Preparation of water-soluble acrylamide high polymeric composition

Abstract

Abstract PURPOSE: To obtain a composition of good quality stability having improved solubility in water with low dusting property, by incorporating a polymeric powder with a concentrated aqueous solution of an inorganic salt and concentrated aqueous solution of polyethylene glycol which will not dissolve the polymeric powder, kneading the resultant mixture uniformly, and pulverizing the resultant kneaded mixture. CONSTITUTION: 50W90wt% water-soluble acrylamide high polymeric powder, having the maximum particle diameter ≤16 mesh, and containing 70wt% or less fine particles having a particle diameter ≤200 mesh is incorporated with 9W49wt% highly concentrated aqueous solution of an inorganic salt, preferably sodium sulfate or sodium carbonate with a salt concentration of 20wt% or more which will not substantially dissolve the polymeric powder and 1W10wt% aqueous solution of polyethylene glycol having an average molecular weight of 2,000W20,000 which will not substantially dissolve the polymeric powder in a concentration of 40W70wt%. The amount of water to be added is adjusted tpo 7W40wt% based on the final polymeric composition, and the mixture is kneaded with stirring into fine granules of grain size ≤3cm and then pulverized to a particle diameter ≤6 mesh. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Yoshihiro Kawamori
• 👤 Yoshiaki Okayama
• 👤 Kazuyuki Anraku

Bibliographic Details