Reliance Industries Limited

Shashikant Rajan

Raksh Vir Jasra

Pradeep Paresh Kapadia

Pradip Munshi

Ninad Deepak Ingle

Jayesh Prafullachandra Vora

The present disclosure relates to a process for the preparation of CPVC which includes reacting PVC with chlorine at a pre-determined temperature in the presence of at least one irradiation source having wavelength ranging from 254 and 530 nm while maintaining the radiant flux from 1.5 to 2 W/kg of PVC, irradiance at 0.13 W/cmand the number of photons emitted per second from 3&#xd7;10to 5&#xd7;10, under agitation, for a time period ranging from 3 to 4 hours to obtain CPVC. The CPVC prepared from the afore-stated process has a whiteness index ranging from 89 to 96, a yellowness index ranging from 1.23 to 1.73 and stability ranging from 648 to 684 seconds. The rate of the chlorination reaction after employing the afore-stated process parameters ranges from 1.6 to 4.36 mole/hour/kg.

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Kalyanpur, India

Shashikant Rajan