Rubberlike cured polyesters containing calcium silicate and process of producing same

Claim 1

A PROCESS OF PREPARING A RUBBER-LIKE RESINOUS PRODUCT WHICH COMPRISES HEATING SUBSTANTIALLY EQUIVALENT PROPORTIONS OF A SATURATED ALIPHATIC DICARBOXYLIC ACID HAVING AT LEAST FOUR CARBON ATOMS BETWEEN THE TWO CARBOXYL GROUPS AND A SUBSTANTIALLY EQUIMOLAR MIXTURE OF ETHYLENE GLYCOL AND DIETHYLENE GLYCOL IN THE PRESENCE OF FROM 2 TO 6 MOL PERCENT, BASED ON THE SATURATED DICARBOXYLIC ACID CONTENT OF AN ALPHA, BETA UNSATURATED ALIPHATIC HYDROCARBON DICARBOXYLIC ACID AND FROM 2 TO 3.5 MOL PERCENT, BASED ON THE SATURATED DICARBOXYLIC ACID CONTENT PLUS THE ALPHA, BETA UNSATURATED ACID CONTENT, OF A POLYHYDRIC ALCOHOL CONTAINING AT LEAST THREE HYDROXYL GROUPS, BLENDING THE RESINOUS REACTION OBTAINED WITH AN ORGANIC PEROXIDE CURING CATALYST AND AN INERT FILLER, SAID FILLER BEING SELECTED FROM THE GROUP CONSISTING OF (1) CALCIUM SILICATE, (2) A MIXTURE CONSISTING OF CALCIUM SILICATE AND MAGNESIUM CARBONATE, AT LEAST ABOUT 15% BY WEIGHT OF SAID MIXTURE BEING CALCIUM SILICATE, AND (3) A MIXTURE CONSISTING OF CALCIUM SILICATE AND A FILLER OTHER THAN MAGNESIUM CARBONATE, AT LEAST 50% BY WEIGHT OF SAID MIXTURE BEING CALCIUM SILICATE, AND CURING THE BLENDED RESINOUS REACTION PRODUCT BY HEATING.