D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/67 (2006.01) D21H 17/24 (2006.01) D21H 17/45 (2006.01) D21H 19/10 (2006.01) G03G 7/00 (2006.01)
Patent
CA 2640356
A paper which contains a preaggregated filler having an average particle diameter as determined by laser diffractometry of 10-80 ~m and obtained by treating a filler with a combined acrylamide copolymer comprising (A) an anionic polysaccharide and (B) a cationic and/or ampholytic acrylamide copolymer, in such an amount that the paper has an ash content of 3-40 wt.% on a solid basis. This paper is satisfactory in paper strength including strength and stiffness, has high smoothness, and attains excellent print quality.
L~invention concerne un papier contenant une charge préagrégée présentant un diamètre de particule moyen déterminé par diffractométrie laser compris entre 10 et 80 µm et obtenue en traitant une charge avec un copolymère acrylamide combiné comprenant (A) un polysaccharide anionique et (B) un copolymère acrylamide cationique et/ou ampholytique, en une quantité telle que le papier présente une teneur en cendres comprise entre 3 et 40 % en poids en termes de solides. Ce papier présente une résistance de papier satisfaisante, y compris une résistance et une rigidité, une homogénéité importante et permet d~obtenir une excellente qualité d~impression.
Chatani Akinobu
Kimura Yoshiharu
Koyamoto Hiroshi
Kutsuwa Koji
Nonomura Fuminari
Harima Chemicals Inc.
Nippon Paper Industries Co. Ltd.
Sim & Mcburney
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