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Preparation method of benzene-free odor-free scratch-resistant polyurethane matt gloss white topcoat for woodware

An anti-scratch and polyurethane technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems that plague manufacturers and engineering technicians, fingerprints are not easy to disappear, and are not resistant to scratches, so as to facilitate solvent release and improve Glossy, accelerated convection effect

Inactive Publication Date: 2014-12-24
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today's huge wood paint market has higher and higher requirements for paint products. Especially wood polyurethane (PU) paint has excellent comprehensive performance and is widely used by consumers. However, the product has many shortcomings, such as whitening, foaming, and peeling. layer, not resistant to scratches, ghosting, fingerprints are not easy to disappear, etc.
These problems bother manufacturers and engineers and technicians, and some problems have not been solved for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to the formula weight ratio, add 5 parts of mixed solvent into the dispersion tank, add 18 parts of 70% solid-containing benzene-free low-odor alkyd resin, stir and dissolve evenly, then add 28 parts of titanium dioxide, 8 parts of heavy calcium powder, 4 parts of powder, 2.0 parts of dispersant, disperse at high speed for 30-40 minutes, grind to a fineness of ≤10μ in a horizontal sand mill, filter, pack and seal for later use.

[0026] Add 27 parts of 70% solid-free benzene-free low-odor alkyd resin and 5 parts of mixed solvent into the paint bucket, stir and dissolve evenly, add the above-mentioned ground white pulp at medium speed, and add titanate modification at low speed 0.3 parts of silicone leveling agent, 0.3 parts of hand feeling leveling agent, 0.2 parts of anti-yellowing agent, 0.2 parts of defoaming agent, 2 parts of polyamide wax, after stirring and passing the test, filter and pack to obtain the benzene-free and low-odor type Scratch-resistant t...

Embodiment 2

[0028] Add 40 parts of TDI / TMP adduct, 25 parts of HDI trimer, and 35 parts of mixed solvent into the dispersion tank and stir evenly. After passing the test, filter and pack to obtain a benzene-free, low-odor, anti-scratch two-component polyurethane Part B of wood matt white finish.

[0029] Mix the paint according to the ratio of component A: component B = 1:0.5, and add thinner to adjust the viscosity to spray or brush.

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Abstract

The invention relates to a preparation method of a benzene-free odor-free scratch-resistant polyurethane matt gloss white topcoat for woodware. The benzene-free odor-free scratch-resistant polyurethane matt gloss white topcoat is composed of a component A and a component B which are in the weight ratio of 1:0.5, wherein the component A is composed of odor-free alkyd resin, titanium dioxide, matting powder, calcium carbonate powder, a dispersing agent, an anti-yellowing agent, a flatting agent, a hand feeling agent, a defoaming agent, an anti-settling agent and a solvent; and the component B is a benzene-free curing agent with TDI, an HDI tripolymer or an addition product as a main component. The matt gloss white topcoat prepared by using the preparation method does not contain arene, aldehyde ketone or heavy metals, and no residual odor is left on a paint film after 48 hours; the matt gloss white topcoat can not be settled when being stored, is good in flatting performance, capable of forming a thick film at one step without sagging, soft in hand feeling, full and exquisite, slippery, good in scratch resistance and capable of generating a mirror-surface-like full decorative effect and bringing elegance and comfort for people, and conforms to the modern aesthetic view so as to be popular to the market and consumers; and the matt gloss white topcoat is widely applied to the surfaces of woodware, metals, plastics and other products to take protective and decorative effects.

Description

technical field [0001] The invention relates to a preparation method of a two-component polyurethane wood matt white finish, in particular to an environment-friendly, benzene-free, low-odor, anti-scratch two-component polyurethane wood matt white finish. Background technique [0002] With the improvement of people's material and cultural living standards, consumers have higher and higher requirements for the coating effect of furniture, which has led to the rapid growth of domestic wood coatings. The coating effect of the furniture surface will directly affect consumers' choice of furniture, and matt wood coatings occupy a large market share in the furniture coating market. Today's huge wood paint market has higher and higher requirements for paint products. Especially wood polyurethane (PU) paint has excellent comprehensive performance and is widely used by consumers. However, the product has many shortcomings, such as whitening, foaming, and peeling. layer, not resistant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D175/14C09D7/12
Inventor 许钧强李泽刚康伦国欧永杰姚东生
Owner UNION FOSHAN CHEM
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