Properties of EVM compounds in relation to the vinyl acetate content of the polymer

Typical properties of ethylene-vinyl acetate (EVM) copolymers were determin ed. These properties were compared with the chemically similar polyacrylate polymers and ethylene-methylacrylate copolymers, Common tendencies relatin g to the composition were established. A reduction in the ethylene content caused an increase in oil resistance and a fall in low-temperature flexibil ity. A new process which enables higher viscosities to be achieved helps to remove certain difficulties in processing. EVM is a cost-effective alterna tive to polyacrylate rubber grades.