| 摘要 |
FIELD: rubber industry. ^ SUBSTANCE: invention relates to rubber coverings used for sports grounds and insulation coatings in construction. Composition contains, as base material, 100 wt parts hydroxyl-containing polybutadiene rubber composed of (microstructure): 10-18% cis-1,4, 18-28% trans-1,4, 58-70% 1,2-units with molecular mass 2100 content of hydroxyl groups 0.88-1.36%, or molecular mass 5000-5300 and content of hydroxyl groups 0.6-0.8%; 10-36 wt parts polyisocyanate; and 0.001-3.0 wt parts urethane-formation catalyst. Composition may further contain moisture-absorption component, filler, plasticizer, low-molecular weight alcohol or aminophenol component, alkylphenol antiaging agent, pigment, and rheological property modifier. ^ EFFECT: improved wear resistance and mechanical properties of coverings. ^ 8 cl, 2 tbl |
