| 摘要 |
PURPOSE:To provide the title inexpensive soil, easy to produce, also suitable for mass production, by comprising a specific granular zeolite, a water- absorptive polymer, and PVA in specified proportion. CONSTITUTION:The objective soil comprising (A) 100pts.wt. granular zeolite having fine open cells (pref. ca. 200-300mum in size, ca. 50-150m<2>/g in specific surface area, and 20-40ml/g in fine cell volume), (B) 1-20pts.wt. of a water- absorptive polymer pref. consisting of polyacrylic alkali salt crosslinked form- based one, and (C) 1-15pts.wt. of PVA pref. >=(esp. ca. 80-98) in saponification degree, and 1,000-2,000 (esp. ca. 1,500-1,800) in polymerization degree. |
