wax

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wax,

substance secreted by glands on the abdomen of the bee and known commonly as beeswax; also various substances resembling beeswax. Waxes are mixtures comprising chiefly esters of monohydroxy alcohols, besides other esters and free fatty acids, free alcohols, and higher hydrocarbons. They differ from fats in that fats contain chiefly esters of glycerol. Waxes are generally harder and less greasy than fats, but like fats they are less dense than water and are soluble in alcohol and ether but not in water. Among the waxes derived from plants are carnauba wax, obtained from the leaves of a palmpalm,
common name for members of the Palmae, a large family of chiefly tropical trees, shrubs, and vines. Most species are treelike, characterized by a crown of compound leaves, called fronds, terminating a tall, woody, unbranched stem.
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 grown in Brazil, and candelilla wax, produced by a Mexican plant (Euphorbia antisyphilitica). Those of animal origin include wool wax, or lanolin, obtained from the surface of wool fibers and used in making certain creams, ointments, and soaps, in the processes of finishing and softening leather, and as an ingredient of some paints and varnishes; spermacetispermaceti
, solid waxy substance, white, odorless, and tasteless, separated from the oils obtained from the sperm whale (see sperm oil) and other marine mammals. A mixture of esters of fatty acids, it is composed chiefly of cetyl palmitate.
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, obtained from the sperm whale, and Chinese wax, which is deposited on certain trees in parts of Asia (especially China and India) by a species of scale insect. Mineral waxes include ozocerite and paraffinparaffin,
white, more-or-less translucent, odorless, tasteless, waxy solid. It melts between 47°C; and 65°C; and is insoluble in water but soluble in ether, benzene, and certain esters. Paraffin is unaffected by most common chemical reagents but burns readily in air.
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, both composed of hydrocarbons. Japan wax and bayberry (or myrtle) wax are composed chiefly of fats.

Bibliography

See L. Roth and J. Weiner, Waxes, Waxing and Wax Modifiers (1961); H. Bennett, Industrial Waxes (2 vol., 1963); P. E. Kolattukudy, ed., Chemistry and Biochemistry of Natural Waxes (1976).

wax

[waks]
(materials)
Any of a group of substances resembling beeswax in appearance and character, and in general distinguished by their composition of esters and higher alcohols, and by their freedom from fatty acids.

wax

A thermoplastic solid material obtained from vegetable, mineral, and animal matter; soluble in organic solvents; used in paste or liquid form as a protective coating or polish on wood and metal surfaces and as an additive in paints.

wax

1. any of various viscous or solid materials of natural origin: characteristically lustrous, insoluble in water, and having a low softening temperature, they consist largely of esters of fatty acids
2. any of various similar substances, such as paraffin wax or ozocerite, that have a mineral origin and consist largely of hydrocarbons
3. short for beeswax, sealing wax
4. Physiol another name for cerumen
5. a resinous preparation used by shoemakers to rub on thread
6. bone wax a mixture of wax, oil, and carbolic acid applied to the cut surface of a bone to prevent bleeding
References in periodicals archive ?
A paralleling mandrel was attached with surveyor for the correct position of patrix placement in wax patterns (Figure 2).
Although some of these methods are rather simplistic, the final outcome of the prosthesis depends on the artistic skill of the maxillofacial prosthetist, especially in sculpting and orienting the wax pattern.
Aim of the study is to highlight changes and dimensional accuracy of wax patterns (Fig.
Here, a forest of pink wax patterns reached toward the ceiling, each one an exact duplicate of the turbine blade or vane for which it would one day melt.
Using elastomeric impression material, the impression of the die is taken, the modelling wax poured into the impression and the wax pattern obtained is invested in the dental flask in the conventional manner using dental stone and model plaster.
Porcelain build up was done in a similar fashion to the wax pattern fabrication taking the guide of incisal table with disclusion.
The tissue side of wax pattern was softened and adapted to the patient's working cast and necessary changes were made.
The wax pattern of anterior 3 unit fixed partial denture was prepared first with inlay wax.
It opted to completely automate its wax pattern area to reduce man hours needed and speed up the process.
PROBLEMS--Wisconsin Precision Castings wanted to understand the correlation between the operating parameters of their MPI Wax Pattern Injector and the result of scrap.