Reliance Industries Limited

Jayesh Prafullachandra Vora

Raksh Vir Jasra

Padmavathi Garimella

Ninad Deepak Ingle

Pradeep Paresh Kapadia

Pradip Munshi

Pralhad Ambadas Ganeshpure

Ashishkumar Indravadan Parekh

Romal Ramkrushna Chafle

Vadim Lishchinskiy

Rakesh Singh

Nitin Pal

Natalia Abramova

Shashikant Rajan

Elango Subramanyam

Dmitry Khrichenko

Manjeet Singh Choudhary

The present disclosure relates to the field of rubbers. The halogenated isobutylene isoprene rubber is prepared by polymerizing isoprene monomer and isobutylene monomer, followed by halogenation using a halogenating agent. This process of the present disclosure is simple, energy efficient and economic.

Process for preparing halogenated isobutylene isoprene rubber

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.

Preparation of chlorinated polyvinyl chloride

Water absorbent polymers and a process for their preparation are disclosed. The process for preparing water absorbent polymers comprises preparing a slurry with relatively high amounts of polymer particles (in the range of 40 to 55 wt % of the total mass of the slurry) having water absorbed therein. The slurry is then directly spray dried to obtain water absorbent polymers.

Water absorbent polymers and a process for their preparation

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Mumbai, India

Jayesh Prafullachandra Vora