POLYURETHANE MIXTURE Russian patent published in 1999 - IPC

FIELD: chemical industry. SUBSTANCE: polyurethane mixture comprises firm polyurethane having at least two end groups and each end group comprises end isocyanate and polyether; second polyurethane has at least two end groups; each end group contains end isocyanate group and non-functional group, and third polyurethane has at least two end groups, one end group containing end isocyanate and polyether, and other end group containing end isocyanate and non- functional group wherein each polyurethane is present in amount from 5.0 to 90 mole %. EFFECT: adequate thickening power and desired stability to forming run- offs. 7 cl, 19 ex, 12 tbl