Derivatives of polyethers and of pentacyclic heterocycles, their

Details Derivatives of polyethers and of pentacyclic heterocycles, their Derivatives of polyethers and of pentacyclic heterocycles, their

1994-07-14

1997-07-01

Schofer, Joseph L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20704, C07D20708

Patent

active

056440642

ABSTRACT:
It concerns a monomer, a polymer obtained from the monomer and a process for obtaining the said polymer. The monomer consists of a polyether containing at least 3 ether units and pyrrole or thiophene units bonded to the ends of the chains of this polyether via, for each of these heterocycic compounds, either their carbon atoms in the 3,3'-positions of their heterocycles or, as regards more particularly the pyrrole groups, via their respective nitrogen atoms, the 2- and 2'-positions of these heterocycles being, however, free of all substitutions or, at the very most, substituted by easily removable groups (protective groups, for example).
Application to the purification and recovery of metal ions such as radioactive silver.

REFERENCES:
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Database WPI, Week 8719, Derwent Publications Ltd., London, GB, AN 87-133991 & SU-1-1 213 569 (Yagodin G A), 30 Sep. 1986.
Acta Chemica Scandinavica, vol. 47, No. 2, (1993), pp. 184-190, by Hans Zimmer et al, entitled "Synthesis of Novel Crown Ethers Derived from 3,3'-Dimethyl-2,2'-Bithienylene and Preparation of a,.omega.-Bis-(3-methylenethienyl) Ethers".
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Solid State Ionics, vol. 28-30, 1988, pp. 1192-1196, by M. G. Minett, J. R. Owens, entitled "Polymeric Insertion Electrodes".
J. Phys. Chem., vol. 91, (1987), pp. 6706-6714, by J. Roncali et al, entitled "Effects of Steric Factors on the Electrosynthesis and Properties of Conducting Poly(3-alkylthiophenes)".
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