Hydrophilic polyester-urethane cellular products and method of preparing same

Claim 1

A METHOD OF MAKING A HYDROPHILIC FOAMED POLYESTER-URETHANE PRODUCT WHICH COMPRISES CONTACTING WITH AN AQUEOUS SOLUTION OF A SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFITES AND BISULFITES, AT A PH RANGE OF ABOUT 5.5 TO ABOUT 13 AND AT A TEMPERATURE FROM ABOUT 20* TO ABOUT 100*C., A FOAMED MASS OF A REACTION PRODUCT OF AN ORGANIC POLYISOCYANATE WITH A POLYESTER RESIN COMPRISING A POLYESTER CONDENSATION PRODUCT OF A MIXTURE COMPRISING POLYHYDRIC ALCOHOL AND DICARBOXYLIC ACID COMPONENTS, SAID COMPONENTS BEING IN THE PROPORTION OF 1.2 TO 1.8 MOLE OF POLYHYDRIC ALCOHOL TO EACH MOLE OF DICARBOXYLIC ACID, THE DICARBOXYLIC ACID COMPONENT COMPRISING 90 TO 65 MOLE OF PERCENT OF SATURATED DIBASIC ALIPHATIC ACID HAVING NOT MORE THAN EIGHTEEN CARBON ATOMS AND 10 TO 35 MOLE PERCENT OF AN UNSATURATED COMPOUND SELECTED FROM THE GROUP CONSISTING OF MALEIC ACID, FUMARIC ACID, ITACONIC ACID, LOWER ALKYL DIESTER OF ONE OF SAID UNSATURATED ACIDS, AND MIXTURES THEREOF, SAID LOWER ALKYL PORTION CONTAINING 1-2 CARBON ATOMS, SAID FOAMED POLYESTER-URETHANE MASS CONTAINING POINTS OF ETHYLENIC UNSATURAION WHEREBY THE SALT ADDS ACROSS POINTS OF UNSATURATION TO INTERDUCE HYDROPHILIC GROUPS SELECTED FROM THE GROUP CONSISTING OF SULFONATES AND SULFONIC ACID GROUPS.

Claim 2

A METHOD OF MAKING A HYDROPHILIC FOAMED POLYESTER-URETHANE PRODUCT WHICH COMPRISES CONTACTING WITH AN AQUEOUS SOLUTION OF A SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFITES AND BISULFITES, AT A PH RANGE OF ABOUT 5.5 TO ABOUT 13 AND AT A TEMPERATURE FROM ABOUT 20* TO ABOUT 100*C., A FOAMED MASS OF A REACTION PRODUCT OF AN ORGANIC POLYISOCYANATE WITH A POLYESTER RESIN COMPRISING A POLYESTER CONDENSATION PRODUCT OF A MIXTURE COMPRISING POLYHYDRIC ALCOHOL AND DICARBOXYLIC ACID COMPONENTS, SAID COMPONENTS BEING IN THE PROPORTION OF 1.2 TO 1.8 MOLE OF POLYHYDRIC ALCOHOL TO EACH MOLE OF DICARBOXYLIC ACID, THE DICARBOXYLIC ACID COMPONENT COMPRISING 90 TO 65 MOLE OF PERCENT OF SATURATED DIBASIC ALIPHATIC ACID HAVING NOT MORE THAN EIGHTEEN CARBON ATOMS AND 10 TO 35 MOLE PERCENT OF AN UNSATURATED COMPOUND SELECTED FROM THE GROUP CONSISTING OF MALEIC ACID, FUMARIC ACID, ITACONIC ACID, LOWER ALKYL DIESTER OF ONE OF SAID UNSATURATED ACIDS, AND MIXTURES THEREOF, SAID LOWER ALKYL PORTION CONTAINING 1-2 CARBON ATOMS, SAID FOAMED POLYESTER-URETHANE MASS CONTAINING POINTS OF ETHYLENIC UNSATURAION WHEREBY THE SALT ADDS ACROSS POINTS OF UNSATURATION TO INTERDUCE HYDROPHILIC GROUPS SELECTED FROM THE GROUP CONSISTING OF SULFONATES AND SULFONIC ACID GROUPS.