Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras

Group 4 Metal Aryloxy Compounds

Categories for this Invention

Category: Chemistry & chemical Analysis

Industry: Catalysts & Chemical, Polymer

Applications: Polymerization catalyst/ biodegradable polymer/ Lactide polymerization

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Problem Statement

  • Polymerization catalyst for polymerization of Lactide monomers are either a solvent, or a co-catalyst or an elaborate ligand or non-environment friendly conditions.
  • All these factors are responsible for making the polymerization reaction process laborious, expensive and complicate.
  • Further in some cases the catalyst used is highly toxic thereby making the resulting polymer incompatible for bio medial application.
  • So a novel polymerization catalyst which is devoid of the above said draw back is the urgent need in the state of art.

Technology

  • The present patent discloses synthesis of group 4 metal aryloxy compounds as bulk polymerization catalysts for lactide polymerization having a general molecular formula (M)(OC6Rs)n(OH-R’)m.
  • The Group 4 metal (Ti, Zr Hf) aryloxy compounds are synthesized from Ti(O-iPr)4, Zr(O-iPr)4(HO-iPr) or Hf(O-tBu)4 and several phenols having different substituents on the phenyl ring, 1:4 stoichiometric ratio in toluene, employing the alcoholysis route.
  • The synthesized aryloxy compounds have been characterized thoroughly by 1H and 13C NMR spectroscopy, electrospray ionization mass spectrometry (ESI-MS) and their purity has been assured by correct elemental analysis values.

Key Features / Value Proposition

  • Polymerization Without any Solvent
  • Cost-effective
  • Environment Friendly Condition
  • Biodegradable Polymer
  • Does Not Require any Co-catalyst
  • Reduced Toxicity & Living Polymer
  • Produce High Molecular Weight Polymer

Questions about this Technology?

Contact For Licensing

sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in

Research Lab

Prof. Debashis Chakraborty

Department of Chemistry

Intellectual Property

  • IITM IDF Number: 2215
  • IP Patent Number: 406714 (Granted)

Technology Readiness Level

TRL- 3

Proof of Concept

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