Preparation of a cationic copolymer

Details Preparation of a cationic copolymer Preparation of a cationic copolymer

1979-05-10

1980-08-12

Cockeram, H. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 296HN, 260 296WQ, 260 296WB, 526280, C08L 3302, C08L 3324

Patent

active

042172624

ABSTRACT:
A cationic copolymer is prepared by first dissolving the total quantity of a suitable nonionic monomer in water. To this solution there is added up to about 95 mole percent of the total quantity of a suitable cationic monomer of greater reactivity than the nonionic monomer. The solution is then emulsified in a sufficient quantity of a hydrocarbon oil so as to provide a water-in-oil emulsion, with the water phase dispersed. Polymerization is then initiated with incremental additions of the withheld cationic monomer continuing throughout the copolymerization reaction. The resulting cationic copolymer exhibits a uniform distribution of cationic moieties along the polymer chain length which, in turn, has been shown to be a surprisingly more effective cationic copolymer when employed as a dewatering aid.

REFERENCES:
patent: 3284393 (1966-11-01), Vanderhoff et al.
patent: 3975341 (1976-08-01), Trapasso
patent: 4077930 (1978-03-01), Lim et al.
patent: 4152200 (1979-05-01), Coscia et al.
Alfrey et al., Copolymerization, Interscience, (N.Y.), 1952, vol. VIII, p. 152.
Fram et al., Ind. Eng. Chem., vol. 47, No. 5, May 1955, pp. 1000-1005.

Affiliated with

Also associated with

Rating

Preparation of a cationic copolymer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of a cationic copolymer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of a cationic copolymer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2181874