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PU transparent primer and preparation method thereof

A technology of transparent primer and clean-odor alkyd resin, applied in the field of coatings, can solve the problems of heat rash, pinholes, influence on coating effect, uneven technology and other problems in the paint film, and achieve good heat resistance performance and easy sanding , good flexibility

Inactive Publication Date: 2018-12-11
ZHONGSHAN DOIT PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this PU transparent primer contains xylene, the environmental protection performance does not meet the requirements, and the quick-drying effect is not satisfactory
In addition, due to the uneven skills of construction personnel in the market and the different construction environments, ordinary primers are prone to problems such as prickly heat and pinholes in the paint film after construction, which seriously affects the coating effect and cannot meet the coating requirements of high-end furniture.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of PU transparent primer

[0024] Raw materials: 50 parts pure alkyd resin, 4200-10 8 parts, BYK141 0.2 parts, isomerized xylene 3 parts, talcum powder 5 parts, transparent powder 5 parts, zinc stearate 2 parts, dibutyl tin dilaurate 1.5 parts, 22 parts of nitrocellulose liquid, 3 parts of sec-butyl ester. The nitrocellulose liquid is a 1 / 4 nitrocellulose butyl acetate solution, in which the mass fraction of the nitrocellulose is 40%.

[0025] Preparation steps:

[0026] (1) Mix and disperse the pure alkyd resin, anti-settling, defoamer, and isomerized xylene at 500 rpm for 10 minutes;

[0027] (2) Add talc, transparent powder, zinc stearate under stirring, and disperse at 1000 revolutions until the fineness is ≤50μm;

[0028] (3) Add the drier, nitrocellulose liquid, and sec-butyl ester under stirring, and disperse for 3 minutes at 1000 revolutions to obtain.

Embodiment 2

[0030] Preparation of PU transparent primer

[0031] Raw materials: 40 parts pure alkyd resin, 4200-10 10 parts, BYK8801 0.1 parts, isomeric xylene 8 parts, talc 3 parts, transparent powder 8 parts, zinc stearate 1 part, dibutyl tin dilaurate 5 parts, 10 parts of nitrocellulose liquid, 5 parts of sec-butyl ester. The nitrocellulose liquid is a 1 / 4 nitrocellulose butyl acetate solution, in which the mass fraction of the nitrocellulose is 50%.

[0032] Preparation steps:

[0033] (1) Mix and disperse the pure alkyd resin, anti-settling, defoamer, and isomerized xylene at 1000 rpm for 3 minutes;

[0034] (2) Add talc, transparent powder, zinc stearate under stirring, and disperse at 1500 revolutions until the fineness is ≤50μm;

[0035] (3) Add drier, nitrocellulose liquid, and sec-butyl ester under stirring, and disperse for 8 minutes at 500 rpm, and it is ready.

Embodiment 3

[0037] Preparation of PU transparent primer

[0038] Raw materials: 60 parts of pure alkyd resin, 5 parts of HX-8800, 0.5 parts of EFKA2720, 2 parts of isomeric xylene, 8 parts of talc, 2 parts of transparent powder, 5 parts of zinc stearate, 5 parts of dibutyl tin dilaurate 1 part, 25 parts of nitrocellulose liquid, 2 parts of sec-butyl ester. The nitrocellulose solution is a 1 / 4 nitrocellulose butyl acetate solution, in which the mass fraction of the nitrocellulose is 46%.

[0039] Preparation steps:

[0040] (1) Mix and disperse the pure alkyd resin, anti-settling, defoamer, and isomeric xylene at 600 rpm for 4 minutes;

[0041] (2) Add talc, transparent powder and zinc stearate under stirring, and disperse at 1200 revolutions until the fineness is ≤50μm;

[0042] (3) Add the drier, nitrocellulose liquid, and sec-butyl ester under stirring, and disperse for 5 minutes at 700 revolutions to obtain.

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PUM

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Abstract

The invention discloses PU transparent primer. The PU transparent primer is characterized by being prepared from the following raw materials in parts by weight: 40 to 60 parts of deodorized alkyd resin, 5 to 10 parts of PU anti-settling pulp, 0.1 to 0.5 part of defoaming agent, 2 to 8 parts of isomeric xylene, 3 to 8 parts of talcum powder, 2 to 8 parts of transparent powder, 1 to 5 parts of zincstearate, 1 to 5 parts of drier, 10 to 25 parts of nitrocotton fluid, and 2 to 5 parts of butanol acetate. The PU transparent primer product is good in comprehensive performance, ultrahigh in wear resistance, good in heat rash prevention performance, and low in odor after being dried for 24 hours.

Description

Technical field [0001] The invention relates to the technical field of coatings, in particular to a PU transparent primer and a preparation method thereof. Background technique [0002] Coating is an indispensable decorative material in modern life. PU coating is a kind of coating with a large amount and a wide range in modern coatings, which gives decoration and protection. PU paint is the collective name of all polyurethane coatings. Its film-forming method is natural film-forming, no special process, good hardness, good fullness, good adhesion, good durability and good hand feeling. The paint film is thin and not very hard, but its adhesion is particularly good, its gloss is uniform, and it does not look very bright, which can well show the spinning and color of the floor. There is a certain period of use after it is equipped. PU paint is currently widely used in industry and construction, so the technology is mature, and there are many colors, which can easily meet the spra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D101/18C09D7/61C09D7/63
Inventor 李卫强许水连甘文华吴哲张海星
Owner ZHONGSHAN DOIT PAINT CO LTD
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