公开(公告)号：EP4365219A1

公开(公告)日：2024-05-08

申请号：EP22832557.7

申请日：2022-03-31

申请人： DIC Corporation ,  Green Earth Institute Co., Ltd.

发明人： KONDO, Akihiro ,  OKA, Yasutaka ,  SASAMOTO, Akane ,  ARAI, Tatsuhiko ,  NAKAYASHIKI, Toru ,  MIURA, Satomi

IPC分类号： C08G73/10 ,  C08J3/12 ,  C08J3/24

CPC分类号： C08J3/12 ,  C08J3/24 ,  C08G73/10

摘要： Provided is an aspartic acid composition containing aspartic acid and an impurity, the impurity containing at least one selected from the group consisting of an amino acid other than aspartic acid, an organic acid, and salts of the amino acid other than aspartic acid and the organic acid, a content of the impurity being 0.02% by mass or more and 1.1% by mass or less. Also provided is a method for producing polysuccinimide, the method including performing a polymerization reaction of the aspartic acid using the aspartic acid composition. Also provided is a polysuccinimide composition produced by the method for producing polysuccinimide.

公开(公告)号：EP2269995B1

公开(公告)日：2012-12-12

申请号：EP08721708.9

申请日：2008-03-10

申请人： DIC Corporation

发明人： KAI, Hidetomo ,  SASAMOTO, Akane ,  HAYAKAWA, Hitoshi

IPC分类号： C07D255/02 ,  C08F4/26 ,  C08F4/40 ,  C07F15/02 ,  B01J31/18

CPC分类号： C07F15/025 ,  B01J31/1805 ,  B01J2231/122 ,  B01J2531/0238 ,  B01J2531/842 ,  C07D255/02 ,  C08F10/00 ,  C08F12/08 ,  C08F293/005