Compositions and methods for inhibiting organic contaminant...

D - Textiles – Paper – 21 – H

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D21H 21/02 (2006.01) D21C 9/00 (2006.01) D21F 1/30 (2006.01) D21H 17/09 (2006.01) D21H 17/14 (2006.01)

Patent

CA 2257112

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 systems a composition comprising a dinonyl sulfosuccinate anionic surfactant which is used in systems containing multivalent cations, preferably calcium ions. The methods also utilize a blend of dioctyl sulfosuccinate and didecyl sulfosuccinate anionic surfactants.

Cette invention concerne des compositions et des procédés qui permettent d'inhiber les dépôts de contaminants organiques provenant de pâte à papier dans des systèmes de pâte à papier et de fabrication du papier. Ces procédés consistent à ajouter à la pâte, ou sur les surfaces sujettes aux dépôts dans des systèmes de fabrication du papier, une composition comprenant un tensioactif anionique à base de sulfosuccinate de dinonyl, lequel est utilisé dans des systèmes contenant des cations multivalents et, de préférence, des ions calcium. Ces procédés font également appel à un mélange de tensioactifs anioniques à base de sulfosuccinate de dioctyl et de sulfosuccinate de didécyl.

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