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In major industrial polymers: Ethylene-propylene copolymers
…are known as EPM (ethylene-propylene monomer) and the latter as EPDM (ethylene-propylene-diene monomer). The copolymers contain approximately 60 percent by weight ethylene. A pronounced advantage of EPDM is that the residual carbon-carbon double bond (i.e., the double bond that remains after polymerization) is attached to the polymer chain rather…
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In elastomer: Polymers and elasticity
…BR), styrene-butadiene rubber (SBR), and ethylene-propylene monomer (EPM). SBR is a mixed polymer, or copolymer, consisting of two different monomer units, styrene and butadiene, arranged randomly along the molecular chain. (The structure of SBR is illustrated in the figure.) EPM also consists of a random arrangement of two monomers—in this…
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In ethylene-propylene copolymer
…is known as EPM (ethylene-propylene monomer) and the latter as EPDM (ethylene-propylene-diene monomer). The copolymers contain approximately 60 percent by weight ethylene.
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