vinyl ether


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vinyl ether

[′vīn·əl ′ē·thər]
(organic chemistry)
CH2:CHOCH:CH2 A colorless, light-sensitive, flammable, explosive liquid; soluble in alcohol, acetone, ether, and chloroform, slightly soluble in water; boils at 39°C; used as an anesthetic and a comonomer in polyvinyl chloride polymers. Also known as divinyl ether; divinyl oxide.
References in periodicals archive ?
Analogous to the monomer based on cardanol, eugenol ethyl vinyl ether (EEVE) was produced from eugenol and 2-chloroethyl vinyl ether.
The high reactivity of the vinyl ether functional group and the appropriate choice of the polymerization system enabled linear polymers to be produced with relatively narrow molecular weight distributions.
For this, the vinyl ether precursor was mixed with a sulfonium salt hexafluorophosphate in the presence of a minimum amount of acetone acting as a co-solvent to form a homogeneous photolatent solution, which was then irradiated with an Hg-Xe lamp at an in-tensity of 200 mW/[cm.
Another interesting feature concerns the discrepancy between organic and inorganic reaction kinetics: after only 3 sec, hydrolysis has hardly started (<10%) whereas the vinyl ether conversion has already reached 95%.
Vinyl ether monomers with polyoxyethylene (EO) unit were used as intramolecular emulsifiers to obtain stable emulsions and to maintain the alternating FEVE polymer sequence.
One of the vinyl ether monomers used was hydroxy functional, in order to introduce crosslinking sites.
The numerical values of the fitting parameters for the kinetic constants are reported in Table 1 for both the vinyl ether and the cyclo epoxy monomers.
The authors [22-24] previously reported that a two-component photoresist system composed of poly{phydroxystyrene-co-p-[2-(vinyloxy)ethoxy]styrene} (PVES) and a PAG, and a three-component photoresist system composed of a polymer bearing carboxyl groups (or a phenolic polymer), a vinyl ether monomer, and a PAG, exhibit positive working behavior with high resolution.
Vinyl ether groups are incorporated into the PAG, and the resulting compounds act as thermal crosslinking agents as well as PAGs.
The vinyl ether sidechain displays [alpha] and [beta] transitions from -100 to 20[degrees]C, which were used to determine the comonomer content or equivalent weight of the polymer.
Nafion(r) (DuPont) is a copolymer of tetrafluoroethylene (TFE) and a sulfonate vinyl ether, the polymeric structure of which is