D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/62 (2006.01) D21H 17/14 (2006.01) D21H 17/37 (2006.01) D21H 21/26 (2006.01)
Patent
CA 2081786
Abstract of Disclosure The present invention provides a rosin emulsion composition for paper sizing obtained by dispersing a rosinous substance containing an ester formed from a rosin and a polyhydric alcohol or polyhydric phenol directly in water with the aid of a cationic acrylamide polymer and/or methacrylamide polymer having a hydrophobic group and a method of sizing using the same. The sizing composition of the present invention exhibits an excellent sizing effect which cannot be achieved by a conventional rosin sizing agent in a neutral papermaking system containing calcium carbonate not to mention in an acidic papermaking system. It is also excellent in storage and mechanical stabilities and remarkably reduces foaming which is inevitably caused with use of a sizing agent.
Nagao Kazuki
Nakamura Katsunori
Japan Pmc Corporation
Riches Mckenzie & Herbert Llp
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