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A kind of multi-purpose high weather resistance acrylic electrophoretic coating and preparation method thereof

A high-weather-resistant acrylic and electrophoretic coating technology, applied in electrophoretic coatings, coatings, etc., can solve problems such as only reaching 250 hours, unable to meet the weather resistance requirements of topcoats, etc. Smooth and bright effect

Active Publication Date: 2015-11-04
HAOLISEN COATING SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Invention patent (CN 1757683A) discloses a preparation method of cathodic electrophoretic coating with high weather resistance. The coating is prepared by using closed polyurethane resin and epoxy resin. Due to the presence of epoxy resin, the weather resistance can only reach 250 hours of UV aging Gloss loss rate ≤ 10%, far from meeting the weather resistance requirements as a topcoat

Method used

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  • A kind of multi-purpose high weather resistance acrylic electrophoretic coating and preparation method thereof
  • A kind of multi-purpose high weather resistance acrylic electrophoretic coating and preparation method thereof
  • A kind of multi-purpose high weather resistance acrylic electrophoretic coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0038] 1) The formula of the fluorine-containing cationic acrylic modified resin:

[0039]

[0040]

[0041] Glycidyl methacrylate, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, trifluorooctyl methacrylate, dodecafluoroheptyl methacrylate, benzene peroxide The formyl is mixed uniformly and is called mixed solution a; the formula amount of azobisisobutyronitrile and butyl acetate is mixed evenly and is called mixed solution b. Add methyl isobutyl ketone and n-butanol into a reaction vessel with a stirrer and a condenser according to the formula amount, blow nitrogen gas, raise the temperature to 95°C, start to add the mixed solution a dropwise, keep the temperature for half an hour after 4 hours of dripping, Then add the mixed solution b dropwise, drop it for half an hour, then keep it warm for 1 hour, then add diethanolamine dropwise according to the formula, drop it for half an hour, then raise the temperature to 110°C, aminate for 4 hours, then cool ...

Embodiment 2

[0057] 1) The formula of the fluorine-containing cationic acrylic modified resin:

[0058]

[0059]

[0060] Glycidyl methacrylate, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, trifluorooctyl methacrylate, dodecafluoroheptyl methacrylate, benzene peroxide The formyl is mixed uniformly and is called mixed solution a; the formula amount of azobisisobutyronitrile and butyl acetate is mixed evenly and is called mixed solution b. Add methyl isobutyl ketone and n-butanol into a reaction vessel with a stirrer and a condenser according to the formula amount, blow nitrogen gas, raise the temperature to 95°C, start to add the mixed solution a dropwise, keep the temperature for half an hour after 4 hours of dripping, Then add the mixed solution b dropwise, drop it for half an hour, then keep it warm for 1 hour, then add diethanolamine dropwise according to the formula, drop it for half an hour, then raise the temperature to 110°C, aminate for 4 hours, then coo...

Embodiment 3

[0076] 1) The formula of the fluorine-containing cationic acrylic modified resin:

[0077]

[0078] Glycidyl methacrylate, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, trifluorooctyl methacrylate, dodecafluoroheptyl methacrylate, benzene peroxide The formyl is mixed uniformly and is called mixed solution a; the formula amount of azobisisobutyronitrile and butyl acetate is mixed evenly and is called mixed solution b. Add methyl isobutyl ketone and n-butanol into a reaction vessel with a stirrer and a condenser according to the formula amount, blow nitrogen gas, raise the temperature to 95°C, start to add the mixed solution a dropwise, keep the temperature for half an hour after 4 hours of dripping, Then add the mixed solution b dropwise, drop it for half an hour, then keep it warm for 1 hour, then add diethanolamine dropwise according to the formula, drop it for half an hour, then raise the temperature to 110°C, aminate for 4 hours, then cool down to be...

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Abstract

The invention relates to a multipurpose high weather resistant acrylic acid electrophoretic paint and a preparation method thereof. The paint comprises two components, and is produced from high weather resistant acrylic acid modified emulsion and weather resistant color paste at a ratio of 8:1. The high weather resistant acrylic acid modified emulsion comprises following ingredients, by weight: 33 to 39 portions of fluorine-containing cationic acrylic acid modified resin, 14 to 16 portions of blocked aliphatic isocyanate curing agent, 0.8 to 1 portion of a neutralizer and 44 to 52.2 portions of deionized water. The weather resistant color paste comprises following ingredients, by weight: 15 to 18 portions of acrylic acid grinding resin, 1 to 2 portions of a surfactant, 42 to 50 portions of deionized water and 34 to 38 portions of a pigment filler. Fineness of the weather resistant color paste is 15um or less. The paint of the invention is suitable for colorized, white and grey systems. Appearance of coatings is flat, smooth and bright after one time of electrophoretic painting. Yellowing resistance, mechanical properties, coating liquid stability, acid resistance, alkali resistance and weather resistance of the coatings are excellent.

Description

[technical field] [0001] The invention belongs to the technical field of acrylic cathodic electrophoretic coatings and preparation methods, and relates to a multi-purpose high weather resistance acrylic electrophoretic coating and a preparation method thereof. [Background technique] [0002] After decades of development, cathodic electrophoretic coatings have been widely used in the automotive industry and other metal coating fields such as building materials, hardware, and home appliances. Epoxy cathodic electrophoretic coatings have excellent adhesion and anti-corrosion properties, but due to the poor weather resistance of epoxy resins, they cannot be used as topcoats, while acrylic cathodic electrophoretic coatings have good color retention, gloss retention, and weather resistance Good and full coating gloss, can meet the requirements of single-layer coating and reduce construction cost. However, the weather-resistant electrophoretic coatings currently on the market have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/16C09D5/44C09D7/12C08F220/22C08F220/28C08F220/32C08F220/14C08F220/18
Inventor 周贤孔凡桃刘薇薇徐庆陈豪杰张桂花
Owner HAOLISEN COATING SHANGHAI
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