公开(公告)号：DE3111713A1

公开(公告)日：1982-10-07

申请号：DE3111713

申请日：1981-03-25

Applicant: BASF AG

Inventor： FREY GUENTER DIPL CHEM DR ,  STREIT WERNER DIPL CHEM DR ,  FIKENTSCHER ROLF DIPL CHEM DR ,  DEGEN HANS-JUERGEN DIPL CHEM D ,  GUENDER WOLF DIPL CHEM DR

IPC: C08G69/00 ,  C08G69/48 ,  C08G73/00 ,  C08G73/02 ,  C08G73/04 ,  D21H21/28 ,  D21H1/46 ,  D21H3/80

Abstract: Water-soluble benzylated polyamidoamines which contain from 0.1 to 0.9 mole of benzyl groups per equivalent of nitrogen, and onto which from 20 to 400 parts by weight of ethyleneimine or propyleneimine have been grafted per 100 parts by weight of polyamidoamine, processes for the preparation of the materials, and the use of the materials as cationic assistants in processes for coloring paper with acid dyes and/or direct dyes in an aqueous medium. The papers obtained show a high color strength, with substantially no two sidedness of the coloration.

公开(公告)号：DE3111712A1

公开(公告)日：1982-10-07

申请号：DE3111712

申请日：1981-03-25

Applicant: BASF AG

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

IPC: D21H19/10 ,  D21H17/07 ,  D21H17/55 ,  D21H21/28 ,  D21H3/80 ,  D21H1/46 ,  D06P1/642

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.

公开(公告)号：DE2332046A1

公开(公告)日：1975-01-23

申请号：DE2332046

申请日：1973-06-23

Applicant: BASF AG

Inventor： GUENDER WOLF DIPL CHEM DR ,  REUSS GUENTER DIPL CHEM DR

IPC: C08G12/32 ,  D21H17/51

Abstract: The process comprises precondensing melamine and HCHO (or a cpd forming HCHO) in an aqs. suspension at pH 4-9; followed by treatin gthe precondensate with excess HCHO in above pH range and finally acidifying the condensate suspension with HCl or an aliphatic carboxylic acid with apKa =3.5 and/or phosphoric acid. The soln. is storage stable for >=6 months without gelling and when incorporated in paper gives a prod. with superior wet strength than when prior art resins (as prepd by US 2986489) are used.