Cerestar Holding B.v.

Cargill Inc.

Detlev Glittenberg

Marc Charles Florent Berckmans

Rudy Roux

Peter Leonhardt

Johannes Felix Hintermayer

The present invention relates to compositions of starch. The compositions consist of an anionic and a cationic starch wherein at least one of the starches is waxy. The compositions are surprisingly not resulting in an agglomerated product when cooked. The compositions are used in paper or cardboard preparation. The compositions are cooked and added at the wet end of the paper production process. This results in a high possible addition level and the use of the size press is abolished. The resulting paper and board are shown to have better characteristics than the paper and board prepared with the same components which have not been mixed prior to addition but which are added separately.

Starch compositions and the use thereof in wet-end of paper preparation

Starch composition and the use thereof in wet-end of paper preparation

A method for preparing a cationic cross-bonding reagent wherein the amount of cross-bonding impurities is determined and a certain quantity of a cross-bonding agent is added. This cationic cross-bonding reagent is used in a process for preparing cationic cross-bonded starches with tailor-made viscosity and excellent viscosity stability. Products with tailor-made viscosity can be used according to their need in specific applications in the wet-end of papermaking.

Cationic cross-bonded starch with stable and tailor-made viscosity

Growing community of inventors

Krefeld, Germany

Detlev Glittenberg