ethylidene


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eth·yl·i·dene

(eth'il-i-dēn),
The radical CH3CH=.
Synonym(s): ethidene
References in periodicals archive ?
2-(2-(3-(2-(6-Carboxy-1-ethylquinolin-2(1H)-ylidene) ethylidene)-2-chlorocyclohex-1-en-1-yl)vinyl)-1,1-dimethyl-3-octyl-1H-benzo[e]indol-3-ium Iodide (Hepta2).
In this article, we focus on the effect of mixing for both amorphous (A) and semicrystalline (SC) EPDM polymers at a constant Mooney viscosity of 70, and an ethylidene norbornene (ENB) content of 5%.
(3) The glucoside moiety of etoposide its ethylidene [beta]-D-glucoside whereas in elenoside the glucoside moiety its [beta]-D-glucoside (Trujillo et al., 1990; Loike, 1984).
EPDM (KEP-570F, ethylidene norbornene type, [ML.sub.1+4] at 125[degrees]C = 59) was supplied by Kumho Petrochemical, Korea.
ethylene content of 55%, a propylene content of 39.5%, and ethylidene norbomene content of 5.5%.
EPDM (Vistalon 8600, ExxonMobil Chemical) is an EPDM containing 57.5 wt% of ethylene and 8.9 wt% of ethylidene norbornene.
While this holds true for metallocene EPM polymers such as V722, the effect is more pronounced in EPDM polymers that incorporate a diene such as ethylidene norbomene (ENB).
Experiments with EPDMs containing various diene monomers demonstrated that EPDM containing ethylidene norbornene is more reactive towards resole cross-linking than EPDM containing dicy-clopentadiene (DCPD), 1,4-hexadiene (HD), or vinyl norbornene (VNB), because of the relatively high stability of the cationic intermediate.
Residual butadiene will be more reactive to radical attack than the ethylidene nor bomene monomer, with reasoning parallel to the butadiene/ isoprene comparison.
In this work, an ethylidene norbornene (ENB) based ethylene-propylene-dienelerpolymer (EPDM) and a polypropylene (PP), both provided by ExxonMobil Chemical Co., were used as the elastomeric and thermoplastic components, respectively.
"Buna" EP T 6470 (LANXESS) EPDM, with ethylidene norborene, showing a diene of 3.9-5.1% and a Mooney viscosity of 52-62 M, was used as the rubber phase.