公开(公告)号：EP1070044B1

公开(公告)日：2004-09-15

申请号：EP99910984.6

申请日：1999-03-10

申请人： ALBEMARLE CORPORATION

发明人： WIGGINS, Paul, L ,  LAMBETH, Gregory, H. ,  BROWN, William, R.

IPC分类号： C07C209/90

CPC分类号： C07C209/90 ,  C07C211/51

摘要： Existing coloration of a liquid ring-polyalkyl-substituted aromatic primary diamine is reduced by blending into such diamine a color-reducing amount of at least one dihydrocarbylhydroxylamine. Preferably, the resultant product is stored in a closed container under an inert atmosphere.

公开(公告)号：EP1070044A1

公开(公告)日：2001-01-24

申请号：EP99910984.6

申请日：1999-03-10

申请人： ALBEMARLE CORPORATION

发明人： WIGGINS, Paul, L ,  LAMBETH, Gregory, H. ,  BROWN, William, R.

IPC分类号： C07C209/90

CPC分类号： C07C209/90 ,  C07C211/51

摘要： Existing coloration of a liquid ring-polyalkyl-substituted aromatic primary diamine is reduced by blending into such diamine a color-reducing amount of at least one dihydrocarbylhydroxylamine. Preferably, the resultant product is stored in a closed container under an inert atmosphere.