

The polycarbonate resin of the present invention comprises: a repeating unit represented by formula 1 of claim; and a repeating unit represented by formula 2 of claim. The polycarbonate resin has excellent scratch resistance, transparency and tensile elongation.

Polycarbonate resin, production method for same, and molded article comprising same

The polycarbonate resin composition includes: a polycarbonate component, which includes an aromatic polycarbonate resin and a copolymerized polycarbonate resin including a repeat unit represented by Formula 1 and a repeat unit represented by Formula 2; and a flame retardant, and has a scratch width of about 310 &#x3bc;m or less as measured by Ball-type Scratch Profile (BSP) test; a pencil hardness rating of F or higher; a flame retardancy level of V-0 or higher as measured on a 2.0 mm thick specimen according to UL94; and a transmittance of about 80% or more as measured in accordance with ASTM D1003. The polycarbonate resin composition can exhibit excellent properties in terms of scratch resistance, flame retardancy and transparency. 

Polycarbonate resin composition and molded article produced therefrom

A polycarbonate of the present invention includes repeating units represented by, Formula 1, Formula 2 and Formula 3, respectively, and thus, may have excellent scratch resistance, chemical resistance and impact property.

Polycarbonate, production method for same and optical film comprising same

A copolymerized polycarbonate resin includes a repeat unit represented by Formula 1; a repeat unit represented by Formula 2; and a repeat unit represented by Formula 3, wherein the repeat unit represented by Formula 1 is different than the repeat unit represented by Formula 3, and wherein Formula 1, 2, and 3 are the same as defined in the specification. The copolymerized polycarbonate resin can have excellent properties in terms of chemical resistance, thermal resistance, and/or external appearance.

Copolymerized polycarbonate resin, method for preparing the same, and article comprising the same

Disclosed are a polycarbonate resin composition and a molded product formed of the same. The polycarbonate resin composition includes a polycarbonate resin and three types of UV stabilizers including a first benzotriazole UV stabilizer, a second benzotriazole UV stabilizer, and a bismalonate UV stabilizer to improve heat stability, weather resistance, and visible light transmittance.

Growing community of inventors

Uiwang-si, South Korea

Jun Ho Chi