Urethanes made from 4-substituted toluene dhsocyanate and a polyether or polyester

Claim 1

A POLYURETHANE COMPOSITION COMPRISING THE REACTION PRODUCT OF (1) AT LEAST ONE POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) A POLY(ALKYLENE ETHER) POLYOL HAVING TERMINAL HYDROXY GROUPS, (A-1) A POLYESTER HAVING TERMINAL HYDROXY GROUPS AND (A-2) A POLYSTER HAVING TERMINAL CARBOXY GROUPS, AND (2) AN ORGANIC POLYISOCYANATE COMPOSITION SELECTED FROM THE GROUP CONSISTING OF (B) A MIXTURE OF ORGANIC POLYISOCYANATES OF A 4SUBSTITUTED TOLYLENE DISOCYANATE AND A HYDROCARBON POLYISOCYANATE OTHER THAN SAID DISOCYANATE, THE ORGANIC POLYISOCYANATE OTHER THAN SAID 4-SUBSTITUTED DIISOCYANATE BEING PRESENT IN AN AMOUNT NOT EXCEEDING 25% OF THE TOTAL CHEMICAL EQUIVALENTS OF SAID POLYISOCYANATE MIXTURE, AND (B-1) A 4-SUBSTITUTED TOLYLENE DIISOCYANATE, EACH OF SAID 4-SUBSTITUTED TOLYLENE DIISOCYANATES BEING SELECTED FROM THE GROUP CONSISTING OF 4-TERT-BUTYL-2,6-TOLYLENE DIISOCYANATE, 4-ISOPROPYL-2,6-TOLYLENE DIISOCYANATE, 4-METHOXY-2,6TOLYLENE DIISOCYANATE, N,N-DIMETHYL-2,6-DIISOCYANATO-PTOLUIDINE, AND 4-CYANO-2,6-TOLYLENE DIISOCYANATE, AND THE MOLAR RATIO OF SAID POLYMER TO SAID POLYISOCCYANATE COMPOSITION BEING FROM ABOUT 1:05 TO 1:12.