Alkyd resins are produced by reacting a dibasic acid with a polyol and drying oil. Modified alkyd resins as the versatile coating materials. Alkyd resins based on soyabean oil and other vegetable oils 103. Prakash alagi, ravindra ghorpade, jeong hyeon jang, chandrashekhar patil, harishchandra jirimali, vikas gite, sung chul hong. Design and synthesis of biobased epoxidized alkyd resin for anticorrosive coating application. Polymerization of alkyds an alkyd is a polyester resin commonly derived from fatty acids, polyhydric alcohol, and dibasic acids, which has. The ratio between the alkyd resin and acrylate monomers was varied and the effect on copolymerization. Synthesis and characterization of hyperbranched alkyd resins.
The name alkyd, formed from alkyl a chemical abbreviation for alcohol and acid, denotes the chemical origin of the resin, which is commonly based on a polymerization reaction between an alcohol, such as glycerol, and a dicarboxylic acid or its anhydridefor instance, phthalic anhydride. A n analysis of the properties of the various oils is given in table iv. Enhancing the quality of alkyd resins using methyl esters of. Pdf synthesis and characterization of alkyd resin from delonix. All resins showed excellent flexibility, formability, adhesion, and gloss. A lot of alkyd resins were imported to myanmar paint industries every year. Alkyd resins were first synthesized by kienle in the mid1920s. It is a medium oil alkyd resin and it was produced by using soybean oil, glycerol, phthalic anhydride and benzoic acid.
Synthesis, characterization and performance evaluation of. The number of double allylic groups in the unsaturated fatty chain has a big in. Preparation and characterization of alkyd resins of jordan valley. This site is like a library, use search box in the widget to get ebook that you want. The resin synthesized had high drying time in the presence of a drying agent, and exhibited excellent adhesion. Synthesis and characterization of alkyd resin based on soybean oil and glycerin using zirconium octoate as a catalyst. A typical oilmodified alkyd resin synthesis using linseed oil is given in preparation 22.
Alkyd resins technology handbook download ebook pdf, epub. Alkyd resin, which is used in the production of a wide variety of paints, is supplied to the indian market both from domestic production and import. Uzoh f chigozie, chemical engineering department, faculty of engineering nnamdi azikiwe university, awka, nigeria, tel. Synthesis of resin having average molecular weight of about 370 and 1,2 epoxy. Synthesis of alkyd resins alkyd resins were synthesised in a threenecked roundbottom flask equipped with a deanstark apparatus for water removal, a reflux condenser, a magnetic stirring bar, a heating mantle and a temperature controller. Gift sample of commercial alkyd resin car was used as reference sample, obtained from perstorp india pvt. Click download or read online button to get alkyd resins technology handbook book now. The polymerization was performed in a miniemulsion, because of the stability and copolymer formation issues. Fourier transform infrared ftir spectroscopy was used to investigate. Pdf preparation and characterization of alkyd resins based on. The oil length of an alkyd resin is defined as the number of grams of oil used to produce 100 grams of resin. Cn105820320a alkyd resin for woodware primer and synthesis.
Blends of epoxidized alkyd resins based on jatropha oil and. Synthesis and characterisation of alkyd resins with. As the oil length of the resin increases, generally the viscosity decreases, the hardness of the film decreases, film flexibility increases and water. Thus many researches have been successfully conducted on synthesis of watersoluble alkyd resin. The modified alkyd resin can be dispersed in water up to 30 wt%. Melamine was preferred as core molecule due to its excellent. The alkyd portion of the resin was cooked for 108 minutes at 200c. Fullscale production began in 1933 at general electric, and its use as an inexpensive and effective paint binder caused alkyd use to grow immensely. Numerous aliphatic and aromatic polyacids or their anhydrides are used in alkyd resin preparations, like succinic anhydride, maleic anhydride, glutaric anhydride, phthalic anhydride etc. Synthesis and characterisation of alkyd resins with glutamic. Saturated fatty acid yields nondyeing or plasticizing resin while drying properties are conferred by unsaturated acids. Synthesis of water dispersible alkyd resins were carried out in two ways. A water reducible alkyd acrylic resin resulted from a copolymer of 15 to 40% nbutylacrylate and maleic anhydride polymergrafted on modified palm kernel oil saravari, et al,2005.
Study of the physico chemical properties of alkyd resin. Alkyd resins are valuable due to their ability to have many functions and properties for a broad range of applications. Alkyd resin coatings have good wetting, mechanical properties and durability. Polymerization of alkyds definition an alkyd is a polyester resin commonly derived from fatty acids, polyhydric alcohol, and dibasic acids, which has many applications in the coatings industry due to its low cost, broad functionality, and production from renewable seed oils. Three alkyd resins of medium oil length were prepared using phthalic anhydride, maleic anhydride, and glycerol. Synthesis and characterization of novel silicone acrylate. Pdf in this study, different samples of alkyd resins based on citrullus colocynthis seed oil ccsowhich has a high content of linoleic.
Alkyd resin was synthesized from the flamboyant delonix regia seed oil fbo and the physicochemical properties of both the oil and the consequent alkyd resin were studied. Dec 29, 2014 functionalization of an alkyd resin with methacrylate groups for photoinitiated polymerization. As indian industries are producing paint of amount approximately rs. Silicon modified alkyd resins to p r o m o t e rapid curing of.
Many industrial baking enamels, such as those for appliances, coil coatings, and automotive finishes, are based on alkyd amino resin blends. It intends to maximize percentage yield of alkyd resin oil based p. The synthesis of an alkyd resin through an enzymatic alcoholysis provided by novozym 435 was analyzed in this study. Originally called an alcid for an alcohol and acid, alkyd resins are generally synthesized from an alcohol, dicarboxylic acid, and a fatty acid see figure 1. They may be used in the form of oil or free fatty acid. Increased demand of paint will need the basic raw material of paint i. The overwhelming majority of monobasic acids used in alkyd resins are long. Our alkyd resins results showed that the extracted tomato seed oil can be qualified to be used in the synthesize of alkyd resin. Chemical engineering department, faculty of engineering nnamdi azikiwe university, awka, nigeria corresponding author.
New alkyd resins were synthesized by reacting sunflower oil or linoleic acid with poly ethylene glycol or triethanol amine and phthalic anhydride. Alkyd amino resin blends are probably the most important group of alkyd resins. One of the factors affecting coating properties is the type of fatty acid or oil used in the alkyd production 10. In the alcoholysis reaction, measured amounts of the triglycerides were. Pdf synthesis and characterization of alkyd resin based on. Due to construction of apartments, buildings, roads there is huge demand of paint in this sector. The resulting resins are compared to a conventional alkyd resin that exclusively contains nonrenewable diacids.
Careful selection of the type of polyacids or anhydrides and polyalcohols may help in hampering the gelation of alkyd resin of choice and offers easy control of the process of polymerization for the alkyd resins. In this study, a new alkyd based resin was formulated using long oil alkyd and melamine based hyperbranched polymer having 24 functional groups on its structure. The fiber is more thermooxidatively stable than the phenolic resin which in turn is more stable than cdrrently used epoxy res i ns. Utilization of sunflower acid oil for synthesis of alkyd resin. The procedure is illustrated here for the synthesis of resin h. The oils that are mostly employed for alkyd resin synthesis are. Synthesis and physicochemical properties of airdrying alkyd resin based on palm oil were reported by uzoh et al 11. Optimization of polycondensation process of alkyd resin. Pdf synthesis and characterization of alkyd resin based. Kinetics of castor oil alkyd resin polycondensation reaction. Similarly, melon seed oil was found to be a substitute for linseed oil, and soyabean oil in the synthesis. Alkyd resin synthesis by enzymatic alcoholysis springerlink. A soya alkyd resin with 60% oil length was prepared by alcoholic process using 1200 g of soya oil, 280 g of pentaerythritol 2. Polymerization of alkyds an alkyd is a polyester resin commonly derived from fatty acids, polyhydric alcohol, and dibasic acids, which has many applications in.
In alkyd paint, the binder is a synthetic resin, which is called an alkyd resin. M o r e recent examples of alkyd resin preparation are shown in table vi. Paint, hyperbranched polymer, melamine, alkyd, air drying. In order to save foreign currency outflow, it is needed to produce alkyd resin in myanmar.
Alkyd resin is defined as the reaction alkyd resin was synthesized from the flamboyant delonix regia seed oil fbo and the physicochemical properties of. At this point, the acid number of the resin was 10 and the rate of removal of water was zero. Soya oil and pentaerythritol are taken in a four necked flask fitted with reflux condenser. The oils that are mostly employed for alkyd resin synthesis are linseed oil, soybean oil, dehydrated castor oil, fish oil and tall oil. Physicochemical properties of the oil and the alkyd were then investigated using standard methods. The synthesis of oxypolymerizable alkyd from nondrying palm kernel oil was studied. Chlorinated rubber is often used in combination with medium oil dryingtype alkyds. Synthesis of the neem alkyd resin synthesis of neem alkyd resin was carried out after decolorizing the oil in two step processes. It is probable that the alkyd resin mass consisted essentially of alkyd esters and unreacted glycerol hydroxyl groups. Thus, maximum thermooxidative resin char yield is a useful goal for. Pdf synthesis and characterization of alkyd resin from. A one pot synthesis of alkyd resins based on the soya bean oil and glycerin with the zirconium octoate zirconium 2ethyl hexanoate as a new. Synthesis, characterization and antimicrobial evaluation of.