Process for preparing foamed polyurethane materials

Claim 1

AN IMPROVED PROCESS FOR THE MANUFACTURE OF FOAMED POLYURETHANE MATERIALS COMPRISING SUBSTANTIALLY SIMULTANEOUSLY INTERACTING AN ORGANIC POLYISOCYANATE, A HYDROXYL-CONTAINING POLYETHER HAVING PREDOMINANTLY SECONDARY HYDROXYL END GROUPS, WATER AND, AS A CATALYST, A BASIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES OF A MEMBER OF THE GROUP CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS AND FULLY SUBSTITUTED QUATERNARY AMMONIUM RADICALS CARRYING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL AND ARALKYL GROUPS, AND SALTS OF ACIDS HAVING AN ACID STRENGTH LESS THAN THAT OF HYDROCHLORIC ACID OF A MEMBER OF THE GROUP CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS AND FULLY SUBSTITUTED QUATERNARY AMMONIUM RADICALS CARRYING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL AND ARALKYL GROUPS.