Synthesis of crude oil pour point depressants via polycondensation of cashew nut shell liquids
Abstract
The polycondensation of cashew nut shell liquid (CNSL) with formaldehyde was carried out in order to synthesise a pour point depressant (PPD) for paraffinic crude oils. Experimental results showed that the obtained CNSL-formaldehyde novolac resin gave good performance, decreasing the pour point of crude oil by as much as 15oC. In addition, it was also showed that there is an optimum molecular weight value of the synthesised polymer, with which the ability for depression of pour point of crude oil is expected as maximum. Thus, it is believed that with proper molecular weight control, CNSL could be polymerised into a good PPD for local crude oil.
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