Hybrids—materials having at least two different components —are of increasing importance in elastoplastics because of their ability to provide toughness and high impact strength. The components may be combined at a macro, micro or molec ular level, yielding composites, polymer blends, and intra molecular hybrids, respectively. Among the important hybrids examined are automobile tires, synthetic leathers, fiber-rein forced plastics, impact styrenes, ABS plastics, wool, thermo setting acrylics, urethanes, rubber-resin adhesives, nylon- epoxy adhesives, fluorochemical-modified polymers, improved ethylene-propylene rubbers. The possibility is suggested of creating the hybrid in the polymerization step.
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