Process for deinking waste paper using a mixture of thiol ethoxy

Details Process for deinking waste paper using a mixture of thiol ethoxy Process for deinking waste paper using a mixture of thiol ethoxy

1995-05-02

1997-08-26

Czaja, Donald E.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 4, D21C 502

Patent

active

056606834

ABSTRACT:
A process and composition for deinking waste paper is disclosed. The process comprises administering a sufficient amount of a mixture containing (a) an alcohol, randomly alkoxylated with a mixture of alkylene oxides to form a surfactant, (b) a thiol ethoxylate surfactant, and (c) a secondary alcohol alkoxylate, to a sample of waste paper for which treatment is desired. The surfactant enhances the aggregation and densification of electrostatic toner particles, while promoting foaming in the aqueous slurry.

REFERENCES:
patent: 4618400 (1986-10-01), Wood et al.
patent: 5024821 (1991-06-01), Greenshields et al.
patent: 5200034 (1993-04-01), Richmann et al.
patent: 5248388 (1993-09-01), Richmann et al.
patent: 5417807 (1995-05-01), Fossas et al.
patent: 5417808 (1995-05-01), Okamoto et al.
Derwent Publications Ltd., AN 86-260376.

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