Tanning in the Shade

Brown combinations usually contain iron with chromium, zinc, titanium, or aluminum. There are a few without iron that contain chromium, antimony, tin, zinc, manganese, or aluminum. They range from tight tans to dark chocolate. The shades ate not as red as ferric oxide, but the browns are far superior to hydrated iron oxide in brightness and thermal stability. 

Analysts have advised him that the delivery systems can take out almost every occupant in the entire target area. The smoke generators are the latest in design. They worked extremely well in all the tests, providing a smooth release and a uniform distribution. The colonel puts his hand on the acetate-covered map, dragging tanned fingers across a crayon-shaded area where most of the terrorists are concentrated. 

When sufficient heat is developed by the exothermic polymerization reaction, the TCFM begins to vaporize and the colour of the reacting mix changes to a milky tan shade. This very obvious change in the appearance of the mix is called cream time . 

Uses Dispersant, tanning agent for leather secondary dispersant in rubber production treating agent within paper mills for recovering tall oil Features Highly efficient and economical low iron and salt content does not alter the shade of colorants... 

Chrome-tanned leather has chromium bonded to the leather fibers. This chromium can act as a mordant for acid dyes resulting in fast colors and intense shading at the surface of the leather. 

Naphtholactam is a particularly important condensation component for preparing apocyanine dyes. At first only dyes unsubstituted at the lactam nitrogen atom were prepared and recommended for dyeing tanned cotton and wool [46], However, it was later found that the /V-alkyl derivatives dye polyacrylonitrile in very lightfast violet and blue shades (e.g., 20). 

Commercial solvent dyes for leather are employed in a great variety of solvents. It is common practice to use mixed solvents to obtain the requisite physical properties. They are also applied to correct off-shade dyeings and improve the brilliance of shades. Alcohols or glycols are the most common solvents but esters and ketones are also convenient. The colors are normally applied to dyed or undyed tanned leather by spraying from solvent solution or aqueous/organic emulsions. Nowadays, water-based finish recipes, which are combinations of sol-... 

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