Formaldehyde scavenger, as well as preparation method and applications thereof

Abstract

The invention discloses a formaldehyde scavenger, which comprises main ingredients: a reactant containing chitosan and vegetable tannin, as well as a penetrant, a surfactant, a pH regulator and a solvent. The preparation method of the formaldehyde scavenger comprises the following steps: heating the solvent, firstly adding chitosan, penetrant, surfactant and pH regulator into the solvent, stirring and dissolving, after the dissolving is thorough, then adding vegetable tannin, stirring and dissolving, after the dissolving is thorough, filtering and filling. The formaldehyde scavenger is especially suitable for removal of formaldehyde in fur products. Aiming at the texture and structure characteristics of fur, the selected reagent is concretely designed, and comes from natural animal and plant ingredients, thus being good in safety, incapable of causing harm to a user and clothes, and meeting the related laws and regulations and the quality standard of international and domestic fur clothes. The formaldehyde scavenger can be used for treating fur of fur processing industry, and can also meet the demand on removing formaldehyde of a common consumer on the fur products.

Description

technical field [0001] The invention relates to a formaldehyde scavenger and its preparation method and application. Background technique [0002] Fur clothing has always been a symbol of luxury and wealth. No matter in ancient times or now, they are the darlings of famous ladies and nobles. However, with the development of the times and the improvement of people's living standards, fur clothing has become a daily consumer product for ordinary families, and fur products such as toys and accessories have entered thousands of households. [0003] Tanning is a processing method for animal fur. Specifically, after the raw hide is dried, the cortex is stiff, easy to mildew, has a bad smell, is not easy to preserve, and is not beautiful. Therefore, it must be processed before it can be used, so tanning The purpose of fur is to make the fur cortex soft and fix protein, not absorb moisture and rot, and be durable. Formaldehyde is a tanning agent used in a large amount. Aldehyde t...

AI Technical Summary

Problems solved by technology

The reagents and reaction conditions used in the above patents will cause damage to fur collagen fibers, so they cannot be used for the treatment of residual formaldehyde in fur clothing.

[0009] Regarding the removal of formaldehyde in textiles, Chinese patent CN200610102146.2 uses a hydrazide compound as a reactant to remove formaldehyde. This type of compound is an azo compound, which is extremely toxic and cannot be used in daily consumer goods such as clothing.

Chinese patent CN200910069730.6 uses hydrogen peroxide to remove formaldehyde under strong alkaline conditions in the fur tanning process. Hydrogen peroxide will damage the keratin protein of the fur, making the fur dull and brittle, and the strong alkali will cause the hair to fall off. These reagents are all It can cause serious damage to the fur. At the same time, strong oxides such as hydrogen peroxide will seriously affect the coloring of the fur, causing the dye to fade and fall off.

At present, there are no suitable relevant patents and literature reports on the treatment of residual formaldehyde in fur products, so it is urgent to invent a safe formaldehyde scavenger suitable for fur to fill the gap in the prior art