1,3-oxazoline compounds useful as anionic initiators suitable for polymerization of vinyl polymers

US5266702A · kind A · utility

Assignee

• COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH · IN

Inventors

• Durairaj Bhaskaran · Jamkhed, IN
• Pradeep K. Dhal · Westford, US
• Sanjay Kashikar · Kelmis, BE
• Ratnaprabha S. Khisti · Jamkhed, IN
• Babanrao M. Shinde · Pune, IN
• Swaminathan Sivaram · Pune, IN

Key dates

• Filing date: Sep 19, 1990
• Grant date: Nov 30, 1993
• Expiry date: Sep 19, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D263/32
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are reactive anionic initiators of the general formula [ArCHR.sub.1 R.sub.2 N(R.sub.3 R.sub.4 R.sub.5 R.sub.6 ] wherein Ar=phenyl, substituted phenyl, or a heterocyclic compound, R.sub.1 =R.sub.2 =H, ester, cyano, alkyl, aryl, 1,3-oxazoline, N,N-dimethyl amide and other similar alpha activating groups, or combination of them, or one of R.sub.1 or R.sub.2 together with Ar, where Ar is a phenyl or substituted phenyl, is a nitrogen atom containing heterocyclic compound and the other being a nitrile group, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 may be same or different and represent substituted alkyl, cycloalkyl, arylalkyl or aryl or to of the R.sub.3, R.sub.4, R.sub.5 and R.sub.6 together with nitrogen atom form a heterocycle with the condition that the sum of all carbon atoms of all R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is from 12 to 50 and no more than one of the R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is an aryl derivative. The initiators which are in the form of solids or liquids are insoluble and can be incorporated which enable the synthesis of a wide range of polymers with functional groups. These initiators are useful for polymerizing very reactive vinyl monomers such a…