| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to two-component composition for soil reinforcement by injection. The composition contains an isocyanate component and a hydroxyl component in equal volumes. The isocyanate component is polyphenylene polymethylene polyisocyanate containing 30-31% NCO groups. The hydroxyl component is a homogeneous mixture of an alkoxylated alkane diol or triol, with molecular weight of 370-600 or a mixture thereof, alkane diol or alkoxylated alkane diol with molecular weight of 60-200 and a urethane-formation catalyst. The urethane-formation catalyst is selected from a group comprising diazabicyclooctane, tin dibutyl dilaurate, dimethyl ethanolamine and methyl diethanolamine.EFFECT: composition has low viscosity and is not susceptible to demixing, while maintaining a low reaction temperature and limited foaming.2 tbl, 20 ex |
