Patent ID: 8425727
Filing Date: 2013-04-23
Classification: D21H

Abstract:
1. A method for increasing the gluability of paper or board comprising the step of contacting the paper or board with at least one oligoester consisting of a polycondensation product of a) from 40 to 52 mol % of one or more dicarboxylic acids or esters thereof, b) from 10 to 40 mol % of ethylene glycol and/or propylene glycol, c) from 3 to 20 mol % of polyethylene glycol, d) from 0.5 to 10 mol % of a water-soluble addition product of from 5 to 80 mol of an alkylene oxide with 1 mol of C 1 -C 24 -alcohols, C 6 -C 18 -alkylphenols or C 8 -C 24 -alkylamines and e) from 0.4 to 10 mol % of one or more polyols having from 3 to 6 hydroxyl groups.