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Preparation method for environmental-protection and odorless anti-scratch polyurethane wood matt black top coat

An anti-scratch and polyurethane technology, applied in polyurea/polyurethane coatings, coatings, pigment pastes, etc., can solve problems that plague manufacturers and engineering technicians, fingerprints are not easy to disappear, and are not resistant to scratches, etc., to achieve excellent flow Flatness, good anti-slip feel, improved anti-scratch effect

Inactive Publication Date: 2015-06-17
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 27.5 parts of mixed solvent into the dispersion barrel, add 48 parts of 70% solid-containing net-flavored alkyd resin, add Stir 10 parts of carbon black dispersant evenly, slowly add 15 parts of special 4 carbon black, 0.2 parts of defoamer, 0.3 parts of anti-sedimentation agent, and then disperse at a high speed of 1000-1200r / min for 45-60min, and then to the horizontal sand The mill circulates and grinds for 4 to 6 times until the fineness particle size of the color paste reaches the requirement of ≤10 μ, then moves it to the paint mixing bucket for defoaming and viscosity adjustment, and is filtered and packaged to obtain solvent-based carbon black paste.

Embodiment 2

[0027] According to the weight ratio of the formula, add 16 parts of mixed solvent into the dispersion tank, add 46 parts of 70% solid-containing alkyd resin, stir evenly, then add 5 parts of matting powder, 0.5 parts of dispersant, and disperse at high speed for 30-40 minutes. Add 30 parts of carbon black slurry, 0.3 parts of titanate-modified silicone chelating leveling agent, 0.2 parts of modified siloxane defoamer, and 2 parts of polyamide wax under low-speed stirring. The first component of an environment-friendly, clean-odor type anti-scratch two-component polyurethane wood matte black topcoat was prepared.

Embodiment 3

[0029] Add 40 parts of TDI / TMP adduct, 30 parts of HDI trimer, and 30 parts of mixed solvent into the dispersion tank and stir evenly. After passing the test, filter and pack to obtain an environmentally friendly and odor-resistant two-component polyurethane wood mat Gloss black finish B component.

[0030] 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 present invention relates to a preparation method for an environmental-protection and odorless anti-scratch polyurethane wood matt black top coat, which comprises double components A and B according to a weight ratio of 1:0.5, wherein the component A comprises a odorless anti-scratch alkyd resin, matting powder, a dispersant, a carbon black color paste, a modified leveling agent, a defoamer, an anti-sedimentation agent and a solvent, and the component B comprises TDI, a HDI trimer or a benzene-free curing agent adopting the adduct as the main component. According to the present invention, the prepared matt black top coat of the present invention does not contain aromatic hydrocarbons, aldehydes, ketones and heavy metals, and the odorless effects is achieved after the paint film is dried for 48 h; the matt black top coat has characteristics of no precipitate during storage, high solid while low viscosity, good leveling property, thick film formed in one time, no sagging, soft handfeeling, plump, delicate, solemn, rigid, soft, and full mirror-like decorative effect, and elegant and comfortable feeling, is adapted to the modern aesthetics, is popular in markets and customers, and is widely applied on the surface of wood ware, metal, plastics and other products so as to provide the protection decoration effect.

Description

technical field [0001] The invention relates to a preparation method of a two-component polyurethane matte black finish for woodware, in particular to an environment-friendly, odor-free and anti-scratch two-component polyurethane woodware matte black 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 resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D175/06C09D7/12
CPCC09D175/14C08L2205/035C09D17/005C08L77/00C08L83/04C08K3/04
Inventor 许钧强康伦国欧永杰姚东生
Owner UNION FOSHAN CHEM
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