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1. (WO2018046794) METHOD FOR MANUFACTURE OF PAPER, BOARD OR THE LIKE AND USE OF THE COMPOSITION

Pub. No.:    WO/2018/046794    International Application No.:    PCT/FI2017/050621
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Tue Sep 05 01:59:59 CEST 2017
IPC: D21H 17/37
D21H 17/15
D21H 21/10
D21H 21/18
D21H 21/36
D21H 23/18
Applicants: KEMIRA OYJ
Inventors: HIETANIEMI, Matti
EKMAN, Jaakko
KARPPI, Asko
STRENGELL, Kimmo
Title: METHOD FOR MANUFACTURE OF PAPER, BOARD OR THE LIKE AND USE OF THE COMPOSITION
Abstract:
A method for manufacture of paper, board or the like, comprising the step of dissolving a composition into aqueous solution, whereby an aqueous treatment solution is obtained for adding the obtained treatment solution to the pulp. The composition comprising a copolymer of acrylamide and at least one cationic monomer, the copolymer comprising cationic monomers at least 15 mol- %, calculated from total amount of monomers, and an ionic crosslinker agent comprising at least two carboxyl groups, wherein the equivalent ratio of carboxyl groups: cationic monomer is between 1:20 and 1:0.5.