A process for the synthesis of stabilized copolymers useful for enhancing petroleum recovery from high temperature subterranean petroleum deposits

The present invention provides a process for the preparation of stabilized copolymers by reacting monomer selected from an acrylamide as herein described with 2-acrylamido 2-methyl propane sulphonic acid by solution polymerization. The reaction facilitate in presence of a redox pair of initiators, at a temperature range 5-50° C, under inert atmosphere selected from nitrogen, helium, argon atmosphere, for a period of 4-10 hrs. The resultant co-polymer is neutralized with caustic soda solution and mixed with a thermal stabilizer selected from cross-linking agent N,N-methyl bis acrylamide, trimethylopropane triacrylate to get desired stabilized copolymer.

Patent Assignee: Council of Scientific & Industrial Research (CSIR)

Patent No: IN231672 [India]

Application No: 223/DEL/2001

Inventor(s): Anupom Sabhapondit; Anujjal Sarmah; Arun Borthakur

Issue Date: 27-03-2009

Filing Date: 28-02-2001

Licensing Option: Laboratory willing to jointly develop technology with industrial partner.

Implementing institute: CSIR-North East Institute of Science and Technology [CSIR-NEIST] 

Funding agency: Council of Scientific and Industrial Research (CSIR)

IPC Classification: E21B48/22

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