Creping adhesives with improved film properties

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 179/08 (2006.01) C08G 73/02 (2006.01) C08L 79/02 (2006.01) C09J 179/02 (2006.01) D21H 21/14 (2006.01)

Patent

CA 2740599

The invention provides a composition of matter used to produce very soft high grades of tissue paper. The composition of matter comprises a PAE resin acidified with a multifunctional acid. The multifunctional acid includes but is not limited to carboxyl and sulfonyl. The acid has a functional group selected from carboxyl and sulfonyl and a functional group selected from carboxyl, sulfonyl, hydroxyl, lactone, phenol, amine and heterocycle. The PAE resin facilitates the use of an adhesive in a Yankee Dryer apparatus that is durable when the adhesive is wet but remains soft when the adhesive becomes dry. These properties allow the adhesive to be strong and remain engaged to the dryer apparatus when wet but be easily removed by the creping blade when dry.

L'invention concerne une composition de matière utilisée pour produire des qualités de souplesse très élevées de papiers minces. La composition de matière comprend une résine de PAE acidifiée par un acide multifonctionnel. L'acide multifonctionnel comprend mais n'est pas limité au carboxyle et au sulfonyle. L'acide comporte un groupe fonctionnel choisi parmi les groupes carboxyle et sulfonyle et un groupe fonctionnel choisi parmi les groupes carboxyle, sulfonyle, hydroxyle, lactone, phénol, amine et hétérocyclique. La résine PAE facilite l'utilisation d'un adhésif dans un appareil « Yankee Dryer » qui est durable lorsque l'adhésif est humide mais reste souple lorsque l'adhésif devient sec. Ces propriétés permettent à l'adhésif d'être puissant et de rester collé à l'appareil de séchage lorsqu'il est humide mais dêtre facilement éliminé par la lame de crêpage lorsqu'il est sec.

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