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Yellowing-resistant nitro white matt finish and preparation method thereof, use method

A technology of anti-yellowing and whiteness, which is applied to the device and coating of the surface coating liquid, which can solve the problems of poor yellowing resistance, yellowing and yellowing of white lacquer, and achieve improved gloss retention and surface Smooth, not easy to precipitate effect

Active Publication Date: 2009-03-18
SHENZHEN GRANDLAND ENVIRONMENTAL COATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nitro-lacquer has a large market both in furniture and decoration paint, and the advantages of nitro-lacquer are easy construction, environmental protection, fast drying speed, and can be repainted without sanding; but the disadvantage is more prominent, that is, the yellowing resistance is too poor , because nitrocellulose paint is mainly composed of nitrocellulose, rosin resin and alkyd resin, and rosin resin and alkyd resin are easily oxidized and turn yellow, especially the yellowing of white nitrocellulose paint is a problem in the industry

Method used

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  • Yellowing-resistant nitro white matt finish and preparation method thereof, use method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] First prepare anti-yellowing nitro white matte finish paint of the present invention:

[0059] Get each component according to the weight listed in "Example 1" in Table 1, and the preparation method is as follows:

[0060] Step 1: Pre-dissolution of nitrocellulose: Take the mixed solvent of xylene, butyl acetate, acetone, and propylene glycol methyl ether acetate in the formula and add it to nitrocellulose, stir evenly at a low speed for 5-10 minutes until the nitrocellulose is completely dissolved, and set aside.

[0061] Step 2: According to the weight ratio, take the thermosetting acrylic resin and dispersant in the components and mix them evenly at low speed, then add rutile titanium dioxide, disperse at high speed for 20 minutes until the fineness is ≤20um, after adding matting powder, disperse at 1000RPM at high speed 15 minutes until fineness ≤ 25um, then add leveling agent and butyl acetate, disperse at medium speed for 10 minutes until uniform.

[0062] Step 3...

Embodiment 2

[0072] Prepare anti-yellowing nitro white matte finish paint of the present invention:

[0073] Get each component according to the weight listed in "Example 2" in Table 1, and the preparation method follows the steps below: Step 1: pre-dissolving of nitrocellulose: get xylene, butyl acetate, acetone, propylene glycol methyl ether acetate in the formula Add the mixed solvent to the nitrocellulose, stir evenly at low speed for 5-10 minutes until the nitrocellulose is completely dissolved, set aside.

[0074] Step 2: According to the weight ratio, take the thermosetting acrylic resin and dispersant in the components and mix them evenly at low speed, then add rutile titanium dioxide, disperse at high speed for 20 minutes until the fineness is ≤20um, after adding matting powder, disperse at 1000RPM at high speed 15 minutes until fineness ≤ 25um, then add leveling agent and butyl acetate, disperse at medium speed for 10 minutes until uniform.

[0075] Step 3: Add the pre-dissolved...

Embodiment 3

[0085] With the weight of each component listed in "Example 3" in Table 1, repeat the method described in the above-mentioned embodiment 2 (only the weight of each component changes), and prepare the anti-yellowing nitro white matte finish paint main paint; The diluent was prepared by repeating the components, proportioning and preparation method of the diluent in Example 2.

[0086] The main paint and the diluent were mixed uniformly according to the weight ratio of 1:1.5, and then applied and dried according to the method described in Example 2 to obtain the anti-yellowing nitro white matte finish paint film.

[0087] For routine performance testing, the method refers to ISO11507:1997, and the results (dry film thickness 20-30 μm) are shown in the corresponding data of "Example 3" in Table 2.

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Abstract

The invention relates to anti-yellowing nitryl white matt surface lacquer which is prepared from the following components in weight percentage: 31 to 70 percent of a mixed solvent, 15 to 25 percent of nitrocellulose, 15 to 30 percent of thermosetting acrylic resin, 0.3 to 0.5 percent of a dispersant, 10 to 20 percent of rutile type titanium pigment, 0.1 to 0.3 percent of a leveling agent, 0.2 to 1.5 percent of flatting powder and 1.7 to 5 percent of butyl acetate. The preparation method comprises the following steps: the nitrocellulose is pre-dissolved; the mixed solvent and the nitrocellulose are mixed and are dispersed at intermediate speed till the nitrocellulose is fully dissolved; the thermosetting acrylic resin and the dispersant are evenly stirred at low speed and are added with the rutile type titanium pigment, the mixture is dispersed for 15 to 20 minutes at high speed till the fineness is less than or equal to 20 um; the flatting powder is added to the mixture and the mixture is dispersed for 10 to 15 minutes at high speed till the fineness is less than or equal to 25 um; the leveling agent and the butyl acetate are added to the mixture, and the mixture is dispersed for 10 minutes at intermediate speed until the mixture is even; and after the dissolved nitrocellulose is added to the mixture under the low-speed stirring, the mixture is evenly stirred for 10 to 15 minutes at low speed and is filtered to obtain the anti-yellowing nitryl white matt surface lacquer. The lacquer has good anti-yellowing property; when a lacquer film is placed in an indoor place where no sunlight irradiates, the lacquer film has no obvious yellowing within one year; and the lacquer has high weather resistance and gloss retention.

Description

technical field [0001] The invention relates to an anti-yellowing nitro white matte finish paint and a preparation method and application method thereof. Background technique [0002] Nitro-lacquer has a large market both in furniture and decoration paint, and the advantages of nitro-lacquer are easy construction, environmental protection, fast drying speed, and can be repainted without sanding; but the disadvantage is more prominent, that is, the yellowing resistance is too poor , because nitrocellulose paint is mainly composed of nitrocellulose, rosin resin and alkyd resin, and rosin resin and alkyd resin are easily oxidized and turn yellow, especially the yellowing of white nitrocellulose paint is a problem in the industry. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-yellowing-resistant nitro white matte topcoat. The present invention also provides a preparation method and a use method of the above-...

Claims

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Application Information

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IPC IPC(8): C09D101/18C09D133/00C09D5/00B05D7/24
Inventor 郭忠义
Owner SHENZHEN GRANDLAND ENVIRONMENTAL COATING CO LTD
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