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Unsaturated polyester modified polyurethane coating varnish

A technology of polyester modification and clear topcoat, applied in the field of clear topcoat, can solve the problems of poor compatibility of unsaturated polyester paint, haze, complex construction ratio, etc., to achieve strong adhesion, easy polishing, simple The effect of construction performance

Inactive Publication Date: 2009-02-11
上海展辰涂料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are disadvantages of complex construction ratio and poor compatibility between unsaturated polyester paint and polyurethane paint, which will cause haze

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The composition and weight ratio of the main agent of the clear finish paint are as follows:

[0055] Acrylic resin 40%, unsaturated polyester resin 40%, butyl acetate 8%, diacetone alcohol 1%, propylene glycol methyl ether acetate 3%, styrene 6%, defoamer 0.3%, leveling agent 0.1%, Conductive agent 0.3%, anti-settling agent 0.3%, accelerator 0.5%, polymerization inhibitor 0.5%.

[0056] Described curing agent component and weight ratio are as follows:

[0057] Toluene diisocyanate (TDI) trimer 32.0%, toluene diisocyanate (TDI)-trimethylolpropane adduct 32.0%, butyl acetate 36.0%.

[0058] The initiator is a dibutyl phthalate solution of methyl ethyl ketone peroxide with a weight content of 50.0% methyl ethyl ketone peroxide.

[0059] The diluent components and weight ratio are: 15.0% of butyl acetate, 20.0% of styrene, 15.0% of propylene glycol methyl ether acetate, and 50.0% of xylene.

[0060] Stir and mix the clear paint main agent, curing agent, initiator and thin...

Embodiment 2

[0084] The paint main agent components and weight ratio are as follows: 45% acrylic resin, 35% unsaturated polyester resin, 8% butyl acetate, 3% propylene glycol methyl ether acetate, 1% diacetone alcohol, 6% styrene, 0.3% defoamer, 0.1% leveling agent, 0.3% conductive agent, 0.3% anti-settling agent, 0.8% accelerator, 0.2% polymerization inhibitor. The components and weight ratio of the curing agent are as follows: 32.0% of toluene diisocyanate (TDI) trimer, 32.0% of toluene diisocyanate (TDI)-trimethylolpropane adduct, and 36.0% of butyl acetate.

[0085] The initiator is a dibutyl phthalate solution of methyl ethyl ketone peroxide with a weight content of 50.0% of methyl ethyl ketone peroxide.

[0086] The distribution ratio of the diluent components is: 20.0% of butyl acetate, 20.0% of styrene, 10.0% of propylene glycol methyl ether acetate, and 50.0% of xylene.

[0087] Construction ratio: main agent: curing agent: initiator: thinner = 100:50:0.5:50. Construction method...

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Abstract

The invention provides unsaturated polyester modified polyurethane top coat paint which consists of a main agent of the top-coat paint, a firming agent, an evocating agent and a diluent. In the main agent of the top-coat paint, an unsaturated polyester resin with a weight of 35.0 to 40.0 percent of the gross weight of the main agent of the top-coat paint and acrylic resin with a weight of 40.0 to 45.0 percent of the gross weight of the main agent of the top-coat paint are included. The unsaturated polyester modified polyurethane top-coat paint can effectively solve the problems of construction complexity and compatibility; besides, the product has the advantages of good abundance, easy polishing, high rigidity and being very suitable for the coating production of a musical instrument. The surface of the coated product has the characteristics of high rigidity, good abundance, and high adhesive attraction, being hard to generate air bubbles and pinholes as well as uneasy cracking. Besides, compared with the construction mode of mixing polyurethane paint and unsaturated polyester paint used in the current market, the unsaturated polyester modified polyurethane top-coat paint has simpler construction performances and appearance effect of a coated film.

Description

technical field [0001] The invention relates to a clear finish paint, in particular to a modified polyurethane clear finish paint for musical instrument surface coating. Background technique [0002] The coatings that are used on the surface of musical instruments basically all use unsaturated polyester paint and polyurethane paint to form by mixing the oil in the later stage. It has the advantages of high hardness, good fullness, excellent adhesion, good flexibility, and easy polishing. However, there are disadvantages such as complex construction ratio and poor compatibility between unsaturated polyester paint and polyurethane paint, which will cause haze. For example, the application number is 200610034563.8, the application date is August 23, 2006, and the name of the invention is a Chinese invention patent application for a polyurethane modified unsaturated poly-clear topcoat, which is characterized in that the paint is made of polyester (PU) and Saturated polyester (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/02C09D167/06
Inventor 刘志刚叶亮
Owner 上海展辰涂料有限公司
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