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.
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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
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
Industrial products
121.2
Industrial products
0.08
Propylene glycol phenyl ether
Industrial products
22.5
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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