D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 21/02 (2006.01) D21C 5/02 (2006.01) D21C 9/00 (2006.01) D21C 9/08 (2006.01) D21F 1/30 (2006.01) D21H 17/22 (2006.01) D21H 17/36 (2006.01) D21H 17/45 (2006.01) D21H 17/54 (2006.01) D21H 17/37 (2006.01)
Patent
CA 2250134
Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100 % hydrolysis, a high molecular weight gelatin having a molecular weight of about 100,000 or higher, and a cationic polymer.
Cette invention concerne des compositions et des procédés permettant d'inhiber les dépôts de contaminants organiques qui sont issus de la pâte utilisée dans des systèmes de pâte à papier et de fabrication du papier. Ces procédés consistent à ajouter à la pâte, ou sur les surfaces dudit système susceptibles de recevoir des dépôts, une composition qui comprend un alcool polyvinyle ayant une hydrolyse de 50 à 100 %, une gélatine possédant un poids moléculaire élevé d'environ 100.000 ou plus, ainsi qu'un polymère cationique.
Betzdearborn Inc.
Borden Ladner Gervais Llp
Hercules Incorporated
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