Method of producing water-soluble condensates and addition products containing amino groups, and use of said condensates and addition products

US6056967A · kind A · utility

Assignee

• BASF SE

Inventors

• Ulrich Steuerle · Heidelberg, DE
• Hubert Meixner · Ludwigshafen, DE
• Rainer Dyllick-Brenzinger · Speyer, DE
• Wolfgang Reuther · Neckargemünd, DE
• Hartmut Kanter · Ludwigshafen, DE
• Albert Hettche · Heßheim, DE
• Jürgen Weiser · Schriesheim, DE
• Günter Scherr · Ludwigshafen, DE

Key dates

• Filing date: Jul 6, 1998
• Grant date: May 2, 2000
• Expiry date: Jul 6, 2018

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for the preparation of water-soluble, amino-containing condensates and adducts having a greater drainage and retention effect in papermaking, in which from 5 to 95% by weight of the condensates or adducts are separated off as permeate from solutions of water-soluble, amino-containing condensates or adducts by ultrafiltration through membranes and the amino-containing condensates or adducts having improved efficiency are, if required, isolated from the retentate, and the high molecular weight polymer fractions contained in the retentate are used as retention aids, drainage aids and fixing compositions in papermaking, as promoters in the sizing of paper with alkyldiketenes, as flocculants for sewage sludges, as adhesion promoters in the production of laminated films, as additives for hair and skincare compositions and as compositions for immobilizing anionic active ingredients.