Polyurethane catalyst composition and method for preparing cellular polyurethane using same

Claim 1

A METHOD FOR MAKING A CELLULAR POLYURETHANE PLASTIC WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE, A POLYALKYLENE ETHER ALCOHOL HAVING FROM 2 TO 4 HYDROXYL GROUPS AND A MOLECULAR WEIGHT OF AT LEAST ABOUT 500 AND AN HYDOXYL NUMBER OF NOT MORE THAN ABOUT 225 AND WATER IN A REACTION MIXTURE CONTAINING FROM ABOUT 0.01 PART TO ABOUT 0.1 PART OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF A TRIALKYL TIN OXIDE IN WHICH THE ALKYL GROUPS CONTAIN FROM 1 TO 8 CARBON ATOMS, A DIALKYL TIN CHLORIDE IN WHICH THE ALKYL GROUPS CONTAIN FROM 1 TO 8 CARBON ATOMS, A DIALKYL TIN OXIDE IN WHICH THE ALKYL GROUPS CONTAIN FROM 1 TO 8 CARBON ATOMS, AND A DIALKYL TIN SALT OF A CARBOXYLIC ACID HAVING FROM 1 TO 8 CARBON ATOMS IN WHICH THE ALKYL GROUPS CONTAIN FROM 1 TO 8 CARBON ATOMS, FROM ABOUT 0.2 PARTS TO ABOUT 1.5 PART OF AN N-ALKYL MORPHOLINE SELECTED FROM THE GROUP CONSISTING OF N-ETHYL MORPHOLIEN AND N-METHYL MORPHOLINE AND FROM ABOUT 0.1 PART TO ABOUT 0.3 PART TRIETHYLENE DIAMINE PER 100 PARTS BY WEIGHT POLYALKYLENE ETHER ALCOHOL.