Proposal #1 Research Example | Topics and Well Written Essays - 500 words

#1 - Research Proposal Example Natural oils- linseed, tung, and fish were used as binders until the 1960’s (Schuerman George and Bruzan Raymond 327). Currently, alkyd resins, vinyl and acrylic emulsions, epoxy resins and polyurethanes are the primary binders used in paints. Solvent chosen must be one in which the binder is soluble in and dries evenly. Most emulsion paints use water as the solvent while resin-based paints employ the use of mineral turpentine as the solvent. Pigments are finely divided, and insoluble powders dispersed in the paint that not only give paint its opacity and color, but also help to hold the paint together as well as protect the surface underneath from corrosion and weathering. Inorganic and organic substances are used as pigments with the inorganic ones being cheaper but with fewer clear colors. The tiny solid particles of pigments (≠¤ 1 µm in diameter) enables them to refract light (light has wavelengths between 0.4 µm and