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Cross-linking agent for cathode electrophoretic paint and production process thereof

A cathodic electrophoresis and production process technology, which is applied in the field of chemical industry, can solve the problems that the cross-linking agent cannot meet the corresponding requirements, and achieve the effect of increased anti-corrosion performance, strong operability, and low volatility

Inactive Publication Date: 2016-10-12
WEIFANG HELI WATER BASED PAINT MAKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current cross-linking agents cannot meet the corresponding requirements

Method used

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  • Cross-linking agent for cathode electrophoretic paint and production process thereof
  • Cross-linking agent for cathode electrophoretic paint and production process thereof
  • Cross-linking agent for cathode electrophoretic paint and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A crosslinking agent for cathodic electrophoretic paint, made of the raw materials of the following components in proportion by weight:

[0027]

[0028] The operation process is as follows:

[0029] (1) Check whether the special low-temperature kettle is clean, and whether the pipes and valves are in place.

[0030] (2) Use a vacuum to suck in the formulated amount of TDI, pass water through the shaft sleeve, and start stirring to add the formulated amount of organotin liquid.

[0031] (3) When the material temperature rises to 60°C, start to drop the isooctyl alcohol pumped into the metering tank in advance, and then add ethylene glycol ether dropwise after the dropwise addition is completed. This reaction is an exothermic reaction, pay attention to temperature changes, control the rate of addition at 300 kg / hour, and control the temperature between 60-65°C.

[0032] (4) After the dropwise addition, keep warm at 70-75°C for 2 hours, then raise the temperature to ...

Embodiment 2

[0034] A crosslinking agent for cathodic electrophoretic paint, made of the raw materials of the following components in proportion by weight:

[0035]

[0036] The operation process is as follows:

[0037] (1) Check whether the low-temperature kettle is clean and whether the pipes and valves are in place.

[0038] (2) Use a vacuum to suck in the formulated amount of TDI, pass water through the shaft sleeve, and start stirring to add the formulated amount of organotin liquid.

[0039] (3) When the material temperature rises to 65°C, start to drop the isooctyl alcohol pumped into the metering tank in advance, and then add ethylene glycol ether dropwise after the dropwise addition is completed. This reaction is an exothermic reaction, pay attention to temperature changes, control the rate of addition at 260 kg / hour, and control the temperature between 60-65°C.

[0040] (4) After the dropwise addition, keep warm at 70-75°C for 2 hours, then raise the temperature to 90°C, kee...

Embodiment 3

[0042] A crosslinking agent for cathodic electrophoretic paint, made of the raw materials of the following components in proportion by weight:

[0043]

[0044] The operation process is as follows:

[0045] (1) Check whether the low-temperature kettle is clean and whether the pipes and valves are in place.

[0046] (2) Use a vacuum to suck in the formulated amount of TDI, pass water through the shaft sleeve, and start stirring to add the formulated amount of organotin liquid.

[0047] (3) When the material temperature rises to 55°C, start to drop the isooctyl alcohol pumped into the metering tank in advance, and then add ethylene glycol ether dropwise after the dropwise addition is completed. This reaction is an exothermic reaction, pay attention to temperature changes, control the rate of addition at 260 kg / hour, and control the temperature between 60-65°C.

[0048] (4) After the dropwise addition, keep the reaction at 80°C for 4 hours. After the heat preservation, add p...

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PUM

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Abstract

The invention relates to a cross-linking agent for cathode electrophoretic paint and a production process thereof. The cross-linking agent is prepared from the following ingredient raw materials in parts by weight: 40 to 53 parts of composite alcohol ether, 24 to 33 parts of TDI (toluene diisocynate), 19 to 24 parts of isooctanol and 0.2 to 0.3 part of organic tin liquor. The cross-linking agent has the advantages that the process is simple, the maneuverability is high, and the like. In the preparation process of the cross-linking agent, the volatilization cannot easily occur; safety and environment protection are realized. The paint produced by using the cross-linking agent has the advantages that the paint film thickness is greater, and the anti-corrosion performance is greatly improved.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a crosslinking agent for cathodic electrophoretic paint and a production process thereof. Background technique [0002] The cross-linking agent is a substance that can act as a bridge between linear molecules, so that multiple linear molecules are bonded and cross-linked to form a network structure. The role of the cross-linking agent is to generate chemical bonds between the linear molecules, so that the linear molecules are connected to each other to form a network structure. [0003] In the production process of cathodic electrophoretic paint, the selection of cross-linking agent plays a very important role in the anti-corrosion, aging resistance, and non-volatile performance of the electrophoretic paint. However, the current crosslinking agents cannot meet the corresponding requirements. Contents of the invention [0004] The object of the present invention is to provide ...

Claims

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Application Information

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IPC IPC(8): C09D5/44C09D7/12C09D5/08C08G18/76C08G18/28
CPCC09D5/4496C08G18/2835C08G18/7614C09D5/08
Inventor 张希良谢俊
Owner WEIFANG HELI WATER BASED PAINT MAKING CO LTD
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