| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a composition for forming a light-weighted artificial soil having a good water-retaining property, water-permeability and an adhesivity of particulate materials, and having a high strength as a formed material. <P>SOLUTION: This composition for forming the artificial soil contains (A) a polyisocyanate component consisting mainly of a polymeric MDI; (B-1) a first polyol component consisting of a polyoxyalkylene polyol having 1-4 mean number of functional groups and 2,000-6,000 average molecular weight; (B-2) a second polyol component consisting of a polyoxyalkylene polyol having 2-8 mean number of functional groups and 250-800 average molecular weight; (B-3) a third polyol component consisting of a diol having 50-210 average molecular weight; (C) a foaming agent consisting of water; (D) a silicone-based foam-adjusting agent; (E) a urethane-forming catalyst; and (F) particulate materials by (20-65):(15-70):(5-20) mass ratio of [(B-1):(B-2):(B-3)]. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
