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Thio salt modified epoxy resin and preparation method and application of thio salt modified epoxy resin

A technology of epoxy resin and salt modification, which is applied in the direction of epoxy resin coatings, anti-corrosion coatings, paints containing biocide, etc., and can solve the problems of reduced corrosion resistance, poor oil resistance, shrinkage cavity, etc.

Inactive Publication Date: 2018-04-20
盐城安诺电泳涂料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the emulsifier remains in the large particle polymer, and when it is finally added to the electrophoretic coating as an additive, it will inevitably bring side effects if it remains in the coating film, such as reducing corrosion resistance, precipitation due to hydrolysis reaction during long-term storage, and poor oil resistance. Obvious defects such as holes

Method used

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  • Thio salt modified epoxy resin and preparation method and application of thio salt modified epoxy resin
  • Thio salt modified epoxy resin and preparation method and application of thio salt modified epoxy resin
  • Thio salt modified epoxy resin and preparation method and application of thio salt modified epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0086] Example 1

[0087] Step 1, prepare preliminary modified epoxy resin

[0088] 1. Formula

[0089] name

Specification

weight

epoxy resin

Industrial product (equivalent 190g / mol)

352.2

Bisphenol A

Industrial products

112.8

2 ethyl 4 methyl imidazole

Industrial products

0.001

Linoleic fatty acid

Industrial products

52.7

MIBK

Industrial products

37

[0090] 2. Operation process: Add 352.2g of epoxy resin, 112.8g of bisphenol A, 52.7g of linoleic fatty acid, and 37g of MIBK to a three-necked flask equipped with a stirrer, conde...

Embodiment 2

[0151] 1. Preparation of preliminary modified epoxy resin

[0152] 1. Formula

[0153] name

Specification

Weight (g)

epoxy resin

Industrial product (equivalent 190g / mol)

352.2

Bisphenol A

Industrial products

121.2

N,N Dimethylbenzylamine

Industrial products

0.08

Propylene glycol phenyl ether

Industrial products

22.5

Ethylene glycol butyl ether

Industrial products

30.5

[0154] 2. Operation process: Add 352.2g of epoxy resin, 121.2g of bisphenol A, 30.5g of ethylene glycol butyl ether, 22.5g of propylene glycol phenyl ether, and nitrogen into a three-necked flask equipped with a stirrer, a condenser, and a thermometer. Under protection, raise the temperature to 100°C, add 0.08g of N,N dimethylbenzylamine, continue to raise the temperature to 140-150°C, and react for 3-4 hours. Reaction endpoint control detection epoxy equivalent> 550g / mol is qualified. Obtain dark yellow linoleic acid ...

Embodiment 3

[0201] Same as Example 1, the difference is:

[0202] In the preparation of preliminary modified epoxy resin:

[0203] Described epoxy resin is bisphenol A type epoxy resin, and epoxy equivalent is 180g / mol;

[0204] The fatty acid is soybean oil;

[0205] The basic catalyst is triethylamine;

[0206] The result is similar to Example 1.

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Abstract

The invention discloses thio salt modified epoxy resin and a preparation method and application of the thio salt modified epoxy resin. The thio salt modified epoxy resin is obtained by modifying epoxyresin by the thio salt; an emulsifier for a core-shell emulsion polymerization reaction is further prepared; and the emulsifier is further applied to an electrophoretic coating. The thio salt modified epoxy resin provided by the invention is used as an emulsifier for the core-shell emulsion polymerization reaction, and the thio salt modified epoxy resin emulsion is designed to participate in thefilm formation of the electrophoretic coating, is completely different from a general emulsifier in structure, does not act as a residual component, and does not have side effects.

Description

technical field [0001] The invention relates to the field of modified epoxy resin synthesis and core-shell emulsion polymerization. More specifically, it relates to a thio-salt-modified epoxy resin and its preparation method, an emulsion of core-shell emulsion polymerization using the self-emulsification technology of the resin and its preparation method, and the application technology of the emulsion in cathodic electrophoretic coatings. Background technique [0002] At present, cathodic electrophoretic coatings have been developed to the fourth generation of products, which are widely used in metal surface coating treatment due to their environmental protection, safety, good decoration, high corrosion resistance, and low overall cost, especially as the main automotive primer coating. It also realizes a wide range of coatings on hardware such as electromechanical and home appliances. At the same time, its application is no longer limited to the anti-corrosion of materials,...

Claims

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Application Information

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IPC IPC(8): C08G59/14C08G59/16C08G59/06C08F283/10C08F220/14C08F212/08C08F220/18C08F220/32C08F222/16C08F222/14C08F2/26C09D151/08C09D163/10C09D5/44C09D5/16C09D5/08
CPCC08F2/26C08F283/105C08G59/066C08G59/1472C08G59/1477C08G59/1483C09D5/08C09D5/1662C09D5/1668C09D5/4415C09D151/08C09D163/10C08L63/10C08L51/08C08F220/1804
Inventor 王磊杨海涛
Owner 盐城安诺电泳涂料科技有限公司
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