ether

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Related to Aryl ether: vinyl ether, Primary ether

ether

 [e´ther]
1. an organic compound containing an oxygen atom bonded to two carbon atoms.
2. diethyl or ethyl ether: a colorless, transparent, mobile, very volatile, highly flammable liquid with a characteristic odor; it was the first inhalational anesthetic used for surgical anesthesia, but is now rarely used in the United States or Canada because of its flammability.

e·ther

(ē'thĕr),
1. Any organic compound in which two carbon atoms are independently linked to a common oxygen atom, thus containing the group -C-O-C-.
See also: epoxy.
2. Loosely used to refer to diethyl ether or an anesthetic ether, although a large number of ethers have anesthetic properties. For individual ethers, see the specific name.
[G. aithēr, the pure upper air]

ether

(ē′thər)
n.
1. Any of a class of organic compounds in which two hydrocarbon groups are linked by an oxygen atom.
2. A volatile, highly flammable liquid, C4H10O, derived from distilling ethyl alcohol with sulfuric acid, used as a reagent and solvent, and formerly used as an anesthetic. Also called diethyl ether, ethyl ether.
3. The regions of space beyond the earth's atmosphere; the heavens.
4. The element believed in ancient and medieval civilizations to fill all space above the sphere of the moon and to compose the stars and planets.
5. Physics An all-pervading, infinitely elastic, massless medium formerly postulated as the medium of propagation of electromagnetic waves.

e·ther′ic (ĭ-thĕr′ĭk, ĭ-thîr′-) adj.

e·ther

(ē'thĕr)
1. Any organic compound in which two carbon atoms are independently linked to a common oxygen atom, thus containing the group -C-O-C-.
See also: epoxy
2. Loosely used to refer to diethyl ether.
[G. aithēr, the pure upper air]

ether

A volatile and highly inflammable liquid once widely used as a safe and effective drug for the induction and continuance of general anaesthesia. Induction is slow and unpleasant and deep anaesthesia is needed for muscle relaxation. Postoperative nausea is common. Because of these disadvantages and the danger of explosion, ether is now seldom used. The drug is, however, on the WHO official list.

e·ther

(ē'thĕr)
Any organic compound in which two carbon atoms are independently linked to a common oxygen atom, but commonly used to refer to diethyl ether or an anesthetic ether, although a large number of ethers have anesthetic properties.
[G. aithēr, the pure upper air]
References in periodicals archive ?
Recently, we reported the synthesis of novel poly(aryl ether ketone)s containing amide linkages in main chains by the electrophilic Friedel-Crafts acylation copolycondensation, the copolymers obtained with low content of amide linkages had not only much higher [T.sub.g]s than the conventional PEEK and PEKK due to the existence of intermolecular hydrogen bonding, but also moderate [T.sub.m]s, which are suitable for melt processing, but the resistance to organic solvents and the thermal stability decreased with the incorporation of amide linkages [38-42].
Decrease in the peak intensities of C-O stretching vibration of aryl ether near 1250 cm-1 and C=C stretching of aromatic nucleus in the region of 1500-1600 cm-1.
The typical procedure for the synthesis of poly(aryl ether ketone) polymer containing phthalonitrile (m-PAEK-CN-3%) was as following: m-DHDB (4.5365 g, 0.0412 mol), DFBP (8.7280 g, 0.04 mol), anhydrous [K.sub.2]C[O.sub.3] powder (6.8331 g, 0.0494 mol), toluene (20 mL), and NMP (33 mL) were placed into a 100-mL, three-necked, round-bottomed flask equipped with Dean-Stark trap and condenser, mechanical stirrer, and gas inlet and outlet.
The general procedure for the synthesis of poly(aryl ether ketone)s containing both biphenylene moieties and sulfone linkages in the main chain can be illustrated by the preparation of the polymer IV.
A series of sulfonated poly(aryl ether sulfone) copolymers containing phenyl pendant groups with sulfonic acid groups on the backbone were synthesized by nucleophilic polycondensation.
To obtain semicrystalline poly(aryl ether ketone)s with high [T.sub.g]S and moderate [T.sub.m]s is our goal since they would have good melt processabilities, excellent thermal and mechanical properties, and solvent-resistance characteristics.
Synthesis of Poly(aryl ether ketone) Oligomers Containing Phthalonitrile (PAEK-CN)
For example, it is desirable to utilize poly(aryl ether ketone) materials with higher glass transition temperatures in advanced composite applications.
The thermo-oxidative degradation of blends of poly(aryl ether ether ketone), PEEK, with a thermotropic liquid crystalline polymer (TLCP), Vectra[R], was investigated by thermogravimetry in the temperature range from 50 to 700[degrees]C, under dynamic conditions.
A study has been made of the crystallization behavior of poly(aryl ether ether ketone), PEEK, under nonisothermal conditions.

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