Cellular plastics containing saturated and unsaturated polyester resins

Claim 1

A FOAM PRODUCT OBTAINED BY THE REACTION OF, IN APPROXIMATE PARTS BY WEIGHT, A POLYMERIZABLE UNSATURATED POLYESTER CONTAINING A PLURALITY OF ETHYLENIC GROUPS DERIVED FROM ALPHA, BETAETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS AND HAVING AN ACID NUMBER OF FROM 25 TO 60 AND WHEREIN THE RATIO OF THE HYDROXYL GROUPS TO THE CARBOXYL GROUPS OF THE ALKYD REACTANTS IS APPROXIMATELY 1 TO 1, A SATURATED POLYESTER RESIN OF THE CLASS WHICH WHEN CATALYZED WITH AN ORGANIC PERODIXE POLYMERIZATION CATALYST WILL NOT CROSS LINK WITH POLYMERIZABLE ETHYLENICALLY-UNSATURATED COMPOUNDS TO FORM THE THERMOSETTING POLYMERS, SAID RESINS BEING IN THE PROPORTION OF FROM 20 PARTS OF THE UNSATURATED RESIN TO 60 PARTS OF THE SATURATED RESIN TO 60 PARTS OF THE UNSATURATED RESIN TO 20 PARTS OF THE SATURATED RESIN, WATER IN THE PROPORTION OF FROM 0.25% TO 4.0% BY WEIGHT OF THE TOTAL WEIGHT OF THE RESINS, AN ORGANIC PEROXIDE POLYMERIZATION CATALYST IN THE PROPORTION OF FROM 1/2 TO 5% BY WEIGHT OF THE UNSATURATED RESIHN, FROM 10 TO 50 PARTS OF POLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER FOR EACH 100 PARTS OF THE UNSATURATED RESIN, AND FROM 17 TO 80 PARTS OF META-TOLUENE DIISOCYANATE FOR EACH 100 PARTS OF THE TOTAL COMBINED RESINS.