2,6-naphthalic acid based heterocyclic polyaryletherketone and preparation method thereof

A technology of polyaryletherketone and naphthalenedioic acid, which is applied in the field based on 2, can solve problems such as limited application range, difficult processing, and difficult dissolution, and achieves the effects of simple preparation process, low cost, and reduced force between molecular chains

Inactive Publication Date: 2013-09-11
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although polyaryletherketone has excellent properties such as good stability, its insoluble, difficult to process and high cost severely limit its application range

Method used

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  • 2,6-naphthalic acid based heterocyclic polyaryletherketone and preparation method thereof
  • 2,6-naphthalic acid based heterocyclic polyaryletherketone and preparation method thereof
  • 2,6-naphthalic acid based heterocyclic polyaryletherketone and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0031] Step 10, the preparation of phthalazinone monomer: react with phenols of different substituents and phthalic anhydride, the solvent is 1,2-dichloroethane, and the catalyst is AlCl 3 ; The molar ratio of phenol and phthalic anhydride of the different substituents is 1: 1, during preparation, first complete the feeding under the condition of ice bath, then react at room temperature for 1h, then react in 60°C water bath for 3h; glacial hydrochloric acid After settling, let it stand, and obtain the intermediate acid by suction filtration; then, the intermediate acid is subjected to steam distillation, suction filtration, and drying; finally, the dried intermediate acid is dissolved in n-butanol, heated to reflux, and then Add hydrazine hydrate dropwise, the molar ratio of the intermediate acid to hydrazine hydrate is 1:1.5; after the dropwise addition, react for 2 hours, and filter with suction to obtain the phthalazinone monomer;

[0032] The structural formula of the inte...

Embodiment 1

[0049] (1) Preparation of phthalazinone monomer: in a three-necked flask equipped with a mechanical stirring device, an exhaust gas absorption device, and a thermometer, add 2-isopropylphenol 0.05mol (6.8g) and the solvent is 1,2 dichloro Ethane, ice bath. When the temperature drops to about 0°C, add anhydrous AlCl three times at intervals of about 15 minutes. 3 A total of 0.15 mol (20.15 g). anhydrous AlCl 3 After the dissolution was complete, 0.05 mol (7.41 g) of phthalic anhydride was added three times. After dissolving, react at room temperature for 1 h, then react at 60°C for 3 h. The product was poured into 300ml of glacial hydrochloric acid to settle while stirring, and the intermediate acid 2-(3'-isopropyl-4'hydroxybenzoyl)benzoic acid was obtained by suction filtration.

[0050] The obtained intermediate acid was steam distilled until the massive solid became a powder, and no oil phase was distilled out, filtered with suction, and dried. The obtained intermediate...

Embodiment 2

[0062] This part differs from Example 1 in that:

[0063] Described intermediate acid 2-(4'-hydroxybenzoyl) benzoic acid structural formula is as follows:

[0064]

[0065] Ar is

[0066] The structural formula of the 4-(4'-hydroxyphenyl)-2,3-naphthyridine-1-one is as follows:

[0067]

[0068] Ar is

[0069] The polyaryletherketone structural formula is as follows:

[0070]

[0071] Ar is

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Abstract

The invention provides a 2,6-naphthalic acid based heterocyclic polyaryletherketone and a preparation method thereof. The heterocyclic polyaryletherketone is prepared from an activated bi-fluoro monomer 2,6-2 (4'-fluorophenyl)naphthalene and bisphenol-like monomers having different substituent groups and containing a bisphthalazinone structure through carrying out N-C coupling polymerization. The polymer is a high-solubility novel heterocyclic polyaryletherketone with an intrinsic viscosity of 0.73-1.58 dL / g, a glass transition temperature of above 243 DEG C and a 5% decomposition temperature of above 450 DEG C. The heterocyclic polyaryletherketone prepared by using the method disclosed by the invention can be applied to the field of preparation of high-performance functional membranes.

Description

【Technical field】 [0001] The invention relates to the field of polymer materials, in particular to a heterocyclic polyaryl ether ketone based on 2,6-naphthalene dioic acid and a preparation method thereof. 【Background technique】 [0002] Polyaryletherketone and its derivatives have attracted more and more attention from national high-tech industries such as aerospace, precision machinery and electronic appliances due to their high thermal stability, outstanding chemical stability and remarkable dielectric properties. Starting from molecular design, it is of great significance to expand its application by developing new difluoro monomers to synthesize new polyaryletherketones. [0003] Although poly(aryl ether ketone) has excellent properties such as good stability, its insoluble, difficult to process and high cost severely limit its application range. Overcoming these shortcomings to obtain poly(aryl ether ketone) with excellent comprehensive properties to broaden its appli...

Claims

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Application Information

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IPC IPC(8): C08G73/00C08G73/06C08G65/40
Inventor 程琳杜盛华鹿瑞敏
Owner HUAQIAO UNIVERSITY
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