公开(公告)号：US20190023857A1

公开(公告)日：2019-01-24

申请号：US16138752

申请日：2018-09-21

Applicant: Korea Research Institute of Chemical Technology

Inventor： Jihoon SHIN ,  Yeong Un KIM ,  Min Woo LEE ,  Bong Keun SONG

IPC: C08J3/14 ,  C08B1/00

Abstract: The present invention relates to a method for preparing a non-acid-treated eco friendly cellulose nanocrystal and the cellulose nanocrystals prepared by the same. The methods for preparing the non-acid-treated cellulose nanocrystal and extracting the cellulose nanocrystal from cellulosic materials of the present invention are eco-friendly methods, compared with the conventional preparation method for cellulose nanocrystal based on acid-hydrolysis; are efficient due to the total energy saving process; are easy to utilize side products; and are characterized by high yield to produce the target cellulose nanocrystal. The nanocrystal prepared according to the present invention exhibits equivalent or higher aspect ratio, yield and crystallinity than the cellulose nanocrystal prepared through acid hydrolysis, and has remarkably excellent thermal stability, so that it can be effectively used for the production of membranes, electrical and electronic parts, substrates, heat insulating materials, and reinforcing materials required for durability against heat.

公开(公告)号：US20210054107A1

公开(公告)日：2021-02-25

申请号：US16999157

申请日：2020-08-21

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Jihoon SHIN ,  Hyunho LEE ,  Yeong Un KIM

IPC: C08B37/08

Abstract: The present disclosure relates to a method for extracting chitin nanocrystals through electron beam irradiation comprising the steps of: (i) irradiating a chitin-based solid material with an electron beam; (ii) washing the chitin-based solid material subjected to electron beam irradiation; (iii) adding a basic solution to the washed chitin-based solid material; (iv) high-pressure homogenizing the chitin-based solid material dispersed in an aqueous system to which the basic solution is added, to prepare a suspension containing chitin nanocrystals.

公开(公告)号：US20150152039A1

公开(公告)日：2015-06-04

申请号：US14616454

申请日：2015-02-06

Applicant: Sangmyung University Seoul Industry-Academy Cooperation Foundation ,  Korea Research Institute of Chemical Technology

Inventor： Ju Hui KANG ,  Je Wan WOO ,  Yong Sung PARK ,  Hyun Chul OH ,  Jun Seong PARK ,  Yi Wen JIN ,  Dae Hee YUN ,  Sang Jin KO ,  Kun Wu CHUNG ,  Yeong Un KIM ,  Nam Kyun KIM

IPC: C07C69/753 ,  C08K5/12 ,  C07C67/347

CPC classification number: C07C69/753 ,  C07C67/347 ,  C07C2602/42 ,  C08K5/12 ,  C08L21/00

Abstract: The present invention relates to norbornene-ester-based derivatives, to a method for preparing same, and to the uses thereof. This compound may be used as a plasticizer which can replace a phthalate-based plasticizer.

Abstract translation: 本发明涉及降冰片烯酯系衍生物，其制备方法及其用途。 该化合物可以用作可代替邻苯二甲酸酯类增塑剂的增塑剂。