Preparation method of bisphenol A polyethenoxy ether toughening agent

A polyoxyethylene ether and toughening agent technology, applied in the field of toughening agents, can solve the problems of low chemical corrosion resistance, low electrical performance, and poor aging resistance, achieve good electrical properties, enhance aging resistance, and improve The effect of flexibility

Active Publication Date: 2009-02-18
杭州白浪助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem that the present invention needs to solve is to provide a kind of preparation method of bisphenol A polyoxyethylene ether toughening agent, and it mainly solves the flexibility, anticorrosion and int

Method used

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  • Preparation method of bisphenol A polyethenoxy ether toughening agent

Examples

Experimental program
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Example Embodiment

[0024] Example 1: The preparation method of the bisphenol A polyoxyethylene ether toughening agent of this example is used to prepare the molecular formula: (n=3) product, the reaction equation is:

[0025] The specific steps are:

[0026] a. Prepare 1140 parts by weight of EO monomer in the measuring tank, and put 1100 parts by weight of BPA and 2.5 parts by weight of solid NaCO into the reactor 3 , KOH mixed catalyst, after stirring evenly, close the reactor for many times to exhaust nitrogen;

[0027] b. Begin to add 50 parts by weight of EO dropwise to the solid starter material produced in step a, and perform the first solid-liquid phase reaction. The temperature of the first solid-liquid phase reaction is 20° C., and the reaction time is 30 Min; Then 100 parts by weight of EO was added dropwise to continue the second solid-liquid phase reaction. The temperature of the second solid-liquid phase reaction was 30°C, and the reaction time was 30 Min;

[0028] c. After the seco...

Example Embodiment

[0033] Example 2: The preparation method of the bisphenol A polyoxyethylene ether toughening agent of this example is used to prepare the molecular formula: (n=3) product, the reaction equation is:

[0034] The specific steps are:

[0035] a. Prepare 1145 parts by weight of EO monomer in the measuring tank, and put 1100 parts by weight of BPA and 2.5 parts by weight of solid NaCO into the reactor 3 , KOH mixed catalyst, after stirring evenly, close the reactor for many times to exhaust nitrogen;

[0036] b. Begin to add 50 parts by weight of EO dropwise to the solid starter material produced in step a, and perform the first solid-liquid phase reaction. The temperature of the first solid-liquid phase reaction is 23° C., and the reaction time is 40 Min; Then 100 parts by weight of EO was added dropwise to continue the second solid-liquid phase reaction. The temperature of the second solid-liquid phase reaction was 40°C, and the reaction time was 40 Min;

[0037] c. After the seco...

Example Embodiment

[0041] Example 3: The preparation method of the bisphenol A polyoxyethylene ether toughening agent of this example is used to prepare the molecular formula: (n=3) product, the reaction equation is:

[0042] The specific steps are:

[0043] a. Prepare 1160 parts by weight of EO monomer in the measuring tank, and put 1100 parts by weight of BPA and 2.7 parts by weight of solid NaCO into the reactor 3 , KOH mixed catalyst, after stirring evenly, close the reactor for many times to exhaust nitrogen;

[0044] b. Begin to add 50 parts by weight of EO dropwise to the solid starter material produced in step a to perform the first solid-liquid phase reaction. The temperature of the first solid-liquid phase reaction is 25° C., and the reaction time is 50 Min; Then 100 parts by weight of EO was added dropwise to continue the second solid-liquid phase reaction, the temperature of the second solid-liquid phase reaction was 45°C, and the reaction time was 50 Min;

[0045] c. After the second ...

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Abstract

The invention relates to a flexibilizer used in the series coatings of cathode electrophoresis coating and polyurethane, in particular to a preparation method of a bisphenol A polyoxyethylene ether flexibilizer. The method aims to resolve the technical problem that the cathode electrophoresis coating prepared by the prior art has poor flexibility, , anti-corrosion, as well as adhesive power between layers, the mechanical strength and the ageing-resistant performance, and week chemical resistance, the electrical property, and the like. The procedures of the preparation method are as follows: EO monomer is prepared in a measuring tank, and BPA, solid NaCO3 and KOH mixed catalyst are added in a reaction kettle and then are stirred, and the air is exhausted and the reaction kettle is closed; the EO monomer is added in drops into solid starting agent to conduct solid-liquid-phase reaction; the temperature is increased, and EO is added to have normal gas-liquid-phase reaction, and then the solution is treated by ageing, and the temperature of the solution is reduced, and phosphoric acid and polyether adsorbent are added to treat low-boiling residue and regulate the acidity; the solution is pressed and filtered, enough water and aluminosilicate adsorbent are added to remove water content and residual metal ion, thus the finished product is obtained.

Description

technical field [0001] The invention relates to a toughening agent for cathodic electrophoretic paint and polyurethane series coatings, in particular to a preparation method of a bisphenol A polyoxyethylene ether toughening agent. Background technique [0002] Electrophoretic coatings are formed through processes such as electrolysis, electrophoresis, electrodeposition, and electroosmosis. It has the characteristics of uniform coating on various parts of workpieces with complex geometric shapes, and the formed paint film has excellent corrosion resistance. At present, the coatings commonly used in the market include polybutadiene anodic electrophoretic coatings and acrylic anodic electrophoretic coatings. Since the object to be coated is an anode, the metal of the object to be coated and the surface treatment film are dissolved during the electrodeposition process, which not only makes electrodeposition The color of the coating film deepens and also reduces the physical, mec...

Claims

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Application Information

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IPC IPC(8): C07C43/20C07C41/03C09D175/04C09D5/44C09D7/12
Inventor 王水成
Owner 杭州白浪助剂有限公司
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