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A water-based high-temperature metallic paint and its construction technology that can be used in wet-on-wet primer-free systems

A metal paint, wet-on-wet technology, applied in the field of coatings, can solve problems such as complex components, and achieve the effects of simple construction process, good adhesion, and good low-temperature film-forming properties

Active Publication Date: 2019-12-10
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent application with publication number CN 104817912 A "a water-based metal paint and its preparation method" uses anionic acrylic copolymer emulsion, methyl etherified amino resin, water, water-based metal glitter powder, film-forming aid, and leveling agent , pH adjuster, wetting agent, thickener, non-ionic surfactant, preservative and antifungal agent as raw materials, the water-based metallic paint with excellent performance is finally obtained, but this patent needs to add more additives , such as film-forming aids, wetting agents, leveling agents, non-ionic surfactants, preservatives, anti-fungal agents, the composition is relatively complex

Method used

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  • A water-based high-temperature metallic paint and its construction technology that can be used in wet-on-wet primer-free systems
  • A water-based high-temperature metallic paint and its construction technology that can be used in wet-on-wet primer-free systems
  • A water-based high-temperature metallic paint and its construction technology that can be used in wet-on-wet primer-free systems

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Experimental program
Comparison scheme
Effect test

Embodiment 1 2

[0034] Embodiment 1 preparation of dimer acid modified polyamide polyamine epichlorohydrin resin

[0035] Get 200g to be dissolved in ethanol, make the solution that concentration is 10% (m / v), then add the 1-(3-dimethylaminopropyl group)-3-ethylcarbodiimide hydrochloride of 0.15g, Mix evenly, raise the temperature to 120°C, slowly add 110g of dimer acid dropwise under stirring condition, react for 1h, then raise the temperature to 150°C, continue the reaction for 2h, dry under reduced pressure, cool naturally, and discharge the product.

Embodiment 2 2

[0036] Example 2 Preparation of Dimer Acid Modified Polyamide Polyamine Epichlorohydrin Resin

[0037] Get 200g polyamide polyamine epichlorohydrin resin and dissolve in ethanol, make the solution that concentration is 10% (m / v), then add 0.2g of 1-(3-dimethylaminopropyl)-3-ethyl Carbodiimide hydrochloride, mix well, heat up to 120°C, slowly add 120g of dimer acid dropwise under stirring condition, react for 1h, then heat up to 150°C, continue to react for 2h, dry under reduced pressure, cool naturally, discharge Instantly.

Embodiment 3-6

[0038] Embodiment 3-6 Preparation of water-based high-temperature metallic paint

[0039] The formula prepared by embodiment 3-6 water-based high-temperature metallic paint is shown in the table.

[0040]

[0041]

[0042] In the above table, the waterborne acrylic polyol dispersion is Bayer's Waterborne Polyurethane Polyol Dispersions for Bayer's The amine neutralizer is Dow AMP-95; the water-based dispersant is Tego-760W; the titanium dioxide is DuPont R706; the carbon black is Cabot C311; the methyl etherified amino resin is BASF Luwipal069; the silicon-coated water-based silver powder is Aika PCR501; thickener is BASF 1130; color paste: bring your own.

[0043] The preparation method of A component comprises the following steps:

[0044] (1) After dropping into the water-based acrylic polyol dispersion, water-based polyurethane dispersion, water-based dispersant and water of dosage successively, at 400 rpm, stir for 6 minutes;

[0045] (2) in the material that ...

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Abstract

The invention relates to a water-based high-temperature metal paint which can be used in a wet-on-wet floating-coat-free system and a construction process of the paint. The water-based high-temperature metal paint comprises a component A and a component B, wherein the component A comprises a water-based acrylic polyol dispersion, a water-based polyurethane dispersion, superfine talcum powder, superfine barium sulfate, aluminum tripolyphosphate, titanium dioxide, carbon black, a water-based dispersant, an amino resin mixture and pure water, and the component B comprises a water-based acrylic polyol dispersion, a water-based polyurethane dispersion, an amine neutralizer, 2-butoxy ethanol, silicon-coated water-based silver powder, color paste, an water-based dispersant, an amino resin mixture, a thickener and water. The water-based high-temperature metal paint provided by the invention can eliminate the step of spraying a floating coat, so that the construction process is simplified, thecost and energy consumption are reduced, relatively good weather resistance and stone-hit resistance are achieved, and greenness and environmental friendliness are achieved..

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based high-temperature metallic paint which can be used in a wet-on-wet intermediate coating-free system and a construction process thereof. Background technique [0002] Since the beginning of the 21st century, the world's important issues in the field of automotive coatings and coatings are to adapt to the requirements of the times: environmental protection, energy saving, resource saving, and reduction of coating costs on the basis of high quality, and reduction of VOC (volatile organic compounds) discharge volume. In order to obtain better decoration and corrosion resistance, various metal parts such as auto parts adopt multi-layer coating methods, such as primer, intermediate paint, and clear varnish. The traditional multi-layer coating process generally adopts the method of multi-coating and multi-baking, that is, after each spraying of a paint, it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D175/04C09D7/65B05D5/06B05D7/00
CPCB05D5/068B05D7/572B05D2502/00B05D2503/00C08K2003/0806C08K2003/2241C08K2003/3045C08L2205/035C09D133/00C09D175/04C08L75/04C08L61/20C08L77/00C08K13/02C08K3/34C08K3/30C08K3/04C08K3/22C08K9/10C08K3/08C08L33/00B05D2420/01B05D2420/02
Inventor 冯兆华李海华李柏文赵立英陈容爱
Owner GUANGDONG YATU CHEM