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Black top paint with high blackness and blue phase, and preparation method thereof

A blue-phase black topcoat and high blackness technology, which is applied in the preparation of high-blackness blue-phase black topcoat and the field of high-blackness blue-phase black topcoat, can solve the problem of not being able to meet the requirements of performance and blackness Appearance requirements for high-end cars, problems affecting the performance of topcoats, etc., to achieve excellent matching, high fullness, and good hardness

Inactive Publication Date: 2015-01-28
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary polyurethane black topcoat has problems of insufficient blackness and reddish-brown phase, which cannot meet the appearance requirements of high-end cars; if the blackness requirement is met by increasing the solubility of toner, it will affect the use of the topcoat performance, while increasing the cost, so the existing black topcoat has the problem of not being able to balance the performance and blackness requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The high-blackness blue phase black topcoat of the present embodiment mainly consists of the following components in parts by weight: 50 parts of hydroxy acrylic resin with high hydroxyl value, 10 parts of hydroxy acrylic resin with medium hydroxyl value, and 15 parts of hydroxy polyester resin , 0.3 parts of acrylic leveling agent, 0.1 part of silicone leveling agent, 3.0 parts of UV absorber, 1.0 part of hindered amine light stabilizer, 2.5 parts of high pigment carbon black, 2.5 parts of wetting and dispersing agent, synergistic dispersing agent 0.3 parts, 0.04 parts of organotin catalyst, 8 parts of propylene glycol methyl ether acetate, 2 parts of butyl acetate, 3.26 parts of xylene, and 2 parts of mixed dimethyl nylon acid.

[0039]Wherein, the hydroxy acrylic resin with high hydroxyl value has a hydroxyl value of 146 mgKOH / g; a solid content of 80% (the solvent is n-butyl acetate), an acid value of 11.0 mgKOH / g, and a viscosity of 6000-9000 cps / 25°C. The hydroxyl...

Embodiment 2

[0047] The high-blackness blue phase black finish paint of the present embodiment mainly consists of the following components in parts by weight: 60 parts of hydroxy acrylic resin with high hydroxyl value, 8 parts of hydroxy acrylic resin with medium hydroxyl value, and 10 parts of hydroxy polyester resin , 0.2 parts of acrylic leveling agent, 0.05 parts of silicone leveling agent, 2.0 parts of ultraviolet light absorber, 0.7 parts of hindered amine light stabilizer, 2.5 parts of high pigment carbon black, 2.5 parts of wetting and dispersing agent, synergistic dispersing agent 0.3 parts, 0.04 parts of organotin catalyst, 7 parts of propylene glycol methyl ether acetate, 2 parts of butyl acetate, 2.71 parts of xylene, and 2 parts of mixed dimethyl nylon acid.

[0048] Wherein, the hydroxy acrylic resin with high hydroxyl value has a hydroxyl value of 142mgKOH / g; a solid content of 75% (the solvent is n-butyl acetate), an acid value of 13.0mgKOH / g, and a viscosity of 6000-8000cps...

Embodiment 3

[0056] The high-blackness blue phase black finish paint of the present embodiment mainly consists of the following components in parts by weight: 65 parts of hydroxy acrylic resin with high hydroxyl value, 5 parts of hydroxy acrylic resin with medium hydroxyl value, and 10 parts of hydroxy polyester resin , 0.4 parts of acrylic leveling agent, 0.15 parts of silicone leveling agent, 1.0 parts of UV absorber, 0.5 parts of hindered amine light stabilizer, 2.5 parts of high pigment carbon black, 2.5 parts of wetting and dispersing agent, synergistic dispersing agent 0.3 parts, 0.04 parts of organotin catalyst, 6 parts of propylene glycol methyl ether acetate, 3.5 parts of butyl acetate, 1.61 parts of xylene, and 1.5 parts of mixed dimethyl nylon acid.

[0057] Wherein, the hydroxyl value of the hydroxy acrylic resin with high hydroxyl value is 145mgKOH / g; the solid content is 80% (the solvent is n-butyl acetate), the acid value is 12.0mgKOH / g, and the viscosity is 6000-10000cps / 25°...

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Abstract

The invention discloses a black top paint with high blackness and blue phase, and a preparation method thereof. The top paint is composed of the following components by weight: 55-75 parts of a hydroxyl acrylic resin, 10-15 parts of a hydroxyl polyester resin, 0.25-0.55 parts of a leveling agent, 1.5-4.0 parts of a light stabilizer, 2.0-3.0 parts of high coloring carbon black, 2.0-3.0 parts of a wetting dispersant, 0.2-0.4 part of a synergistic dispersant, 0.03-0.05 part of a catalyst and 12-16 parts of a solvent. The black top paint with high blackness and blue phase is compounded by the hydroxyl acrylic resin, the hydroxyl polyester resin and a plurality of auxiliary agents, and has the advantages of excellent overcoatability, good leveling property, good weather resistance, good hardness and good scratch resistance. Compared with conventional black top paint, the black top paint provided by the invention has high blackness, high blue phase, high glossiness, high distinctness and high fullness, and can meet requirements for high-grade black top paint by coating and repairing in car and automobile industries.

Description

technical field [0001] The invention belongs to the technical field of vehicle topcoats, in particular to a high-blackness blue-phase black topcoat, and also relates to a preparation method of a high-blackness blue-phase black topcoat. Background technique [0002] Acrylic polyurethane paint is a two-component coating, which is mainly composed of hydroxyl acrylic resin, pigments, additives, etc. When used, it is mixed with a curing agent in a certain proportion and coated during the activation period; the curing agent is aliphatic isocyanate . Acrylic polyurethane paint has excellent mechanical properties, high gloss and hardness, easy and good weather resistance, and has wide applicability. [0003] Acrylic polyurethane black topcoat is mainly used for coating and repairing of passenger cars and automobiles. As the outermost coating, it can protect and decorate the car body. At present, with the development of the automobile industry, not only the black topcoat is require...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C08G18/62C08G18/42
CPCC09D7/61C09D175/04C08L33/00C08L83/12C08K3/04C08L83/10
Inventor 刘合文王一昂魏永超刘凤山梁保光杨俊飞邱民举
Owner ZHENGZHOU YUTONG BUS CO LTD
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