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High-efficiency formaldehyde scavenging agent

A formaldehyde scavenger and formaldehyde removal technology are applied to the separation of dispersed particles, chemical instruments and methods, separation methods, etc., which can solve problems such as complex manufacturing equipment and processes, short product storage periods, and secondary pollution in the living room. And the effect of simple production process, good environmental friendliness, convenient and simple use

Inactive Publication Date: 2008-05-21
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, some formaldehyde scavengers have appeared, but some react slowly with formaldehyde, have low scavenging efficiency, and have no obvious effect; some have good scavenging effects, such as low-level amines, but they have certain toxicity. It is easy to pollute the environment and cause secondary pollution to the living room; some formaldehyde scavengers have a short action time and are helpless to the formaldehyde that appears after using the agent; some formaldehyde scavengers have complicated manufacturing equipment and processes, and the production cost is high; The product stability of formaldehyde scavenger is not good, the product storage period is short, and the product is easy to fail

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In an enamel container with a stirrer, add 15% of carbohydrazide, 0.1% of stabilizer, 1.9% of n-dodecylamine hydrochloride, and 83% of water in sequence, stir at room temperature for 40 minutes, and adjust the pH value after mixing evenly. The value was adjusted to 9, then filtered with a 100-mesh sieve, and the filtrate was used for the test. The results showed that the formaldehyde removal rate was 90% in 30 minutes and 97% in 60 minutes.

Embodiment 2

[0029] In a stainless steel container with a stirrer, add 12% ethyl carbazate, 0.1% stabilizer, 8% polyacrylate, 1.9% n-dodecylamine hydrochloride, and 78% water in sequence, and stir at room temperature After 40min, the pH value was adjusted to 9 after mixing evenly, and then filtered through a 100-mesh sieve, and the filtrate was used for the test.

Embodiment 3

[0031] In a stainless steel container with a stirrer, 14% of ethyl carbazate, 0.7% of stabilizer, 8% of polyacrylate, 1.3% of sodium dodecylbenzene sulfonate, 76% of water were added in sequence, and stirred at room temperature. After 30min, the pH value was adjusted to 8.5 after mixing evenly, and then filtered with a 100-mesh sieve, and the filtrate was used for the test.

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PUM

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Abstract

The invention discloses a high effect formaldehyde dispelling agent. The formaldehyde dispelling agent of the invention comprises formaldehyde dispelling factors, a stabilizing agent, a synergistic agent, surfactants and water, etc. The product is nonpoisonous and tasteless, safe and environmental friendly, which can quickly and thoroughly dispel free formaldehyde in air, waste water and various boards and furniture, and a dense protecting film is formed on the surface of solid, working for a long time. The method of the invention is characterized by simple production technique and devices, no three wastes pollution and low production cost.

Description

technical field [0001] The invention relates to a high-efficiency formaldehyde scavenger, which belongs to the field of chemical industry and is used for the removal of free formaldehyde in various types of boards and furniture. Background technique [0002] Interior decoration requires a large number of artificial boards, and the production of these artificial boards requires urea-formaldehyde resin with formaldehyde as the main component as a binder. Because urea-formaldehyde resin is unstable, the formaldehyde in it will be continuously released from the decorative materials, which will seriously pollute the indoor air. . The survey shows that the formaldehyde concentration of newly renovated houses generally exceeds the standard, and some are more than 40 times. A large number of studies have shown that low-dose formaldehyde can cause respiratory diseases, menstrual disorders in women, reduced physical fitness in newborns, and chromosomal abnormalities. High concentrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/72
Inventor 杨利张建国张同来乔小晶
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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