| 摘要 |
PURPOSE:To granulate a highly water-absorptive resin powder extremely easily by using an aqueous liquid, which has heretofore been thought impossible due to its high water absorptivity, by uniformly mixing the resin powder with the aqueous liquid in a high-speed rotary paddle mixer and crushing and granulating the product. CONSTITUTION:A highly water-absorptive resin powder (e.g., hydrogenated starch/acrylonitrile graft copolymer) is granulated by uniformly mixing it with an aqueous liquid (e.g., water or a water/water-miscible organic solvent mixture, wherein examples of the organic solvents include lower alcohols, glycerin and acetone) in a high-speed rotary paddle mixer and crushing and granulating the mixture. Said aqueous liquid may contain a deodorant, a plant growth substance or a water-soluble polymer, each soluble in the above aqueous liquid. In order to improve the performance of the highly water-absorptive powder, fine silica particles, carbon black or active carbon may be used jointly with above components. |
