Paper sizing composition

Details Paper sizing composition Paper sizing composition

D - Textiles, Paper

21

H

D21H 21/16 (2006.01) A61L 2/18 (2006.01) D21H 17/16 (2006.01)

Patent

CA 2488926

The invention relates to the sizing of paper and board using alkenyl succinic anhydride (ASA). The invention provides a sizing composition which comprises an aqueous emulsion of an ASA wherein the ASA incorporates a maximum of 1% by weight (preferably a maximum of 0.5 % by weight) of polymeric residues.The composition may incorporate less than 0.5 % by weight of olefins. Paper sizing compositions in accordance with the invention provide enhanced resistance to penetration of the edges of paper and board by agents such as hot hydrogen peroxide and lactic acid.

L'invention concerne le collage de papier et de carton au moyen d'anhydride succinique d'alcényle (ASA). L'invention porte sur une composition de collage qui comprend une émulsion aqueuse d'un ASA, lequel comprend un maximum d'1 % en poids (de préférence un maximum 0,5 % en poids) de résidus polymères. Ladite composition peut comprendre moins de 0,5 % en poids d'oléfines. La composition de l'invention confère une résistance accrue à la pénétration de peroxyde d'hydrogène et d'acide lactique dans les bords du papier ou du carton.

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