Synthesis of hyperbranched azo polymer and modification method of same
A kind of technology of azo polymer and synthesis method, which is applied in the direction of chemical instruments and methods, optical record carriers, color-changing fluorescent materials, etc., to achieve the effect of cheap raw materials, easy availability of raw materials, and low price
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Embodiment 1
[0030] Raw materials and ratio:
[0031] Azoresorcinolsulfonic acid 5.0g
[0032] 4,4’-Diphenylmethane diisocyanate 5.9 g
[0033] N,N-Dimethylformamide 207.0 g
[0034] Preparation Process:
[0035] Firstly, azoresorcinolsulfonic acid was dissolved in DMF to form a solution with a concentration of 5 ± 0.25% by mass, which was set aside. In pass N 2 Under certain conditions, add 4,4'-diphenylmethane diisocyanate (MDI) and DMF into a four-neck flask, stir and dissolve at 35±5°C to form a solution with a mass percentage concentration of 5±0.25%, and 35±5°C Next, add azoresorcinolsulfonic acid DMF solution dropwise over 4 to 5 hours. After the dropwise addition, at 35±5° C., a constant temperature reaction was carried out for 248 hours, and the synthesis reaction was completed.
Embodiment 2
[0037] Raw materials and ratio:
[0038] Azoresorcinolsulfonic acid 3.0g
[0039] 4,4’-Diphenylmethane diisocyanate 2.4 g
[0040] N,N-Dimethylformamide 103.0 g
[0041] Preparation Process:
[0042] Firstly, azoresorcinolsulfonic acid was dissolved in DMF to form a solution with a concentration of 5 ± 0.25% by mass, which was set aside. In pass N 2 Under certain conditions, add 4,4'-diphenylmethane diisocyanate (MDI) and DMF into a four-neck flask, stir and dissolve at 35±5°C to form a solution with a mass percentage concentration of 5±0.25%, and 35±5°C Next, add azoresorcinolsulfonic acid DMF solution dropwise over 4 to 5 hours. After the dropwise addition, at 35±5° C., a constant temperature reaction was carried out for 248 hours, and the synthesis reaction was completed.
Embodiment 3
[0044] Raw materials and ratio:
[0045] Azoresorcinolsulfonic acid 50.0 g
[0046] 4,4’-Diphenylmethane diisocyanate 59.0 g
[0047] N,N-Dimethylformamide 2071.0 g
[0048] Preparation Process:
[0049] Firstly, azoresorcinolsulfonic acid was dissolved in DMF to form a solution with a concentration of 5 ± 0.25% by mass, which was set aside. In pass N 2 Under certain conditions, add 4,4'-diphenylmethane diisocyanate (MDI) and DMF into a four-neck flask, stir and dissolve at 35±5°C to form a solution with a mass percentage concentration of 5±0.25%, and 35±5°C Next, add azoresorcinolsulfonic acid DMF solution dropwise over 4 to 5 hours. After the dropwise addition, at 35±5° C., a constant temperature reaction was carried out for 248 hours, and the synthesis reaction was completed.
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