Process for the flotation of fillers from deinked waste paper in the presence of surfactants containing sulfonate groups

US5308448A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Ansgar Behler · Bottrop, DE
• Rainer Hoefer · Goldkronach, DE
• Klaus Hornfeck · Mettmann, DE
• Wolfgang von Rybinski · Goldkronach, DE

Key dates

• Filing date: Feb 8, 1993
• Grant date: May 3, 1994
• Expiry date: Feb 8, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/64
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for the flotation of fillers from deinked waste paper in the presence of surfactants containing sulfonate groups.