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Environmentally-friendly polyurethane finish capable of decomposing formaldehyde and preparation method thereof

A polyurethane topcoat, an environmentally friendly technology, applied in the field of coatings, can solve problems such as inability to remove formaldehyde

Active Publication Date: 2014-11-26
东莞大宝化工制品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are more and more negative ion formaldehyde removal products on the market, claiming that their products can effectively decompose and absorb formaldehyde, but negative ions themselves only have the effect of dust removal and sterilization, and cannot remove formaldehyde.

Method used

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  • Environmentally-friendly polyurethane finish capable of decomposing formaldehyde and preparation method thereof
  • Environmentally-friendly polyurethane finish capable of decomposing formaldehyde and preparation method thereof
  • Environmentally-friendly polyurethane finish capable of decomposing formaldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A kind of environment-friendly polyurethane finish paint that can decompose formaldehyde, comprises A component, B component and diluent, and the weight and number ratio of described A component and B component is 2:1;

[0051] Wherein, the solid content of the first component is 55%, including the following raw materials calculated by weight percentage:

[0052] High solid polyol resin 60%, vinyl acetate resin 10%, methyl isobutyl ketone (MIBK for short) 5%, butyl acetate (BAC for short) 10%, dispersant 0.5%, matting powder 5%, photocatalyst powder Semi-finished products 4% (among them, nano TiO 2Photocatalyst and high solid content polyol resin mixed at a weight ratio of 1:0.5), defoamer 0.35%, leveling agent 0.15%, anti-settling agent 1%, anion additive semi-finished product 4% (among them, anion powder and high solid content Polyol resin is mixed in a weight ratio of 1:5).

[0053] The solid content of the B component is 42%, and includes the following raw materia...

Embodiment 2

[0067] A kind of environment-friendly polyurethane finish paint that can decompose formaldehyde, comprises A component, B component and diluent, and the weight and number ratio of described A component and B component is 2:1;

[0068] Wherein, the solid content of the first component is 60%, and includes the following raw materials calculated by weight percentage:

[0069] 80% high solid polyol resin, 5% vinyl acetate resin, 1% methyl isobutyl ketone, 9% butyl acetate, 0.3% dispersant, 1% matting powder, 2% semi-finished photocatalyst powder (including nano TiO 2 Photocatalyst and high solid content polyol resin mixed at a weight ratio of 1:1.5), defoamer 0.65%, leveling agent 0.05%, anti-settling agent 1%, anion additive semi-finished product 1% (among them, anion powder and high solid content Polyol resin is mixed in a weight ratio of 1:10);

[0070] The solid content of the B component is 46%, and includes the following raw materials calculated by weight percentage: 45% o...

Embodiment 3

[0084] A kind of environment-friendly polyurethane finish paint that can decompose formaldehyde, comprises A component, B component and diluent, the solid content of described A component A component is 56%, and the weight and number ratio with B component is 2:1;

[0085] Wherein, the first component includes the following raw materials calculated by weight percentage:

[0086] 70% high solid polyol resin, 8% vinyl acetate resin, 1% methyl isobutyl ketone, 9% butyl acetate, 1% dispersant, 4% matting powder, 2% semi-finished photocatalyst powder (including nano TiO 2 Photocatalyst and high solid polyol resin are mixed in a weight ratio of 1:1), defoamer 0.4%, leveling agent 0.1%, anti-settling agent 3%, anion additive semi-finished product 1.5% (among them, anion powder and high solid content Polyol resin is mixed in a weight ratio of 1:9).

[0087] The solid content of the B component is 44%, and includes the following raw materials calculated by weight percentage: 45% of ...

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Abstract

The invention relates to the technical field of coatings, and particularly relates to an environmentally-friendly polyurethane finish capable of decomposing formaldehyde. The environmentally-friendly polyurethane finish comprises an A component, a B component and diluent, wherein the A component comprises a high-solid polyatomic alcohol resin, an ester solvent, a dispersing agent, gloss matting powder, a defoaming agent, an anion additive semi-finished product, a photocatalyst powdery semi-finished product, a flatting agent and an anti-settling agent. According to the invention, the synergistic effects of anion additive and photocatalyst powder are utilized, so that the finish not only reserves the characteristics of good workability, good water resistance, high hardness and the like of traditional polyurethane paints, but also has the characteristics of high solid content and low viscosity, so that low VOC (Volatile Organic Compounds) discharging is ensured in the construction process, the finish has low environment pollution performance, the content of dissociative TDI (toluene diisocyanate) is less than or equal to 0.5%, especially, the formaldehyde can be decomposed and the formaldehyde purification efficiency is more than or equal to 75%.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an environment-friendly polyurethane topcoat capable of decomposing formaldehyde and a preparation method thereof. Background technique [0002] Testing by authoritative organizations such as the Indoor Environment Monitoring Center of the China Interior Decoration Association indicates that in current home decoration, in addition to volatile harmful substances (VOC), free formaldehyde also poses serious hazards to the human body and the environment. Free formaldehyde is a highly toxic substance, which mainly comes from the adhesives used in wood-based panels, the glue used in interior decoration putty, furniture and chemical fiber carpets, etc. It can not only cause respiratory diseases, but also cause gastrointestinal disorders, serious Can cause death, has been identified as carcinogenic and teratogenic substances by the World Health Organization. [0003] With the strengthe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D175/06C09D175/14C09D7/12
Inventor 陈贺生徐凡
Owner 东莞大宝化工制品有限公司