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Ethylidene

   Also found in: Medical 0.02 sec.
E`thyl´i`dene
1.(Chem.) An unsymmetrical, divalent, hydrocarbon radical, C2H4 metameric with ethylene but written thus, CH3.CH= to distinguish it from the symmetrical ethylene, CH2=CH2. Its compounds are derived from aldehyde. Formerly called also ethidene.


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Non-conjugated diene monomers such as ethylidene norbornene (ENB), hexadiene (HX) and dicyclopentadiene (DCPD) are added to ethylene propylene polymers to provide unsaturation sites for curing purposes.
Factors influencing low temperature performance of EPDM compounds by Lanxess, Don Tsou / Rubber World
The study determined that economically, the EPDM ethylidene norbornene (ENB)talyst systems based on transition metals, suchtention for EPDM production.
SRI Consulting Study Reveals New Generation EPDM Technologies by Business Wire
The EPDM rubber used has the following characteristics: An ethylene/propylene ratio of 52/48, the third monomer ethylidene norbornene (ENB) content is 4.
Using powdered factory scraps in EPDM compounds. (Tech Service) by De, S.K. / Rubber World
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