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Velvet anti-scratch waterborne polyurethane paint

A water-based polyurethane and polyurethane dispersion technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of weakened gloss, insufficient elastic touch, poor scratch resistance, weather resistance and chemical resistance, and achieve scratch resistance. Effects of sexual touch, good touch, excellent scratch resistance

Inactive Publication Date: 2016-03-09
SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, some coatings that can provide excellent soft and elastic touch generally have the defects of poor scratch resistance, weather resistance, and chemical resistance, resulting in weakened gloss and obvious scratches, while some coatings with improved scratch resistance have Insufficient elastic touch, which seriously affects the quality and appearance of the coating film

Method used

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  • Velvet anti-scratch waterborne polyurethane paint
  • Velvet anti-scratch waterborne polyurethane paint
  • Velvet anti-scratch waterborne polyurethane paint

Examples

Experimental program
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Effect test

preparation example Construction

[0017] The invention provides a kind of water-based polyurethane coating with velvet feeling and anti-scratch. The water-based polyurethane coating is composed of the following components in terms of weight percentage: 20-40% of at least one polysiloxane-modified polyurethane dispersion , at least one acrylate-modified polyurethane dispersion 40-60%, aqueous nano-alumina dispersion 0.5-5%, polyurethane foaming elastic beads 1-8%, thickener 0.5-15%, defoamer 0.1 -1%, curing agent 1-5%. The preparation method of the water-based polyurethane coating comprises the following steps: weighing each component according to the above-mentioned percentage by weight, and mixing polysiloxane-modified polyurethane dispersion, acrylate-modified polyurethane dispersion, and water-based nano-alumina dispersion 1. Add polyurethane foam elastic beads and defoamer to the mixer and mix, then add thickener and curing agent, stir at 400-600 rpm for at least 30 minutes, and mix evenly to get a velvet-...

Embodiment 1

[0021] The velvety, scratch-resistant water-based polyurethane coating consists of the following components in percent by weight:

[0022]

Embodiment 2

[0024] The velvety, scratch-resistant water-based polyurethane coating consists of the following components in percent by weight:

[0025]

[0026]

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Abstract

The invention relates to velvet anti-scratch waterborne polyurethane paint. The velvet anti-scratch waterborne polyurethane paint is prepared from, by weight, 20-40% of at least one type of polysiloxane-modified polyurethane dispersoid, 40-60% of at least one type of acrylate-modified polyurethane dispersoid, 0.5-5% of waterborne nanometer aluminium oxide dispersion liquid, 1-8% of polyurethane foaming elastic balls, 0.5-15% of thickening agent, 0.1-1% of defoaming agent and 1-5% of solidifying agent. A preparation method of the waterborne polyurethane paint includes the following steps of weighing the components according to the weight percents, adding polysiloxane-modified polyurethane dispersoid, acrylate-modified polyurethane dispersoid, waterborne nanometer aluminium oxide dispersion liquid, polyurethane foaming elastic balls and the defoaming agent in a stirring machine to be mixed, then adding the thickening agent and the solidifying agent, and conducting even mixing. Compared with the prior art, the waterborne polyurethane paint has excellent anti-scratch performance and a good touch sense and is mainly applied to thin film packaging materials.

Description

[technical field] [0001] The invention relates to the technical field of film packaging materials, in particular to a velvet-like, scratch-resistant water-based polyurethane coating. [Background technique] [0002] In recent years, waterborne polyurethane tactile coatings have been widely used in the field of packaging and printing. Among them, some coatings that can provide excellent soft and elastic touch generally have the defects of poor scratch resistance, weather resistance, and chemical resistance, resulting in weakened gloss and obvious scratches, while some coatings with improved scratch resistance have Insufficient elastic touch, which seriously affects the quality and appearance of the coating film. Therefore, scratch resistance and good touch have become an important index to measure the performance of waterborne polyurethane coatings. The combination of high scratch resistance and good touch means that the surface of the material can be kept shiny and beautifu...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D175/04C09D7/12
CPCC09D175/14C08K2201/011C08L2205/025C08L2205/03C09D7/61C09D7/65
Inventor 于锋黄斗兴曹慧芬
Owner SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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