Claims
- 1. A process for the preparation of a diamino-terminated poly(aryl ether ketone) which consists of repeating units of one or more of the following formulae: ##STR50## wherein Ar is independently a divalent aromatic radical selected from phenylene, biphenylene or naphthalene, X is independently O, ##STR51## or a direct bond and n is an integer of from 0 to 3, b, c, d, and e are 0 to 1 and a is an integer of 1 to 4; which process comprises reacting in a dipolar aprotic solvent a dihydroxy-terminated oligomer with a halo-nitro aromatic compound to form a corresponding dinitro-terminated oligomer and subsequently reducing in a hydrogenation solvent the nitro functions of the dinitro-terminated oligomer to amino functions, wherein the reduction is conducted with the dinitro oligomer in suspension.
- 2. A process as defined in claim 1 wherein the halo-nitro aromatic compound is a halo-nitro benzenoid compound having a formulae: ##STR52## where X is a chlorine or fluorine ion.
- 3. A process as defined in claim 1 wherein the dipolar aprotic solvent is diphenyl sulfone.
Parent Case Info
This is a continuation of application Ser. No. 526,386, filed May 21, 1990 now abandoned which in turn is a divisional of Ser. No. 06/889,203, filed Jul. 25, 1986 now U.S. Pat. No. 4,959,424.
US Referenced Citations (8)
Divisions (1)
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Number |
Date |
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Parent |
889203 |
Jul 1986 |
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Continuations (1)
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Number |
Date |
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Parent |
526386 |
May 1990 |
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