Korea Kumho Petrochemical Co., Ltd.

Nam Hyun Cho

Kee Yoon Roh

Jung Hee Jang

Je Young Park

Yuncheol Park

Yun Cheol Park

Hee Su Kim

An embodiment of the present invention provides a method for preparing a phthalonitrile-based compound, comprising: (a) feeding a mixture comprising a phthalic acid-based compound and a nitrile-based compound into a first reaction part to react; (b) transferring a resulting product of step (a) to a second reaction part connected to the first reaction part to react under the condition of 350 to 400° C.; and (c) obtaining a phthalonitrile-based compound at a discharge part connected to the second reaction part, wherein the second reaction part has a length in a fluid flow direction which is 10 times or more of a square root of an average cross-sectional area perpendicular to the fluid flow direction.

Method for preparing phthalonitrile-based compound

An embodiment of the present invention provides a method for preparing hydrogenated bisphenol A, comprising: (a) heating a reactor in which bisphenol A, a solvent, and a ruthenium supported catalyst are added; (b) supplying hydrogen into the reactor to react; and (c) blocking the supply of hydrogen to react.

Method for preparing hydrogenated bisphenol A

Provided is an epoxy reactive diluent, wherein the content of a compound represented by Formula 1 below is 85% by weight or more based on a total weight of an epoxy reactive diluent composition:  wherein n is 0, 2, 4 or 6.

Epoxy reactive diluent and manufacturing method therefor

An additive composition includes a specific amount of &#x3b1;-methylstyrenated phenol, can be mixed with a main material part or curing agent part for paint, and can suppress the occurrence of a discoloration issue.

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Daejeon, South Korea

Nam Hyun Cho