Alkyd resin is the result of the esterification reaction of a polyol and a polyacid and a monovalent fatty acid. In fact, alkyd resin is a polyester with a monovalent fatty acid in their structure. Alkyd resins dividing into three types of long oil, medium oil and short oil depending on the oil length and are used in various industries including construction paints, decorative paints, corrosion-resistant primers, varnishes and inks, furnace paints, automotive paints, etc.
Amino resins are etherified by Isobutyl alcohol and n-Butanol. They are used in manufacture of stoving paints along with non-air drying alkyd resins and some of epoxy resins, Nitro-cellulose resins, thermoset acrylics, saturated polyesters and acid drying coatings. In combination with air drying short oil alkyd resins, amino resins can also be used in wood industry.
Bakelite Powder Resins
Bakelite molding powder is produced from the combination of phenolic resins (Novolak) and additives such as soot, graphite and other fillers, and are used as electrical insulation in the electrical industry (production of lamp holders, electrical control parts, etc.) as well as Gas meter parts and home appliances.
Acrylic resins are the product of condensation polymerization of acrylic, methacrylic acids and their derivatives. The use of water based resins is one of the appropriate methods to reduce the amount of organic solvents consumed and as a result toxic volatile. Water based acrylic resins are used in paint, concrete, adhesion, textile industries, etc.
Fatty Acid Resins
Fatty Acid is a carboxylic acid with a long linear aliphatic chain. Natural fatty acid is a pale yellow substance that is obtained during the hydrolysis of fats and oils of vegetable seeds and glycerol separation. The application of this product is in the paint and resin industry, cosmetics, textile and fiber manufacturing.
Saturated polyester Resin
Saturated polyester resin is prepared from esterification reaction of poly acid with poly alcohol and is divided into two groups of liquid saturated polyester (solvent base) and solid saturated polyester. Solvent-based polyester resins are applied in coatings used on metal sheets, can coating, coil coating and automobile paints. They are also used in anti-corrosion coatings on iron- steel structures that have epoxy-based primers.
Solid Epoxy Resin
Epoxy resins are commonly the product of reaction between epichlorohydrin and bis-Phenol A. By increase in molecular weight and viscosity, they change from a low viscose liquid to a high viscose liquid and finally become solid. Solid epoxy resins are commonly manufactured in flake type, and generally used in production of powder coatings. They exhibit good chemical and mechanical resistance.
Unsaturated Polyester Resins
Solvent-based polyester resins have excellent characteristics, with a wide range of applications. They have high resistance to abrasion, impact and cracking. They are mostly applied in coatings used on metal sheets, can coating, coil coating and automobile paints. They are also used in anti-corrosion coatings on iron- steel structures that have epoxy-based primers.
Vinyl Ester Resin
Vinyl ester resin is a thermoset resin and is a product of reaction between Epoxy resin and Ethylene unsaturated carboxylic acids. It shows good mechanical properties of Epoxy resin and good chemical properties of Unsaturated poly ester resin. Epoxy chain in vinyl ester resin improves tensile and flexural strength compared with polyester resin. it also has an excellent resistance to corrosion and hydrolysis. Vinyl ester resin is applied in manufacture of FRP pipes, GRP, storage tanks, floaters. it is also applied in Pultrusion, RTM and hand lay-up industries.