Poly urethane (PU) polyurethane paint

A technology of polyurethane paint and butyl acetate, applied in the field of coatings, can solve problems such as unfavorable coating efficiency, long drying time, paint film defects, etc., and achieve the effects of saving painting time, fast drying, and good paint film hardness

Inactive Publication Date: 2012-07-04
展辰涂料集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The PU polyurethane wood lacquer in the prior art is usually sensitive to temperature, and generally when the temperature is higher than 30°C, it is easy to get prickly heat, causing paint film disadvantages
The drying time of PU polyurethane paint under normal temperature drying conditions is relatively long, usually more than 1 hour, which is not conducive to the improvement of coating efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Components and parts by weight

[0075] Component A:

[0076] 68 parts of alkyd resin, 6 parts of xylene solvent, 10 parts of butyl acetate solvent, 0.2 part of defoamer, 0.2 part of leveling agent, 0.5 part of bentonite, 16 parts of TP1250 mesh talcum powder.

[0077] First dissolve alkyd resin with xylene and butyl acetate solvent, stir, add defoamer and leveling agent, fully disperse; add bentonite, 1250 mesh talc powder, disperse sufficiently until the fineness is acceptable.

[0078] Component B:

[0079] L-7542 parts, IL145148 parts, 10 parts of butyl acetate solvent.

[0080] Fully dissolve L-75 and IL1451 with butyl acetate.

[0081] After mixing components A and B of this product evenly, spray it on the board, let it dry at room temperature for 5-10 minutes, then carry out forced drying at 50°C, after forced drying for 1 hour, polish it, and then apply it once or twice according to the above process . After 48 hours, test the adhesion with the 100-grid met...

Embodiment 2

[0083] Components and parts by weight thereof:

[0084] Component A:

[0085] 71 parts of alkyd resin, 6 parts of xylene solvent, 8 parts of butyl acetate solvent, 0.5 part of dispersant, 0.2 part of defoamer, 0.2 part of leveling agent, 0.5 part of organic amide anti-settling wax, 7 parts of silicon dioxide, 8 parts of propylene glycol methyl ether acetate solvent.

[0086] First dissolve alkyd resin with xylene and butyl acetate solvent, stir, add dispersant, defoamer, leveling agent, organic amide wax, fully disperse; add silica matting powder, disperse fully. Then add propylene glycol methyl ether acetate to disperse evenly.

[0087] The dispersant can be a high molecular weight acrylic block copolymer solution, preferably EFKA4401 or BYK-2000, such as EFKA-4401 from EFKA Netherlands.

[0088] Component B:

[0089]L-7545 parts, IL145158 parts, 7 parts of butyl acetate solvent.

[0090] Fully dissolve L-75 and IL1451 with butyl acetate.

[0091] After mixing component...

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PUM

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Abstract

The invention discloses poly urethane (PU) polyurethane paint capable of being forcedly dried and used for woodware big table-board coating and contains components by weight: 60-80 parts of alkyd resin, 5-20 parts of fillers, 15-25 parts of solvent, 0.1-0.3 part of defoaming agent, 0.1-0.3 part of flatting agent, 0.5-1 part of anti-settling agent, 35-45 parts of toluene diisocynate (TDI) affixture, 45-55 parts of TDI trimer and 5-10 parts of polyurethane -level solvent. The PU polyurethane paint capable of being forcedly dried can be forcedly dried at the temperature of 50 DEG C without having prickly heat and hidden bubbles easily, and greatly improves coating efficiency and effect of the PU polyurethane paint.

Description

technical field [0001] The invention relates to a coating, in particular to a PU polyurethane wood varnish, which is used for coating wood, countertops, mechanical equipment and the like. Background technique [0002] The PU polyurethane wood lacquer in the prior art is usually more sensitive to temperature, and generally when the temperature is higher than 30° C., it is easy to get prickly heat, causing paint film disadvantages. The drying time of PU polyurethane paint under normal temperature drying conditions is relatively long, usually more than 1 hour, which is not conducive to the improvement of coating efficiency. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a PU polyurethane paint that can be forced to dry at 50°C and is not prone to prickly heat. [0004] Technical scheme of the present invention is as follows: [0005] A kind of PU polyurethane paint, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D175/14C09D7/12
Inventor 陈寿生
Owner 展辰涂料集团股份有限公司
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