Ansari S.H.,Research Laboratory Plant Products and Polymer Chemistry |
Naseem G.I.M.,Research Laboratory Plant Products and Polymer Chemistry |
Ahmad S.A.,Research Laboratory Plant Products and Polymer Chemistry |
Hasnat A.,Research Laboratory Plant Products and Polymer Chemistry
Oriental Journal of Chemistry | Year: 2012
In recent years application of renewable resources has become the matter of choice in the field of coating and paint industries.. Jatropha curcas seed oil having suitable unsaturation in the fatty acid chain, low color values and also has low viscosity provide an opportunity to utilize in making urethane polyesteramide resin. Polyesteramide resins contain sufficient amide linkages in addition to ester linkages as a repeating unit and known for improve water and chemical resistance performances. With a view towords the use of Jatropha curcas seed oil, as a precursor for the synthesis of polyesteramide resins and to cure at ambient temperature, toluene diisocyanate (TDI) was incorporated into polyesteramide in varying proportions to obtain urethane modified polyesteramide. It has been found that TDI could be incorporated into polyesteramide upto 6 wt% beyond this wt% the resin loss their fluidity and forms lumpy aggregates.The latter resins were found to cured at room temperature. The synthesized resins were characterized by determination of acid, saponification, iodine and hydroxyl values. The broad structural feature of the polyesteramide and urethane modified polyesteramides were assigned by FTIR, 1HNMR, 13CNMR spectroscopies.