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By: Saurabh K. Tiwari and Virendrakumar Gupta.
1. Saurabh K. Tiwari*, Deputy General Manager, Department of Polymer Synthesis & Catalysis Reliance Research and Development Centre, Reliance Industries Limited, Navi Mumbai-400701, India
1. Virendrakumar Gupta, Senior Vice President, Department of Polymer Synthesis & Catalysis,
Reliance Research and Development Centre, Reliance Industries Limited, Navi Mumbai-400701, India
The present work is related to the process for the synthesis of a reactor made chlorinated polyvinyl chloride (CPVC) from commercially available thermally treated unsaturated PVC. The synthesis of CPVC is a two-step process. The first step is the controlled thermal treatment of the PVC to generate the unsaturation in the PVC chain. The second step is the chlorination of the thermally treated PVC in presence of an initiator and water as dispersion media. Maximum chlorination is achieved in 4 hours reaction time with 68% chlorine content in PVC. The physical properties of CPVC resin were evaluated and found comparable with commercial CPVC resin. SEM images showed very good morphology of CPVC resin without agglomeration of the particles. The chlorination of the PVC process can be carried out both in a solution as well as in the suspension or dispersion stage.
Citation:
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