公开(公告)号：US10059593B2

公开(公告)日：2018-08-28

申请号：US15380460

申请日：2016-12-15

Applicant: Korea Institute of Science and Technology

Inventor： Munju Goh ,  Nam Ho You ,  Hyeonuk Yeo ,  Bon-Cheol Ku ,  Sang Jun Youn ,  Jin Won Yu ,  Jin Jung

IPC: C07C29/10 ,  B01J23/34 ,  B01J23/26 ,  B01J23/36 ,  B01J23/46 ,  B01J27/13 ,  B01J23/22 ,  C01B31/04 ,  C01F7/02 ,  C08J11/16 ,  C01B32/17 ,  C01B32/23 ,  C01B32/196 ,  C01B32/956

Abstract: For depolymerization of a cured epoxy resin material, used is a composition including a transition metal salt or a transition metal oxide containing a transition metal element (metal element that belongs to Groups 3-12 in the Periodic Table). In the reaction solvent, an oxidation occurs by the medium of the transition metal element so that the cured epoxy resin material may be depolymerized and decomposed. In this manner, it is possible to carry out depolymerization of a cured epoxy resin material at a temperature of 200° C., specifically 100° C. or lower very simply and rapidly, and to reduce the processing cost and energy requirement.

公开(公告)号：US10280534B2

公开(公告)日：2019-05-07

申请号：US16126580

申请日：2018-09-10

Applicant: Korea Institute of Science and Technology

Inventor： Munju Goh ,  Bon-Cheol Ku ,  Nam Ho You ,  Sang Jun Youn ,  Hyeonuk Yeo

IPC: C01F7/02 ,  C03C13/00 ,  D01F9/24 ,  C01B32/16 ,  C01B32/956 ,  C01B32/184 ,  C01B32/23 ,  C08J11/16

Abstract: A cured epoxy resin material is depolymerized by using a composition including a compound represented by the chemical formula of XOmYn (wherein X is hydrogen, alkali metal or alkaline earth metal, Y is halogen, m is a number satisfying 1≤m≤8 and n is a number satisfying 1≤n≤6), and a reaction solvent, wherein X is capable of being dissociated from XOmYn and Y radical is capable of being produced from XOmYn in the reaction solvent. It is possible to carry out depolymerization of a cured epoxy resin material, for example, at a temperature of 200° C., specifically 100° C. or lower, and to reduce processing cost and energy requirement. It is also possible to substitute for a reaction system using an organic solvent as main solvent, so that the contamination problems caused by the organic solvent functioning as separate contamination source may be solved and environmental contamination or pollution may be minimized.

公开(公告)号：US10106421B2

公开(公告)日：2018-10-23

申请号：US15380460

申请日：2016-12-15

Applicant: Korea Institute of Science and Technology

Inventor： Munju Goh ,  Nam Ho You ,  Hyeonuk Yeo ,  Bon-Cheol Ku ,  Sang Jun Youn ,  Jin Won Yu ,  Jin Jung

IPC: C07C29/10 ,  B01J23/34 ,  B01J23/26 ,  B01J23/36 ,  B01J23/46 ,  B01J27/13 ,  B01J23/22 ,  C01B31/04 ,  C01F7/02 ,  C08J11/16 ,  C01B32/17 ,  C01B32/23 ,  C01B32/196 ,  C01B32/956

Abstract: For depolymerization of a cured epoxy resin material, used is a composition including a transition metal salt or a transition metal oxide containing a transition metal element (metal element that belongs to Groups 3-12 in the Periodic Table). In the reaction solvent, an oxidation occurs by the medium of the transition metal element so that the cured epoxy resin material may be depolymerized and decomposed. In this manner, it is possible to carry out depolymerization of a cured epoxy resin material at a temperature of 200° C., specifically 100° C. or lower very simply and rapidly, and to reduce the processing cost and energy requirement.