acetal


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Related to acetal: hemiacetal

acetal

 [as´ĕ-t'l]
1. any of a class of organic compounds formed by combination of an aldehyde molecule with two alcohol molecules.
2. CH3CH(OC2H5)2, a colorless volatile liquid used as a solvent and in cosmetics.

ac·e·tal

(as'e-tal),
Product of the addition of 2 mol of alcohol to 1 mol of an aldehyde; in mixed acetals (for example, glycosides), two different alcohols are bound to the original aldehyde group.
See also: hemiacetal, hemiketal, ketal.

ac·e·tal

(as'ĕ-tăl)
Product of the addition of 2 mol alcohol to 1 mol of an aldehyde.
See also: hemiacetal, hemiketal, ketal
References in periodicals archive ?
Ultimately, HYTAC-C1R resulted in equivalent or improved optical properties compared to PEI and acetal, while improving material distribution and leading to stronger cups.
In the case of acetal copolymer, the challenge is to develop a low-gloss material with no sacrifice in overall appearance (no surface defects), one that is colorable in a full range of colors, meets UV requirements, and maintains a good balance of mechanical properties, all at a reasonable raw material cost.
The ACETAL valves perform at temperatures of -20[degrees]F to 180[degrees]F.
In one case, a watch manufacturer switched from metal to gears made of Celcon acetal copolymer and Vectra liquid crystal polymer.
Consequently, in a simultaneous reaction scheme [TABULAR DATA FOR TABLE 2 OMITTED] where the poly(vinyl acetal) is produced directly from PVAc, even in the presence of C[O.sub.2], the rate of acetalization should be significantly higher than that of the initial hydrolysis/alcoholysis to ensure that the concentration of OH groups remains low.
Plastic (acetal) Newlocs offer light weight and are available in inch and metric sizes.
The valves below were made from aluminium and phosphor bronze/nylon and are now made from acetal.
In his 40-plus years of experience with rotational molding, Beall has encouraged attempts to rotomold nylon, acetal, polycarbonate (PC), and other engineering resins.
Aardalloy 3300 POM Alloy is a medium-viscosity, high-heat, homopolymer acetal alloyed with elastomers and modifiers that increase impact strength and elongation.
The Techtron PPS (polyphenylene sulfide), Ketron PEEK (polyetheretherketone) and a porosity-free acetal copolymer provide high stiffness and dimensional stability to various structural components of the Varioscope M5 system.
Keywords: By reacting an alkoxysilane acetal with a sulfurating agent including certain novel mercapto silanes, useful in providing rubber tires with improved properties.