A kind of unsaturated fluorocarbon compound and its preparation method and application
A fluorocarbon and unsaturated technology, applied in the field of polymer materials, can solve problems such as low glass transition temperature, poor multilayer ability, and obstacles to 5G communication terminals, and achieve high critical surface tension, excellent mechanical properties, and excellent The effect of dielectric properties
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Embodiment 1
[0044] The present invention provides a kind of unsaturated fluorocarbon compound, and its structure is as shown in formula I:
[0045]
[0046] The preparation method of the compound shown in formula I is as follows: 1 mol perfluorododecanol is mixed with 1.2 mol 4-vinyl-benzoic acid, 100 mL of 0.1 mol / L sodium hydroxide solution is added, and 100 mL of 0.1 mol / L sodium hydroxide solution is added. to room temperature, washed 5 times with 500 mL of water, separated, added with anhydrous sodium sulfate, allowed to stand for 2 h, and filtered to obtain the compound represented by formula I.
[0047] 1 H NMR (CDCl 3 ,500MHz):δ7.95~7.89(m,2H,Ar-H),7.43~7.36(m,2H,Ar-H),6.65~6.60(m,H,CH 2 =C H ), 5.63~5.57(t, H, C H 2 =CH), 5.21~5.16(t, H, C H 2 =CH), 4.62~4.55(s, 2H, CH 2 ).
Embodiment 2
[0049] The present invention provides an unsaturated fluorocarbon compound whose structure is shown in formula II:
[0050]
[0051] The preparation method of the compound shown in formula II is as follows: 1 mol of perfluorobutanol is mixed with 1.2 mol of 2-methyl-1,4-dihydrobenzoic acid, 100 mL of 0.1 mol / L sodium hydroxide solution is added, and the temperature is mechanically stirred at 80° C. The reaction was heated for 2.5 h, cooled to room temperature, washed with 500 mL of water for 5 times, separated, added with anhydrous sodium sulfate, allowed to stand for 2 h, and filtered to obtain the compound represented by formula II.
[0052] 1 H NMR (CDCl 3 , 500MHz): δ5.58~5.48(m, H, CH=CH), 5.38~5.30(t, H, C H =C), 4.45~4.39(s, 2H, CH 2 ), 3.71~3.65 (d, H, CH), 2.67~2.60 (t, 2H, CH) 2 ), 1.75~1.68(t, 3H, CH 3 ).
Embodiment 3
[0054] The present invention provides a kind of unsaturated fluorocarbon compound, and its structure is as shown in formula III:
[0055]
[0056] The preparation method of the compound represented by formula III is as follows: 1 mol of perfluorooctanol is mixed with 1.2 mol of 5-vinyl-2-picolinic acid, 100 mL of 0.1 mol / L sodium hydroxide solution is added, and the reaction is heated at 70° C. with mechanical stirring for 3 h, Cool to room temperature, wash 5 times with 500 mL of water, separate the liquid, add anhydrous sodium sulfate, let stand for 2 h, and filter to obtain the compound represented by formula III.
[0057] 1 H NMR (CDCl 3 ,500MHz):δ9.03~8.96(m,H,Ar-H),8.23~8.15(m,2H,Ar-H),6.66~6.61(m,H,CH 2 =C H ), 5.71~5.65(t, H, C H 2 =CH), 5.28~5.22(t, H, C H 2 =CH), 4.67~4.61(s, 2H, CH 2 ).
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