Use of polyalkylene oxides for the separation of cellulose...

Details Use of polyalkylene oxides for the separation of cellulose... Use of polyalkylene oxides for the separation of cellulose...

D - Textiles, Paper

21

C

9/1

D21C 5/02 (2006.01) D21F 1/82 (2006.01)

Patent

CA 1150913

Abstract of the Disclosure 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 thereby flocculate unbleached sulphate fibres in a selective manner, the flocks then being 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.

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