Process for sizing in the production of paper, cardboard, paperboard and other cellulose containing materials

US5026457A · kind A · utility

Assignee

• SKW Trostberg Aktiengesellschaft · DE

Inventors

• Rudolf Eichinger
• Horst Michaud · Trostberg, DE
• Josef Seeholzer · Trostberg, DE

Key dates

• Filing date: Feb 28, 1989
• Grant date: Jun 25, 1991
• Expiry date: Feb 28, 2009

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H17/50
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The present invention provides a process for sizing in the production of paper, cardboard, paperboard and other cellulose-containing materials with and without filling materials and/or pigments by natural or synthetic sizing agents under neutral to weakly basic pH conditions without the use of aluminum salts, wherein sizing is carried out with a combination of natural or synthetic sizing agents with a cationic dicyandiamide resin.