Resin spray coating

Resin molding with resin spray coating... 

Low viscosity cellulose propionate butyrate esters containing 3—5% butyryl, 40—50% propionyl, and 2—3% hydroxyl groups have excellent compatibihty with oil-modified alkyd resins (qv) and are used in wood furniture coatings (155). Acetate butyrate esters have been used in such varied apphcations as hot-melt adhesive formulations (156), electrostatically spray-coated powders for fusible, non-cratering coatings on metal surfaces (157—159), contact lenses (qv) with improved oxygen permeabiUty and excellent wear characteristics (160—162), and as reverse-osmosis membranes for desalination of water (163). 

A characteristic of the group (a) of resins is that they air-dry solely by solvent evaporation and remain permanently solvent soluble. This fact, combined with the need to use strong solvents, makes brush application very difficult, but sprayed coats can be applied at intervals of one hour. A full vinyl system such as (o) possesses excellent chemical and water resistance. Many members of group (o) have very poor adhesion to metal, and have therefore been exploited as strip lacquers for temporary protection. Excellent adhesion is, however, obtained by initial application of an etching primer the best known of such primers comprises polyvinyl butyral, zinc tetroxy-chromate and phosphoric acid. 

Protective coatings and lacquers may be applied as a roller or spray coating, usually based on vinyl, epoxy, polyester, phenol-alkyd resin, or wax coatings. 

Spray cleaning, of metal surfaces, 16 213 Spray coating processes, 7 23, 68-76 economic aspects, 7 75-76 Spray column absorbers, 1 27 Spray cone angle, 23 187 Spray correlations, 23 189-192 Spray deposition, of metal-matrix composites, 16 173 Spray-dried products, 11 542-543 Spray-dried resins, production of,... 

Figure 7. Paint adhesion loss in salt spray exposure (ASTM B117) as a function of ester content for chain-extended epoxy-amine and epoxy-ester resin based coatings. All coatings applied at 20-25 urn film thickness to SAE 1010 steel test panels, baked, scribed and exposed for 24 hours to salt spray conditions.

Uses. Hardener/cross-linker for epoxy resins metal chelator constituent of wet-strength paper resins copolymer with fatty acids in metal spray coatings constituent of synthetic elastomer formulations... 

Extendospheres. [PQ G>rp.] Hollow microspheres extenders for resin matrices, coatings, plastic parts, concrete, spray-up applies., foundry and refracts materials, adhesives, explosives, thomosets. 

OTHER COMMENTS used as a solvent for nitrocellulose resins, spray lacquers, quickdrying lacquers, varnishes, enamels, varnish removers, and dry-cleaning compounds mutual solvent for soluble mineral oils to hold soap in solution, and to improve emulsification use to make acetate esters as well as phthalate and stearate plasticizers preferred coupling agent for many water-based coatings. 

Short oil alkyd resins can also be combined with nitrocellulose. They are readily soluble in typical nitrocellulose solvents (esters and ketones). Special short oil alkyd resins that are soluble in lower alcohols are often processed into furniture lacquers and acid-curing paints, and are also used in paper (spray) coatings and in flexoprint-... 

Thermosetting UP and VE resins reinforced by glass flakes, which have a thickness of only a few microns and lie parallel to the surface of the substrate, are applied as grouts and sprayed coats, especially to protect gas ducts in flue gas desulfurization units, even in cases where condensates form. Other applications of these easily applied coatings, which are also relatively diffusion-proof when sinalized flakes are used, include the covers of large rubber-lined, brick-lined, or laminate-coated tanks. 

Uses Foam control agent for water-thinned paints, coatings air release agent for polyester-resin spray and gel-coating operations deaerator in gluing operations food pkg. adhesives, coatings defoamer in food-contact paper coatings... 

Uses Adhesion promoter for solv., water-based, solventless, and powd. systems incl. epoxy coatings, alkyd finishes curing agent tor silicone resin-based coatings pigment treatment food pkg. adhesives Features Improves adhesion and salt-spray resist, of epoxy coatings ... 

Chem. Descrip. Linear low m.w. sat. polyester resin in aromatic soivs. Uses Polyester for coil coatings, top coats, spray coatings and one-coat systems for exterior applies. 

Uses Defoamer for solv.-based coatings, fast drying industrial and decorative finishes based on alkyd resins, air-drying acrylic, vinyl, and chlorinated polymers, airless spray coatings Properties Colorless clear Iiq. dens. 0.94-0.96 g/cm (20 c) flash pt. 42 C ref. index 1.445-1.455 Use Level 0.1-1.0% (on total formulation)... 

Chem. Descrip. Bismuth oxychloride in nitrocellulose vehicle Uses Pearlescent pigment for dip and spray coatings, inks, and resin systems... 

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