Korea Kumho Petrochemical Co., Ltd.

Jung Hee Jang

Kee Yoon Roh

Nam Hyun Cho

Je Young Park

Jin Eok Kim

Yun Cheol Park

Yuncheol Park

Je-young Park

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.

Additive composition and method of preparing the same

A heavy-duty epoxy coating composition including an epoxy resin, as a main substance, and styrenated phenol represented by Formula 1: 

Heavy-duty epoxy coating composition including styrenated phenol and method of preparing the same

The present invention relates to styrenated phenol useful as a curing agent or a plasticizing agent for an epoxy resin. More particularly, it relates to use of styrenated phenol, which has viscosity and curing properties similar to those of nonylphenol and exhibits superior curing properties for an epoxy resin, as a curing agent or a plasticizing agent for an epoxy-cured paint.

Styrenated phenol useful as curing agent or plasticizing agent for epoxy resin

A styrenated phenol compound in which a hydrazine or a diaminoalkane compound binds to a styrenated phenol, and a method of preparing the same are provided. The styrenated phenol compound may have improved exterior quality and storage stability of a product by maintaining a hardening stimulation property and plasticity and preventing discoloration when mixed with a hardener for an epoxy paint.

Styrenated phenol compound and a method of preparing the same

Provided is a styrenated phenol compound represented by Formula 1 in which styrenated phenol and hydroxylamine bind to each other: In Formula 1, n is one of integers of 1 to 3, and Rand Rare each hydrogen or one of C1 to C4 alkyl groups. The styrenated phenol compound may maintain curing stimulation property and plasticity, and prevent discoloration when being mixed with a curing agent for an epoxy paint, thereby enhancing exterior quality and storage stability of a product.

Growing community of inventors

Daejeon, South Korea

Jung Hee Jang