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
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[0037] Example 1
[0038] The high-blackness blue phase black topcoat of this embodiment is mainly composed of the following components by weight: 50 parts of high hydroxyl value hydroxy acrylic resin, 10 parts of medium hydroxyl value hydroxy acrylic resin, and 15 parts of hydroxy polyester resin , Acrylic leveling agent 0.3 parts, silicone leveling agent 0.1 parts, ultraviolet light absorber 3.0 parts, hindered amine light stabilizer 1.0 part, high pigment carbon black 2.5 parts, wetting and dispersing agent 2.5 parts, 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 nylate.
[0039] Wherein, the hydroxyl value of the high hydroxyl value hydroxy acrylic resin is 146mgKOH / g; the solid content is 80% (solvent is n-butyl acetate), the acid value is 11.0mgKOH / g, and the viscosity is 6000-9000cps / 25°C. The hydroxyl value of the hydro...
Example Embodiment
[0046] Example 2
[0047] The high blackness blue phase black topcoat of this embodiment is mainly composed of the following components by weight: 60 parts of high hydroxyl value hydroxy acrylic resin, 8 parts of medium hydroxyl value hydroxy acrylic resin, 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, 2 parts of mixed dimethyl nylonate.
[0048] Wherein, the hydroxyl value of the high hydroxyl value hydroxy acrylic resin is 142 mgKOH / g; the solid content is 75% (solvent is n-butyl acetate), the acid value is 13.0 mgKOH / g, and the viscosity is 6000-8000cps / 25°C. The hydroxyl...
Example Embodiment
[0055] Example 3
[0056] The high blackness blue phase black topcoat of this embodiment is mainly composed of the following components by weight: 65 parts of high hydroxyl value hydroxy acrylic resin, 5 parts of medium hydroxyl value hydroxy acrylic resin, and 10 parts of hydroxy polyester resin , 0.4 part of acrylic leveling agent, 0.15 part of silicone leveling agent, 1.0 part of ultraviolet light absorber, 0.5 part of hindered amine light stabilizer, 2.5 part of high pigment carbon black, 2.5 part 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, 1.5 parts of mixed dimethyl nylate.
[0057] Wherein, the hydroxyl value of the high hydroxyl value hydroxy acrylic resin is 145mgKOH / g; the solid content is 80% (solvent is n-butyl acetate), the acid value is 12.0mgKOH / g, and the viscosity is 6000-10000cps / 25°C. The hydroxyl valu...
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