Preparation of bisphenols salts

A technology for bisphenol and salt products, applied in the field of di-salt preparation, which can solve the problems of unindustrialization, difficulty in obtaining high-purity bisphenol di-salt monomer, and yield of only 50%.
CN1583696AInactive Publication Date: 2005-02-23CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2005-02-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

Preparation of bisphenol double salts are prepared by reacting bisphenol with alkali in organic solvent inorganic aqueous salt solution, and filtering to directly obtain high purity products with yield>90%.
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Description

technical field

[0001] The invention belongs to the method for preparing di-salt from bisphenol in organic solvent or inorganic salt solution and alkali. Background technique

[0002] Polyarylethersulfone, polyetherketone and polyetherimide are currently one of the most widely used heat-resistant polymer materials, especially polyetherimide, which has attracted much attention due to its unique properties and wide application prospects . The traditional method of synthesizing polyarylether ketone and polyarylether sulfone is under the condition of bisphenol and excess alkali, through the method of azeotropic water, in an aprotic polar solvent, such as N-methylpyrrolidone, It can be prepared by polymerizing with dihalogenated monomers. However, the azeotropic water-carrying method is difficult to ensure the complete conversion of bisphenol, and often contains unconverted mono-salt, so the reproducibility of the polymerization reaction is poor, and it is difficult to obtain h...

Claims

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