The impact of the main process variables (temperature, catalyst concentration, agitation, ratio of content, time of reaction) on the degration of the oxirane ring of epoxidizedcardanol by hydrogen active compound (methanol) when a homogeneous acid catalyst used, is analyzed in detail. Cashew Nut Shell Liquid (CNSL), an agricultural by-product abundantly available in tropical countries such as Vietnam, India, is one of the major and economical resources of naturally occurring phenols. Cardanol a by product of CNSL could be epoxidized by reacting carbon-carbon double bonds of long unsaturated chain with peracids via the Prileshajev-epoxidation process or the conventional process. This paper presents a simple and convenient method to oxirane ring opening of epoxidizedcardanol by methanol with preservation of p-toluenesulfonic acid catalyst. The method uses mild reaction conditions: low temperature of 400C – 500C and low pressure (air pressure). The results shown that the oxirane ring opening of epoxidizedcardanol efficiency reacheres 76% at 500C, stirring rates 1500 rpm, 6% p-toluenesulfonic acid catalyst and time of reaction 3h. The product of polyolcardanol is also characterized by FT-IR, 1H-NMR and 13C-NMR.
epoxidizedcardanol, oxirane ring openning, methanol, polyolcardanol, p-toluenesulfonic acid catalyst
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