Preparation method of grafting modified beta-cyclodextrin aromatic finishing agent

An aromatic finishing agent and graft modification technology, which is applied in fiber treatment, textiles and papermaking, plant fiber, etc., can solve the problem of short fragrance retention time of β-cyclodextrin aromatic finishing agent and lack of β-cyclodextrin and fabrics. Reactivity and other issues, to achieve good fragrance effect, enhance the effect of water solubility

Active Publication Date: 2014-10-29
SHAANXI UNIV OF SCI & TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of a grafted modified β-cyclodextrin aromatic finishing agent, which solves the problems of no reactivity between β-cyclodextrin and fabrics and short fragrance retention time of the β-cyclodextrin aromatic finishing agent. question

Method used

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  • Preparation method of grafting modified beta-cyclodextrin aromatic finishing agent

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preparation example Construction

[0021] A kind of preparation method of graft modified β-cyclodextrin fragrance finishing agent of the present invention, specifically comprises the following steps:

[0022] Step 1: Add β-cyclodextrin, acrylic acid and distilled water into the reactor according to the mass ratio of 1:0.2~1.4:4, mix evenly at 40~80℃, and then add dropwise at a concentration of 0.010mol within 20~30min / L~0.030mol / L potassium persulfate aqueous solution, the mass ratio of potassium persulfate to β-cyclodextrin is 1:20~40; after the dropwise addition, keep it warm for 40~150min, and purify the obtained product with absolute ethanol , after the precipitate is filtered, it is fully washed with acetone and dried in a vacuum oven at 45-50°C for 24-48 hours to obtain a β-cyclodextrin-g-polyacrylic acid graft polymer with a grafting rate of 7.301%-15.601%. ;

[0023] Step 2: Add the β-cyclodextrin-g-polyacrylic acid graft polymer obtained in step 1 and distilled water into the reactor according to the...

Embodiment 1

[0028] Add β-cyclodextrin, acrylic acid and distilled water in a mass ratio of 1:0.8:4 into a three-necked flask equipped with a stirrer, a condenser, and a feeding device, heat up to 40°C and mix evenly, and add dropwise within 30 minutes The concentration of potassium persulfate aqueous solution is 0.025mol / L, the mass ratio of potassium persulfate to β-cyclodextrin is 1:20, after the potassium persulfate aqueous solution is added dropwise, keep warm for 120min. After the reaction, precipitate and purify 3 times with absolute ethanol, then wash the precipitate fully with acetone, and dry the product in a vacuum oven at 50°C for 24 hours to obtain β-cyclodextrin-g-polyethylene with a grafting rate of 15.601%. Acrylic graft polymer;

[0029] Add the β-cyclodextrin-g-polyacrylic acid graft polymer and distilled water obtained in step 1 into a three-necked flask equipped with a stirrer, a condenser, and a feeding device according to a mass ratio of 1:11, dissolve at 50°C, and th...

Embodiment 2

[0031] Add β-cyclodextrin, acrylic acid and distilled water in a mass ratio of 1:0.8:4 into a three-necked flask equipped with a stirrer, a condenser, and a feeding device, heat up to 60°C and mix evenly, and add dropwise within 30 minutes The potassium persulfate aqueous solution with a concentration of 0.025mol / L was added, and the mass ratio of potassium persulfate to β-cyclodextrin was 1:20. After the potassium persulfate aqueous solution was added dropwise, the reaction was incubated for 40 minutes. After the reaction, precipitate and purify with absolute ethanol three times, then wash the precipitate fully with acetone, and dry the product in a vacuum oven at 45°C for 48 hours to obtain β-cyclodextrin-g-polyethylene with a grafting rate of 14.597%. Acrylic graft polymer;

[0032]Add the β-cyclodextrin-g-polyacrylic acid graft polymer and distilled water obtained in step 1 into a three-necked flask equipped with a stirrer, a condenser, and a feeding device according to a ...

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Abstract

The invention discloses a preparation method of a grafting modified beta-cyclodextrin aromatic finishing agent. The preparation method comprises the following steps: first, using acrylic acid to carry out grafting modification on beta-cyclodextrin so as to obtain a beta-cyclodextrin-g-polyacrylic acid graft polymer, and then adding an essence solution into the beta-cyclodextrin-g-polyacrylic acid graft polymer solution to carry out reactions so as to obtain the grafting modified beta-cyclodextrin aromatic finishing agent. In the preparation method, the acrylic acid is grafted on beta-cyclodextrin to modify the beta-cyclodextrin, the modified beta-cyclodextrin comprises polycarboxylic acids which can carry out esterification reactions with the hydroxyl groups in the cellulose of fabrics, thus the cyclodextrin is crosslinked with the cellulose, so the shortage that essence cannot stay too long on fabrics is solved, a sustain-releasing effect is achieved, the problems that beta-cyclodextrin cannot carry out reactions with fabrics and the fragrance staying time of beta-cyclodextrin aromatic finishing agent is short are solved, and a better fragrance-lasting effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of preparation of dyeing and finishing auxiliaries, and in particular relates to a preparation method of a grafted modified β-cyclodextrin aroma finishing agent. Background technique [0002] In recent years, with the advancement of science and the improvement of people's living standards, more and more people began to advocate a natural and healthy lifestyle, people paid more attention to health, and reports on cyclodextrins gradually increased. Many aromatics have sedative, bactericidal, therapeutic and health care effects. There is a special aromalogy abroad to use a strict scientific method to study and explain the relationship between aroma and psychology. [0003] The early aroma finishing mainly adopts the method of adsorption, that is, putting textiles and scented plants together to make the aroma volatilize and penetrate into the pores of the fibers, or directly impregnate with a solution containin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M23/12D06M15/21C08F251/00C08F220/06D06M101/06
Inventor 周建华贺仁妍马建中王海龙褚苗
Owner SHAANXI UNIV OF SCI & TECH
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