Eka Chemicals Ab

Sekab E-technology Ab

Akzo Nobel Chemicals International B.v.

Sune Wännström

Leif Jönsson

Erik Sanne

Kjell Rune Andersson

Björn Alriksson

Peter Marten Van Der Horst

Marie-Louise Wallberg

Cherryleen Garcia-Lindgren

Peter Marten Horst Van Der

The present invention relates to a filler comprising calcium salt and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the filler is substantially free from fibers or fibrils of cellulose or lignocellulose. The invention also relates to a filler comprising calcium salt and a cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the cellulose derivative contains cationic groups.

Filler for papermaking process

The present invention provides a method for decreasing the fermentation inhibition in a fermentation of cellulose-derived material in a fermentor, wherein fermentation inhibitory properties of the material subjected to fermentation is decreased by an addition of at least one reducing agent to the fermentor. Further, there is provided a method of increasing the fermentability of a fermentation process comprising the steps of measuring the fermentability of the fermentation process and if the fermentability is below a reference value, then adding at least one reducing agent to the fermentation process.

In situ detoxification of fermentation inhibitors with reducing agents

Growing community of inventors

Domsjö, Sweden

Sune Wännström