Method for deinking wastepaper

Details Method for deinking wastepaper Method for deinking wastepaper

D - Textiles, Paper

21

C

9/1

D21C 5/02 (2006.01)

Patent

CA 1327103

Abstract Of The Disclosure The present invention relates to a method of removing ink from secondary fiber by contacting a pulp of said secondary fiber with an aqueous medium in the presence of a polymeric material having a glass transition temperature in the range of from about 20°C. to about 70°C. and a substituted polyethylene oxide to agglomerate the ink into discrete masses and separating the agglomerated ink from the pulp-containing aqueous medium.

597310

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