Processing method of single-component PU baking varnish and single-component PU baking varnish

A single-component, paint-baking technology, which is applied in the field of paint baking, can solve the problems that paint cannot be stored for continued use, temporary ingredients are troublesome to mix, and paint cannot be guaranteed, so as to reduce hidden dangers in quality, save time and space, and increase production efficiency.

Inactive Publication Date: 2012-11-07
惠州市华昱美实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. It is troublesome to mix the temporary ingredients of components A and B, and it is easy to make mistakes. It must be handled by a special person. It is inconvenient to use and the production efficiency is not high.
[0006] 3. It is impossible to guarantee that the paint can be 100% ready to be used and all waste will be lost. The excess paint after deployment cannot be stored and continued to be used. It can only be scrapped, which wastes a lot of cost and causes serious pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: One-component PU baking varnish (matte type)

[0022] The formula of polyhydroxy resin system is: castor oil alkyd resin 60.4-69.4 kg, matting powder 10-15 kg, leveling agent 0.2-0.3 kg, defoamer 0.2-0.3 kg, ethoxy ether acetate 6-8 kg , Xylene 5-7 kg, butyl acetate 4-5 kg;

[0023] 12 to 14 kilograms of blocked isocyanate that has been blocked or more blocked by phenol or other monofunctional materials containing active hydrogen atoms.

[0024] Preparation steps-

[0025] ① Put the castor oil alkyd resin into the paint mixing tank, add the ethoxy ether acetate solvent and stir at medium speed, that is, the stirring speed is 700-900 rpm, and add leveling agent and defoamer in sequence;

[0026] ② After stirring for 4-7 minutes at medium speed, that is 700-900 rpm, slowly add matting powder, add while stirring, and then add xylene and butyl acetate in sequence. After adding, stir at high speed, that is, stirring speed is 1100~ 1200 rpm;

[0027] ③. After stirring for 1...

Embodiment 2

[0028] Example 2: One-component PU baking varnish (high-gloss type)

[0029] The formula of the polyhydroxy resin system is: hydroxy acrylic resin 49.4-55.4 kg, R-type titanium dioxide 10-15 kg, leveling agent 0.2-0.3 kg, defoaming agent 0.2-0.3 kg, ethoxy ether acetate 6-8 kg , Xylene 10-12 kg, butyl acetate 4-5 kg;

[0030] 10-12 kg of blocked isocyanate that has been blocked or more blocked by phenol or other monofunctional substances containing active hydrogen atoms.

[0031] Preparation steps-

[0032] ① Put the hydroxy acrylic resin into the paint mixing tank, add the ethoxy ether acetate solvent, stir at a medium speed, that is 700-900 rpm, and add the leveling agent and defoamer in turn;

[0033] ②. After stirring for 4-7 minutes at medium speed, that is, 700-900 rpm, slowly add R-type titanium dioxide, add while stirring, and then add xylene and butyl acetate successively. After adding, the high speed is 1400-1600 rpm. / Minute stirring;

[0034] ③. After stirring for 28-33 min...

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PUM

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Abstract

The invention provides a processing method of single-component PU baking varnish and a single-component PU baking varnish, relating to a baking varnish, particularly relating to a processing method of single-component PU baking varnish and a single-component PU baking varnish. The processing method of single-component PU baking varnish comprises adding blocked isocyanate into the prescription of polyhydroxy resin system, mixing well, filtering and packing to obtain a product, wherein the blocked isocyanate is prepared by blocking or repeatedly blocking polyisocyanate with phenol or other monofunctional materials comprising active hydrogen atoms. The processing method of single-component PU baking varnish provided by the invention has the advantages that the method is simple, the time can be saved, the production efficiency is high, the coating and applying method of the product which is produced by using the method is similar to that of conventional binary liquid type product, the performance and effects of the binary liquid type PU varnish can be realized and the application of the method is convenient.

Description

Technical field [0001] The invention relates to baking varnish, in particular to a processing method of a single-component PU baking varnish and a single-component PU baking varnish. The PU baking varnish not only has high fullness and gloss, but also has the characteristics of excellent chemical resistance, acid resistance, alkali resistance, salt spray resistance, petroleum product resistance and other decorative properties and good applicability. technical background [0002] At present, most PU paints used for the coating of workpieces are two-component curable coatings, which are composed of two components: A (polyhydroxy resin) and B (polyisocyanate). They are stored separately at the factory, and according to regulations before construction. The proportion is evenly mixed and then coated and used, it has the following drawbacks: [0003] After the components A and B are mixed in proportion, the pot life is extremely short and it is not storage-resistant. It is easy to cross...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D175/14C09D175/06C09D7/12C08G18/80
Inventor 罗勇彬
Owner 惠州市华昱美实业有限公司
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