Wax sweating

Waxes hydrocarbon Wax printing Wax sizing materials Wax sweating Waxy corn WB4101 [613-67-2] W341C [110368-36-0] Weak interfaces Weapons Wear factors Wear resistance Weather balloons Weathering... 

Wax recrystallization, such as wax sweating, separates wax into fractions, but instead of relying on differences in melting points, the process makes use of the different solubility of the wax fractions in a solvent such as a ketone. 

In a study of wax recovery, L. D. Wyant outlined the basic fundar mentals of wax sweating but could riot completely explain the range of 23 to 85 per cent efficiency of recovery that was being obtained by Mid Continent refiners. J. P. O Donnell describes in detail the construction and operation of modem sweaters. Donnell and Burch find that slack waxes containing more than 50 per cent oil yield little crude scale whereas at 20 per cent oil the yield of scale is 52 per cent. 

Airborne dusts settle onto food, water, clothing, and other objects, and may subsequently be transferred to the mouth. A more recent study suggests that lead, applied to the skin as lead acetate or lead nitrate, was rapidly absorbed through the skin and was detected in sweat, blood, and urine within 6 hours of application (Stauber et al. 1994). In this study, 4.4. mg of lead was applied to the skin under a covered wax/plastic patch on the forearms of human subjects of the applied dose, 1.3 mg of lead was not recovered from skin washings. The amount that actually remained in (or on) the skin and the mass balance of the fate of this lead was not determined it may have been dermally absorbed or eliminated from the skin by exfoliation of epidermal cells. Thus, while this study provides evidence for dermal absorption of lead, it did not quantify the fraction of applied dose that was absorbed. The quantitative significance of the dermal absorption pathway as a contributor to lead body burden remains uncertain. 

It is reported (40) that the liquid-liquid process for separation of wax and oil is particularly suited for deoiling of waxes and that in some instances it is replacing the sweating process in Europe for the production of commercial waxes. 

Although the bulk of low oil content waxes, especially those having melting points below about 135° F., are produced today by sweating, solvent deoiling is fast becoming the more important method for the production of all waxes derived from petroleum. 

The wax cake obtained from paraffin-distillate solvent dewaxing sweats more readily than that obtained from pressing, because the former has less oil. The amorphous wax recovered from the more viscous oils will not sweat, and therefore solvent processes for deoiling ljiave to be installed. These usually involve a repulping or resolution of the wax in... 

Wax does not separate from the HBX ( sweat ) when the material is cast... 

Melting. Pronounced maxima in the C27-C33 range may result in part from the loss of smaller n-alkanes by a fractional melting process analogous to sweating in wax manufacture. Positions of the maxima would be affected by overlap with evaporation (4.). 

Crude scale wax the wax product from the first sweating of the slack wax. 

Foots oil the oil sweated out of slack wax named from the fact that the oil goes to the foot, or bottom, of the pan during the sweating operation. 

Scale wax the paraffin derived by removing the greater part of the oil from slack wax by sweating or solvent de-oiling. 

Sweated wax cnide wax freed from oil by having been passed through a sweater. 

Sweating the separation of paraffin oil and low-melting wax from paraffin wax. 

Earwax is a normal secretion. The main component, cerumen, is a protective wax-like substance with antifungal and antibacterial properties that traps particles and so helps keep the ears clean. Earwax is formed when cerumen secreted by the sebaceous and apocrine glands in the external auditory canal combines with sebum, exfoliated skin cells, sweat, hair and retained dust. 

This method of producing wax fractions is much faster and more convenient than sweating and results in a much more complete separation of the various fractions. Furthermore, recrystallization can also be applied to the microcrystalline waxes obtained from intermediate and heavy paraffin distillates, which cannot be sweated. Indeed, the microcrystalline waxes have higher melting points and differ in their properties from the paraffin waxes obtained from light paraffin distillates, and thus, wax recrystallization has made new kinds of waxes available. 

A simple deodorant consists of an antibacterial agent in a cream base. Antiperspirant ingredients ( aluminum salts ) such as aluminum chlorohydrate, activated aluminum chlorohydrates, and aluminum-zirconium-glycine (AZG) complexes work by forming superficial plugs in the sweat ducts, reducing the flow of perspiration. Antiperspirants are available in four product types cream, liquid, powder, or stick. They usually include aluminum salts, titanium dioxide, oxyquinoline sulfate, zirconium salt, alcohol, and antibacterial agents. Some liquid forms are propellant dispensed (aerosols). Waxes, soap, and humectants may be present in minor proportion in stick forms. Roll-on types may be added with... 

---