Method and adjuvant composition to improve retention of particle

Details Method and adjuvant composition to improve retention of particle Method and adjuvant composition to improve retention of particle

1996-05-24

1998-10-20

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621641, 1621643, 1621645, 162165, 162166, 162167, 1621681, 162183, D21H 2110

Patent

active

058241922

ABSTRACT:
Disclosed is a method for the production of paper and an adjuvant composition comprising the following ingredients: 30 to 80% by weight of phenolic resin or modified phenolic resin; 10 to 50% by weight of melamine resin; and 5 to 35% by weight of at least one naphthalene sulphonate salt. The ingredients are under granulated form or dissolved in an aqueous solution. The method comprises the step of admixing the adjuvant composition with a solution of one or several polyethylene oxide having a molecular weight varying from 1.times.10.sup.6 to 13.times.10.sup.6 and with an aqueous mixture comprising lignocellulosic particles and an aqueous medium to significantly improve the retention of particles such as fines and fibers, on a wire screen and the drainage of the aqueous medium.

REFERENCES:
patent: 5538596 (1996-07-01), Satterfield et al.
patent: 5554260 (1996-09-01), Radu et al.

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