Cooperatieve Verkoop-en Productievereniging Van Aardappelmeel En Derivaten Avebe B.a.

Cooperatie Avebe U.a.

Thomas Albert Wielema

Ronald Peter W Kesselmans

Jacob Terpstra

Pieter Hubert Brouwer

Berend Cornelis A Ter Veer

John Beugeling

Jan Hendriks

Annet Vrieling-Smit

The invention relates to the field of papermaking. More in particular, the invention relates to the use of a novel dry strength agent in the wet-end of the papermaking process.

Process for making paper

The invention relates to a process for the oxidation of starch, wherein a root or tuber starch comprising at least 95 wt. % of amylopectin, based on dry substance of the starch, is treated with an oxidizing agent and the resulting product is subjected to an alkaline treatment, said treatment comprising keeping the product for at least 15 minutes at a temperature of 20-50&deg; C. and a pH higher than 10. The invention further relates to an oxidized starch obtainable by said process and to various applications of said oxidized starch.

Oxidation of starch

The invention relates to a process for making paper and to the use of starch in said process. In particular, the invention relates to a process for making paper, wherein in the wet-end a cross-linked starch is added to an aqueous suspension of cellulose-based fibers, which starch has a degree of cross-linking of, measured as a FANN viscosity at 300 rpm, of less than 50 mPas, and a FANN-A value of less than 2.5.

Growing community of inventors

Groningen, Netherlands

Thomas Albert Wielema