Other

Samsung Electronics Co., Ltd.

Industry-University Cooperation Foundation Sogang University

Davy Process Technology Limited

Byeong No Lee

Eun Joo Jang

Jung Ho Lee

Hyung Rok Kim

Yo Han Han

In Sun Jung

Hyo Jin Ko

Ju Mi Lee

Kwan Woo Shin

In-Sun Jung

Oh-Sun Kwon

Ho Sun Lee

Hyun Kwan Shin

Byung Soon Chun

Hyung Soo Cho

Jae Hak Choi

The present invention relates to a method for manufacturing a module type microfluidic chip comprising: (a) printing electrode patterns on a substrate using a conductive ink and inkjet printing; (b) cutting the printed electrode patterns; and (c) assembling the cut electrode patterns to manufacture the module type microfluidic paper chip. Unlike the traditional method for manufacturing printed circuit substrate using a patterning agent or device, the method of the present invention only incorporates a simple printing process using an inkjet printer, and thus patterning can be simplified and various types of chips can be manufactured depending on the assembly type of electrode patterns. Accordingly, inexpensive, economical, and highly utilizable microfluidic chips can be provided using the method of the present invention.

Method for manufacturing modular microfluidic paper chips using inkjet printing

A process for preparing an 1,3-alkanediol from a 3-hydroxyester includes hydrogenating a 3-hydroxyester in an alcohol-containing solvent in the presence of a hydrogenation catalyst prepared by adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles, and then aging the particles following addition of colloidal silica thereto. Novel hydrogenation catalysts so prepared are also disclosed.

Process for preparing 1,3-alkanediols from 3-hydroxyesters

A process for preparing a 1,3-alkandiol from a 3-hydroxyester, comprises preparing a catalyst by adding an alkaline precipitator to an aqueous copper salt solution to form copper hydroxide particles, and aging the particles following the addition of a colloidal silica thereto; activating the catalyst by reduction with a H gas or a H -containing gas and applying a pressure of about 5 psig to about 2000 psig at a temperature of about 100&deg; C. to about 250&deg; C. in the presence of an activation solvent; and hydrogenating a 3-hydroxyester in a liquid phase slurry with a H gas or a H -containing gas and applying a pressure of about 50 psig to about 3000 psig at a temperature of about 100&deg; C. to about 250&deg; C. in the presence of the activated catalyst and a reaction solvent, whereby a 1,3-alkanediol can be selectively prepared from a 3-hydroxyester with a high yield.

Process for preparing a 1,3-alkandiol from 3-hydroxyester

Disclosed herein is a novel process for preparing 3-hydroxyesters, comprising: (a) reacting an epoxide derivative with carbon monoxide and alcohol in a solvent at a temperature of 30&tilde;150&deg; C. under a pressure of 50&tilde;3000 psig by using a catalyst system consisting of a catalytic amount of a cobalt compound and optionally an effective amount of a promoter to produce a 3-hydroxyester or a derivative thereof; (b) separating the resulting product and the solvent from the cobalt compound and the promoter in a stripping column at a temperature of &minus;30&tilde;200&deg; C. in an atmosphere of a stabilizing gas; and (c) recycling a part or all of the separated cobalt compound and promoter to the step (a) and repeating the steps (a) through (c).

Process for preparing 3-hydroxyesters from epoxide derivatives

A process for preparing a malonic acid monoester or &bgr;-ketoester from an epoxide includes the steps of reacting an epoxide with carbon monoxide and an alcohol in the presence of a catalytic amount of a cobalt compound and at least one promoter to produce a &bgr;-hydroxyester, separating the &bgr;-hydroxyester from the cobalt compound and the promoter, and oxidizing the &bgr;-hydroxyester to produce a malonic acid monoester or &bgr;-ketoester.

Process for preparing malonate derivatives or &bgr;-keto esters from epoxide derivatives

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Seoul, South Korea

Byeong No Lee