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Vegetable oleic acid modified epoxy resin and preparation method thereof, polymer containing vegetable oleic acid modified epoxy resin, and preparation method and application of polymer

A technology of vegetable oleic acid and epoxy resin, applied in the field of resin, can solve the problems of low production efficiency, long production time, unsatisfactory and the like

Active Publication Date: 2015-06-17
NIPPON PAINT GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that other properties of the cured film, especially corrosion resistance, are not satisfactory
And the cost of using these modified epoxy resins is higher
[0005] In addition, because the traditional cathodic electrophoretic paint emulsion uses a large amount of ketone raw materials in its preparation, the residue of ketone raw materials in the emulsion will affect the appearance of the emulsion coating film, increase the emission of VOC and affect the storage stability of the emulsion
Therefore, a solvent removal process is required after emulsification, which in turn leads to long production time and low production efficiency

Method used

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  • Vegetable oleic acid modified epoxy resin and preparation method thereof, polymer containing vegetable oleic acid modified epoxy resin, and preparation method and application of polymer
  • Vegetable oleic acid modified epoxy resin and preparation method thereof, polymer containing vegetable oleic acid modified epoxy resin, and preparation method and application of polymer
  • Vegetable oleic acid modified epoxy resin and preparation method thereof, polymer containing vegetable oleic acid modified epoxy resin, and preparation method and application of polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] 1. Preparation of vegetable oleic acid modified epoxy resin

[0094] 1. Formula

[0095] name

Specification

weight

epoxy resin

Industrial product (equivalent 190g / mol)

901.5

Bisphenol A

Industrial products

312.5

N,N-Dimethylbenzylamine

Industrial products

0.1

soy oleic acid

Industrial products

151.3

Ethylene glycol butyl ether

Industrial products

52

[0096] 2. Operation process: Add 901.5g of epoxy resin, 312.5g of bisphenol A, 151.3g of soybean oil, and 52g of butyl glycol to a three-necked flask equipped with a stirrer, condenser, and thermometer, and raise the temperature under nitrogen protection Add 0.1 g of N,N-dimethylbenzylamine at 100°C, continue to heat up to 140-150°C, and react for 3-4 hours. Reaction endpoint control detection epoxy equivalent> 1153g / mol is qualified. Obtain light yellow vegetable oleic acid modified epoxy resin, its molecular weight and...

Embodiment 2

[0139] 1. Preparation of vegetable oleic acid modified epoxy resin

[0140] 1. Recipe

[0141] name

Specification

weight

epoxy resin

Industrial product (equivalent 190g / mol)

940

Bisphenol A

Industrial products

325

Tetramethylammonium Chloride

Industrial products

0.075

Linoleic acid

Industrial products

150

Propylene Glycol Phenyl Ether

Industrial products

50

[0142] 2. Operation process: In a three-necked flask equipped with a stirrer, a condenser and a thermometer, add 940 g of epoxy resin, 325 g of bisphenol A, 150 g of linoleic acid, and 50 g of propylene glycol phenyl ether, and heat it to 100 °C under nitrogen protection. 0.075 g of tetramethylammonium chloride, continue to heat up to 140-150° C., and react for 3-4 hours. Reaction endpoint control detection epoxy equivalent>1153g / mol is qualified. A dark yellow linoleic acid modified epoxy resin was obtained, and its mol...

Embodiment 3

[0165] Same as Example 1, the difference is:

[0166] In the preparation of vegetable oleic acid modified epoxy resin:

[0167] The epoxy resin is a bisphenol A type epoxy resin, and the epoxy equivalent is 180 g / mol;

[0168] The vegetable oleic acid is a fatty acid with one or more unsaturated double bonds;

[0169] The basic catalyst is triethylamine;

[0170] The inert solvent is an alcohol solvent.

[0171] The results were similar to Example 1.

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Abstract

The invention discloses a vegetable oleic acid modified epoxy resin. The invention also discloses a preparation method for the vegetable oleic acid modified epoxy resin, a polymer containing the vegetable oleic acid modified epoxy resin, and a preparation method and application of the polymer. According to the invention, since vegetable oleic acid with an unsaturated double bond is introduced into the epoxy resin, post-curing of the unsaturated double bond improves comprehensive properties of a paint film. The polymer of the invention is applied in a cathodic electrophoretic coating material, and a formed coating has the characteristics of good flexibility, good leveling property, high gloss, low curing temperature, good corrosion resistance, etc., can be cured at 140 to 160 DEG C and is low in cost; and products using the coating has good storage stability.

Description

technical field [0001] The present invention relates to the field of resins. More specifically, it relates to a vegetable oleic acid-modified epoxy resin and a preparation method, a polymer containing the resin, a preparation method and an application thereof. Background technique [0002] Cathodic electrophoretic coatings have high throwing power and coulombic efficiency, the bath liquid is relatively stable and easy to control, and is not easily affected by impurity ions and microorganisms to deteriorate. It has gradually replaced anodic electrophoretic coatings as the main automotive primer coatings. Cathodic electrophoretic coatings have the characteristics of high corrosion resistance, good decoration, environmental protection and safety, and no corrosion to metal substrates, and are widely used in metal surface coating treatment. Especially since the cathodic electrophoretic coating is based on an alkaline polymer resin with an amine group and has the function of corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/16C08G59/20C08G59/56C08G18/83C09D163/10C09D5/44C09D5/08C07D251/34
Inventor 李世冰唐晓冬施珠容
Owner NIPPON PAINT GUANGZHOU
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