Decoration formaldehyde scavenger

Abstract

The invention provides a decoration formaldehyde scavenger, and belongs to the field of formaldehyde removal after interior decoration. An existing formaldehyde removal reagent and method cannot effectively solve air pollution problems such as formaldehyde caused by decoration. The formaldehyde scavenger comprises a CS / AC catalyst and an active methylene compound. The principle of formaldehyde removal is that CS / AC catalysis aidehydes materials and the active methylene compound are subjected to Knoevenagel condensation reaction; and the mass ratio of the active methylene compound to CS / AC is 1to (1 to 5). The formaldehyde removal reaction process is complete, and the performance of formaldehyde removal is high. The decoration formaldehyde scavenger is applicable to all types of furnitureand has a wide application range.

Description

technical field [0001] The invention relates to a formaldehyde scavenger for decoration. Background technique [0002] Formaldehyde, a colorless and irritating gas, chemical formula HCHO, molecular weight 30.00, also known as formaldehyde. Colorless, irritating to human eyes and nose. The relative density of gas is 1.067 (air=1), and the density of liquid is 0.815g / cm³ (-20°C). Melting point -92°C, boiling point -19.5°C. Soluble in water and ethanol. On October 27, 2017, in the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization, formaldehyde was placed in the list of first-class carcinogens. [1] On July 23, 2019, formaldehyde was included in the list of toxic and harmful water pollutants. [0003] The main use of formaldehyde is to produce urea-formaldehyde resin and phenolic resin. The urea-formaldehyde resin is produced by mixing formaldehyde and urea in a certain molar ratio, and the phenolic resin is pro...

AI Technical Summary

Problems solved by technology

Disadvantages: Uneven areas cannot be sealed; physical blockage cannot remove formaldehyde; membrane is easily damaged, and secondary pollution is more serious

[0012] Disadvantages: In the typical environment of indoor formaldehyde treatment, this type of oxidation reaction cannot oxidize formaldehyde into harmless substances such as carbon dioxide and water as claimed by commercially available products, but can only be oxidized to formic acid, which has both acid and aldehyde It has a pungent smell, and it will cause blisters, redness and swelling after skin contact, and formic acid, as a medium-strong acid, is highly corrosive and will cause great damage to furniture itself, especially metal products.

[0015] Disadvantages: Some advantages over other nucleophilic reaction methods for removing aldehydes can be added, mainly from the perspective of safety and reaction level. Solvent-free conditions are a very important advantage, because formaldehyde mainly exists in the depth of the plate and will diffuse for a long time. Even with the help of water and penetrating agent, the amount of the product that can penetrate deep is very small, and the reaction conditions are difficult to meet the suitable conditions required by other products

[0018] Disadvantages: This method is only effective for free formaldehyde in the air, and does not work for formaldehyde deep in the furniture or in a combined state, and this method requires strong ultraviolet catalysis to be realized, and it is difficult to achieve the conditions in the room or car

The third category: biological enzymes, dissolving enzymes, and plant extracts. Disadvantages: This type of aldehyde remover has many names and different raw materials, but the actual effect is mostly unsatisfactory. The principle of aldehyde removal is based on the above-mentioned content, and the biggest difference is Add some fragrance substances, etc.

Most of the product chain's own components and specific action principles are not clearly described, and the effect of effective control of formaldehyde hazards cannot be predicted and verified.

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