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Quick-drying hydroxyl acrylic resin for automobile refinishing coatings, and preparation method of quick-drying hydroxyl acrylic resin
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A technology of fast-drying hydroxyacrylic acid and car refinish paint, applied in the field of hydroxy acrylic resin, can solve the problem that the drying speed of car refinish paint is getting lower and lower, shorten the hard drying time, improve wear resistance, and speed up the reaction speed of paint film Effect
Inactive Publication Date: 2017-12-12
广东迪爱生彤德树脂有限公司
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[0003] Hydroxy acrylic resins synthesized from hydroxyl monomers often fail to meet customer requirements for faster and faster drying of automotive refinish coatings
Method used
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Embodiment 1
[0036] 1) Throw 10kg of butyl acetate and 25kg of xylene into the reaction kettle, and raise the temperature to 130°C;
[0037] 2) Take 1kg of acrylic acid, 30kg of methyl methacrylate, 10kg of butyl acrylate, 15kg of hydroxyethyl acrylate, 10kg of 4-hydroxybutyl acrylate, and 10kg of benzoyl peroxide to form material B, stir evenly, and drop it evenly over 3 hours In the reactor, the temperature is controlled at 130°C;
[0038] 3) After the dropwise addition, keep at 130°C for 2 hours;
[0039] 4) Add C material benzoyl peroxide 1kg, and maintain at 130°C for 3 hours;
[0042] 1) Throw 15kg of butyl acetate and 20kg of xylene into the reaction kettle, and raise the temperature to 130°C;
[0043] 2) Take 1kg of acrylic acid, 35kg of methyl methacrylate, 10kg of butyl acrylate, 10kg of hydroxyethyl acrylate, 15kg of 4-hydroxybutyl acrylate, and 12kg of benzoyl peroxide to form material B, stir evenly, and drop it evenly over 3 hours In the reactor, the temperature is controlled at 130°C;
[0044] 3) After the dropwise addition, maintain at 130°C for 2 hours;
[0045] 4) Add C material benzoyl peroxide 1kg, and maintain at 130°C for 3 hours;
[0048] 1) Throw 20kg of butyl acetate and 15kg of xylene into the reaction kettle, and raise the temperature to 135°C;
[0049] 2) Take 1kg of acrylic acid, 30kg of methyl methacrylate, 10kg of butyl methacrylate, 15kg of hydroxyethyl methacrylate, 20kg of 4-hydroxybutyl acrylate, and 10kg of tert-butyl peroxybenzoate to form material B, and stir evenly , drop evenly into the reactor for 3 hours, and control the temperature at 135°C;
[0050] 3) After the dropwise addition, maintain at 135°C for 2 hours;
[0051] 4) Add C material tert-butyl peroxybenzoate 1kg, and maintain at 135°C for 3 hours;
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Abstract
The invention relates to quick-drying hydroxyl acrylic resin for automobile refinishing coatings, and a preparation method of the quick-drying hydroxyl acrylic resin. The quick-drying hydroxyl acrylic resin is prepared from the following raw materials: a material A, a material B and a material C, wherein the material A is prepared from the following components by weight percent: 10-20% of butyl acetate and 15-25% of dimethylbenzene; the material B is prepared from the following components by weight percent: 1-2% of acrylic acid or methyl acrylic acid, 30-40% of methyl methacrylate or styrene, 10-20% of butyl acrylate or butyl methacrylate, 5-18% of hydroxyethyl acrylate or hydroxyethyl methacrylate, 10-30% of 4-hydroxybutyl acrylate and 5-10% of benzoyl peroxide, tert-butyl peroxybenzoate or di-tert-butyl peroxide; the material C is prepared from the following component by weight percent: 1-3% of benzoyl peroxide, tert-butyl peroxybenzoate or di-tert-butyl peroxide. Compared with the similar resin in the prior art, the quick-drying hydroxyl acrylic resin for the automobile refinishing coatings can obviously accelerate the reaction speed of paint films so as to enable the hardness of the paint films to be more rapidly increased in a drying process and further short the hard drying time, and can reach the requirements for polishing within 4h; furthermore, the working life, weather resistance and wear resistance of the resin are improved to different extents.
Description
technical field [0001] The invention relates to a hydroxyacrylic resin, in particular to a quick-drying hydroxyacrylic resin for automobile repair paint and a preparation method thereof. Background technique [0002] In the construction process of automobile refinish paint, the paint film that has just been applied has to wait for a period of time until the paint film is dry before it can be polished and polished. With the continuous increase of time and labor costs, the automobile refinish paint industry has a high demand for fast repair and efficient repair. The requirements are getting higher and higher, and it is required that the paint film can be quickly dried and polished. This paper focuses on the resin synthesis technology and formula design ideas, and proposes a synthesis method of fast-drying acrylic resin for automotive refinish paint, and a two-component acrylic polyurethanecoating for automotive refinish paint. It is mainly composed of hydroxyl acrylic resin a...
Claims
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