Novel uvioresistant fiber and preparation method thereof
An anti-ultraviolet and fiber technology, which is applied in the direction of artificial filaments made of cellulose derivatives, can solve the problems of weak human body protection, poor long-lasting anti-ultraviolet effect, insufficient anti-ultraviolet performance, etc., and achieve outstanding anti-ultraviolet performance , Excellent anti-ultraviolet absorption performance, excellent antibacterial effect
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Embodiment 1
[0040] Step (1) Add 1mol apigenin (A), 2.4mol ethanolamine (B), and 2.4mol paraformaldehyde into 50mol dimethyl sulfoxide, heat to 110°C and stir for 4h, let stand, distill under reduced pressure, and distill the concentrate Dissolve in ethyl acetate, after cooling, add 1N sodium hydroxide aqueous solution to wash 3 times, deionized water wash 3 times, stand for layering, separate liquids, take the organic phase and dry it with anhydrous sodium sulfate, filter, and rotary evaporate , dried in vacuo to give intermediate product I (IR: 3440cm -1 : -OH exists; 1630cm -1 :-C=C-exists; 1580cm -1 、1470cm-1 、1440cm -1 : benzene ring exists; 1148cm -1 :-C-N-generate).
[0041] Step (2) Add 1mol I, 2.4mol 2,4-dihydroxybenzophenone (C), and 2.4mol paraformaldehyde into 50mol dimethyl sulfoxide, heat to 110°C, stir vigorously for 8h, and let stand. Distill under reduced pressure, dissolve the concentrate in ethyl acetate, after cooling, add 1N sodium hydroxide aqueous solution to wa...
specific Embodiment 2-6
[0046] Specific embodiment 2-6, other are with specific embodiment 1, difference is following table:
[0047]
[0048]
[0049] Using the anti-ultraviolet cellulose obtained in Example 1 as the basic material of the application example, it was made into anti-ultraviolet cotton fiber.
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