Ethylene-propylene-diene-monomer abbreviation

EPDM. Abbreviation for a terpolymer elastomer made from ethylene-propylene diene monomer. 

Abbreviations-. EPDM, ethylene-propylene-diene monomer (a copolymer elastomer) CTBN, carboxy-terminated butadiene nitrile (an elastomer prepolymer) ABS, acrylonitrile-butadiene-styrene (a complex latex structure used both independently and to toughen other polymers) SBR, styrene-butadiene rubber (an elastomer). 

The second class is made up of elastomer/thermoplastic blends, abbreviated TEO. Typical of this class is a dispersion of 20-30 parts of rubber based on ethylene-propylene-diene monomer (EPDM) in a continuous phase of 70-80 parts of a plastic such as isotactic polypropylene. Partial covalent cross-linking of the... 

The preferred systematic abbreviation for ethylene-propylene terpolymer, also designated EPT. The use of the term EPR for a copolymer of ethylene and propylene, and the use of EPT for a terpolymer of these monomers with a small amount of a diene to provide double bonds is common but is not recommended. Epichlorohydrin... 

Whdi ethylene is copolymerized with propylene, the amorphous, rubbery material called ethylene propylene rubber PM - from ethylene propylene monomers) results if the ethylene content is high commercial polymers may contain 30 to 50% of ethylene units. In order to obtain a sulfur vul-canisable material, a small percentage of a third monomer (3 to 10% of a diene monomer, for example, ethylidene nor-bornene) is incorporated so as to make a terpolymer, this ter-polymer may be referred to as EPDM. An abbreviation which covers both types of ethylene propylene rubber is EP(D)M usually, all types of this rubber have a propylene content of between 25 and 55% by weight. 

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