Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1998-03-31
2000-06-20
Vincent, Sean
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162 5, 252 60, 252 61, D21B 108
Patent
active
060773898
ABSTRACT:
A deinking method for obtaining regenerated pulp of high brightness is provided. One or more of deinking agents selected from (a-1) to (a-2) given below are used, and a deinking step is carried out, in which a washing step is carried out at treating temperatures from 40 to 80.degree. C.;
REFERENCES:
patent: 5665204 (1997-09-01), Rodriguez et al.
patent: 5718801 (1998-02-01), Li et al.
patent: 5786559 (1999-03-01), Srivatsa et al.
Ishibashi Yoichi
Sawai Minoru
Kao Corporation
Vincent Sean
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