FR1601094A
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FR
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Bis (dicarboxy-3,4-benzoyl)-1,3-benzene and its - anhydride as polymer precursors
Assignee: —
•
Filing: 1968-03-25
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Granted: 1970-08-10
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Expires: 1988-03-25
Abstract
Abstract Bis-(dicarboxy-3,4-benzoyl)-1,3 and its anhydride as raw materials of imide dyes, epoxyhardeners and moulding compsns. Cpds. have improved fusibility and solubility and are pref. prepd by Friedel-Crafts condensation of isophthaloyl chloride and an orthodialkyl aromatic hydrocarbon followed by oxidation to the tetracid. Conversion to the anhydride is achieved by low temp. treatment with acetic anhydride.
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 22:07
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/32; C07C65/34; C07C45/00; C07C45/004; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/36; C07C45/45; C07C45/46; C07C49/00; C07C49/76; C07C49/782; C07C49/784
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