Preparation of cellular polyurethane resins

Claim 1

A METHOD OF FORMING A FOAMED POLYURETHANE RESIN WHICH COMPRISES MIXING AND FOAMING TWO COMPONENTS, (A) AND (B), COMPONENT (A) BEING AN EMULSION OF (1) A POLYESTER WHICH IS THE ESTERIFICATION PRODUCT OF A DICARBOXYLIC ACID AND A MIXTURE OF A PAIR OF ALCOHOLS, ONE ALCOHOL BEING DIHYDRIC AND BEING SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, DIPROPYLENE GLYCOL, AND POLYETHYLENE GLYCOL, AND THE SECOND ALCOHOL BEING POLYHYDRIC AND BEING SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, PENTAERYTHRITOL, TRIMETHYLOLETHANE, TRIMETHYLOLPROPANE, AND MANNITOL, SAID POLYESTER BEING OF A HYDROXYL VALUE IN THE RANGE OF ABOUT 50 TO ABOUT 600, AND AN ACID NUMBER IN THE RANGE OF ABOUT 1 TO ABOUT 20, (2) ABOUT 0.23 TO 10 PERCENT OF WATER, (3) ABOUT 1 TO 10 PERCENT OF AN EMULSIFYING AGENT, AND (4) ABOUT 0.2 TO 10 PERCENT OF A TERTIARY AMINE, THE FOREGOING PERCENTAGES BEING BASED UPON THE POLYESTER, COMPONENT (B) BEING A REACTION PRODUCT OF A POLYESTER OF A DICARBOXYLIC ACID AND A MIXTURE COMPRISING A PAIR OF ALCOHOLS, ONE ALCOHOL BEING DIHYDRIC AND BEING SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, DIPROPYLENE GLYCOL, AND POLYETHYLENE GLYCOL, AND THE OTHER ALCOHOL OF THE MIXTURE BEING A POLYHYDRIC ALCOHOL AND BEING SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, PENTAERYTHRITOL, TRIMETHYLOLETHANE, TRIMETHYLOLPROPANE, AND MANNITOL, THE LATTER-MENTIONED OF SAID POLYESTERS BEING OF A HYDROXYL VALUE IN THE RANGE OF ABOUT 50 TO ABOUT 600, AND AN ACID NUMBER IN THE RANGE OF ABOUT 1 TO 20, THE REACTION PRODUCT CONTAINING ABOUT 25 TO ABOUT 1000 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF POLYESTER OF AN ORGANIC DIISOCYANATE, THE RATIO IN PARTS BY WEIGHT OF THE POLYESTER IN SAID REACTION PRODUCT IN COMPONENT (B) TO THE POLYESTER IN COMPONENT (A) BEING WITHIN A RANGE BETWEEN ABOUT 4:1 AND ABOUT 1:2.

Claim 2

A METHOD OF FORMING A FOAMED POLYURETHANE RESIN WHICH COMPRISES MIXING AND FOAMING TWO COMPONENTS, (A) AND (B), COMPONENT (A) BEING AN EMULSION OF (1) A POLYESTER WHICH IS THE ESTERIFICATION PRODUCT OF A DICARBOXYLIC ACID AND A MIXTURE OF A PAIR OF ALCOHOLS, ONE ALCOHOL BEING DIHYDRIC AND BEING SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, DIPROPYLENE GLYCOL, AND POLYETHYLENE GLYCOL, AND THE SECOND ALCOHOL BEING POLYHYDRIC AND BEING SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, PENTAERYTHRITOL, TRIMETHYLOLETHANE, TRIMETHYLOLPROPANE, AND MANNITOL, SAID POLYESTER BEING OF A HYDROXYL VALUE IN THE RANGE OF ABOUT 50 TO ABOUT 600, AND AN ACID NUMBER IN THE RANGE OF ABOUT 1 TO ABOUT 20, (2) ABOUT 0.23 TO 10 PERCENT OF WATER, (3) ABOUT 1 TO 10 PERCENT OF AN EMULSIFYING AGENT, AND (4) ABOUT 0.2 TO 10 PERCENT OF A TERTIARY AMINE, THE FOREGOING PERCENTAGES BEING BASED UPON THE POLYESTER, COMPONENT (B) BEING A REACTION PRODUCT OF A POLYESTER OF A DICARBOXYLIC ACID AND A MIXTURE COMPRISING A PAIR OF ALCOHOLS, ONE ALCOHOL BEING DIHYDRIC AND BEING SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, DIPROPYLENE GLYCOL, AND POLYETHYLENE GLYCOL, AND THE OTHER ALCOHOL OF THE MIXTURE BEING A POLYHYDRIC ALCOHOL AND BEING SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, PENTAERYTHRITOL, TRIMETHYLOLETHANE, TRIMETHYLOLPROPANE, AND MANNITOL, THE LATTER-MENTIONED OF SAID POLYESTERS BEING OF A HYDROXYL VALUE IN THE RANGE OF ABOUT 50 TO ABOUT 600, AND AN ACID NUMBER IN THE RANGE OF ABOUT 1 TO 20, THE REACTION PRODUCT CONTAINING ABOUT 25 TO ABOUT 1000 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF POLYESTER OF AN ORGANIC DIISOCYANATE, THE RATIO IN PARTS BY WEIGHT OF THE POLYESTER IN SAID REACTION PRODUCT IN COMPONENT (B) TO THE POLYESTER IN COMPONENT (A) BEING WITHIN A RANGE BETWEEN ABOUT 4:1 AND ABOUT 1:2.