Patent Number: 8,822,605

Title: PH sensitive graft copolymer

Abstract: Graft copolymer (P) which exhibit pH dependent swelling/dissolution properties comprising a hydrophobic back-bone and graft chains comprising acidic monomer. This Graft copolymer (P) do not swell or dissolve at acidic pH prevalent in the stomach and they swell/dissolve at near neutral pH prevalent in the intestinal region. The graft copolymer (P) is useful for the development of drug delivery formulations particularly for oral drug delivery formulations.

Inventors: Muthusamy; Ramesh (Pune, IN), Kulkarni; Mohan Gopalkrishna (Pune, IN)

Assignee: Council of Scientific & Industrial Research

International Classification: C08F 283/02 (20060101)

Expiration Date: 9/02/12018