Method for altering the tack of materials

C - Chemistry – Metallurgy – 09 – J

Patent

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C09J 11/08 (2006.01) D21C 5/02 (2006.01) D21C 9/08 (2006.01)

Patent

CA 2597905

Methods are provided for altering the tack of an adhesive material by contacting the adhesive material with an amount of a cyclodextrin compound effective to reduce the tack of the adhesive material. In a preferred embodiment, the method is for altering the tack of adhesive contaminants in a process fluid, which includes the steps of providing a process fluid in which are dispersed contaminant particles which comprises one or more adhesive materials (such as pitch, pressure sensitive adhesives, hot melts, latexes, binders, and combinations thereof); and adding to the process an amount of a cyclodextrin compound effective to reduce the tack of the adhesive material. The process fluid can be in a process stream in a pulp and paper mill.

L'invention concerne des procédés d'altération de l'adhérence instantanée d'un matériau adhésif par mise en contact du matériau adhésif avec une quantité de cyclodextrine efficace pour réduire l'adhérence instantanée du matériau adhésif. Dans un mode de réalisation préféré, le procédé est destiné à altérer l'adhérence instantanée de contaminants adhésifs dans un fluide de traitement, et consiste à utiliser un fluide de traitement dans lequel sont dispersées des particules contaminantes, contenant un ou plusieurs matériaux adhésifs (par exemple la poix, les adhésifs autocollants, les adhésifs thermofusibles, les latex, les liants, et des combinaisons de ceux-ci), et à ajouter une quantité efficace d'un composé de cyclodextrine pour réduire l'adhérence instantanée du matériau adhésif. Le fluide de traitement peut se trouver dans un flux de traitement d'un moulin de pâte à papier.

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