Oils, color

Although the black inks are predominantly based on mineral oil, colors are almost entirely formulated with a soya bean oil vehicle. The superior printabHity of colors and economics of blacks guide the selection of product types by the market. Recently developed low mb blacks offer smudge-resistant print. Their share of the market is growing rapidly. The low mb characteristics of these inks are produced through the use of low stmcture carbon black. The addition of resin further enhances the smudge resistance but imposes a premium price. 

Rectified oils have been redistilled to improve a particular property or characteristic, such as flavor or aroma. Eor example, natural oil of peppermint is frequently rectified to remove dimethyl sulfide, which has a powerful and objectionable cooked vegetable note deleterious to the use of the oil in cmme de menthe Hqueurs. Distillation is also used to remove psoralens, which are harmful photosensitizing agents present in natural bergamot oil. Color may be removed, eg, from cassia oil, by vacuum steam distillation. A desirable component, such as 1,8-cineole (eucalyptol) 85% in eucalyptus oil, may be... 

OIL SOLUBLE AZO DYES The oil soluble, water-iasoluble, azo dyes dissolve ia oils, fats, waxes, etc. Generally, yellow, orange, red, and brown oil colors are azo stmctures and greens, blues, and violets are primarily anthraquiaones (see Dyes, anthraquinone). Blacks are usually nigrosiaes and iaduhnes of the aziae type (see Azinedyes). An example is Oil Red [85-83-6] (127) (Cl Solvent Red 24 Cl 26105). Uses iaclude the coloring of hydrocarbons, waxes, oils, candles, etc. 

Fett-entziehung, /. fat extraction, -farbe, /. fat-soluble color, oil color, -farbstoff, m. color for fats (Micros.) fat stain (Bio-chem.) lipochrome, lutein, -fleck, -flecken, m. grease spot. 

Lipid-soluble food grade copper chlorophyll is manufactured similarly by extraction of adequate plant material, followed by replacement of magnesium by copper, and purihcation steps to remove carotenoids, waxes, sterols, oils, and other minor components that are co-extracted. Commercial copper chlorophylls may vary physically, ranging from viscous resins to fluid dilutions in edible oils as well as granulated forms and emulsions standardized with edible vegetable oil. Colors may vary... 

The list of applications also includes other media, such as oil colors for artists, in which P.Y.154 is used for its high lightfastness. 

Moreover, P.Br.25 is used in a variety of specialty media, for instance in oil colors for artists and in water colors. It lends itself to solvent-based wood stains. The products are very lightfast (step 7) and fast to overcoating. 

Various disazo condensation pigments are utilized in decorative printing on laminated plastic sheets. They are also applied in a number of special-purpose media outside the above-mentioned groups, such as oil colors for artists and crayons. 

Poggio, T., Lend, D. and Masini, L. (1995) Journal of the American Oil Color Chemists Association, 78, 289-293. 

An examination of information readily available at the surface, early in the life of the reservoir, usually can lead to an understanding of the type of fluid in the reservoir. The rules of thumb given in Chapter 5 with regard to initial producing gas-oil ratio, stock-tank oil gravity, and stock-tank oil color can be used to determine the type of fluid. 

Another candidate for the first coordination compound is Prussian Blue, potassium iron(III) hexacyanoferrate(II), a complex of empirical formula KCN-Fe(CN)2- Fe(CN)3. It was first obtained accidentally in 1704 by Diesbach, a manufacturer of artist s colors from Berlin. Initially it was described9 as a nontoxic pigment suitable for oil colors, but its method of preparation was kept secret, probably because Diesbach wished to benefit monetarily from his discovery. 

Com endosperm oil [COLORANTS FORFOOD, DRUGS, COSMETICS AND MEDICAL DEVICES] (Vol 6)... 

One of the fluids was pure Mazola corn oil and the other was the same oil colored with oil-based Teal dye and doped with oil-miscible antistatic Stadis 450 to increase the conductivity and permittivity [91]. The latter values were measured with a broadband dielectric spectrometer in a spatially uniform low electric field for frequencies of 0.5-1 kHz. 

Suzuki, S.H. andMalina, M. Journal of American Oil Color Chemists Association, 48, 1164 (1965). 

Traditionally, the restaurants have used oil color or the foam height in the fryer to decide on oil discarded. However, both approaches are subjective and can lead to either premature discarding of the oil or the use beyond its limit for optimum product flavor and taste. 

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