Non-elastomeric polyurethane compositions containing cyclic polyethers

Claim 1

A NON-ELASTOMERIC, NON-CELLULAR DENSE, SOLID POLYMER HAVING A DENSITY OF AT LEAST ABOUT 1 GRAM/CC RESULTING FROM ADMIXTURE OF THE COMPONENTS OF A COMPOSITION COMPRISING: A. A POLYMER POLYOL HAVING FROM 3 TO ABOUT 8 HYDROXYL GROUPS AND A HYDROXYL EQUIVALENT WEIGHT BETWEEN ABOUT 75 AND ABOUT 230, B.AN ORGANIC POLYISOCYANATE, C. A LIQUID MODIFIER COMPOUND HAVING A BOILING POINT ABOVE ABOUT 150*C SELECTED FROM THE GROUP CONSISTING OF CYCLIC POLYETHERS AND MIXTURES THEREOF, SAID POLYETHERS BEING CYCLIC TETRAMERS AND ABOVE OF OF ETHYLENE OXIDE, PROPYLENE OXIDE, BUTYLENE OXIDE OR EPICHLOROHYDRIN, AND D. A NON-AMINE-CONTAINING CATALYST FOR URETHANE FORMATION, WHICH IS AN ORGANO METAL COMPOUND; WHEREIN COMPONENTS (A) AND (B) ARE PRESENT IN AMOUNTS SO AS TO PROVIDE AN NCO:OH RTIO OF FROM ABOUT 0.8:1 TO ABOUT 2:1, COMPONENT (C) IS PRESENT IN QUANTITIES OF FROM ABOUT 20 TO ABOUT 50 PERCENT WITH THE PROVISO THAT WHEN COMPONENT (B) IS AN NCO-CONTAINING PREPOLYMER CONTAINING LESS THAN ABOUT 40% NCO BY WEIGHT, COMPONENT (C) IS PRESENT IN QUANTITIES OF FROM ABOUT 10% TO ABOUT 50% BY WEIGHT OF THE SUM OF COMPONENTS (A), (B), AND (C); AND COMPONENT (D) IS PRESENT IN QUANTITIES OF FROM ABOUT 0.2 TO ABOUT 10 PERCENT BY WEIGHT OF THE SUM OF THE WEIGHTS OF COMPONENTS (A), (B) AND (C); AND WHEREIN SAID POLYMER CAN BE DEMOLDED WITHIN LESS THAN ABOUT 5 MINUTES, WITHOUT THE APLICATION OF AN EXTERNAL SOURCE OF HEAT, AFTER ADMIXTURE OF SAID COMPOSITION.