Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1996-07-22
1998-05-05
Czaja, Donald E.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
D21C 502
Patent
active
057468850
ABSTRACT:
Flexographic or other printed paper is deinked by a process which comprises pulping in the presence of an emulsion of crosslinked, insoluble, ionisable and swellable polymer particles. The emulsion preferably provides a viscosity (at 3%) in the ionised state of below 50,000 cps (Brookfield RVT) and is novel.
REFERENCES:
International Search Report.
Bingham Timothy Guy
Dungworth Howard Roger
Stockwell John Oliver
Allied Colloids Limited
Czaja Donald E.
Nguyen Dean T.
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