Oleic acid

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Oleic acid (OA, cis-9 C18:1) is a monounsaturated fatty acid (MUFA). It is abundant in most of the fatty acids by (48%) or in olive oil by (70%-80%). It can be extracted from peanut and its products. Researches indicate that the MUFA-rich diet has protective effects on cardiovascular risk and diabetes 24-27.
Alkyd resins are highly branched polymer with a polyester backbone which significant for synthetic polymers 28, 29. They are thermoplastic polyester resins can be synthesized by polycondensation 30, 31 of three types of monomers of polyhydric alcohols (e.g; glycerol), fatty acids (e.g; oleic acid) and dibasic acids or their anhydrides (e.g; phthalic anhydride) 32-37. They can be dissolved in organic solvents and have good interactions with polar substrates such as wood and steel 38. They have excellent properties such as acceptable, inexpensive to produce, high gloss, retention color, dissolved in organic solvents, excellent thermal stability, eco-friendly, excellent wetting properties, good adhesion and good interactions with polar substrates such as wood and steel 26, 34, 35. These properties make them suitable to apply in industrial coating, adhesives, the binder for composites and anticorrosion paint 39. Bio-alkyd resin contains reactive sites such as carbon-carbon double bond, a polar ester group, methylene group attached to the carbonyl site, allylic methylene attached to double bond 40.

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