Composition wherein recycled cellulosic pulp is deinked

Details Composition wherein recycled cellulosic pulp is deinked Composition wherein recycled cellulosic pulp is deinked

1987-03-18

1990-04-24

Chin, Peter

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

1621644, D21C 502

Patent

active

049197541

ABSTRACT:
A composition containing an aqueous, recycled cellulosic fibre pulp, print pigments contaminating the pulp, from 0.1% to 10% based on the weight of the pulp solids of a curable precursor of a solid polymer resin which is not substantive to the cellulosic fibres of the pulp, and a catalyst capable of curing the resin precursor in the dispersion; wherein the resin precursor contains a mixture of a fluid prepolymer having at least two reactive functional groups per molecule and a cross-linking agent capable of reacting with the functional groups.

REFERENCES:
patent: 3377234 (1968-04-01), Illingworth
patent: 3431143 (1969-03-01), Johnson et al.
patent: 3846227 (1974-11-01), Mestetsky et al.
patent: 3963560 (1976-06-01), Mestetsky et al.
patent: 4013505 (1977-03-01), Balcar et al.
patent: 4147616 (1979-04-01), Balcar et al.
patent: 4447498 (1984-05-01), Fink et al.
Tappi Journal, vol. 66, No. 10, p. 24 (1983).

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