Korea Kumho Petrochemical Co., Ltd.

Seung-Duk Cho

Jun-Ho Lee

Jong-Don Lee

Joo-Hyeon Park

Young-Hoon Ko

Hoo-Chae Kim

Young-Taek Lim

Shin-Hyo Bae

Myung-Woong Kim

Seung-Hee Hong

Hyung-Gi Kim

A light absorbent for forming an organic anti-reflective layer, represented by the following formula 1 or formula 2, is provided:  wherein A represents a substituted or unsubstituted, linear or branched, saturated tetravalent hydrocarbon group, a substituted or unsubstituted, linear or branched, saturated hydrocarbon group and containing one or more heteroatoms, a substituted or unsubstituted aromatic group, a substituted or unsubstituted heteroaromatic group, a substituted or unsubstituted alicyclic group, a substituted or unsubstituted heteroalicyclic group, a substituted or unsubstituted diaryl ether, a substituted or unsubstituted diaryl sulfide, a substituted or unsubstituted diaryl sulfoxide, a substituted or unsubstituted diaryl ketone, or a substituted or unsubstituted diaryl bisphenol A; R, R, and Reach independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted acetal group, or a substituted or unsubstituted hydroxyl group; and n is an integer from 2 to 500.

Organic anti-reflective layer composition containing ring-opened phthalic anhydride and method for preparation thereof

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: 

Copolymer and composition for organic and antireflective layer

There is provided a method for selectively hydrogenating living polymers having olefinic double bonds, in which the living polymers resulting from the polymerization initiated by alkyllithium compound are deactivated by contacting the polymerization terminators for a short time under a mild condition and hydrogenated in the presence of bis(cyclopentadienyl)titanium compound in high efficiency and high reproducibility without adjusting accurate molar ratio of the lithium compound to the titanium compound.

Method for selectively hydrogenating a living polymer having olefinic

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Asan-si, South Korea

Seung-Duk Cho