RUBBER CRUMB-FILLED POLYURETHANE COMPOSITION FOR PREPARING LOW-MODULE OIL BENZO-RESISTANT ELASTOMERS Russian patent published in 2001 - IPC

FIELD: chemistry of polymers. SUBSTANCE: described is composition for preparing low-module oil-benzo-resistant materials having low hardness (10-30 Shore A units) comprising mixture of oligoestertriol and oligoestertriol with molecular weight of 2000, 2,4- toluylene diisocyanate and rubber crumb of 160-500 mcm fraction at weight ratio of oligoestertriol, oligoestertriol and 2,4-toluylene diisocyanate of 0.925:0.075:1.5 and weight fraction of rubber crumb of 10-20%. EFFECT: improved deformation-strength characteristics of elastomers with oil benzo-resistance and low values of elasticity and hardness module remaining unchanged. 2 tbl