| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: composition is characterised with viscosity 1500-25000 mPas at 25C and contains fine-dispersed material 1-80 wt % at total polyol composition in polyol with equivalent weight 500 to 5000 and average nominal hydroxyl functionality 2 to 6, representing polyoxyethylene polyoxypropylene polyol with oxyethylene content 15-49 wt % at total oxyalkylene where oxyethylene group 20-80% being arranged on ends of polymer chains. Fine-dispersed material contains polyol reaction interaction with equivalent weight to 400, and diphenylmethandiisocyanate optionally containing its homologs with isocyanate functionality 3 or more, and/or modified versions of such polyisocyanates. There is also disclosed production process of such polyol compositions, and another polyol composition being mixed declared polyol composition and polyesterpolyol with average equivalent weight 500 or more, other than used to produce the composition specified above. There is also disclosed production process of elastic polyurethane foam with using said polyol compositions. Block (plate-shaped) or moulded elastic foam plastics are made of such polyol compositions. ^ EFFECT: improved load-sensitive characteristics, good fire resistance, easily recycled, internal defectless. ^ 10 cl, 2 tbl |
