Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1982-04-12
1983-08-02
Lee, Lester L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528128, 528173, 528176, 528179, 528190, 528191, 528193, 528206, 528207, 528220, 528223, 528271, 528360, 528364, C08G 6700
Patent
active
043967558
ABSTRACT:
Production of an aromatic polyketone by reacting in the presence of a quinquevalent phosphorous halide (preferably PCl.sub.5) and a fluoroalkane sulphonic acid (preferably CF.sub.3 SO.sub.2 OH) the reactants selected from: (a) a mixture of (i) at least one aromatic dicarboxylic acid HO.sub.2 C--Ar--CO.sub.2 H where --Ar'-- is a divalent aromatic radical and CO.sub.2 H is an aromatically bound carboxylic acid group, which dicarboxylic acid is polymerizable with the at least one aromatic compound of (ii), and (ii) at least one aromatic compound H--Ar'--H where --Ar'-- is a divalent aromatic radical and H is an aromatically bound hydrogen atom, which compound is polymerizable with the at least one dicarboxylic acid of (i); (b) at least one aromatic monocarboxylic acid H--Ar"--CO.sub.2 H where --Ar"-- is a divalent aromatic radical and H and CO.sub.2 H are as defined in (a), which monocarboxylic acid is self-polymerizable; and (c) a combination of (a) and (b).
REFERENCES:
patent: 3065205 (1962-11-01), Bonner, Jr.
patent: 3324199 (1967-06-01), Tocker
patent: 4247682 (1981-01-01), Dahl
"Polyarylsulfones, Synthesis and Properties," Journal of Polymer Science, Part A-1, vol. 8, 2035-2047 (1970), H. A. Vogel.
Imperial Chemical Industries plc
Lee Lester L.
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