The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2018
Filed:
Jul. 21, 2015
Reliance Industries Limited, Mumbai, Maharashtra, IN;
Pradip Munshi, Vadodara, IN;
Jayesh Prafullachandra Vora, Mumbai, IN;
Ninad Deepak Ingle, Pune, IN;
Pradeep Paresh Kapadia, Mumbai, IN;
Raksh Vir Jasra, Vadodara, IN;
Shashikant Rajan, Kalyanpur, IN;
RELIANCE INDUSTRIES LIMITED, Mumbai, IN;
Abstract
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 3×10to 5×10, 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.