Roquette Freres

Christian Bouxin

Ludivine Onic

Timo Pajari

Marika Ladret

Régis Houze

Hervé Gombert

Pascal Corriette

Patrick Dauchy

Philippe Sabre

Christophe Bastien

Sylvie Obin

A coating slip including at least one pigment, water and: between 30% and 90% by weight of dextrin (A) of at least one dextrin having a weight-average molecular weight Mof less than 500 kDa; between 10% and 70% by weight of dextrin (B) of at least one dextrin having a weight-average molecular weight M; the weight amounts of dextrins being relative to the total amount of the mixture of dextrins (A) and (B) in the composition, characterized in that Mis greater than M+50 kDa. Also, a process for coating paper including a step of coating with this slip, and also to the paper obtained at the end of this process.

Dextrin-based coating slips

Coating colors having a dextrin having high amylopectin content. When such a dextrin is used in the form of an adhesive, it confers an excellent stability on the adhesive. When the adhesive is subsequently incorporated in the coating color, it makes it possible to adjust the Brookfield viscosity thereof, while providing a good compromise between water retention and rheological behavior at high shear gradient. Also, the use of such dextrin for the manufacture of a coating color. Further, a process for the manufacture of a paper or of a cardboard coated on at least one its face with a coating color, and papers and cardboards thus obtained.

Coating slips for paper and cardboard containing a dextrin with a high amylopectin content

An adhesive composition includes an aqueous dispersion having a primary part, consisting essentially of a gelatinized starch, and a secondary part, comprising essentially a non-gelatinized starch and/or a swollen starch, wherein the starch of the secondary part is a native legume starch, and the starch of the primary part is optionally a native or modified legume starch, the legume starches having an amylose content ranging between 30 and 52%. The invention also concerns the method for preparing such a composition, comprising its use, assembling the parts and drying and satisfying the requirements of modern fast machinery.

Aqueous adhesive composition based on legume starch

Growing community of inventors

Marquillies, France

Christian Bouxin