The suitability of Phosphorylated Cashew Nut Shell Liquid prepolymer
(PCNSL) as a low cost multifunctional additive for natural rubber
compounding has been reported earlier (Menon et al., 2001). In the
quest for developing low cost reinforcing fillers for the rubber industry,
particularly based on renewable natural resources, PCNSL was used as
an organo-modifier for kaolin and precipitated silica and the effect of
the modified nanofillers in NR was studied, some results of which are
presented in this paper.