Polyelectrolyte complexes and a method for production thereof

US6740633B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Ralf Norenberg · Ingelheim am Rhein, DE
• Soren Hildebrandt · Speyer, DE
• Michael Kluge · Ludwigshafen, DE
• Dieter Boeckh · Schifferstadt, DE

Key dates

• Filing date: Nov 6, 2002
• Grant date: May 25, 2004
• Expiry date: Nov 14, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3776
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Polyelectrolyte complexes of cationic and anionic polymers which consist of(a) cationic condensates of (i) at least one amine and (ii) a crosslinking agent from the group consisting of epihalohydrins, bishalohydrins of diols, bishalohydrins of polyalkylene glycols, bishalohydrins of polytetrahydrofurans, alkylene dihalides, alkylene trihalides, bisepoxides, trisepoxides, tetraepoxides and/or mixtures of said compounds, and/or quaternized cationic condensates of (i) and (ii), and(b) anionic compounds containing at least three anionic groupsand have a charge ratio between anionic and cationic polymers of from 0.01 to 20, and a process for the preparation of the polylectrolyte complexes by mixing the cationic condensates (a) with anionic compounds (b).