Blocking absorbent of formaldehyde and its preparing process and application

Abstract

A formaldehyde absorbent in sealed condition is prepared from chitosan, acetic acid and water. It can be used by spraying it on the surface of furniture or floor to absorb the formaldehyde released by them, or by preparing its solid and arranging the solid in furniture. Its advantages are high effect, no toxicity, and high resistance to high temp and rubbing.

Description

technical field [0001] The invention relates to a preparation for absorbing formaldehyde, in particular to a preparation for sealing and absorbing free formaldehyde released by interior decoration materials or fabrics, a preparation method and a use method thereof. Background technique [0002] With the continuous improvement of people's living standards, interior decoration is also more and more exquisite. While people are enjoying a better life, the pollution of the indoor environment has become an urgent problem to be solved. At present, the chemical substances released by interior decoration materials are the main pollution source of indoor environment. Among the chemicals in these polluted rooms, formaldehyde is the most harmful to the human body. [0003] Formaldehyde is highly irritating to the upper respiratory tract, eyes, mucous membranes and skin of the human body. Long-term exposure to formaldehyde gas may cause symptoms such as dizziness, ...

AI Technical Summary

Problems solved by technology

[0009] 1. Some products directly penetrate into the paint with the paint as the matrix, causing a chemical reaction with the ingredients in the paint, which reduces the use efficiency;

[0010] 2. Some products are water-soluble and not resistant to scrubbing;

[0011] 3. Some products can only be used before painting to facilitate the penetration of the agent into the board, but this may destroy the dissociation balance of the formaldehyde polymer and reduce the strength of the board;

[0012] 4. Some products have color, which will affect the color of furniture, decoration materials or fabrics after use;

[0013] 5. Some products react with formaldehyde to generate other organic volatiles, causing secondary pollution;

[0014] 6. The actual absorption effect of some products is not good

[0015] At the same time, no one has applied for a related patent that specifically absorbs formaldehyde