Epoxy resin elastomers

Claim 1

A CURED FLEXIBLE ELASTOMEIC THERMOSET RESIN COMPOSITION WHICH IS STABLE AGAINST DETERIORATION WHEN SUBJECTED TO A TEMPERATURE BETWEEN ABOUT -30*F. AND ABOUT 158*F., WHICH FORMS HIGHLY TENACIOUS BONDS WITH SOLID SURFACES IN CONTACT THEREWITH DURING CURE, AND WHICH DOES NOT VISIBLY DISTROT IMAGES VIEWED THERE THROUGH, CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF: (A) AN EPOXIDE COMPONENT HAVING AN AVERAGE OF BETWEEN ABOUT 1.5 AND 2.0 THERMINAL OXIRANE GROUPS PER MOLECULE, OF WHICH SAID OXIRANE GROUPS ARE THE ONLY FUNCTIONAL GROUPS THEREOF ENTERING INTO SAID REACTION, SELECTED FROM THE CLASS CONSISTING OF OXIDES OF CYCLIC AND DICYCLIC DIOLEFINES, GLYCIDLY ETHERS OF POLYHYDRIC ALIPHATIC ALCOHOLS HAVING AN EPXOIDE EQUIVALENT WEIGHT OF BETWEEN ABOUT 115 AND ABOUT 450, AND GLYCIDYL OTHERS AND POLYETHERS OF POLYHYDRIC PHENOLS HAVING AN EPOXIDE EQUIVALENT WEIGHT OF BETWEEN ABOUT 174 AND BOUT 1,000, AND MIXTURES OF SAID EPOXIDE COMPONENTS; (B) AN EPOXIDE COMPONENT HAVING AN AVERAGE OF ABOUT ONE TERMINAL OXIRANE GROUP PER MOLE, OF WHICH SAID OXIRANE GROUP IS THE ONLY FUNCTIONAL GROUP THEREOF ENTERING INTO SAID REACTION; (C) A POLYOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, POLYMETHELYENE GLYCOLS, GLYCEROL, AND POLYOXALKYLENE GLYCOLS HAVING THE FORMULA: