Using the experimental data for permittivity build-up of resin, naphthalene
and paraffin wax hound rutile samples obtained in the X-band of microwave
frequency (at 9.6 GHz), two types of empirical relation governing the varia
tion of permittivity with fractional weight of the binders have been obtain
ed. Parameters involved in the formation have been evaluated using non-line
ar regression method and correlation of parameters with the nature of the b
inders have been sought. The present paper deals with the second type of fo
rmulation only.