Cellular polyurethane plastics and preparation of same

Claim 1

A PROCESS FOR THE PREPARATION OF A CELLULAR POLYURETHANE PLASTIC HAVING A 25 PERCENT COMPRESSION DEFLECTION PROPERY AT REST WITHIN THE RANGE OF FROM ABOUT 0.5 LBS./SQ. INCH TO ABOUT 6 LBS./SQ. INCH AND A DENSITY WITHIN THE RANGE OF FROM ABOUT 1.5 LBS./CU. FOOT TO ABOUT 7 LBS./CU. FOOT WHICH COMPRISES REACTING (1) FROM ABOUT 0.5 WEIGHT PERCENT TO ABOUT 2.5 WEIGHT PERCENT WATER, (2) FROM ABOUT 20 WEIGHT PERCENT TO ABOUT 40 WEIGHT PERCENT OF AN ORGANIC DIISOCYANATE AND (3) FROM ABOUT 60 WEIGHT PERCENT TO ABOUT 80 WEIGHT PERCENT OF A MIXTURE OF A TRIHYDRIC POLYALKYLENE ETHER HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 1000 TO ABOUT 5000 WITH FROM ABOUT 10 WEIGHT PERCENT TO ABOUT 18 WEIGHT PERCENT BASED ON THE WEIGHT OF SAID TRIHYDRIC POLYALKYLENE ETHER OF A TETRAHYDRIC ORGANIC COMPOUND HAVING A MOLECULAR WEIGHT BELOW ABOUT 600 AND SELECTED FROM THE GROUP OCNSISTING OF PENTAERYTHRITOL, N,N,N'',N''-TETRAKIS (2-HYDROXY PROPYL) ETHYLENE DIAMINE, 1,2,4,5-HYDROXY PENTANE AND N,N,N'',N''-TETRAKIS (2-HYDROXY PROPYL) HEXAMETHYLENE DIAMINE, THE COMPOSITE HYDROXYL NUMBER OF SAID MIXTURE OF POLYHYDRIC POLYALKYLENE ETHER AND TETRAHYDRIC ORGANIC COMPOUND BEING WITHIN THE RANGE OF FROM ABOUT 125 TO ABOUT 180, THE SUM OF (1), (2) AND (3) BEING AT MOST 100 WEIGHT PERCENT.