ethylidene


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eth·yl·i·dene

(eth'il-i-dēn),
The radical CH3CH=.
Synonym(s): ethidene

ethylidene

/eth·yl·i·dene/ (eth´il-ĭ-dēn) the bivalent radical CH3CHdbond; its chloride derivative is used as a solvent and fumigant and is toxic and irritant.
References in periodicals archive ?
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.
The EPDM rubber used has the following characteristics: An ethylene/propylene ratio of 52/48, the third monomer ethylidene norbornene (ENB) content is 4.
The advanced performance characteristics of V1703P are shown in figure 1 relative to other commercial electrical EPDM grades made with 1,4-hexadiene (HEX) and ethylidene norbornene (ENB).
Each grade is synthesized with a different diene termonomer; vinyl norbornene, 1,4-hexadiene and ethylidene norbornene, and are referred to here as EPDM-VNB, EPDM-HEX and EPDM-ENB, respectively.
and EPDM based on ethylidene norbornene (ENB) as a diene monomer (Keltan), supplied by DSM Elastomers Europe, were used as commercially available.
EPDM polymer was a high molecular grade with 8 wt% of ethylidene norbornene (ENB).
The polymers contain ethylidene norbornene (ENB) and/or dicyclopentadiene (DCPD) in varying quantities.
6 MPa Mineral filler Particle size 20 [micro]M (T20A) (maximum) EPDM Ethylene 73 mol%, (Royalene IM 7200) Propylene 23 mol%, Ethylidene norbome 4 mol% T.
The enhanced reactivity of metallocene catalysts towards ethylidene norbornene, over that observed with traditional Zeigler-Natta supported catalyst systems, allowed the commercialization of EPDM based on proprietary metallocene technology (refs.
60]) with the hindered double bond of ethylidene norbornene in EPDM at 105 [degrees] C by cycloaddition.
Unsaturation content of EPDM: Ethylidene norbornene and dicyclopentadiene