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Electrophoretic grinding resin, electrophoretic color paste prepared therefrom and application of color paste

A technology of grinding resin and electrophoresis, which is applied in electrophoretic coatings, pigment pastes, coatings, etc., and can solve the problems of limited use range, poor compatibility, and complexity of dispersing resins for grinding.

Inactive Publication Date: 2020-10-27
武汉科利尔立胜工业研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of its components and the strict requirements for on-site control of the coatings used for cathodic electrophoretic coating, different electrophoretic coatings have extremely high requirements for the dispersion resin used for grinding during preparation, which greatly limits the Range of use of ground dispersion resins for electrophoretic coating
In addition, due to the characteristics of poor compatibility, prone to precipitation and layering, poor stability and low solid content in the traditional color paste production process
The main reason for these disadvantages is the lack of a grinding resin with strong wrapping ability for toner and good compatibility with multi-resin systems

Method used

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  • Electrophoretic grinding resin, electrophoretic color paste prepared therefrom and application of color paste
  • Electrophoretic grinding resin, electrophoretic color paste prepared therefrom and application of color paste

Examples

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preparation example Construction

[0032] The preparation process of the electrophoretic grinding resin is that raw materials such as acrylic resin and azobisisobutyronitrile are metered into a mixing and dropping tank, the temperature is maintained below 25° C., and then stirred evenly for use; 1.4-butanediol and ethylene glycol are mixed. The butyl ether raw material is directly put into the reaction kettle. After the feeding is completed, steam is added to heat up under nitrogen protection, and the temperature is raised to 80-95 ° C. The mixture is directly added dropwise, and the dropping time is about 3-5 hours. After dripping the material, continue to be kept at 80~95 ℃ for another 2 hours; after the previous step is finished, cool down to 45~55 ℃, add the isocyanate curing agent of the formula amount, keep the temperature at 45~55 ℃ for 1 hour, and the previous step ends After that, add the formula amount of acetic acid, and keep the temperature at 45-55° C. for 1 hour.

[0033] Meanwhile, the low-molecu...

Embodiment 1

[0057] This embodiment discloses a preparation method of electrophoresis grinding resin, which includes the following preparation process:

[0058] (1) Preparation of isocyanate curing agent: get diblock type isocyanate cross-linking agent: 50%, butanone oxime: 25%, organic catalyst: 10%, ethylene glycol ether: 15% reaction and make isocyanate curing agent; Wherein, The organic catalyst is a commonly used organic catalyst, which is not described in detail in the present invention. At the same time, the process of preparing the isocyanate curing agent is a conventional process, which is not described in detail in the present invention. In addition, the di-blocked isocyanate crosslinking agent consists of toluene diisocyanate: 30%, isophorone diisocyanate: 30%, butanone oxime: 25%, methyl isobutyl ketone: 5%, ethylene glycol Butyl ether: 10% prepared.

[0059] (2) Preparation of electrophoresis grinding resin: it includes taking the following raw materials and mixing them in m...

Embodiment 2

[0062] This embodiment discloses a preparation method of electrophoresis grinding resin, which includes the following preparation process:

[0063] (1) Preparation of isocyanate curing agent: get diblock type isocyanate crosslinking agent: 25%, butanone oxime: 50%, organic catalyst: 10%, ethylene glycol ethyl ether: 15% reaction makes isocyanate curing agent; Wherein, The organic catalyst is a commonly used organic catalyst, which is not described in detail in the present invention. At the same time, the process of preparing the isocyanate curing agent is a conventional process, which is not described in detail in the present invention.

[0064] In addition, the di-blocked isocyanate crosslinking agent consists of toluene diisocyanate: 30%, isophorone diisocyanate: 30%, butanone oxime: 25%, methyl isobutyl ketone: 5%, ethylene glycol Butyl ether: 10% prepared.

[0065] (2) Preparation of electrophoresis grinding resin: it includes taking the following raw materials and mixin...

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Abstract

The invention discloses an electrophoretic grinding resin, an electrophoretic color paste prepared from the electrophoretic grinding resin and application of the color paste, and belongs to the technical field of surface coating. The electrophoretic color paste is prepared by mixing the following raw materials by mass percentage: 10-30% of electrophoretic grinding resin, 5-70% of toner, 0.2-1.0% of a pH regulator, 2-15% of a dispersing and wetting agent, 5-20% of an auxiliary agent and the balance deionized water. The electrophoretic color paste designed by the invention has relatively high stability and relatively high compatibility, and has relatively good application value in the aspect of surface coating of automobile industry, building materials, hardware, household appliances and thelike.

Description

technical field [0001] The invention relates to a polymer coating, belonging to the technical field of surface coating, in particular to an electrophoretic grinding resin, an electrophoretic color paste prepared therefrom, and the use of the color paste. Background technique [0002] Since the 1970s, cathodic electrophoretic coatings have been industrially applied and developed rapidly. Because of their excellent corrosion resistance, excellent mechanical properties and their high degree of automation in coating applications, their industrial applications have become more and more widely. However, due to the complexity of its components and the strictness of on-site control requirements for coatings with cathodic electrophoretic coating, different electrophoretic coatings have extremely high requirements for the dispersing resin used for grinding during preparation, which greatly limits the The range of use of ground dispersion resins for electrocoating. In addition, the t...

Claims

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Application Information

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IPC IPC(8): C08G18/65C08G18/32C08G18/62C09D17/00C09D5/44
CPCC08G18/3206C08G18/6225C08G18/6511C09D5/448C09D17/001
Inventor 李再亮周敦孝申杰李龙魏保峰李阳
Owner 武汉科利尔立胜工业研究院有限公司
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