Flocculant for sludges

C - Chemistry – Metallurgy – 02 – F

Patent

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362/51

C02F 1/56 (2006.01) C08F 8/00 (2006.01) D21H 17/34 (2006.01) D21H 17/45 (2006.01)

Patent

CA 1183290

Abstract of the Disclosure: Sludges are flocculated by the addition of a polymer which is prepared by the homo- polymerization of N-vinylformamide in the presence of a free-radical polymerization initiator to give a poly-N- vinylformamide, followed by hydrolysis of from 10 to 90% of the formyl groups in the poly-N-vinylformamide.

407066

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