Gloss paints

AH-acryHc (100%) latex emulsions are commonly recognized as the most durable paints for exterior use. Exterior grades are usuaHy copolymers of methyl methacrylate with butyl acrylate or 2-ethyIhexyl acrylate (see Acrylic ester polymers). Interior grades are based on methyl methacrylate copolymerized with butyl acrylate or ethyl acrylate. AcryHc latex emulsions are not commonly used in interior flat paints because these paints typicaHy do not require the kind of performance characteristics that acryHcs offer. However, for interior semigloss or gloss paints, aH-acryHc polymers and acryHc copolymers are used almost exclusively due to their exceUent gloss potential, adhesion characteristics, as weU as block and print resistance. 

Whereas semigloss paints can use only one extender, dat paints, especially interior, can use combinations of three or more. Gloss paints typically do not use extenders, which decrease gloss. As a result, gloss paints lack the hardening effect of extenders and must rely on harder binders for adequate durabihty. Other types of extenders used in paints can have functional properties such as corrosion resistance, mildew resistance, and film-hardening effects. Thek functional properties result from thek reactive nature in the paint film. Zinc oxide is an example of a functional extender that contributes to these properties in a paint film. 

Gloss Enamels. In contrast to exterior and flat wall paint, about half of the gloss paint or enamels sold are based on alkyd resins. Professional painters particularly favor the continued use of alkyd gloss paints. The need for reduction of VOC emission levels, especially in California, has led to efforts to increase the soflds content of alkyd paints or overcome the disadvantages of latex gloss paints. 

Phenolic resins are useful surface coating materials. Resols are useful for stoving lacquers for coating chemical plant, textile equipment, razor blades, brassware cuid food cans. Phenolic resins are used with poly(vinyl formal) as a flexible, tough and solvent-resistant wire enamel. Oil-soluble resins based on synthetic phenols form the basis of some gloss paints. 

Air-drying alkyds (similar to the resins in conventional gloss paints) ... 

If painted, covered with hard gloss paint to facilitate cleaning and minimize impregnation of finish wall and ceiling materials with explosives particles. 

With a refractive index close to 1.5, similar to that of paint and plastics media, ultramarine gives a transparent blue in gloss paints and clear plastics. Opacity is obtained by adding a small quantity of a white pigment. Increasing quantities of white give paler shades, and a trace of ultramarine added to a white enhances the whiteness and acceptability. 

It was also shown that stable latexes of high solid content, and small particle size could be practically obtained by this emulsion polymerization technique. Such microlatexes based on acrylic polymers modified by polyesters are an interesting approach to waterborne coatings leading to high gloss paint films (9). 

Hazing. Loss of gloss after drying. It is usually caused by apphcation of a gloss paint on a groimd coat that has not hardened sufficiently or excess driers in the final coat or partial solution of organic pigments in the paint. 

Gloss paints or enamels dry to a highly reflecting surface. 

Percutaneous uptake through the skin is possible -such as when using cosmetics, after-shave, gloss paints... 

Oil solution on glass Oil solution mi gloss-painted wood W uer spray on emulsion-painted wood Wnier spray on tunc wash Water spray on concrete Water spray on building block 1.0 1.5 1.5 2.0 - 5.0 0.5 8.0-10.0 > 10,0 0.25-0.4 0.5 1.3 1.7 2-0-2.5 >2.5... 

Basonyl . [BASF AG] Cationic dyes for prod of inks, carixn paper coatings, for dyeing natural fibers, paints and varnishes, prod of fluorescent pigments and gloss paints. 

ZnSn03 has applications in PVC, thermoplastics, polyester resins and certain resin-based gloss paints. 

Benzyl alcohol [100-51-6] is miscible with organic solvents apart from aliphatic hydrocarbons. It dissolves cellulose esters and ethers, fats, oils, alkyd resins, natural and synthetic resins, and colorants. Polymers—with the exception of lower poly(vinyl ethers) and poly(vinyl acetates)—are not dissolved. Small amounts of benzyl alcohol improve the flow and gloss paints, delay the evaporation of other solvent components, and have a plasticizing effect in physically drying paints. It is used in ballpoint pen inks. Benzyl alcohol reduces the viscosity in two-pack epoxy resin systems. 

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