Patent · US Expired

Process for sizing paper

US6818100B2 · kind B2 · utility

0Cited by

15References

20Claims

0Family size

Assignee

AKZO NOBEL N.V. · NL

Inventors

Erik Lindgren · Bohus, SE
Sten Frolich · Mölndal, SE
Michael Persson · Mörbylånga, SE
Barbro Magnusson · Ytterby, SE

Key dates

Filing date	Aug 6, 2001
Grant date	Nov 16, 2004
Priority date	—
Expiry date	Aug 6, 2021

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/16
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibres, and optional fillers, a sizing dispersion comprising a polymer having an aromatic group, and a sizing promoter comprising a polymer having an aromatic group, wherein the sizing dispersion and the sizing promoter are added separately to the aqueous suspension.

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