Patent · US Active

Method for the manufacture of microfibrillated cellulose

US8546558B2 · kind B2 · utility

21Cited by

1References

19Claims

0Family size

Assignee

STFI-Packforsk AB · SE

Inventors

Mikael Ankerfors · Stockholm, SE
Tom Lindstrom · Sollentuna, SE
Gunnar Henriksson · Solna, SE

Key dates

Filing date	Jan 31, 2007
Grant date	Oct 1, 2013
Priority date	—
Expiry date	Sep 7, 2029

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H11/18
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method of treating chemical pulp for the manufacture of microfibrillated cellulose includes the following steps: a) providing a hemicellulose containing pulp, b) refining the pulp in at least one step and treating the pulp with one or more wood degrading enzymes at a relatively low enzyme dosage, and c) homogenizing the pulp thus providing the microfibrillated cellulose. A microfibrillated cellulose obtainable by the method is also provided. The microfibrillated cellulose can be used in food products, paper products, composite materials, coatings or in rheology modifiers (e.g. drilling muds).

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