Method for preparing aromatic polyether polymers
AssigneeGeneral Electric Company
InventorsJohn Christopher Schmidhauser, Daniel Joseph Brunelle
Life of this patent
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Abstract
Aromatic polyether polymers, illustrated by polyethersulfones, polyetherketones and polyetherimides, are prepared by a phase transfer catalyzed reaction between a salt of at least one dihydroxyaromatic compound and at least one substituted aromatic compound such as bis(4-chlorophenyl) sulfone, bis(4-chlorophenyl) ketone or 1,3-bisN-(4-chlorophthalimido)!benzene, in a monoalkoxybenzene such as anisole as diluent and in the presence of a phase transfer catalyst, preferably a hexaalkylguanidinium salt.
Claims20
A method for preparing an aromatic polyether polymer which comprises contacting, in at least one monoalkoxybenzene as diluent, substantially equimolar amounts of at least one alkali metal salt of a dihydroxy-substituted aromatic hydrocarbon and at least one substituted aromatic compound of the formula
- Z(A.sup.1 --X.sup.1).sub.2, (I)
- wherein Z is an activating radical, A.sup.1 is an aromatic radical and X.sup.1 is fluoro, chloro, bromo or nitro, in the presence of a catalytically active amount of a phase transfer catalyst.
A composition capable of conversion to an aromatic polyether polymer upon heating at a temperature in the range of about 125.degree.-250.degree. C., said composition comprising at least one monoalkoxybenzene as diluent, substantially equimolar amounts of at least one alkali metal salt of a dihydroxy-substituted aromatic hydrocarbon and at least one substituted aromatic compound of the formula
- Z(A.sup.1 --X.sup.1).sub.2, (I)
- wherein Z is an activating radical, A.sup.1 is an aromatic radical and X.sup.1 is fluoro, chloro, bromo or nitro, and a catalytically active amount of a phase transfer catalyst.
Dependencies are inferred from the claim text.