Production of paper, board and cardboard from paper stocks...

Details Production of paper, board and cardboard from paper stocks... Production of paper, board and cardboard from paper stocks...

D - Textiles, Paper

21

H

9/59

D21H 17/45 (2006.01) D21H 17/34 (2006.01)

Patent

CA 2034869

Paper, board and cardboard are produced from paper stocks containing foreign sub- stances by drainage in the presence of a polymer which contains, as typical polymerized constituents, units of the formulae Image where R1 and R2 are each H, C1-C3-alkyl, and which have K values of not less than 130, the polymers containing less than 10 mol % of units of the formula II.

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