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A kind of formaldehyde-removing woodware paint

A wood lacquer and formaldehyde technology, applied in the field of wood lacquer, can solve the problems of complex synthesis, complex process, easy diffusion to the environment, etc.

Active Publication Date: 2021-08-10
佛山市莱威化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, the in-situ phase inversion process is coupled with the resin preparation process to form active titanium with catalytic function, which can be grafted with active functional groups to remove formaldehyde in indoor air and residual formaldehyde in furniture glue, but finally it can be seen that the formaldehyde removal General effect
[0012] CN103173004 discloses a waterborne polyurethane dispersion composition with formaldehyde reactivity, which also mentions that it can be used in the field of woodware. The product of this invention is non-toxic, environmentally friendly, and combines the effects of chemical synthesis and physical mixing to remove formaldehyde , the aldehyde removal effect is longer, but the overall synthesis is more complicated and the cost is higher
[0013] From the above content, it can be found that some current beneficial attempts either use special functional materials, or the aldehyde removal effect is general, or the aldehyde removal agent used is easy to migrate and diffuse into the environment, or the synthesis and preparation routes are long and the process is relatively complex, therefore, there is still a lot of room for improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A formaldehyde-removing wood varnish, the preparation process is as follows: 1) stirring 80 parts by mass of water-based polyurethane dispersion, 2 parts by mass of dipropylene glycol butyl ether, and 0.5 parts by mass of Foamstar A34; 2) then adding 15 parts by mass of water, NP-100 0.5 part by mass, 1 part by mass of RM 825, 0.5 part by mass of BYK430, and stir to obtain.

[0034] Wherein, the preparation method of water-based polyurethane dispersion is as follows:

[0035] 80 parts by mass of polycarbonate diol (number average molecular weight 2000), 70 parts by mass of Desmodur N3300, and 5 parts by mass of epoxy resin were dehydrated under vacuum, mixed and then added with 0.1 part by mass of dibutyltin dilaurate, and the temperature was raised to 75°C and reacted for 2h ; Then add 10 parts by mass of dimethylolpropionic acid, 2 parts by mass of trimethylolpropane and react for 2h at 80; then add 5 parts by mass of 2-amino-2-methyl-1-propanol, malonic acid 10 part...

Embodiment 2

[0037] A formaldehyde-removing wood varnish, the preparation process is as follows: 1) 100 parts by mass of water-based polyurethane dispersion, 5 parts by mass of dipropylene glycol butyl ether, and 1 part by mass of Foamstar A34 are stirred evenly; 2) 10 parts by mass of water, NP-100 5 parts by mass, 1 part by mass of RM 825, and 1 part by mass of BYK430, stir evenly, and then obtain.

[0038] Wherein, the preparation method of water-based polyurethane dispersion is as follows:

[0039] 90 parts by mass of polycarbonate diol (number-average molecular weight 4000), 100 parts by mass of Desmodur N3300, and 15 parts by mass of epoxy resin were dehydrated in vacuum, and after mixing, 0.3 parts by mass of dibutyltin dilaurate was added, and the temperature was raised to 85° C. and reacted for 3 hours. ; Then add 15 parts by mass of dimethylolpropionic acid and 5 parts by mass of trimethylolpropane to react at 90° C. for 2 h; then add 10 parts by mass of 2-amino-2-methyl-1-propan...

Embodiment 3

[0041] A formaldehyde-removing wood varnish, the preparation process is as follows: 1) stirring 90 parts by mass of water-based polyurethane dispersion, 2 parts by mass of dipropylene glycol butyl ether, and 0.5 parts by mass of Foamstar A34; 2) then adding 10 parts by mass of water, NP-100 0.5 part by mass, 1 part by mass of RM 825, 0.5 part by mass of BYK430, and stir to obtain.

[0042] Wherein, the preparation method of water-based polyurethane dispersion is as follows:

[0043] 85 parts by mass of polycarbonate diol (number-average molecular weight 3000), 85 parts by mass of Desmodur N3300, and 10 parts by mass of epoxy resin were dehydrated in vacuum, mixed and then added with 0.2 parts by mass of dibutyltin dilaurate, and the temperature was raised to 85 °C and reacted for 3 h ; Then add 10 parts by mass of dimethylolpropionic acid and 4 parts by mass of trimethylolpropane to react at 85°C for 2h; then add 8 parts by mass of 2-amino-2-methyl-1-propanol, propanediol 12 ...

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PUM

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Abstract

The invention relates to a wood lacquer with excellent formaldehyde removal performance, long-lasting purification effect, and water resistance and solvent resistance. 0.2-1 parts by mass of foaming agent, 0.1-1 parts by mass of leveling agent, 0.5-5 parts by mass of wetting agent, 1-3 parts by mass of thickener, 2-5 parts by mass of film-forming aid, 10-15 parts by mass of water Parts; Wherein, 2-amino-2-methyl-1-propanol and malonic acid dihydrazide were added in the preparation process of the aqueous polyurethane dispersion.

Description

technical field [0001] The invention relates to the field of wood varnish, in particular to a formaldehyde-removing wood varnish. Background technique [0002] Formaldehyde is one of the most serious indoor pollutants, ranking second on the priority control list of toxic chemicals in my country, and has been identified by the World Health Organization (WHO) as a carcinogenic and teratogenic substance. When people come into contact with a certain amount of formaldehyde, symptoms such as eye and skin irritation, breathing difficulties, eczema, headache, nausea and even coma will occur. Free formaldehyde seriously affects people's health and causes environmental pollution. Therefore, people require indoor formaldehyde content to be higher. Low is better. [0003] The newly renovated indoor environment often has excessive formaldehyde concentration, which is due to the release of formaldehyde from decoration materials such as particleboard, chemical fiber carpet, and inferior w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C08G18/58C08G18/44C08G18/38C08G18/28
CPCC08G18/2865C08G18/3834C08G18/44C08G18/58C09D175/04
Inventor 童慧
Owner 佛山市莱威化工科技有限公司