Situation of Synthesis and Application for Copolymer Aqueous Dispersion of Acrylamide with Water-soluble Vinylionic Monomers

摘要

The developing progress of polyacrylamide (PAM) and copolymers of AM with water-soluble vinyl ionic monomers in aqueous media is introduce introducedd and also two types of the particle formation mechanism. The situation for propagating copolymers dispersions of acrylamide by employing this method in aqueous media at home and abroad in recent decades is simply summarized. In the dispersion polymerization of PAM and AM with water-soluble vinyl ionic monomers in aqueous media for propagating organic polyelectrolyte an inorganic salt in a dispersion media are used as precipitant(I.e. salting) and a water soluble azo-bis midline ammmonium or an inorganic peroxide are employed as initiator and an organic polyelectrolyte is used as dispersion stabilizer. Compared with products by the process of the gel polymerization, the polymers or copolymers dispersions have lower bulk(apparent) viscosity and can be dissolved rapidly in water and have not gel in the water solution and has not pollution for environmental protection , and process of field application is more simple . Nalco. Chemical company and kyoritsu yuki co., Ltd have published patents about the dispersion copolymerization of water-soluble vinyl ionic monomers with acrylamide in aqueous media in nineties of the 20th century. The copolymer aqueous dispersions of a water-soluble cationic and anionic monomer with acrylamide have been prepared in us laboratory the storage stability and effect of done field experiment of in inverse emulsification are excellent. These polyelectrolytes have been widely used for mining and petroleum production particularly secondly and thirdly recovery oil treatment waste water dewatering of sludge of municipal and various industries sludge, and papermaking etc.