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Method for preparing formaldehyde scavenging agent

A technology of formaldehyde scavenger and binder, which is applied in the direction of separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of formaldehyde desorption, lower adsorption performance, etc., and achieve increased specific surface area, long action time, and energy consumption. low effect

Inactive Publication Date: 2012-09-12
王志勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the adsorption of formaldehyde by this porous material is mostly pure physical adsorption. When the room temperature is high or the humidity is high, significant formaldehyde desorption will occur, which greatly reduces the adsorption performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of formaldehyde scavenger of the present invention comprises the following steps:

[0030] 1. Prepare raw materials: 500g of sepiolite micropowder with a particle size of 0.5-3mm, 350mL of water, 2.5g of polyvinyl alcohol (it can also be an aqueous solution, provide the concentration and quality of the solution, and convert the mass of pure polyvinyl alcohol to 2.5g) , L-Lysine 50g.

[0031] 2. Mix and stir the sepiolite micropowder and water in step 1 at a temperature of 15-30° C. for 1 hour to form a suspension.

[0032] 3. Add the polyvinyl alcohol in Step 1 to the prepared suspension, and mix and stir for 0.5 h at a temperature of 15-30° C. to form a suspension.

[0033] 4. Add the L-lysine in step 1 to the suspension prepared in step 3, and mix and stir for 0.5 h at a temperature of 15-30° C. to form a suspension.

[0034] 5. Send the suspension prepared in step 4 into a spray dryer, and obtain a dry and fluffy fine powder of porous spheric...

Embodiment 2

[0037] Except following difference, other is with embodiment 1.

[0038] 1. Prepare raw materials: 300g of diatomite micropowder with a particle size of 0.5-3mm, 150mL of water, 1.5g of cyclodextrin, and 10g of aminopropionic acid. 2. Mix and stir for 1.5h. 3. Mix and stir for 2 hours. 4. Mix and stir for 0.5h. 5. The temperature is 80°C.

Embodiment 3

[0040] Except following difference, other is with embodiment 1.

[0041] 1. Prepare raw materials: 1400g of bentonite micropowder with a particle size of 0.5-3mm, 2000mL of water, 28g of soluble starch, 21g of cyclodextrin, 140g of glycine, and 140g of p-aminobenzoic acid. 2. Mix and stir for 3 hours. 3. Mix and stir for 2 hours. 4. Mix and stir for 1 hour. 5. The temperature is 100°C.

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Abstract

The invention relates to a method for preparing a formaldehyde scavenging agent. The method comprises the following steps of: preparing raw materials such as natural mineral micro powder, water, a binder and amino acid in a mass ratio of 100:(50-1,000):(0.5-5):(1-20), wherein the particle size of the natural mineral micro powder is 0.3 to 5mm; mixing and stirring the natural mineral micro powder and the water at the temperature of between 15 and 30 DEG C for 1 to 3 hours to form suspension; adding the binder, and mixing and stirring at the temperature of between 15 and 30 DEG C for 0.5 to 2 hours to form suspension; adding the amino acid, and mixing and stirring at the temperature of between 15 and 30 DEG C for 0.5 to 1 hour to form suspension; feeding into a spray dryer, and preparing dry porous spherical particle fine powder at the temperature of between 80 and 250 DEG C; and putting the fine powder into a packaging bag, and sealing. The raw materials are cheap and readily available, efficiency is high, energy consumption is low, and the prepared formaldehyde scavenging agent is high in adsorption capacity and long in action time.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a preparation method of a formaldehyde scavenger. Background technique [0002] With the improvement of people's living standards and the continuous improvement of interior decoration technology, a large number of decoration materials are widely used in public places such as living rooms, offices, supermarkets, and automobile interiors. Adhesives such as urea-formaldehyde resins are widely used in these upholstered furniture materials. Due to the difficulty of quality control in the production process, as well as the aging decomposition that occurs during long-term use, the resin adhesive will slowly release free formaldehyde, which diffuses into the public and private environments where people are active. In addition, some chemical fiber clothing and packaging materials that people are widely exposed to in daily life also contain different amounts of free formaldehyde....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01D53/02
Inventor 王志勇
Owner 王志勇
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