“…12 –14 They are biodegradable and abundantly available in nature at a relatively lower cost. They are used widely in various applications, such as “surfactants, surface coatings, paints, adhesives, foams, resins, foundry core oil binder, flame retardant plasticizer for plastics, and as monomers for polymer synthesis.” 15 –24 However, physical addition of cardanol/PCP during rubber compounding causes shredding, migration, evaporation, and degradation to some extent leading to deterioration of thermo-mechanical properties of the rubber. In order to overcome these difficulties, “physical addition of cardanol has been avoided and cardanol and its phosphorylated derivative have been grafted onto the natural rubber in the latex as well as in solution stages as reported earlier by researchers of this group to impart multifunctional activities to NR.” 25,26 Das et al 27 reported on the latex stage functionalization of NBR with cardanol, a multifunctional additive.…”