Hyundai Motor Company

Kia Motors Corporation

Seoul National University

Sk Chemicals Co., Ltd.

Sung-Wan Jeon

Na-Kyong Yun

Ha-Eun Jeong

Tae-young Kim

Tae-Young Kim

Min-young Kim

Jae-il Chung

Jong Ryang Kim

Chae-Hwan Hong

Young-Gyu Kim

Na-Ra Shin

So-Jeong Moon

So-Hyun Kwon

Jae-Il Chung

Disclosed is a method for producing adipamide, which may include the steps of: (a) reacting glucose, nitric acid (HNO), sodium nitrite (NaNO) and potassium hydroxide (KOH) to produce a glucaric acid potassium salt, (b) producing glucamide by reacting the glucaric acid potassium salt, with an acidic solution and removing a potassium ion from the glucaric acid potassium salt, (c) preparing an reaction admixture by adding the glucamide and a catalyst to hydrogen halide and acetic acid, and (d) treating the reaction admixture with hydrogen gas in a reactor thereby producing the adipamide.

Method for producing adipamide as intermediate for production of raw material for bio-based nylon

A method for preparing bio adipic acid includes steps of (a) preparing a glucaric acid potassium salt by mixing and reacting glucose, nitric acid (HNO), sodium nitrite (NaNO) and potassium hydroxide (KOH), (b) preparing glucamide from the glucaric acid potassium salt prepared in the step (a), (c) preparing 2,4-hexadiene diamide by performing a deoxydehydration reaction on the glucamide prepared in the step (b), (d) preparing adipamide by introducing the 2,4-hexadiene diamide prepared in the step (c), hydrogen and a hydrogenation catalyst to a reactor and performing a hydrogenation reaction, and (e) preparing adipic acid by introducing the adipamide prepared in the step (d) and an aqueous hydrochloric acid solution to a reactor and then performing a hydrolysis reaction at a specific temperature.

Method for manufacturing adipic acid using biomass

The present invention relates to a polylactic acid resin composition which has a low glass transition temperature, fusion temperature, and enthalpy of fusion, can be crystallized under commercially meaningful processing conditions, has good film processability such as extrusion properties, has excellent storage stability, and is highly biodegradable. The polylactic acid resin composition comprises a block copolymer comprising a hard segment and a soft segment, the hard segment comprising polylactic acid repeat units, and the soft segment comprising polyurethane polyol repeat units which have polyether-based polyol repeat units linearly connected via a urethane bond, wherein the soft segment is contained by 5% to 35% by weight based on the weight of the block copolymer, and the polylactic acid repeat units include poly(L-lactic acid) repeat units and poly(D-lactic acid) repeat units by a molar ratio of 94:6 to 88:12.

Thermally adhesive flexible polylactic acid resin composition

Growing community of inventors

Gyeonggi-do, South Korea

Sung-Wan Jeon