Branched/cross-linked cationic phenol-formaldehyde polymers...

Details Branched/cross-linked cationic phenol-formaldehyde polymers... Branched/cross-linked cationic phenol-formaldehyde polymers...

C - Chemistry, Metallurgy

02

F

362/49

C02F 1/56 (2006.01) B01D 17/04 (2006.01) C02F 1/54 (2006.01)

Patent

CA 1155568

ABSTRACT Oily waste emulsions which cause low turbidity in industrial waste water effluents are successfully treated with cross-linked cationic polymeric compounds synthesized by reacting phenol, substituted phenol, formaldehyde and various low molecular weight polyamines having a preferred molecular weight of at least 1,500 and not exceeding a molecular weight of about 30,000. The polyamines are derived from a base catalyzed polymerization of ammonia and ethylene dichloride or by the oligomerization of ethyleneimine.

381628

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