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Synthetic method of modified bisphenol A epoxy acrylate resin

A technology of epoxy acrylate and synthesis method, applied in the field of resin synthesis, can solve the problems of poor fluidity, high viscosity, and increase flexibility, and achieve the effects of improving flexibility, reducing viscosity, and expanding application fields

Inactive Publication Date: 2013-10-02
WUXI JINSHENG AUX FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its main disadvantages are: First, bisphenol A epoxy acrylate has a high viscosity, basically 5,000-10,000 cps (60°C), and has poor fluidity at room temperature, almost solid
Common methods such as introducing fatty acid modified epoxy acrylate to improve flexibility; or using epoxy soybean oil to synthesize epoxy soybean oil acrylate to reduce viscosity and increase flexibility; and first use dibasic anhydrides (such as phthalic anhydride ) react with hydroxyethyl acrylate and then react with epoxy resin to prepare conventional methods such as modified epoxy acrylate, but none of the above three problems can be solved well.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Preparation of bisphenol A epoxy acrylate

[0018] First, 660g of bisphenol A epoxy resin (epoxy equivalent 185-195g / eq, purchased from Jiangsu Sanmu Chemical Co., Ltd.), 240g of acrylic acid, 2.7g of catalyst triethylamine, and 3g of polymerization inhibitor p-hydroxyanisole were all added to the reaction Inside the cauldron. After all the raw materials are put in, start stirring, adjust the stirring speed at 80-100 rpm, start to slowly raise the temperature, and raise the temperature to 115°C in about 1 hour. Then keep it at 115-120°C for 5 hours, and check the acid value after the end of the heat preservation. When the acid value is less than 5mgKOH / g, you can turn on the cooling water raft to cool down and drop to 80°C for discharging. The acid value in the present invention refers to the mg value of potassium hydroxide required to neutralize 1g of the sample.

Embodiment 2

[0019] The preparation of embodiment two modified bisphenol A epoxy acrylate

[0020] Mix 470g of bisphenol A epoxy resin (epoxy equivalent 185-195g / eq) and 200g of carboxyl-terminated polyether (carboxyl-terminated propylene glycol polyether (CTPE), molecular weight 1000-3200, functionality 1.9, acid value 60-120mgKOH / g) into the reaction vessel, and add 2.1kg of catalyst tetrabutylammonium bromide, 1.2kg of polymerization inhibitor p-hydroxyanisole, start stirring and raise the temperature to the reaction temperature of 110°C, react for 1 to 2 hours, when the acid After the value is less than 1, add 68g of acrylic acid, and then keep it warm at 115°C for 3-5 hours, when the acid value is less than 5.

Embodiment 3

[0021] Embodiment three preparation of modified bisphenol A epoxy acrylate

[0022] Add 470g of bisphenol A epoxy resin (epoxy equivalent 185-195g / eq) and carboxyl-terminated polyether 300g (acid value 60-120mgKOH / g) into the reaction vessel, and add 2.4kg of catalyst triethylamine, Polymerizing agent p-hydroxyanisole 1.2kg, start stirring and heat up to reaction temperature 100°C, react for 1-2 hours, when the acid value is less than 1, then add 230g of acrylic acid, then keep warm at 100°C for 3-5 hours, when the acid The value is less than 5.

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PUM

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Abstract

The invention discloses a synthetic method of a modified bisphenol A epoxy acrylate resin. The synthetic method comprises following steps: bisphenol A epoxy resin, carboxy-terminated polyether, a catalyst and a polymerization inhibitor are mixed and heated, the mixture is reacted for 1 to 2h at a temperature of 100 to 120 DEG C, acrylic acid is added into the mixture, the temperature is kept at 100 to 120 DEG C for 3 to 5h, and then the modified bisphenol A epoxy acrylate resin is obtained, wherein the amount of carboxy-terminated polyether is 0.4 to 0.8 time of the amount of bisphenol A epoxy resin by weight, and the amount of acrylic acid is 10 to 30% of the total weight of bisphenol A epoxy resin and carboxy-terminated polyether. Flexibility and anti-yellowing performance of the modified bisphenol A epoxy acrylate resin prepared by using the synthetic method are increased; viscosity is reduced; application area is expanded; and the modified bisphenol A epoxy acrylate resin can be used for preparation of light solidified ink, plastic cement coating, and the like.

Description

technical field [0001] The invention belongs to the field of resin synthesis, in particular to a method for synthesizing modified bisphenol A epoxy acrylate. Background technique [0002] The synthesis of epoxy acrylate has been patented as early as the 1950s, but it was not applied to the field of photocuring until the 1970s. Epoxy acrylate is obtained by esterifying commercial epoxy resin with acrylic acid or methacrylate, and is currently the most consumed type of light-curing oligomer in the domestic light-curing industry. According to the structure type, epoxy acrylate is divided into bisphenol A type epoxy acrylate, novolac epoxy acrylate, modified epoxy acrylate and epoxy soybean oil acrylate, among which bisphenol A type epoxy acrylate Esters are used the most. [0003] The molecular structure of bisphenol A epoxy acrylate contains aromatic rings and side hydroxyl groups, which is beneficial to improve the adhesion; in addition, the aromatic ring structure also end...

Claims

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Application Information

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IPC IPC(8): C08G59/14C08G59/17C08G59/68
Inventor 朱仁祖
Owner WUXI JINSHENG AUX FACTORY
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