Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof

US6007678A · kind A · utility

Assignee

• Eka Nobel AB · SE

Inventors

• Magnus Linsten · Vadstena, SE
• Jiri Basta · Partille, SE
• Ann-Sofie Hallstrom · Göteborg, SE

Key dates

• Filing date: Feb 19, 1998
• Grant date: Dec 28, 1999
• Expiry date: Feb 19, 2018

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21C9/166
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A process for the delignification and bleaching lignocellulosic-containing pulp, in which the pulp is delignified with an organic peracid or salts thereof, treated with a complexing agent, washed and subsequently bleached with a chlorine-free peroxide containing bleaching.