Patent · US Active

Process for the production of paper

US8888957B2 · kind B2 · utility

3Cited by

56References

4Claims

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	Sep 6, 2012
Grant date	Nov 18, 2014
Priority date	—
Expiry date	Sep 6, 2032

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/71
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; an inorganic polymer P1 being a cationic polyaluminium compound; 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.