Brightening color dyed wastepaper with a bleaching agent and a q

Details Brightening color dyed wastepaper with a bleaching agent and a q Brightening color dyed wastepaper with a bleaching agent and a q

1993-07-27

1996-12-03

Czaja, Donald E.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 7, 162 8, D21B 108

Patent

active

055804225

ABSTRACT:
A method for brightening fiber from colored waste paper comprising bleaching pulp from colored waste paper with sodium hydrosulfite, formamidine sulfinic acid, or hydrogen peroxide in the presence of a selected quaternary compound.

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