Patent · US Active

Filler for paper making process

US9657441B2 · kind B2 · utility

0Cited by

11References

16Claims

0Family size

Assignee

AKZO NOBEL N.V. · NL

Inventors

Erik Sanne · Timrå, SE
Rune Kjell Andersson · Handen, SE
Johan Nyander · Sollentuna, SE

Key dates

Filing date	Aug 21, 2014
Grant date	May 23, 2017
Priority date	—
Expiry date	Oct 23, 2034

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/26
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a filler comprising clay and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65.

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