公开(公告)号：CA1179793A

公开(公告)日：1984-12-18

申请号：CA397467

申请日：1982-03-03

Applicant: BASF AG

Inventor： DEGEN HANS-JUERGEN ,  GUENDER WOLF ,  LINHART FRIEDRICH ,  AUHORN WERNER ,  FREY GUENTER ,  STREIT WERNER ,  FIKENTSCHER ROLF

IPC: C02F1/58 ,  B01D21/01 ,  B01D37/02 ,  C02F1/28 ,  C02F1/52 ,  C02F1/54 ,  C02F1/00

Abstract: O.Z. 0050/035033 A process for removing anionic compounds from water which is recycled in manufacturing processes, and from waste water, by adding (1) water-soluble products obtained by reacting an alkylating agent, having an aromatic substituent, with a cationic polyelectrolyte and (2) mineral adsorbents and/ or a magnesium salt, aluminum salt or iron salt, with formation and flocculation of water-insoluble reaction products.

公开(公告)号：NO820961L

公开(公告)日：1982-09-27

申请号：NO820961

申请日：1982-03-23

Applicant: BASF AG

Inventor： DEGEN HANS-JUERGEN ,  GUENDER WOLF ,  FREY GUENTER ,  STREIT WERNER ,  FIKENTSCHER ROLF ,  WULZ KLAUS

IPC: D21H19/10 ,  D21H17/07 ,  D21H17/55 ,  D21H21/28 ,  D21H

Abstract: A process for coloring paper with an acid dye and/or direct dye in an aqueous medium in the presence of a water-soluble reaction product of an alkylating agent, possessing an aromatic substituent, with a cationic polyelectrolyte. The process gives papers with high color strength and substantially avoids cylinder twosidedness of the coloration.