A Novel Methodology for the Synthesis of Acyloxy Castor Polyol Esters: Low Pour Point Lubricant Base Stocks

Kamalakar, K.; Mahesh, Gaddam; Karuna, Mallampalli Sri Lakshmi

doi:10.5650/jos.ess15133

Cited by 17 publications

(6 citation statements)

References 33 publications

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“…Castor oil has also been used for developing low pour point lubricant base stocks through the synthesis of acyloxy castor polyol esters. 55 The low pour point property helps to provide full lubrication when the equipment is started and is easier to handle in cold weather. 56 An interesting study by Singh showed the excellent potential of castor oil-based lubricant as a smoke pollution reducer.…”

Section: Introductionmentioning

confidence: 99%

Castor Oil: Properties, Uses, and Optimization of Processing Parameters in Commercial Production

et al. 2016

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Castor oil, produced from castor beans, has long been considered to be of important commercial value primarily for the manufacturing of soaps, lubricants, and coatings, among others. Global castor oil production is concentrated primarily in a small geographic region of Gujarat in Western India. This region is favorable due to its labor-intensive cultivation method and subtropical climate conditions. Entrepreneurs and castor processors in the United States and South America also cultivate castor beans but are faced with the challenge of achieving high castor oil production efficiency, as well as obtaining the desired oil quality. In this manuscript, we provide a detailed analysis of novel processing methods involved in castor oil production. We discuss novel processing methods by explaining specific processing parameters involved in castor oil production.

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Section: Introductionmentioning

confidence: 99%

Castor Oil: Properties, Uses, and Optimization of Processing Parameters in Commercial Production

et al. 2016

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“…Castor oil has been used to develop low pour point lubricant base stocks by synthesizing acyloxy castor polyol esters [69]. Due to having low pour point property, it provides full lubrication to the equipment in cold environment [70].…”

Section: Lubricants Hydraulic and Brake Fluidmentioning

confidence: 99%

Castor (Ricinus communis): An Underutilized Oil Crop in the South East Asia

Chakrabarty¹,

Islam²,

Yaakob³

et al. 2021

Agroecosystems – Very Complex Environmental Systems

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Castor belongs to a monotypic genus Ricinus and subtribe Ricininae. It is one of the oldest plants, getting importance as an agricultural crop for subtropical and tropical countries in the world. Castor is a hardy plant, requires low input, tolerates marginal soils, is easy to establish in the field, is resistant to drought, and gives yield 350–900 kg oil per hectare. Castor oil shows great functional value in energy sector, industry, and pharmaceutical. In recent years, it received increasing demand in the international market for its more than 700 uses, ranging from medicine and cosmetics to biodiesel, plastic, and lubricants. The oil is significant for many industrial uses compared with other oils from plant sources because of its high and low temperature-tolerant properties. This chapter has been written to provide botanical descriptions, ecology, agro-technology, and versatile industrial uses.

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“…Hence, metathesized castor acylated products developed employing self-metathesis, followed by acylation resulted in products with excellent tribological properties, whereby, the lubricant can be used without any EP additives (Table 1). Though there are reports on chemical modification of vegetable oils in particular castor oil [39][40][41][42], the present study focuses on the development of an ideal biolubricant base stock with high viscosity index, low pour points and superior anti-wear properties which can be achieved via the metathesis route.…”

Section: Lubricant and Tribological Propertiesmentioning

confidence: 99%

Metathesized castor oil acylated derivatives: lubricants base stocks with low pour points and superior anti-wear properties

2019

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Castor (Ricinus communis) oil containing ricinoleic acid 89% was self-metathesized in the presence of Grubbs' second generation catalyst (0.025 mmol), followed by epoxidation and insitu hydroxylation using Prilezhaev dihydroxylation method to obtain hydroxylated derivatives in 93% yields. MALDI study has shown that the metathesized products comprised of a mixture of monomer, dimer and trimer metathesized products. The hydroxylated derivatives were acylated using acetic, propionic, butyric and hexanoic anhydrides in 85-90% yields. The acylated base stocks being highly branched and of high molecular weights exhibited very low pour points (− 30 to − 40 °C) and broad viscosity ranges 45.5 cSt to 60.0 cSt at 40 °C, high viscosity indices , excellent anti-wear properties (0.52-0.69 mm), good thermal and oxidative stabilities along with high load carrying capacities (165-184 kg) suitable for multi-range industrial applications. These base stocks can be used with the addition of minimum additives during the formulation.

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A Novel Methodology for the Synthesis of Acyloxy Castor Polyol Esters: Low Pour Point Lubricant Base Stocks

Cited by 17 publications

References 33 publications

Castor Oil: Properties, Uses, and Optimization of Processing Parameters in Commercial Production

Castor Oil: Properties, Uses, and Optimization of Processing Parameters in Commercial Production

Castor (Ricinus communis): An Underutilized Oil Crop in the South East Asia

Metathesized castor oil acylated derivatives: lubricants base stocks with low pour points and superior anti-wear properties

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