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Resin for water-soluble anode electrophoretic paint and preparation method of resin

A kind of anodic electrophoretic paint, water-soluble technology, applied in the field of resin, can solve the problems of high raw material and production costs, unpainted paint, too thick paint film, etc., to achieve the effect of eliminating poisoning, improving paint quality, and reducing operators

Active Publication Date: 2012-12-05
山东奔腾漆业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: there are shortcomings of too thick paint film or no paint on the concave-convex corners and shaded parts; moreover, it will cause certain pollution during the production process, and the cost of raw materials and production is also high

Method used

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  • Resin for water-soluble anode electrophoretic paint and preparation method of resin
  • Resin for water-soluble anode electrophoretic paint and preparation method of resin
  • Resin for water-soluble anode electrophoretic paint and preparation method of resin

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preparation example Construction

[0028] The preparation method of described water-soluble anodic electrophoretic paint resin comprises the following steps:

[0029] 1) Condensation reaction: 56-63 parts of cardanol are put into a stainless steel reaction kettle with a condenser, then 7-12 parts of formaldehyde with a concentration of 37%, 1.9-2.6 parts of hexamethylenetetramine, 3 part of toluene, seal the feeding port, open the vent valve, pass nitrogen, heat up and stir, adjust the pH value to 8-8.5, the condensation reaction temperature is 65-140°C, turn off the nitrogen, measure the viscosity in the central control, 25°C water bath format viscosity When it reaches 14-16 seconds, it is the end point of condensation, and the stirring is stopped;

[0030] The suitable temperature for the condensation reaction is 65-140°C, and the suitable pH value is 8-8.5. If the pH value is low, the condensation reaction is slow, and the resin is not easy to be transparent; if the pH value is high, the condensation reacti...

Embodiment 1

[0036] 57 parts of cardanol are dropped into a stainless steel reactor with a condenser, then 12 parts of formaldehyde with a concentration of 37%, 2.6 parts of hexamethylenetetramine (preferably hexamethylenetetramine and formaldehyde are miscible Then add to the reaction kettle), 3 parts of toluene (additional), seal the feeding port, open the vent valve, pass nitrogen, heat up and stir, adjust the pH value to 8-8.5, and pay attention to the expansion of the pot at 100±2°C , turn off the nitrogen at 120°C, and after 15 minutes at 138±2°C, measure the viscosity in the central control (resin: D 40 =8:2, Grignard tube / 25°C), the condensation end point is when the viscosity reaches 14-16 seconds in a water bath at 25°C; stop stirring, quickly add 8 parts of maleic anhydride, keep warm at 150°C for 20-30 minutes, and cool down Add 15 parts of butanol below 110°C, add 5.4 parts of monoethanolamine below 100°C, adjust the pH value to 8-8.5, stir for 20-30 minutes, and pack for late...

Embodiment 2

[0038] 63 parts of cardanol are dropped into a stainless steel reaction kettle with a condenser, then 7 parts of formaldehyde with a concentration of 37%, 1.9 parts of hexamethylenetetramine (preferably hexamethylenetetramine and formaldehyde are well miscible) Then add to the reaction kettle), 3 parts of toluene (additional), seal the feeding port, open the vent valve, pass nitrogen, heat up and stir, adjust the pH value to 8-8.5, and pay attention to the expansion of the pot at 100±2°C , turn off the nitrogen at 120°C, and after 15 minutes at 138±2°C, measure the viscosity in the central control (resin: D 40 =8:2, Grignard tube / 25°C), the condensation end point is when the viscosity reaches 14-16 seconds in a water bath at 25°C; stop stirring, quickly add 5 parts of maleic anhydride, keep warm at 150°C for 20-30 minutes, and cool down Add 18 parts of butanol below 110°C, add 5.1 parts of monoethanolamine below 100°C, adjust the pH value to 8-8.5, stir for 20-30 minutes, and ...

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Abstract

The invention relates to resin for water-soluble anode electrophoretic paint. The resin comprises raw materials in following weight parts: 56-63 parts of anacardol, 7-12 parts of formaldehyde with 37% concentration, 1.9-2.6 parts of hexamine, 5-8 parts of maleic anhydride, 10-18 parts of butanol, 4.5-5.5 parts of monoethanolamine and 3 parts of toluene. The preparation method includes firstly condensing the anacardol and the formaldehyde to react until central control is qualified under the action of hexamine catalyst; secondly, subjecting the maleic anhydride to addition; and thirdly, neutralizing to obtain water-soluble resin with the monothanolamine. The resin for water-soluble anode electrophoretic paint has the advantages of high rigidity, impact resistance and fine elasticity, quality of the paint can be improved, binding force of paint film is high, members in various geometric shapes can be uniformly painted, pollution can be reduced, and cost can be saved.

Description

technical field [0001] The invention relates to a resin, in particular to a resin for water-soluble anodic electrophoretic paint, and also relates to a preparation method of the above-mentioned resin for water-soluble anodic electrophoretic paint. Background technique [0002] Water-soluble anodic electrophoretic paint is a paint variety that appeared in developed countries in the early 1960s, and was produced in some paint factories in my country after the 1970s. Because it has advantages that other coatings do not have, it is widely used in automobiles, agricultural machinery, bicycles, textile machinery, hardware and iron products. [0003] The resins currently used in anodic electrophoretic paints include: epoxy esters, phenolic resins, polybutadiene, etc. But the current offering leaves some deficiencies. For example, there are disadvantages of too thick paint film or no paint on the concave and convex corners and shielding parts; moreover, it will cause certain pollu...

Claims

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Application Information

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IPC IPC(8): C08G8/30C09D161/14C09D5/44
Inventor 张庆忠
Owner 山东奔腾漆业股份有限公司
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