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Tea extract gel composition with formaldehyde discoloration performance

A technology of tea extract and gel composition, which is applied in the field of daily chemicals, can solve the problems of formaldehyde purification gel with peculiar smell, poor indication sensitivity, and low formaldehyde concentration, achieve a friendly and safe home environment, and solve poor sensitivity , formaldehyde color sensitive effect

Pending Publication Date: 2022-07-29
上海时宜品牌管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unique amine odor of alcohol amine compounds will also bring inconvenience to the indoor environment
[0005] Therefore, there are at least the following technical problems in the above-mentioned prior art: in the prior art, the formaldehyde purification gel has a peculiar smell, and the indication sensitivity is poor, and it is difficult to change color when the formaldehyde concentration is low

Method used

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  • Tea extract gel composition with formaldehyde discoloration performance
  • Tea extract gel composition with formaldehyde discoloration performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A tea extract gel composition with formaldehyde discoloration property, comprising the following components: 5% mass fraction of tea extract (commercial product, catechin content 50%), 10% mass fraction of polypropylene Amide (molecular weight is 10 million) and 85% mass fraction of water.

[0034] The preparation method is as follows: firstly, the polyacrylamide is pre-dissolved in water at 50° C., stirred until clear, then the tea extract is added and mixed, and the gel composition is obtained by stirring uniformly.

[0035] The gel composition was placed in the air detection chamber, and under the condition that the formaldehyde concentration was 10 mg / L, the color of the gel composition changed from colorless to orange after 24 hours (see appendix). figure 2 Left), and achieved obvious formaldehyde discoloration effect. Using a rotational viscometer to measure the viscosity of the gel composition system, the viscosity value increased from the initial value of 51 (...

Embodiment 2

[0038]A tea extract gel composition with formaldehyde discoloration property, comprising the following components: 1% mass fraction of tea extract (commercial product, catechin content 50%), 20% mass fraction of polypropylene Amide (molecular weight 5 million) and 79% water by mass.

[0039] The preparation method is as follows: firstly, the polyacrylamide is pre-dissolved in water at 90° C., stirred until clear, then the tea extract is added and mixed, and the gel composition is obtained by stirring uniformly.

[0040] The gel composition was placed in an air detection chamber, and under the condition that the formaldehyde concentration was 10 mg / L, the color of the gel composition changed from colorless to light yellow after 24 hr, achieving an obvious formaldehyde discoloration effect.

[0041] The viscosity of the gel composition system was measured with a rotational viscometer, and the viscosity value increased from the initial value of 310 (mPa·s) to 2170 (mPa·s) after t...

Embodiment 3

[0043] A tea extract gel composition with formaldehyde discoloration performance, comprising the following components: 10% mass fraction of tea extract (commercial product, catechin content 10%), 1% mass fraction of polypropylene Amide (molecular weight 25 million) and 89% water by mass.

[0044] The preparation method is as follows: firstly, the polyacrylamide is pre-dissolved in water at 20° C., stirred until clear, then the tea extract is added and mixed, and the gel composition is obtained by stirring uniformly.

[0045] The gel composition was placed in an air detection chamber, and under the condition of a formaldehyde concentration of 10 mg / L, the color of the gel composition changed from light yellow to brown after 24 hr, achieving an obvious formaldehyde discoloration effect.

[0046] Using a rotational viscometer to measure the viscosity of the gel composition system, the viscosity value increased from the initial value of 32 (mPa·s) to 870 (mPa·s) after the discolor...

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Abstract

The invention discloses a tea extract gel composition with formaldehyde discoloring performance. The tea extract gel composition is prepared from the following components in percentage by mass: 1 to 10 percent of tea extract, 1 to 20 percent of polyacrylamide and the balance of water. Wherein various assistants can also be added. The tea extract gel composition disclosed by the invention can react with formaldehyde and generate obvious color change, so that the tea extract gel composition can be used for absorbing and indicating formaldehyde pollutants.

Description

technical field [0001] The invention belongs to the field of daily chemicals, in particular to a tea extract gel composition with formaldehyde discoloration performance. Background technique [0002] Hydrogel is a kind of extremely hydrophilic three-dimensional network structure, which swells rapidly in water. Due to the existence of cross-linked network, hydrogel can swell and retain a large amount of water. The amount of water absorbed is closely related to the degree of cross-linking. , the water content in the hydrogel can be as low as a few percent or as high as 99 percent. The aggregated state of the gel is neither a complete solid nor a complete liquid, and can maintain a certain shape and volume under certain conditions, and the solute can diffuse or penetrate from the hydrogel. Hydrogels composed of natural substances are being used more and more widely due to their better biocompatibility, environmental sensitivity, abundant sources, and low prices. [0003] In r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/72
CPCB01D53/78B01D53/72B01D2257/70
Inventor 白剑芸贲倩岑李峰田晶周磊
Owner 上海时宜品牌管理有限公司
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