Cationic polymer flocculant

Details Cationic polymer flocculant Cationic polymer flocculant

C - Chemistry, Metallurgy

08

G

402/44, 362/50,

C08G 73/02 (2006.01) C02F 1/54 (2006.01) C11D 3/37 (2006.01) D21H 17/54 (2006.01)

Patent

CA 1098523

Abstract of the Disclosure The specification discloses new cationic flocculants which are prepared by the polycondensation of an epihalohydrin and the Mannich reaction products of phenol or cresol, formaldehyde, and a dialkylamine. More particularly the flocculants are water-soluble polycondensates of an eiphalo- hydrin and an amine represented by the formula: Image ...,.. (I) wherein y represents hydrogen or lower alkyl; R1 R2, R3, R4, R5 and R6 are the same or different and each represents lower alkyl; ?, m and n are O or 1 respectively, with the proviso that ?, m and n are not all O at the same time; or a mixture of the amine (a) and at least one other compound selected from the group (b) consisting of ammonia, monoalkylamines, dialkylamines, alkylenediamines, aromatic amines, polyalkyl- enepolyamines, and cyclic amines, the amine (a) being contained in an amount of more than 50 mole % of the total of the amines (a) and (b). As an alternative the amine may be a mixture of the compound above with less than 50 mole % of another amine or ammonia. The flocculants are useful for the flocculation of various kinds of suspensions, such as various industrial waste waters, pulp slurry in paper making and the like.

309934

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