Esterification of pentaerythritol by carboxylic acids

Kopyshev, M. V.; Хасин, А. В.; Minyukova, T. P.; Khassin, A. A.; Yurieva, T. M.

doi:10.1007/s11144-015-0964-7

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…The esterification of carboxyl acids (C 5 -C 9 ) and pentaerythritol at the temperature range of 150 • C to 170 • C produced water. It caused a minor (not greater than 6%) decrease in the reaction volume and mass, which can be neglected in the calculation [20]. The mass of carbon dioxide from the decarboxylation of rosin also caused a minor change in the reaction mass [8].…”

Section: Kinetic Modellingmentioning

confidence: 99%

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Kinetic Studies of Esterification of Rosin and Pentaerythritol

2021

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Esterification of rosin with pentaerythritol produces rosin pentaerythritol ester (RPE) which is widely used in paint, coating, and pressure-sensitive and hot-melt adhesive industries. Although RPE has excellent valuable applications and has been industrially produced, studies on the reaction kinetics have not been widely reported in the present literature. This work proposed a kinetic study of RPE synthesis by including a series of consecutive reactions forming mono-, di-, tri-, and tetra-ester with decarboxylation of rosin as a side reaction in the kinetics model. For esterification, the reaction rates were determined by the second-order kinetic model. The first-order kinetic order was proposed for decarboxylation. Kinetic experiments were performed at a temperature range of 260 °C to 290 °C. The initial molar ratio of pentaerythritol to rosin (in the mole of OH/COOH) used was between 0.8 and 1.2. A small amount of samples were withdrawn in certain time interval. The sample was analyzed to evaluate their acid and saponification number. Afterward, those experimental data were used to simulate and validate the proposed kinetic model. In general, the proposed model could capture the experimental data well. The resulting activation energies ranged from 65.81 to 129.13 kJ mol−1 for esterification and 233.00 kJ mol−1 for decarboxylation. This model also offers a new insight that correlates well with tetra-ester formation and the softening point.

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Section: Kinetic Modellingmentioning

confidence: 99%

“…Moreover, a pseudo-first-order reaction was also used as a simplification model when using an excess of alcohol [18,19]. A consecutive parallel scheme was proposed for the esterification of pentaerythritol with caproic acid [20]. Additionally, the esterification of hydrogenated rosin and glycerol has also been reported previously.…”

Section: Introductionmentioning

confidence: 99%