Process for removing pigments from waste paper

Details Process for removing pigments from waste paper Process for removing pigments from waste paper

1980-10-14

1983-03-08

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

209166, D21C 502

Patent

active

043760112

ABSTRACT:
A flotation composition for removing pigments from waste paper, which consists of a carboxylic acid ester and of from 0 to 10 weight %, referred to the ester of the above formulae, of a surfactant.

REFERENCES:
patent: 2005742 (1935-06-01), Hines
patent: 2312466 (1943-03-01), Erickson et al.
patent: 3056713 (1962-10-01), Gartner
patent: 3248277 (1966-04-01), Gartner
patent: 4013505 (1977-03-01), Balcar et al.
patent: 4040949 (1977-08-01), Saitoh

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