D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
9/42
D21H 17/20 (2006.01) D21H 13/36 (2006.01) D21H 17/24 (2006.01) D21H 21/08 (2006.01) D21H 21/52 (2006.01)
Patent
CA 2001784
(Translation) 25199-106 Paper, cardboard or paperboard-like material and a process for its production Abstract Paper, cardboard or paperboard-like material containing inorganic fibres, inorganic particle-like additives and organic binders and flocculating agents characterized in that (1) the particle-like inorganic additives constitute 40-80% by weight of the dry matter of the material; (2) the inorganic particle-like additives are compos- ed of (2.1) a base filler of which at least 20% by weight has a particle size of < 2 µm and not more than 20% by weight has a particle size of > 20 µm on the one hand and < 0.5 µm on the other hand, and (2.2) an anionic flocculating active pigment of which at least 50% by weight has a primary particle size of < 2 µm, (3.1) the organic flocculating agent is a cationic polymeric carbohydrate with an average molecular weight of 100,000 to 2,000,000 and a degree of substitution of 0.01 to 0.3 and is present in a quantity of 0.5 to 6% by weight, based on the dry matter of the material, and 25199-106 (3.2) 1000 g of base filler is unable to bind more than 0.1 mMol and 1000 g of anionic flocculating active pigment is able to bind at least 0.1 mMol cationic carbohydrate under floccula- tion.
Doblanzki Peter
Zeuner Manfred
Doblanzki Peter
Fetherstonhaugh & Co.
Zeuner Manfred
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