A kind of preparation method of skin-friendly liquid absorbent material

A liquid-absorbing material and skin-friendly technology, which is applied in the field of preparation of skin-friendly liquid-absorbing materials, can solve the problems of low water-absorbing capacity, large amount of use, and inconvenience, etc., and achieves improving liquid-absorbing capacity, avoiding bursting, and high The effect of liquid absorption

Active Publication Date: 2021-05-11
杭州千芝雅卫生用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low water absorption capacity, high usage, no pressure resistance, very inconvenient

Method used

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  • A kind of preparation method of skin-friendly liquid absorbent material
  • A kind of preparation method of skin-friendly liquid absorbent material
  • A kind of preparation method of skin-friendly liquid absorbent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1: A kind of skin-friendly liquid-absorbing material formula:

[0076] The present embodiment provides a skin-friendly liquid-absorbing material, and its preparation steps are as follows:

[0077]1) Modification: 20g β-cyclodextrin was dissolved in 200mL N,N-dimethylamide and 200mL anhydrous dimethyl sulfoxide mixture, 4g NaOH solid was added to the mixture, the temperature was lowered to 1°C after stirring, and 16mL bromine was added. After cyclopropane, the reaction was stirred at a speed of 160 r / min for 36 h, and the reaction was allowed to stand for 24 h. The NaOH solid was filtered off and dried to obtain the modified β-cyclodextrin;

[0078] 2) Dissolution: under nitrogen protection, the modified β-cyclodextrin described in step 1) and those with different D S The cyclodextrin mixture of HP-β-CD was dissolved in a large amount of dilute NaOH solution, cyclohexane was added, the temperature was raised to 45 °C and stirred;

[0079] 3) Pre-crosslinki...

Embodiment 2

[0097] Example 2: Another skin-friendly liquid-absorbing material formulation:

[0098] This example provides another skin-friendly liquid-absorbing material, and its formula, preparation method and restriction conditions are basically the same as those in Example 1, the difference is that there is no modification in step 1) in this example, and ordinary β- Cyclodextrin replaces the modified β-cyclodextrin in step 2); and the skin-friendly liquid-absorbing material is prepared according to the subsequent steps.

Embodiment 3

[0099] Example 3: Another skin-friendly liquid-absorbing material formulation:

[0100] This example provides another skin-friendly liquid-absorbing material, and its formula, preparation method and restrictions are basically the same as those in Example 1, the difference is that in step 2) of this example, the cyclodextrin mixture contains 40.77 g Step 1) The modified β-cyclodextrin and 122.31gD S = 4.44 HP-β-CD, i.e. HP-β-CD is all D S = 4.44 HP-β-CD; and the skin-friendly liquid-absorbing material was prepared according to the subsequent steps.

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Abstract

The present invention relates to a liquid-absorbing material, in particular to a method for preparing a skin-friendly liquid-absorbing material. The preparation method comprises the following steps: 1) modifying β-cyclodextrin by introducing a double bond; 2) modifying β-cyclodextrin and hydroxypropyl-β-cyclodextrin with different Ds are dissolved in lye; 3) adding monomer and initiator to the mixed solution in step 2) for pre-crosslinking; 4) increasing drop by drop Add the sodium alginate solution dropwise to the reaction solution in step 3) to continue cross-linking; 5) keep it warm and dry it. The skin-friendly liquid-absorbent material prepared according to the method of the present invention is friendly to the skin, does not irritate the skin, does not cause adhesion after contact with the skin, does not cause inflammation, has relatively excellent liquid-absorbent performance, and has satisfactory Mechanical effect, its degradability is excellent, and it is friendly to the environment.

Description

technical field [0001] The present invention relates to a liquid-absorbing material, in particular to a preparation method of a skin-friendly liquid-absorbing material Background technique [0002] Superabsorbent material is a new type of polymer material developed after the 1960s. It has a three-dimensional network structure and good water absorption, water retention and biocompatibility. It is widely used in biology, medicine, cosmetics and agriculture. [0003] In the 1950s, the American Goodrich Company developed cross-linked polyacrylic acid, a typical superabsorbent material that was used as a tackifier at that time. At the same time, Flory Paul Join, who won the Nobel Prize in Chemistry in 1974 and was then a professor of chemistry at Cornell University, established the theory of water absorption of polymer gels, also known as Flory, through a large number of experimental studies. The theory of water absorption has laid a theoretical foundation for the development of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/28A61K8/73A61K8/02C08F251/00C08F220/06C08F220/56C08F222/38C08J3/24C08L5/16C08L5/04C08L89/00
CPCA61K8/0212A61K8/733A61K8/738A61L15/28C08F251/00C08J3/246C08J2305/16C08J2405/04C08J2489/00C08F220/06C08F220/56C08F222/385
Inventor 吴跃
Owner 杭州千芝雅卫生用品有限公司
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