ethylene-propylene monomer
Quick Summary
Ethylene-propylene monomer (EPM) and ethylene-propylene-diene monomer (EPDM) are synthetic rubbers created by combining ethylene and propylene. These copolymers offer excellent resistance to electricity and ozone, along with good processing capabilities.1
EPM is made solely from ethylene and propylene, while EPDM includes a small amount of a diene, typically ethylidene norbornene or 1,4-hexadiene. Both types contain about 60% ethylene by weight and are produced using Ziegler-Natta catalysts.12
A key advantage of EPDM is that its reactive double bonds are on side groups, making it more resistant to weathering and sunlight than traditional diene polymers where double bonds are in the main chain. EPM is used in automotive parts and as a modifier for polypropylene. EPDM finds applications in automotive seals, wire insulation, hoses, and roofing. EPDM can also be blended with polypropylene to create thermoplastic elastomers used in products like shoes and sealing strips.12
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major industrial polymersEthylene-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…
Read More…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…
Read More- elastomerPolymers 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…
Read More…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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