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Formaldehyde remover, and preparation method and application thereof

The technology of a formaldehyde remover and chitin derivatives, which is applied in the field of formaldehyde remover and its preparation, can solve the problems of incomplete air purification, easy rebound release of formaldehyde, unstable substances, etc., and achieves stable properties, simple preparation methods, and easy reaction. full effect

Inactive Publication Date: 2017-05-24
广东迪美生物技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can quickly remove free formaldehyde in the air or inside the furniture. However, since its raw materials generally include chemical reagents such as ammonia water, chlorine dioxide, and sodium sulfite, it will cause secondary pollution in the room, and the generated substances are unstable and easy to rebound. Formaldehyde is released, which does not purify the indoor air thoroughly

Method used

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  • Formaldehyde remover, and preparation method and application thereof
  • Formaldehyde remover, and preparation method and application thereof
  • Formaldehyde remover, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1) Weigh 80kg deionized water, 1kg lactic acid, 2kg chitin and 1kg tea polyphenols respectively;

[0036] 2) Add 1kg of lactic acid to 50kg of deionized water and stir evenly to obtain a weak acid solution;

[0037] 3) Add 2kg of chitin (degree of deacetylation greater than or equal to 90%) to the weak acid solution of step 1), stir at 60°C until it is completely dissolved, and cool to room temperature to obtain a chitin derivative solution;

[0038] 4) Add 1 kg of tea polyphenols to 30 kg of deionized water, stir at room temperature until completely dissolved, to obtain a tea extract solution;

[0039] 5) The chitin derivative solution of step 3) and the tea extract solution of step 4) are mixed, stirred evenly to obtain a formaldehyde remover, and sealed and stored.

Embodiment 2

[0041] 1) Weigh 90kg of deionized water, 5kg of acetic acid, 10kg of graft-modified chitin, 1kg of theaflavin, 2kg of tea polysaccharide and 2kg of tea saponin;

[0042] 2) Add 5kg of acetic acid to 60kg of deionized water and stir evenly to obtain a weak acid solution;

[0043] 3) Add 10 kg of graft-modified chitin (biguanidyl-modified chitin) to the weak acid solution of step 1), stir at 60°C until it is completely dissolved, and cool to room temperature to obtain a chitin derivative solution;

[0044] 4) Add 1kg of theaflavins, 2kg of tea polysaccharides and 2kg of tea saponin to 30kg of deionized water, stir at room temperature until completely dissolved, to obtain a tea extract solution;

[0045] 5) The chitin derivative solution of step 3) and the tea extract solution of step 4) are mixed, stirred evenly to obtain a formaldehyde remover, and sealed and stored.

Embodiment 3

[0046] Example 3: Formaldehyde remover and formaldehyde reaction experiment (indoor temperature 25℃)

[0047] 1. Add 20 mL of the formaldehyde remover prepared in Examples 1 and 2 into a 50 mL beaker;

[0048] 2. Slowly drop 2 mL of 36% formaldehyde solution into the beaker of formaldehyde remover;

[0049] 3. Stir the mixture in the beaker evenly and let it stand for 15 minutes;

[0050] 4. The solution in the beaker formed a three-dimensional gel;

[0051] 5. The reason for the formation of jelly is that the amino group on the side chain of the chitin derivative in the formaldehyde remover has a cross-linking reaction with formaldehyde. The linear polymer is cross-linked and called a bulk polymer compound, and the bulk polymer compound does not dissolve It has strong properties, strong rigidity, and poor fluidity. After long-term observation, it has strong stability and will no longer degrade and rebound to release formaldehyde.

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Abstract

The invention discloses a formaldehyde remover, and a preparation method and application thereof. The formaldehyde remover is prepared from the following raw materials in parts by weight: 80 to 90 parts of water, 1 to 5 parts of weak acids compound, 2 to 10 parts of chitin derivatives and 1 to 5 parts of tealeaves extract. A molecular side chain of the chitin derivative in the formaldehyde remover has a great number of amino groups, under a weak acid condition, the amino groups can trap the formaldehyde to have a nucleophilic addition reaction, the reaction is complete and efficient, the generated compound is non-toxic and harmless, stable in performance and free from releasing the formaldehyde, and by virtue of experimental test, the removal rate for the formaldehyde in the air reaches 90 percent or higher. In addition, main raw materials used in the preparation method are chitin derivatives and tealeaves extract and are completely non-toxic and harmless to the human body and free from producing secondary pollution to the indoor air; and moreover, the preparation method is simple, the reaction condition is moderate, and the formaldehyde remover can rapidly react with the formaldehyde under the conditions of normal pressure and 20 to 35 DEG C.

Description

[0001] Technical field: [0002] The invention belongs to the field of formaldehyde adsorption, and specifically relates to a formaldehyde remover and a preparation method and application thereof. [0003] Background technique: [0004] With the improvement of people's quality of life, purchase of new furniture and decorations appear more and more frequently in real life. A large number of artificial boards are used in decoration and furniture, such as plywood, fine wood, medium-density fiberboard and particleboard, and most of these artificial boards use formaldehyde-based adhesives, mainly phenolic resin and urea-formaldehyde Resin adhesives have long-term formaldehyde release problems, which have become a source of formaldehyde pollution in indoor air. In addition, although the formaldehyde emission of these wood-based panels will slowly decrease within a certain period of time, the release period is relatively long, as long as 3-15 years. Some other decorative materials other t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/72C09D7/12
CPCB01D53/90B01D53/8668B01D2251/00B01D2255/70B01D2257/708B01D2258/06C09D7/63C09D7/65
Inventor 林家洪陈娟刘永龙陶宏兵杨娟黄泽彬林万泉黄小茉邱晓颖施庆珊
Owner 广东迪美生物技术有限公司
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