Skin, protective coatings

Storage Store in tightly closed containers in a cool, dry, and well-ventilated area away from sources of ignition do not store above 6 C Uses Emollient, moisturizer, conditioner, carrier oil, and lubricant for cosmetics and toiletries substitute for sperm oil, carnauba wax, and beeswax transmission and high-pressure lubricants antifoam in antibiotic fermentation food ingred. lubricant skin protectant coating material, carrier Regulatory Canada DSL... 

Corrosive defects detection under the airframe skin and protective coatings. 

It is also doubtful whether the surface condition of the bare metal at the time of burial has much significance. Some authorities consider that the casting skin on cast iron is protective, but the evidence on this point is conflicting. On the other hand, it is desirable to remove the millscale from steel when, as is usual, a protective coating is applied. If the millscale was left on, it might cause the coating to spall. 

The risk of bums is normally only experienced when filling a magnet with nitrogen or helium. You need to be protected in case the liquid spills or the transfer line breaks. Protection just means covering up any exposed skin (lab coat, visor and thick gloves are normally sufficient). At all other times, the cryogens are safely in their cans and should stay there unless something catastrophic happens. 

The unsaponifiables of woolwax, known as woolwax alcohols, are in considerable demand by cosmetic and pharmaceutical industries. Woolwax has a great affinity for water, of which it will absorb 25 to 30%. Refined woolwax is kneaded with water to produce a water-white, colorless oiiilmenL, known as hydrous lanolin or lanolin USP. Anhydrous lanolin is widely used in cosmetic creams, since it is readily absorbed by the skin. It is also used m leather dressings and shoe pastes, as a superfatting agent for toilet soap, as a protective coating for metals, etc. United States consumption of wool wax is about 1.5 million lb/year. 

The role of the liquid applied barrier dressing is to provide a biocompatible protective coating over the tissue for the purpose of protecting it from bacteria and environmental contamination. From a physical and dynamic point of view, the barrier coating must include proper stress-strain physical properties for reasons shown in Fig. 2.2. The skin (epidermis and dermis) and subcutaneous soft tissue are not smooth and stretch and retract (stress-strain) as the body moves to lift an arm or leg, for example. The barrier must experience the same stress-strain and flexing phenomena and remain adhered to the tissue, otherwise the barrier would disbond... 

BPs are used not only in specialized cosmetic preparations for skin protection against the carcinogenic effect of UV radiation they are also added to pharmaceuticals and many everyday products such as body lotions, shampoos, bubble baths, and hair sprays. These compounds are used for the packaging of synthetic materials in order to extend the shelf life of stored products that could be affected by the influence of sunlight. Other application areas are tire additives, castings, coatings, pigments, textiles, and other products, to increase their resistance to UV radiation [49,64,73,74]. 

Numerous studies have been carried out on the effects of single chemicals on the liver, of which ethanol and carbon tetrachloride are the most notorious. [4,81 Other hepatotoxic chemicals, however, have also been widely studied, both in the laboratory and environmentally. For example, an outbreak of toxic liver disease was reported in a fabric coating company. Upon investigation, it was found that dimethylformamide, a known hepatotoxin, was used as a coating solvent in poorly ventilated areas without appropriate skin protection, and no other hepatotoxins were identified. 1121... 

Use In pumps handling corrosive liquids, protective coating for titanium skins on supersonic transports, disk brakes, etc. 

Hobson, S.T., Braue, E.H. Jr., and Back, D., Active Topical Skin Protectants Using Polymer Coated Metal... 

Waxes are complex mixtures of nonpolar lipids. They are protective coatings on leaves, stems, and fruits of plants and the skin and fur of animals. Esters composed of long-chain fatty acids and long-chain alcohols are prominent constituents of most waxes. Well-known examples of waxes include camauba wax, produced by the leaves of the Brazilian wax palm, and beeswax. The predominant constituent of camauba wax is the wax ester melissyl cerotate (Figure 11.5). Triacontyl hexadecanoate is one of several important wax esters in beeswax. Waxes also contain hydrocarbons, alcohols, fatty acids, aldehydes, and sterols (steroid alcohols). 

Naturally occurring waxes have a variety of uses. Lanolin, which serves as a protective coating for hair and skin, is used in skin creams and ointments. Car-nauba wax is used in automobile polish. Whale oil was once used as a fuel, in ointments, and in candles. However, synthetic waxes have replaced whale oil to a large extent, because of efforts to ban the hunting of whales. 

Collodions are liquid preparations composed of pyroxylin (soluble gun cotton, collodion cotton) dissolved in a solvent mixture composed of alcohol (94% ethanol) and ether with or without added medicinals. Pyroxylin is obtained by the action of nitric and sulfuric acids on cotton or other ceUulosic material to produce cellulose tetranitrate. Pyroxylin is completely soluble in 25 parts of a mixture of 3 volumes of ether and 1 volume of alcohol. It is extremely flammable and must be stored in a well-closed container away from flame, heat, and light. Collodions are intended for external use as a protective coating to the skin. When medicated, it leaves a thin layer of that medication firmly placed against the skin. 

Waxes form natural coatings on fruits, leaves, furs, feathers and skin. These coatings have protective functions against physical damage as well as water-repellency functions (waterproofing of birds, control of water loss by transpiration in plants). Waxes derived from natural sources are used commercially in polishes, cosmetics, and ointments. Most waxes are mixtures of esters although some are hydrocarbons, alcohols, or ketones. The ester waxes are esters of a monohydric alcohol (an alcohol containing one OH) and a fatty acid. The alcohols and fatty acids are those of 16 to 36 carbons with unbranched structures and an even number of carbons. 

Skin is usually thickest over the dorsal surface of the body and on the lateral surfaces of the limbs. It is thin on the ventral side of the body and medial surfaces of the limbs. In regions with a protective coat of hair, the epidermis is thin in nonhairy skin, such as that of the mucocutaneous junctions, the epidermis is thicker. On the palmar and plantar surfaces, where considerable abrasive action occurs, the stratum corneum is usually the thickest. The epidermis may be smooth in some areas but has ridges or folds in other regions that reflect the contour of the underlying superficial dermal layer (Monteiro-Riviere, 1998). 

Waxes are water-insoluble and not as easily hydrolyzed as fats and oils consequently, they often occur in nature as protective coatings on feathers, fur, skin, leaves, and fruits. Sebum, a secretion of the sebaceous glands of the skin, contains many different waxes. It keeps the skin soft and prevents dehydration. Waxes are used commercially to make cosmetics, candles, ointments, and protective polishes. 

Uses Substantivity agent tor hair and skin care prods. thickener carrier for active substances provides protective coating primary emuisitier tor cosmetics and personai care prods. 

Chem. Descrip. Petrolatum CAS 8009-03-8 EINECS/ELINCS 232-373-2 Uses Emollient in cosmetics (skin creams/lotions, hair dressings, moisturizing lotions, permanent waves, hand cleaners, sun care prods.), pharmaceuticals (medicated ointments, suppositories) release agent, lubricant, sealant, polishing agent, protective coating, defoamer in foods Regulatory FDA 21 CFR 172.880... 

Uses Modifier for PP, PVC, polyethylene, PS, and high-performance engineering resins antioxidant heat stabilizer UV stabilizer vise, depressant emulsifier in cosmetics emollient, skin protectant, film-former in skin care chemical intermediate for oxidation, ethoxylation, sulfation, amination, esterification coemulsifier and direct additive in coatings processing aid, lubricant, dispersant in plastics food-pkg. adhesives Trade Names Unilin 700 Alcohol... 

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