Office wastepaper deinking process using fatty alcohols

Details Office wastepaper deinking process using fatty alcohols Office wastepaper deinking process using fatty alcohols

1992-07-17

1993-11-02

Hastings, Karen M.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 8, D21C 502

Patent

active

052580997

ABSTRACT:
This invention related to a process for the deinking of office wastepaper stocks which includes: converting the wastepaper to a pulp, contacting the pulp with an aqueous medium of alkaline pH containing between about 0.05 and about 2 percent by weight, calculated on a dry weight basis of the pulp, of a deinking agent which is at least one fatty alcohol having in the range of from about 8 to about 18 carbon atoms, without the use of other deinking agents, and treating the resulting pulp-containing medium by washing or flotation to removed suspended ink therefrom.

REFERENCES:
patent: 3932206 (1976-01-01), Illingworth et al.
patent: 4162186 (1979-07-01), Wood et al.
patent: 4518459 (1985-05-01), Freis et al.
patent: 4561933 (1985-12-01), Wood et al.
patent: 4628400 (1986-10-01), Wood et al.
patent: 4666558 (1987-05-01), Wood et al.

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