Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-09-17
1976-03-02
Lee, Lester L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 49, 260 63K, 260 63HA, 260 79, 260 793M, 260823, C08G 6538, C08G 6540, C08G 7520
Patent
active
039417484
ABSTRACT:
An aromatic polymer comprising recurring units having the formula --Ar--Q-- is made by a new process which comprises heating an alkali metal fluoride with an activated halophenol of the formula X--Ar--QH and/or a substantially equimolar mixture of an activated dihalobenzenoid compound of the formula X--Ar--X and a dihydric phenol of the formula HQ--Ar--QH in which formulae Ar and Q are respectively a bivalent aromatic residue and an oxygen or sulphur atom and may vary from unit to unit in the polymer chain and X is a halogen atom, the amount of alkali metal fluoride being such that together with any of the X atoms that are fluorine the total number of fluorine atoms in the reaction system is at least twice the number of --QH groups in the system.
REFERENCES:
patent: 3634355 (1972-01-01), Barr et al.
Ingold, Structure and Mechanism in Organic Chemistry, Cornell Univ. Press, Ithica, N.Y., 1953 (p. 71).
Hine, Physical Organic Chemistry, 2d ed., McGraw-Hill, N.Y. 1962 (pp. 85-87).
Lavrischev et al, (Russian) J. Gen. Chem. 30, 3037-3044(1960).
Vorozhtsov et al, (Russian) J. Gen. Chem. 28, 40-44(1958).
Imperial Chemical Industries Limited
Lee Lester L.
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