Patent · US Expired

Process for the production of paper

US6355141B1 · kind B1 · utility

2Cited by

1References

14Claims

0Family size

Assignee

AKZO NOBEL N.V. · NL

Inventors

Rein Sikkar · Floda, SE
Michael Persson · Mörbylånga, SE
Maria Norell · Mölndal, SE

Key dates

Filing date	Apr 23, 1999
Grant date	Mar 12, 2002
Priority date	—
Expiry date	Apr 23, 2019

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/54
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process for the production of paper in which cellulosic fibers are treated with microparticles comprising shell-formed carbon allotrope particles, paper obtainable from this process, and a drainage and/or retention agent comprising at least partially hydrophilic, anionic microparticles comprising shell-formed carbon allotrope particles.

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