Kemira Oyj

Leif Robertsen

Asko Karppi

Kari Vanhatalo

Jonas Konn

Veli-Matti Vuorenpalo

Kari Parviainen

Olli Dahl

Erkki Iikka Sakari Rasanen

Kaisa Kaski

Erkki Iikka Rasanen

The present invention relates to a process for producing microcellulose comprising subjecting fibrous cellulosic material to acid hydrolysis at a temperature from 10&#xb0; C. to less than 140&#xb0; C. and at a consistency of at least 8% on dry weight of the cellulose, wherein the amount of added acid is from 0.2 to 2%, preferably from 0.3 to 1.9%, more preferably from 0.5 to 1.5% on dry weight of the cellulose.

Process for producing microcellulose

The present invention relates to a process for producing microcellulose comprising a) acidifying fibrous cellulosic material, b) washing the acidified cellulosic material, c) optionally dewatering the washed cellulosic material, and d) hydrolyzing the washed or washed and dewatered cellulosic material under acidic conditions at a temperature of at least 120&#xb0; C. and at a consistency of at least 8% on dry weight of the cellulose.

Manufacturing of microcellulose

Growing community of inventors

Parainen, Finland

Leif Robertsen