Paint is a surface coating applied to achieve the following: surface protection; decoration; or special purposes such as Fire-retarding, anti-fouling and fluorescent.
Paint can be applied with brush, roller coat, spray or dip as is or thinned further.
Paint must solidify and adhere to the surface on which it is applied.
HOW IS IT MADE ?Paint is made from combining pigments or powders and a liquid or mediuum. Pigments and powders commonly used are:
WHITE PIGMENTS1. Basic lead carbonate(white lead-exterior paints) 2. Basic lead sulphate(cheaper white lead-exterior paints) 3. Zinc Oxide(protects from UV rays) 4. Leaded Zinc Oxide(combinations of the above) 5. Antimony Oxide(fire retardant paints) 6. Titanium-Calcium(interior paints) 7. Titanium Dioxide(interior and exterior paints)
RED PIGMENTS1. Red Iron Oxide(floor, barn, marine & primers) 2. Lithol Red(exterior trim & toys) 3. Para Red(interior & exterior enamels) 4. Toluidine Red(Store front, Automotive, pumps, bulletin paints)
ORANGE PIGMENTS1. Chrome Orange(interior & exterior paints) 2. Molybdate Orange(interior & exterior paints) 3. Red Lead(Rust inhibiting paints)
YELLOW PIGMENTS1. Yellow Iron Oxide(floor, porch & deck enamels) 2. Chrome Yellow(Furniture, toys, trim paint) 3. Zinc Yellow(Primer-aircraft etc) 4. Zinc Chromate(mix of red lead and Zinc Yellow for metal primers)
BLUE PIGMENTS1. Iron(ferric ferrocyanides)Blues(interior & exterior auto enamels & trim paints) 2. Cobalt Blue(used to tint White pints) 3. Copper blue(Interior & exterior paints)
GREEN PIGMENTS1. Chrome Green(Interior & exterior paints) 2. Chromium Oxide Green(Camouflage paint) 3. Clorinated Copper(Interior & exterior-Alkili resistant) 4. Pigment green B(latex paints)
BROWN PIGMENTS1. Mixtures of Red & blacks(interior & exterior paints)
BLACK PIGMENTS1. Carbon Black(interior & exterior paints) 2. Lamp Black(interior & exterior paints with a grayish tone)
METALLIC PIGMENTS1. Aluminum powder(Metallic paints) 2. Bronze powders("Gold" type paints) 3. Lead flake(rust inhibiting paint) 4. Zinc powder("Galvanizing" paints)
LINSEED OILObtained from the seeds of the flax plant. It is yellow to greenish-brown in color. It is a tri-glyceride or unsaturated fatty acids.
TUNG OILObtained fron the tung tree, grown extensively in Southern China. It is pale amber in color. It is a glyceride of Oleosteratic Acid, Oleoic Acid and Saturated Acid.
CASTOR OILCastor Oil is non-drying so must be converted to Dehydrated state. Obtained from the Castor Bean Plant, raw castor oil is a tri-glyceride. Color is a water white liquid.
FISH OILObtained from pressing the oil from menhaden, sardines and pilchards. Cloudy dark in color with a strong odor. Composition is Saturated Acids, Oleoic, lineolic, linolenic, archidonic and culpanodonic acids. A slow drying liquid.
ROSINObtained from Pine trees. Gum rosin is obtained frommliving tres by cutting a slit and catching the rosin. Wood rosin is obtained from tree stumps.
PHENOLIC RESINObtained by chemical reaction of phenols and aldehydes. Used for chemical resistance to such things as acetone, gasoline, salt water, strong alkili and acids.
ALKYD RESINSObtained as a condensed product of polybasic acid and a polyhydric alcohol The properties of the Alkyd Resins depend upon the modifying oil used, percentage of glyceryl phthalate, ans the typ of polybasic acid used in the mix.
VINYL RESINSObtained as a polymer of vinyl acetate or a polymer of vinyl chloride. As a white powder may be dissolved in strong solvents such as ketones, esters and then plasticized. Have exceptional resistance to water, alkali, acid , alcohol, greases and other corrosive agents.
UREA RESINSObtained by a reaction between urea and formaldehyde. Must be baked on to provide a hard durable finish.
MELAMINE RESINSObtained from a reaction between melamine and formaldehyde. Also must be baked on to provide the hard gloss finish. I'm working on this as fast as I can...hosam...more later...
© S.A. McCall