Polyesteramide resins from dehydrated castor oil and various dibasic acids

Shende, Pradeep G.; Jadhav, Abhijit B.; Dabhade, Shrikant B.

doi:10.1108/03699420210442347

Cited by 14 publications

(6 citation statements)

References 8 publications

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“…Dehydrated castor oil is well known for its non-yellowing and outstanding color retention characteristics; it has better drying properties than linseed oil and its water and alkali resistance can be almost as good as for tung oil [54]. Varnishes, alkyds and resin systems based on dehydrated castor oil offer properties like fast drying, flexibility, excellent chemical resistance, adhesion to metals, high gloss and water resistance [55][56][57][58][59]. Figure 7 summarizes the products that can be formed during the hydrogenation of ricinoleic acid methyl ester [60].…”

Section: Major Applications and Industrial Products 21 Dehydration Omentioning

confidence: 99%

Castor oil as a renewable resource for the chemical industry

Mutlu

Meier

2010

Euro J Lipid Sci & Tech

642

492

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Castor oil is, as many other plant oils, a very valuable renewable resource for the chemical industry. This review article provides an overview on this specialty oil, covering its production and properties. More importantly, the preparation, properties and major application possibilities of chemical derivatives of castor oil are highlighted. Our discussion focuses on application possibilities of castor oil and its derivatives for the synthesis of renewable monomers and polymers. An overview of recent developments in this field is provided and selected examples are discussed in detail, including the preparation and characterization of castor oil-derived polyurethanes, polyesters and polyamides.

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Section: Major Applications and Industrial Products 21 Dehydration Omentioning

confidence: 99%

Castor oil as a renewable resource for the chemical industry

Mutlu

Meier

2010

Euro J Lipid Sci & Tech

642

492

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“…As an important chemical raw material (Vasishtha et al, ), due to its low toxicity and high temperature resistance, sebacic acid remained the highest castor oil derivatives consumption in 2015 and held more than 20% of the global market revenue (Grand view research, ). It can be used for the manufacture of high temperature lubricating oil such as isopropyl sebacate, high quality engineering plastics such as nylon‐610 and nylon‐810, artificial perfume such as diethyl sebacate, as well as resins, fibres and cosmetics (Ito et al, ; Raouf, ; Shende et al, ; Tang et al, ; Xia et al, ).…”

Section: Introductionmentioning

confidence: 99%

Preparation of Sebacic Acid via Alkali Fusion of Castor Oil and its Several Derivatives

Cui

Wang

et al. 2020

J Americ Oil Chem Soc

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Castor oil and its three derivatives including methyl ricinoleate, sodium ricinoleate and ricinoleic acid were used as the raw material for alkali fusion to prepare sebacic acid. The reaction parameters including catalyst, ratio of oleochemicals/NaOH, reaction time and reaction temperature were optimized. It was found that Pb3O4 (1%) showed the best catalytic performance, and 553 K was considered as the most suitable reaction temperature. The oleochemicals/NaOH ratios of 15:14, 15:14, 15:12 and 15:14 were determined as the optimal ratio for alkali fusion of castor oil, methyl ricinoleate, sodium ricinoleate and ricinoleic acid, respectively. In addition, the optimal reaction time of alkali fusion of castor oil was 5 hours, and that of its derivatives was 3 hours. The maximum yield in sebacic acid of 68.8%, 77.7%, 80.1%, 78.6% can be obtained by using castor oil, methyl ricinoleate, sodium ricinoleate and ricinoleic acid as the raw material, respectively. High purity of sebacic acid was confirmed by GC and melting point analysis. ICP‐OES results illustrated that the content of Pb in sebcic acid was less than 1 mg kg−1. Separating glycerol from castor oil was beneficial for alkali fusion, by which, the yield of sebacic acid was increased of approximately 10%, and the reaction time was reduced from 5 to 3 hours. This study provided guiding significance for the future industrial production of sebacic acid.

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“…The presence of repeating units of ester (−COOR) and amide (−NCOR) in the polymeric chain of polyesteramide improves the ease of application, thermal stability, chemical and water resistance, and also contributes to faster drying and enhanced hardness compared to normal alkyds (Gast et al , 1966, 1968, 1969; Economy, 1984). Several polyesteramides have been synthesised from conventional and non‐conventional seed oils to improve their drying ability and mechanical and corrosion protective efficiency (Mahopatra and Karak, 2004; Shende et al , 2002, 2003; Mistry and Agarwal, 2009). The modification results in the formation of N,N‐bis(2‐hydroxyethyl) fatty acid amide (HEFA) monomer, which plays a vital role in the synthesis of organic polymers and in addition also finds application as a polymer cross‐linker.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of new modified anti‐corrosive polyesteramide resins by partial replacement of the ingredient source of the polybasic acid for organic surface coatings

El‐Wahab

El‐Hai

Naser

et al. 2012

Pigment &Amp; Resin Technology

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PurposePolymeric systems based on polyesteramides (PEA) are high performance materials, which combine the useful properties of polyester and polyamide resins, and find many applications, most importantly as protective surface coatings. The purpose of this paper is to characterise and evaluate new modified anti‐corrosive PEA resins for use in protective coating formulations.Design/methodology/approachIn the study report here, new modified PEA compositions were prepared and evaluated as vehicles for surface coating. The PEA resins were obtained by means of a condensation polymerisation reaction between phthalic anhydride (PA) and N,N‐bis‐(2‐hydroxyethyl) linseed oil fatty acid amide (HELA) as the ingredient source of the polyol used. The phthalic anhydride was partially replaced with N‐phthaloylglutamic acid NPGA as the ingredient source of the dibasic acid. The structure of the resin was confirmed by FT‐IR spectral studies. Coatings of 50±5 μm thickness were applied to the surface of glass panels and mild steel strips by means of a brush. The coating performance of the resins was evaluated using international standard test methods and involved the measurement of phyisco‐mechanical properties and chemical resistance.FindingsThe tests carried out revealed that the modified PEA based on N‐phthaloylglutamic acid (NPGA) enhanced both phyisco‐mechanical and chemical properties. Also, the resins were incorporated within primer formulations and evaluated as anti‐corrosive single coatings. The results illustrate that the introduction of N‐phthaloylglutamic acid, within the resin structure, improved the film performance and enhances the corrosion resistance performance of PEA resins.Practical implicationsThe modified PEA compounds can be used as binder in paint formulations to improve chemical, physical and corrosion resistance properties.Originality/valueModified PEA resins are cheaper and can be used to replace other more expensive binders. These modified PEA resins can compensate successfully for the presence of many the anticorrosive paint formulations and thus lower the costs. The main advantage of these binders is that they combine the properties of both polyester and polyamide resins based on nitrogenous compound, are of lower cost, and they also overcome the disadvantages of both its counterparts. Also, they can be applied in other industrial applications.

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Polyesteramide resins from dehydrated castor oil and various dibasic acids

Cited by 14 publications

References 8 publications

Castor oil as a renewable resource for the chemical industry

Castor oil as a renewable resource for the chemical industry

Preparation of Sebacic Acid via Alkali Fusion of Castor Oil and its Several Derivatives

Synthesis and characterisation of new modified anti‐corrosive polyesteramide resins by partial replacement of the ingredient source of the polybasic acid for organic surface coatings

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