Gold lacquers

Epoxy-phenoUc High molecular weight epoxy resins cross-linked with phenolic resole resins Good Very good Most widely used system Universal gold lacquer for three piece cans Shallow drawn cans... 

Phenolic Resins. Phenolic resins react with high molecular mass epoxy resins on heating. Such systems are used as gold lacquers to line food containers. The similarly synthesized bisphenol A resols produce colorless coatings with a higher chemical resistance, less odor during cure, and less alteration of the taste of food in contact with the coating. Flexibility is, however, lower than with standard phenolic resins. 

The main disadvantage of phenolic resins is their intrinsic yellow to brown color. As a result they cannot be used for colored and white paints. They can only be used for decorative coatings in a few cases (e.g., gold lacquers). Phenolic resins have favourable mechanical properties and a high chemical resistance. Paint systems that are optimally adjusted to the requirement profile can be developed by suitable formulations. 

Chem. Descrip. Phenolic resin (63%) in xylene/methoxypropanol Uses Coloring resin for gold lacquers Features Unplasticized... 

Gold lacquer n. Vehicle of such color that it... 

Gold Lacquer n Vehicle of such color that it will give the effect of gold when applied over aluminum leaf... 

F. Wibel described a wooden casket in die Museum of Useful Arts at Hamburg, made in 1557. Over a chalk background attached with wax or glue, it has a metallic surface about one millimeter thick, overlaid witii gold or amber lacquer. Investigation of this surface proved it to be bismuth. In the latter part of the eighteenth century, bismutii painting was superseded by a cheaper process in which perfected lacquers were applied directly to the wood (47). 

Paint is the proper shipping name for paint, lacquer, enamel, stain, shellac, varnish, liquid aluminium, liquid bronze, liquid gold, liquid wood flller, and liquid lacquer base. US 173.173(a)... 

After the deposition is completed, the parts are removed and dipped or sprayed with a top-coat lacquer to protect the metal from abrasion. Color tones, such as gold, copper, and brass may be added to this coating if desired. 

The first painted objects come from China. Furniture and utensils were covered with a layer of paint in an artistic design. The oldest tradition work dates from around 200 B.C. The lacquer used was the milky juice from the bark of the lacquer tree Rhus vernicifera). This was colored black or red with minerals, and later also with gold dust or gold leaf. 

Skin contact with homogeneous nickel, other than with some coins, is not common, but many items that are electroplated with nickel come into contact with skin. Bright nickel plate contains sulfur, which facilitates the release of nickel ions. Nickel plate is often covered with a topcoat of chromium, silver, gold, tin/ nickel, or different lacquers which, although they reduce formation of nickel ions, may not be adequate to prevent contact dermatitis. Topcoats often have pores or cracks and they are subject to wear. Nickel used as an inter-liner under a plating of gold, silver or chromium causes dermatitis (Liden et al. 1996). 

Another surface finishing can be added by finally dipping the candles into a liquid lacquer, which is usually transparent and contains organic solvents, e.g. acetone, propyl-alcohol. Lacquer is only used for the realisation of special effects, e.g. matt, glossy and gold (highly disperse aluminium plus various azo-dyes), representing only 10% of annual candle production. 

Cuts patterns on leather applies adhesive to desk or table top to attach leather. May apply gold leaf or spray lacquer over leather... 

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