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Polyurethane white paint and its preparation method and application

A white paint and formula technology, applied in the field of coatings, can solve the problems of easy yellowing and low whiteness

Active Publication Date: 2017-11-03
中华制漆(新丰)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a polyurethane white paint and its preparation method, aiming at overcoming the problems of low whiteness and easy yellowing in the existing polyurethane white paint

Method used

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  • Polyurethane white paint and its preparation method and application
  • Polyurethane white paint and its preparation method and application
  • Polyurethane white paint and its preparation method and application

Examples

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preparation example Construction

[0028] Correspondingly, on the basis of the formula of the polyurethane white paint of the above-mentioned embodiment of the present invention, the embodiment of the present invention also provides a preparation method of the polyurethane white paint. In one embodiment, the preparation method of the polyurethane white paint specifically comprises the following steps:

[0029] Step S01: weighing each component according to the above polyurethane white paint formula;

[0030] Step S02: mixing the weighed alkyd resin, dispersant, defoamer, titanium dioxide, fluorescent whitening agent, propylene glycol methyl ether acetate and butyl acetate, and then grinding;

[0031] Step S03: Mixing the material ground in step S02 with matting powder, anti-settling agent and leveling agent.

[0032] Specifically, the formula components of the polyurethane white paint weighed in the above step S01 are the same as the formula components of the polyurethane white paint mentioned above, and for t...

Embodiment 1

[0041] A polyurethane white paint and a preparation method thereof. Wherein, polyurethane white paint is made of the following components by weight:

[0042]

[0043] The preparation method of this polyurethane white paint comprises the steps:

[0044] Step S01, according to the weight of each component provided in Example 1, add the soybean oil alkyd resin weighed into the manufacturing tank, and gradually add unsaturated carboxylic acid polymer, 2.5-bis -(5-tert-butyl-2-benzoxazolyl)thiophene, continue to stir for 10min;

[0045] Step S02, increase the stirring speed to 200rpm / min, gradually add rutile titanium dioxide, 2.5-bis-(5-tert-butyl-2-benzoxazolyl)thiophene, propylene glycol methyl ether acetate and butyl acetate, keep Continue to stir and disperse for 10 minutes at a speed of 200rpm / min, and then grind on a sand mill to control the grinding fineness so that the fineness of the ground material is ≤15um;

[0046] Step S03, continue to stir the ground material a...

Embodiment 2

[0050] A polyurethane white paint and a preparation method thereof. Wherein, polyurethane white paint is made of the following components by weight:

[0051]

[0052]

[0053] The preparation method of this polyurethane white paint comprises the steps:

[0054] Step S01, according to the weight of each component provided in Example 1, add the soybean oil alkyd resin weighed into the manufacturing tank, and gradually add unsaturated carboxylic acid polymer, 2.5-bis -(5-tert-butyl-2-benzoxazolyl)thiophene, continue to stir for 15min;

[0055] Step S02, increase the stirring speed to 300rpm / min, gradually add rutile titanium dioxide, 2.5-bis-(5-tert-butyl-2-benzoxazolyl)thiophene, propylene glycol methyl ether acetate and butyl acetate, keep Continue to stir and disperse at a speed of 300rpm / min for 12 minutes, then grind on a sand mill to control the grinding fineness so that the fineness of the ground material is ≤15um;

[0056] Step S03, continue to stir the ground ma...

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Abstract

The invention relates to the technical field of coatings, and specifically discloses a polyurethane white paint and a preparation method and application thereof. The polyurethane white paint comprises the following formula components in weight percent: 40%-50% of alkyd resin; 30%-40% of titanium dioxide; 0.1%-0.5% of fluorescent whitening agent; 0.5%-1% of dispersant; Foaming agent 0.2%~0.5%; Propylene glycol methyl ether acetate 2%~3.5%; Butyl acetate 4%~15%; Matting powder 0%~6%; Anti-settling agent 2%~4%; Leveling agent 0.2% ~0.5%. The polyurethane white paint is mixed with rutile titanium dioxide and fluorescent whitening powder, which can be obviously whitened, and has good hiding power and weather resistance. More importantly, the preparation method controls the grinding of the titanium dioxide and the fluorescent whitening agent together to form a titanium dioxide slurry, so as to ensure the whitening effect of the coating.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a polyurethane white paint and its preparation method and application. Background technique [0002] With the continuous development of social production, people's demand for coatings and demand types are also increasing, and coatings that meet various performance requirements and color requirements are booming. Although paints with more and more colors have become the goal pursued by paint research and development developers, white is the most common color used by humans, and the development of white paint still occupies a pivotal position in the paint field. [0003] The white phase in white paint mainly comes from the white pigment titanium dioxide. Titanium dioxide can be divided into two structures: rutile type and anatase type. Among them, the crystal structure of rutile type titanium dioxide is dense, relatively stable, with low optical activity, good weather resistance,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/08C09D7/12
Inventor 罗瑞芳王文彪袁九军王泽继
Owner 中华制漆(新丰)有限公司
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