Patent · US Active

Process for the production of paper

US8273216B2 · kind B2 · utility

4Cited by

42References

14Claims

0Family size

Assignee

AKZO NOBEL N.V. · NL

Inventors

Fredrik Solhage · Hagfors, SE
Joakim Carlén · Varberg, SE
Birgitta Johansson · Falun, SE

Key dates

Filing date	Dec 20, 2006
Grant date	Sep 25, 2012
Priority date	—
Expiry date	Jul 11, 2027

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/68
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a process for producing paper which comprises: providing an aqueous suspension comprising cellulosic fibers, adding to the suspension, after all points of high shear, a cationic polysaccharide; and a polymer P2 being an anionic polymer; and, dewatering the obtained suspension to form paper.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.