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Polyhydroxy etherone and its preparation process

A technology of polyhydroxyetherketone and dihydroxybenzophenone is applied in the field of polyhydroxyetherketone and its preparation, and can solve the problems of slow crystallization rate, difficulty in dyeing, performance influence and the like

Inactive Publication Date: 2005-11-09
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the known polyhydroxy ether resin varieties, although they have relatively high glass transition temperature and melting point, the improvement of their properties has been greatly affected due to the inability to crystallize.
In addition, the currently widely used crystalline polymer polyethylene terephthalate (PET) has the disadvantages of slow crystallization rate and difficult dyeing.

Method used

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  • Polyhydroxy etherone and its preparation process
  • Polyhydroxy etherone and its preparation process
  • Polyhydroxy etherone and its preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0020] In a 500ml three-necked flask, add 0.1mol (21.4g) 4,4'-dihydroxybenzophenone and 0.1mol (9.25g) epichlorohydrin, then add 150ml dimethyl sulfoxide (DMSO), stir to make After 4,4'-dihydroxybenzophenone is completely dissolved, continue to stir for 3 hours and raise the temperature of the system to 60°C, then slowly add 10ml of 40wt% NaOH solution dropwise to promote the reaction and eliminate the hydrogen chloride generated during the reaction , after the sodium hydroxide solution was added dropwise, the system was heated up to 120°C, and the reaction was continued for 48 hours, and then the reaction liquid was poured into boiling water together to keep the water boiling to remove the reaction by-product NaCl and organic matter contained in the precipitate. Solvent until the precipitate is powdery, take out the powdery precipitate and put it in an oven to dry at 70°C to obtain 26.0 g of white or light yellow powdery polyhydroxy ether ketone with a yield of 95.9%. The mol...

Embodiment 2

[0032] Add 0.05mol (10.7g) 4,4'-dihydroxybenzophenone and 0.05mol (4.625g) epichlorohydrin into a 500ml three-necked flask, then add 120ml N, N'-dimethylformamide (DMF ), after stirring to completely dissolve 4,4'-dihydroxybenzophenone, continue to stir for 3 hours and raise the temperature of the system to 60°C, then slowly add 5ml of 40wt% NaOH solution dropwise to promote the reaction and eliminate the reaction After the hydrogen chloride and sodium hydroxide solution generated in the process are added dropwise, the temperature of the system is raised to 120°C, and the reaction is continued for 48 hours, and then the reaction solution is poured into boiling water together, and the water is kept boiling to remove the reaction mixture contained in the precipitate. By-product NaCl and organic solvent, until the precipitate is powdery, take out the powdery precipitate and put it in an oven and dry it at 70°C to obtain 12.8 grams of white or light yellow powder polyhydroxy ether ...

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Abstract

A polyhydroxy etherone with high vitrifying temp, smelting point and crystalline performance for engineering plastic of fibrous material is prepared through the polycondensating reaction between 4,4'-dihydroxydiphenyl methanone and epoxy chloropropane in organic solvent.

Description

technical field [0001] The invention relates to a polymer and a preparation method thereof, in particular to a polyhydroxy ether ketone and a preparation method thereof. Background technique [0002] Synthesizing high-performance polymer materials has always been the goal pursued by people. It is an important method to improve the performance of polymer materials to obtain good crystallinity. Such as the successful development of polyaryletherketone resin (PEAKs) by ICI company in the 1980s is a typical example. The glass transition temperature of amorphous polyetheretherketone is only 150°C, but its high crystallinity and high melting point of 350°C endow this material with high performance. In fact, many excellent properties of many high-performance thermoplastic polymer materials strongly depend on the crystallinity of the material. [0003] Polyhydroxyethers, such as bisphenol A-type polyhydroxyethers (Phenoxy), are an important class of thermoplastic polymers, and th...

Claims

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Application Information

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IPC IPC(8): C08G65/16
Inventor 郑思珣杨星天
Owner SHANGHAI JIAO TONG UNIV
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