Process for the colour stripping and bleaching of coloured waste

Details Process for the colour stripping and bleaching of coloured waste Process for the colour stripping and bleaching of coloured waste

1992-03-09

1993-11-30

Jones, W. Gary

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 6, 162 5, D21C 502

Patent

active

052661580

ABSTRACT:
Process for color stripping and bleaching of colored waste paper by treatment by means of monoperoxysulphuric acid or of one of its salts, according to which the treatment is performed in the presence of a halide ion.

REFERENCES:
patent: 441462 (1890-11-01), Barnes
patent: 1791445 (1931-02-01), Grenaudier
patent: 2221294 (1940-11-01), Bragg
patent: 2582496 (1952-01-01), Massey et al.
patent: 3565927 (1971-02-01), Wakeman
patent: 4076578 (1978-02-01), Puddington et al.
patent: 4264412 (1981-04-01), Hasler et al.
patent: 4332638 (1982-06-01), Mauer et al.
patent: 4360402 (1982-11-01), Ortner et al.
patent: 4548674 (1985-10-01), Hagman
Haekh's Chemical Dictionary, 5th Edition, McGraw-Hill Book Company (New York), 1987, p. 468.
Pulp and Paper Manufacture, Third Edition, vol. 3, Secondary Fibers and Non-Wood Pulping, p. 234, 1987, R. P. Singh, "A Color Stripping".

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