A kind of polyethersulfone wear-resistant and antifouling coating
A technology of polyethersulfone and coatings, which is applied in the direction of antifouling/underwater coatings, coatings, paints containing biocide, etc., and can solve the problems of low surface energy weather resistance, heat resistance, chemical stability, poor wear resistance, polymerization problems such as high surface tension
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Embodiment 1
[0080] (1) In the reaction vessel, add compound 1 (300mmol) and concentrated sulfuric acid (300ml), stir, add NBS (1mol) in batches, and react in the dark until the end of the reaction, slowly pour the reactant into ice water, and filter with suction , and the filter residue was washed successively with aqueous sodium bicarbonate solution, water and methanol. After the filter residue was dried, it was recrystallized with DMSO to obtain compound 2 as a yellow solid, yield: 15%. 1 HNMR(DMSO): δ7.71(d, J=6.0Hz, 1H), 7.36-7.38(m, 5H), 7.29(d, J=6.0Hz, 1H), 5.84(s, 1H).
[0081]
[0082] (2) In the reaction vessel, add compound 2 (100mmol), add 200mL ethanol to dissolve it, dissolve (200mmol) sodium borohydride in 20mL ethanol solution under stirring, add it dropwise to the reaction flask under ice bath, drop for 60min Finish. React at room temperature until the reaction is complete, filter, wash the solid with water 3 times, dissolve the filter cake with the water used to was...
Embodiment 2
[0102]
[0103] m w =2.1×10 6 ,M n =3.6×10 5 , the molecular weight distribution coefficient is 5.8
[0104] 1 HNMR (DMSO):
[0105] 1 HNMR(DMSO): δ8.74(d, J=7.2Hz, 2H), 8.06(d, J=7.2Hz, 2H), 7.76(d, J=7.2Hz, 1H), 7.65(d, J=7.2 Hz, 1H), 7.29-7.40(m, 5H), 7.12(d, J=6.4Hz, 1H), 6.88(d, J=6.4Hz, 1H), 6.29(s, 1H), 2.51-2.60(m , 4H), 1.53-1.61(m, 4H), 1.30-1.25(m, 12H), 0.85-0.90(m, 6H).
Embodiment 3
[0107]
[0108] m w =3.0×10 6 ,M n =4.1×10 5 , the molecular weight distribution coefficient is 7.3
[0109] 1 HNMR(DMSO): δ8.76(d, J=7.2Hz, 2H), 8.09(d, J=7.2Hz, 2H), 7.61(d, J=7.2Hz, 2H), 7.23-7.40(m, 6H ), 7.12-7.18(m, 4H), 6.86(d, J=6.4Hz, 1H), 6.25(s, 1H), 2.51-2.60(m, 4H), 1.52-1.61(m, 4H), 1.35- 1.28(m, 14H), 0.85-0.91(m, 6H).
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