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Preparation of monomer of dual functional groups containing lateral group phenylacetylene

A bifunctional group, phenylacetylene benzene technology, applied in the field of polymer materials and their synthesis, can solve the problem of damage to the mechanical properties of the polymer matrix

Inactive Publication Date: 2005-08-31
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the use of end-capped forms, the increase of phenylacetylene content is based on the premise of reducing the length of molecular segments, the improvement of thermal properties is limited to a certain extent, and some mechanical properties of the polymer matrix are damaged to a certain extent. Wait

Method used

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  • Preparation of monomer of dual functional groups containing lateral group phenylacetylene
  • Preparation of monomer of dual functional groups containing lateral group phenylacetylene
  • Preparation of monomer of dual functional groups containing lateral group phenylacetylene

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Embodiment 1: the preparation of PEP-DF

[0047] 4,4'-difluorodiphenyl ketone (218g, 1mol), anhydrous K 2 CO 3 (28g, 0.2mol) and N, N-dimethylformamide (DMF) (1000ml), toluene (500ml) is put into the 3000ml that is equipped with nitrogen vent, constant pressure dropping funnel, belt water device, reflux condenser In a three-necked flask, resorcinol (11.0 g, 0.1 mol) dissolved in DMF was added dropwise to the reaction system under reflux of toluene, and water was added for 0.5 hours after the dropwise addition. Exclude toluene, then DMF reflux reaction for 4 hours, discharge into acidic water, filter the precipitate, wash with water, and dry. The unreacted 4,4'-difluorodiphenyl ketone was distilled off under reduced pressure, and then the residual component was extracted with ethanol to obtain a white trimer, which was dried in vacuum with a yield of 81%.

[0048] The above-mentioned trimer (50.6g, 0.1mol), p-bromobenzoyl chloride (26g, 0.12mol), and dichloromethane (...

Embodiment 2

[0051] PEP-DF (7.11g, 10mmol), resorcinol (1.1g, 10mmol), anhydrous potassium carbonate (2g) and N,N-dimethylformamide (25ml), benzene (25ml) were added to the container In a three-necked flask equipped with a nitrogen port, mechanical stirring, thermometer, water dispenser and reflux condenser, under the protection of nitrogen, heat to reflux with water for 2 hours. After excluding benzene, heat up to 150°C, react for 6 hours, pour the product into acidic water, pulverize and filter with a pulverizer, boil the solid directly with methanol and filter, repeat 5 times, then boil and filter with distilled water, repeat 5 times, in Dry in an oven to obtain a refined polyaryletherketone homopolymer with a yield of 92%.

Embodiment 3

[0053] Same as the method of embodiment 2, just change resorcinol into hydroquinone (or bisphenol A or other bisphenol monomers) or change DMF to be N, N-dimethylacetamide (or N- Methylpyrrolidone or sulfolane), benzene is changed to toluene, and the remaining methods are identical to obtain refined polyaryletherketone homopolymer.

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Abstract

A dual-functional-group monomer containing phenylacetylene as side group is prepared from the Br contained intermediate through reacting on phenylacetylene in Pd(O) / Cu(I) catalyst system to obtain bifluorine and biphenol. It can take part in polycondensating reaction on other monomers to obtain the polyacryletherone or polyaryether containing phenylacetylene as side group.

Description

technical field [0001] The invention belongs to the field of macromolecular materials and their synthesis, in particular to difluoro monomers and bisphenol monomers containing phenylacetylene groups and self-crosslinkable polyarylether ketones or polyarylethers in the synthesis of phenylacetylene groups applications in polymers. Background technique [0002] In recent years, high-temperature-resistant high-performance polymer materials have become a hot and frontier research topic in the polymer field. Many thermoplastic resins such as polyamide, polyethersulfone, polyarylether, and polyaryletherketone have excellent properties such as high thermal stability and good mechanical properties, and have important application prospects in many fields. However, they also have shortcomings, which represent high-performance linear amorphous polymers. They do not have high enough thermal stability, chemical resistance, good solvent resistance, and are easy to dissolve, swell or ruptu...

Claims

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Application Information

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IPC IPC(8): C07C37/11C07C39/21C07C45/68C07C49/84C08G83/00C08G85/00
Inventor 姜振华马晓野陈春海李雪峰关绍巍王冬
Owner JILIN UNIV
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