Non-woven fabric wet wipe grafted with acrylamide and organic silicon biquaternary ammonium salt and preparation method of non-woven fabric wet wipe
A technology of double quaternary ammonium salt and acrylamide, which is applied in the direction of medical preparations containing active ingredients, pharmaceutical formulas, cosmetic preparations, etc., can solve the problems of further improvement, irritation, poor smoothness, etc., to avoid resistance Produces medicinal properties, excellent softness and smoothness, and safe for the human body
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preparation example 1
[0046] 1) Introduce dry hydrogen chloride gas into anhydrous ether solution of octadecyl dimethyl tertiary amine to produce white precipitate. Then use water as the solvent, put epichlorohydrin in the dropping funnel, start to drop slowly, drop it in 35 minutes, stir evenly at room temperature, react at 80°C for 12h, and measure the content of epichlorohydrin quaternary ammonium salt by titration Determine the end point of the reaction. After the reaction is complete, remove the solvent by rotary evaporation at room temperature to obtain a light yellow paste residue, recrystallize the paste residue with acetone, and filter under reduced pressure after the crystals are precipitated. Repeat this several times to finally obtain a white powder. Monoquaternary ammonium salt product - intermediate product N-(3-chloro-2-hydroxypropyl)-N,N-dimethyloctadecyl ammonium chloride. Wherein, the mol ratio of octadecyl dimethyl tertiary amine: hydrogen chloride: epichlorohydrin is 1.5: 1.2: 1...
preparation example 2
[0055] The same as Preparation Example 1, the only difference is that in the 1) step, anhydrous diethyl ether solution of dodecyldimethyl tertiary amine is used to finally obtain organosilicon bisquaternary ammonium salt B.
[0056]
Embodiment 1
[0058] The preparation method of the wet wipe body is as follows:
[0059] (1) Using bamboo pulp fibers with a length of 45 mm and a diameter of 0.07 mm as raw materials, a bamboo pulp non-woven fabric is obtained after cross-lapping and spunlace technology, and a non-woven fabric carrier with a thickness of 4 mm is obtained after cutting and high-temperature sterilization ;
[0060] (2) Place the non-woven fabric carrier prepared in step (1) in the monomer solution prepared by 1L isopropanol / water mixed solvent, and soak for 18 hours in the dark at room temperature, wherein the monomer is organosilicon diquaternary ammonium salt A and acrylamide, the mass fraction of organic silicon bisquaternary ammonium salt A in the solution is 0.2%, and the molar ratio of organic silicon bisquaternary ammonium salt A to acrylamide is 15:1, and the volume ratio of isopropanol to water is 3 : 1;
[0061] (3) Under nitrogen protection, add CeCl to the monomer solution 3 / HCl aqueous solut...
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