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Machine translation
1. (WO1981002030) USE OF POLYALKYLENE OXIDES FOR THE SEPARATION OF CELLULOSE FIBRES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002030    International Application No.:    PCT/SE1980/000347
Publication Date: 23.07.1981 International Filing Date: 23.12.1980
IPC:
D21C 5/02 (2006.01), D21F 1/82 (2006.01)
Applicants:
Inventors:
Priority Data:
8000141 08.01.1980 SE
Title (EN) USE OF POLYALKYLENE OXIDES FOR THE SEPARATION OF CELLULOSE FIBRES
(FR) UTILISATION D"OXYDES DE POLYALKYLENE POUR LA SEPARATION DE FIBRES DE CELLULOSE
Abstract: front page image
(EN)Unbleached sulphate fibres are chemically separated from other fibres by the use of high molecular polyalkylene oxides, preferably polyethylene oxide. The polyalkylene oxides are added to aqueous suspensions of fibre mixtures and hereby flocculates unbleached sulphate fibres in a selective manner and the flocks can be separated by known methods such as sedimentation, flotation, filtration etc. Use of polyalkylene oxides for selective flocculation of unbleached sulphate fibres gives the possibility of upgrading for example recovered fibres, broke and secondary fibre raw materials.
(FR)Des fibres de sulfate non blanchies sont separees chimiquement d"autres fibres en utilisant des oxydes de polyalkylene de poids moleculaire eleve, de preference de l"oxyde de polyethylene. Les oxydes de polyalkylene sont ajoutees aux suspensions aqueuses de melange de fibres donnant ainsi une floculation des fibres de sulfate non blanchies d"une maniere selective et les flocons peuvent etre separes par des procedes connus telle que la sedimentation, la flottation, la filtration, etc. En utilisant des oxydes de polyalkylene pour la floculation selective de fibres de sulfate non blanchies, il est possible de regenerer des fibres recuperees, des materiaux bruts de fibres secondaires et cassees.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)