Production of a cellular polyvinyl polyester plastic composition

Claim 1

THE METHOD OF MAKING A CELLULAR PLASTIC COMPOSITION COMPRISING MIXING (A) A POLYVINYL CHLORIDE PLASTISOL CONTAINING POLYVINYL CHLORIDE AND A PLASTICIZER FOR POLYVINYL CHLORIDE, SAID PLASTICIZER BEING PRESENT IN THE PLASTISOL IN THE PROPORTION OF BETWEEN ABOUT 40 AND ABOUT 150 PARTS BY WEIGHT FOR EACH 100 PARTS BY WEIGHT OF THE POLYVINYL RESIN, (B) AN ISOCYANATE REACTIVE POLYHYDRIC ALCOHOL-POLYCARBOXYLIC ACID POLYESTER RESIN HAVING AN ACID NUMBER BETWEEN ABOUT 15 AND ABOUT 60 AND AN HYDROXYL NUMBER BETWEEN ABOUT 30 AND 500, (C) A REACTIVE MONOMERIC ORGANIC DIISOCYANATE AND (D) WATER IN AN AMOUNT BETWEEN THE LIMITS OF 0.1% AND 10% BASED ON THE WEIGHT OF SAID POLYESTER RESIN, SAID POLY ESTER RESIN BEING PRESENT IN THE COMPOSITION IN THE PROPORTION OF ABOUT 2 1/2 TO ABOUT 50 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID PLASTISOL, SAID DIISOCYANATE BEING PRESENT IN THE COMPOSITION IN THE PROPORTION OF BETWEEN 25% AND 500% BY WEIGHT TAKEN ON THE WEIGHT OF SAID REACTIVE POLYESTER AND BETWEEN ABOUT 7.5 AND ABOUT 60 PARTS BY WEIGHT FOR EACH 100 PARTS BY WEIGHT OF SAID PLASTISOL, AND HEAT-REACTING THE RESULTING MIXTURE AT A TEMPERATURE NOT EXCEEDING 350*F. TO FORM A SET CELLULAR MASS.