| abstract |
The present invention relates to a waterborne polyacrylamide emulsion, the preparation thereof and the application thereof. The waterborne polyacrylamide emulsion is prepared by the free radical polymerization of the nonionic monomer with the double bond or combined polymerization of the nonionic monomer with the double bond with the cation, using multi inorganic salt solution as the mediums and using polyelectrolyte as the stabilizer. The appearance of the product is cream white, the particle diameter is about 10-100 Mum, the emulsion has high solution rate, and the production process without any organic solvent is innocuous and environmental protection. Compared with the dry powder and the microemulsion of the traditional polyacrylamide, the emulsion of the invention is safe and convenient in use, is capable of being used in the treatment of the oilfield produced liquid combined with the demulsifier to promote the oil-water separation to increase the dehydration of crude oil, wherein the water quality of the dehydrate water. The product can be used as an oil-water separating agent of the oily wastewater in industry and as a water purificant, also be used for sewerage treatment of the oil field and the city as an organic flocculent, and be used in paper making field as a filter aid, a retention aid, a paper strengthening agent, etc. |