Kinetics of reaction of ethylenediamine and dimeric fatty acids

Kale, Vijay; Vedanayagam, H. Sumathi; Devi, K. Sita; Rao, S. Venkob; Lakshminarayana, G.; Rao, M. Bhagwant

doi:10.1002/app.1988.070360701

Cited by 12 publications

(3 citation statements)

References 2 publications

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“…8 shows that, the rate parameters obey the Arrhenius law. Table 4 shows the Arrhenius parameters for rate constants and equilibrium constant and by comparing with noncatalytic reaction [2], the activation energy is 1.089 times increases and frequency factor is 687.1 times increases. For equilibrium constant, because of the fact that polyamidation reaction is slightly exothermic and the heat of reaction is very low [8], so it can be concluded that the equilibrium constant is independent of temperature and this can be seen from Table 4 where the activation energy is very low.…”

Section: Modeling Of the Distillatementioning

confidence: 97%

“…Kale et al [2] studied the kinetics of the reaction between ethylenediamine and dimeric fatty acids in melt phase in the temperature range of 399-465 K and found that reaction was second order with activation energy of 76.44 kJ mol −1 for conversion of up to 90%. For higher conversion the reaction was overall third order with an activation energy of 68.88 kJ mol −1 .…”

Section: Introductionmentioning

confidence: 98%

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Study on kinetics of polymerization of dimer fatty acids with ethylenediamine in the presence of catalyst

Heidarian

Ghasem

Daud

2004

Chemical Engineering Journal

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Section: Modeling Of the Distillatementioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

Study on kinetics of polymerization of dimer fatty acids with ethylenediamine in the presence of catalyst

Heidarian

Ghasem

Daud

2004

Chemical Engineering Journal

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“…Moreover, reaction kinetic studies have been carried out to optimize the processability conditions for industrial production 10–13. For example, Kale and coworkers10, 11 even found that the reaction between ethylenediamine and DA in the melt phase in the temperature range 124–190°C was second order with an activation energy ( E a ) of 76.4 kJ/mol for a conversion of up to 90%, but for higher conversions or conversions with benzyl alcohol as a solvent, the reaction was third order with E a 's of 68.9 or 128.5 kJ/mol, respectively. Heidarian et al12, 13 proved that the order of the reaction at conversions above 90% could change from second to third order.…”

Section: Introductionmentioning

confidence: 99%

Morphology and thermal properties of nylon copolymers containing dimer acid, adipic acid, and hexamethylenediamine

Wang

Fang

Yang

et al. 2010

J of Applied Polymer Sci

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The effects of the molar ratio of adipic acid to total diacid on the phase morphology and thermal properties of nylon copolymers containing dimer acid, adipic acid, and hexamethylenediamine were investigated. A significant structural transition from the c form to a and b mixture forms occurred with increasing molar ratio. Meanwhile, the content of the crystals increased markedly. A r-p* hyper conjugation effect was present in all of the as-prepared samples. A strong r-p* hyper conjugation effect could decrease the average distance between interchain amide groups and suppress the scission of the CAN bond through the formation of highly combining aza double-bond C¼ ¼N groups, which would, consequently, make the nylon copolymer much more stable. Differential scanning calorimetry-thermogravimetric analysis results indicate that the low thermal stability of the nylon copolymers with higher molar ratios of adipic acid to total diacid was simply due to the formation of cyclopentanone and caprolactam at 350-4208C, whereas for the nylon copolymers with lower molar ratios, the scission of the CAC bond at 430-5008C directed the pyrolysis of the main chain.

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Diamines and Higher Amines, Aliphatic

Carter¹,

Doumaux²,

Kaiser³

et al. 2000

Kirk-Othmer Encyclopedia of Chemical Technology

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The aliphatic diamine and higher amine family encompasses a wide range of multifunctional and multireactive compounds. The so‐called ethyleneamines family, which includes ethylenediamine and its homologues, the polyethylene polyamines, have found the broadest commercial application. Representative physical and chemical properties are given. Three main processes are used currently to produce the ethyleneamines: the reaction of ethylene dichloride with ammonia to produce the whole spectrum of ethyleneamine products; the reductive amination of monoethanolamine to produce the lighter ethyleneamines, mainly ethylenediamine; and the catalytic reaction of monoethanolamine with ethylenediamine to produce higher ethyleneamines. Worldwide capacity for ethyleneamines is about 295 t/yr. Typical specifications and test methods, storage and handling guidelines, and health and safety factors are discussed. This family of compounds finds use in a wide variety of applications by virtue of their unique combination of reactivity, basicity, and surface activity. With a few significant exceptions, they are used predominantly as intermediates in the production of functional products. Significant applications include fungicides, lubricant and fuel additives, epoxy curing agents, polyamide resins, paper resins, and chelates.

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Kinetics of reaction of ethylenediamine and dimeric fatty acids

Cited by 12 publications

References 2 publications

Study on kinetics of polymerization of dimer fatty acids with ethylenediamine in the presence of catalyst

Study on kinetics of polymerization of dimer fatty acids with ethylenediamine in the presence of catalyst

Morphology and thermal properties of nylon copolymers containing dimer acid, adipic acid, and hexamethylenediamine

Diamines and Higher Amines, Aliphatic

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