Methods of decontaminating secondary fiber

Details Methods of decontaminating secondary fiber Methods of decontaminating secondary fiber

1985-06-07

1987-02-17

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 72, 162 76, D21C 502

Patent

active

046438009

ABSTRACT:
The method of substantially removing and dispersing resinous or waxy contaminants from contaminant-containing secondary fiber during repulping, is disclosed. The method includes combining the contaminant-containing secondary fiber in an aqueous repulping medium with a substituted oxyethylene glycol nonionic surfactant, and a water soluble, low molecular weight polyelectrolyte dispersant, at an elevated temperature.

REFERENCES:
patent: 3021372 (1962-02-01), Dupre et al.
patent: 3574050 (1971-04-01), Rice
patent: 3822178 (1974-07-01), VanKoeppen et al.
patent: 4347099 (1982-08-01), DeCuester et al.
patent: 4445971 (1984-05-01), Lappi et al.
The Condensed Chemical Dictionary, Van Nostrand Reinhold Co., 1974, p. 858 (CCP).

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