Use of a particulate material derived from mammalian hair in...

D - Textiles – Paper – 21 – B

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D21B 1/12 (2006.01) C08H 1/06 (2006.01) C08J 3/12 (2006.01) C08L 89/04 (2006.01) D06M 11/30 (2006.01) D06M 11/50 (2006.01) D06M 11/82 (2006.01) D21H 13/34 (2006.01)

Patent

CA 2557400

The invention relates to the use of a particulate material derived from mammalian hair in the preparation of a paper or paperboard product, which particulate material has been prepared by means of a process, which comprises the following steps: (a) subjecting mammalian hair to an oxidation treatment in which the hair is contacted with a solution, which comprises a bleaching agent; (b) separating the oxidised hair from the solution; (c) drying the separated hair; and (d) subjecting the dried hair to a treatment in which the hair is formed into a particulate material having an average particle size in the range of from 0.5 to 4 mm. The invention further relates to a paper or paperboard product, or paper pulp comprising said particulate material.

L'invention concerne l'utilisation d'un matériau particulaire issu de cheveux de mammifères dans la préparation d'un produit en papier ou en carton. Ce matériau particulaire a été préparé au moyen d'un procédé comprenant plusieurs étapes consistant : (a) à soumettre des cheveux de mammifères à un traitement d'oxydation dans lequel les cheveux sont mis en contact avec une solution qui contient un agent de blanchiment ; (b) à séparer les cheveux oxydés de la solution ; (c) à sécher les cheveux séparés ; et (d) à soumettre les cheveux séchés à un traitement au cours duquel les cheveux sont formés en un matériau particulaire possédant une granulométrie moyenne comprise entre 0,5 et 4 mm. Cette invention porte aussi sur un produit en papier ou en carton ou une pâte à papier contenant ledit matériau particulaire.

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