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A kind of pu white primer and preparation method thereof

A white primer and alkyd resin technology, applied in the field of coatings, can solve problems such as loss of merchants, poor adhesion, paint peeling, etc., and achieve the effect of solving paint peeling and high adhesion

Active Publication Date: 2019-10-18
广州富美奥涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the PU white primer produced by many manufacturers has poor adhesion between the artificial stone and the upper UV inkjet layer, resulting in frequent peeling and peeling of the varnish on the UV ink, resulting in many defective products. The merchants caused a lot of losses. When the artificial marble was sent abroad, the phenomenon of returning the goods due to paint peeling and falling off was frequent.

Method used

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  • A kind of pu white primer and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0018] The PU white primer of this embodiment comprises the following raw materials: 36 parts of alkyd resin, 0.7 part of photosensitizer, 2.5 parts of hydroxyethyl methacrylate, 8 parts of solvent, 17 parts of titanium dioxide, 30 parts of filler and 2 parts of auxiliary agent.

[0019] Wherein, the alkyd resin is soybean oil modified alkyd resin. Wherein, the photosensitizer is photosensitizer 1173. Wherein, the solvent is mixed with 3.9 parts of xylene and 4.1 parts of butyl ester. Wherein, the filler is composed of 20 parts of heavy calcium and 10 parts of talcum powder. Among them, the auxiliary agent contains 0.6 parts of dispersant, 0.6 part of defoamer, 0.4 part of catalyst and 0.4 part of anti-sedimentation agent. Among them, the dispersant is polyurethane dispersant produced by Efka; the defoamer is produced by Guangdong Zuotong ; The anti-sedimentation agent is an organic expansive soil; the catalyst is an organotin.

[0020] Its preparation method comprises the ...

Embodiment 2

[0026] The PU white primer of this embodiment includes the following raw materials: 40 parts of alkyd resin, 0.5 part of photosensitizer, 2.5 parts of hydroxyethyl methacrylate, 8 parts of solvent, 15 parts of titanium dioxide, 25 parts of filler and 1 part of auxiliary agent.

[0027] Wherein, the alkyd resin is a mixture of 8 parts of acrylic modified alkyd resin, 20 parts of nanometer modified alkyd resin and 12 parts of soybean oil modified alkyd resin.

[0028] Wherein, the photosensitizer is a mixture of 0.15 part of azobisisobutylcyanine, 0.1 part of benzophenone, 0.125 part of tetraethylthiuram and 0.125 part of silver halide.

[0029] Wherein, the solvent is matched with 4 parts of xylene and 4 parts of butyl ester.

[0030] Among them, the filler is formed by mixing 7.5 parts of heavy calcium with a particle size of 0.05um, 7.5 parts of talcum powder and 10 parts of barium sulfate.

[0031] Wherein, auxiliary agent comprises 0.3 part of dispersant, 0.3 part of defoa...

Embodiment 3

[0038] The PU white primer of this embodiment includes the following raw materials: 40 parts of alkyd resin, 0.8 parts of photosensitizer, 3.0 parts of hydroxyethyl methacrylate, 10 parts of solvent, 17 parts of titanium dioxide, 35 parts of filler and 2 parts of auxiliary agent.

[0039] Wherein, the alkyd resin is a mixture of 10 parts of acrylic modified alkyd resin, 20 parts of nanometer modified alkyd resin and 10 parts of soybean oil modified alkyd resin.

[0040] Wherein, the photosensitizer is a mixture of 0.32 parts of azobisisobutylcyanine, 0.24 parts of benzophenone, 0.16 parts of tetraethylthiuram and 0.08 parts of silver halide.

[0041] Wherein, the solvent is matched with 4 parts of xylene and 6 parts of butyl ester.

[0042] Among them, the filler is mixed with 12.25 parts of heavy calcium, 10.5 parts of talcum powder and 12.25 parts of barium sulfate with a particle size of 0.05um.

[0043] The filler is made by mixing 12.25 parts of heavy calcium with a part...

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Abstract

The invention discloses a PU (polyurethane) white primer and a preparation method thereof, wherein the PU white primer is prepared from the following raw materials in parts by mass: 36 to 40 parts of alkyd resin, 0.5 to 0.8 part of photosencitizer, 2.5 to 3.0 parts of hydroxyethyl methacrylate, 8 to 10 parts of solvents, 15 to 17 parts of titanium pigments, 25 to 35 parts of filling materials and 1 to 2 parts of auxiliary materials. The invention also discloses a preparation method. The PU white primer has the beneficial effects that the obtained PU white primer achieves a good adhesion effect with ink, so that the problems of pint falling and paint removal of over-printing varnish on ink due to poor adhesion force between the white primer and the ink can be solved.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a PU white primer and a preparation method thereof. Background technique [0002] At present, the PU white primer produced by many manufacturers has poor adhesion between the artificial stone and the upper UV inkjet layer, resulting in frequent peeling and peeling of the varnish on the UV ink, resulting in many defective products. The merchants have caused great losses. When the artificial marble is sent abroad, the phenomenon of returning the goods due to paint peeling and falling off often occurs. Contents of the invention [0003] In order to solve the above problems, the invention provides a PU white primer and a preparation method thereof. [0004] In order to achieve the above object, the present invention provides a PU white primer, wherein the PU white primer includes the following raw materials in mass fractions: 36-40 parts of alkyd resin, 0.5-0.8 parts of photosensitizer, me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/08C09D7/61C09D7/63
Inventor 洪银旺
Owner 广州富美奥涂料有限公司
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