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UV (ultraviolet) photocuring multifunctional epoxy reactive diluent and preparation method thereof

A multifunctional epoxy, reactive diluent technology, applied in epoxy resin coatings, silicone compounds, coatings, etc., can solve problems such as poor compatibility, poor cured film state, and poor curing effect. Achieve the effects of good compatibility, overcoming poor curing effect, and simple and efficient preparation method

Pending Publication Date: 2021-04-30
安徽格林开思茂光电科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many types of epoxy-based reactive diluents on the market, but the existing epoxy-based reactive diluents have poor compatibility with epoxy-containing organic silicon or organic fluorine-silicon photocurable resins. When it is used in a photocuring system with epoxy group-containing silicone or organofluorosilicon photocurable resin as the main component, there are problems such as poor curing effect and poor state of the cured film

Method used

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  • UV (ultraviolet) photocuring multifunctional epoxy reactive diluent and preparation method thereof
  • UV (ultraviolet) photocuring multifunctional epoxy reactive diluent and preparation method thereof
  • UV (ultraviolet) photocuring multifunctional epoxy reactive diluent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of UV light curing multifunctional epoxy reactive diluent:

[0037] S1. Under the condition of nitrogen gas, mix 1mol tetramethyltetravinylcyclotetrasiloxane, 100ml n-hexane, and 200μg Speier catalyst into the reactor, and add 4mol tetramethyldisiloxane dropwise at 60°C Alkanes, after the dropwise addition, stirred and reacted at 60°C for 5h;

[0038] S2. Add 4 mol of allyl glycidyl ether dropwise to the reaction system obtained in step S1 under the condition of nitrogen flow. After the dropwise addition, stir the reaction at 60°C for 5h, and then reduce the pressure at 100°C and -0.1MPa Distilled for 1h, that is.

[0039] The structural formula of the prepared UV photocuring multifunctional epoxy reactive diluent is as follows:

[0040]

[0041] Preparation of photocurable coatings: the silicone photocurable resin containing epoxy groups, HPF 6 Mix evenly with the above-mentioned UV light-curable multifunctional epoxy reactive diluent in a mass ratio ...

Embodiment 2

[0045] Preparation of UV light curing multifunctional epoxy reactive diluent:

[0046] S1. Under the condition of blowing nitrogen, mix 1mol tetramethyltetravinylcyclotetrasiloxane, 100ml n-hexane, and 200μg Speier catalyst evenly and add them into the reactor, add 4mol terminal hydrogen-containing silicone oil dropwise at 60°C, drop After the addition was complete, the reaction was stirred at 60°C for 5 h;

[0047] S2. Add 4 mol of allyl glycidyl ether dropwise to the reaction system obtained in step S1 under the condition of nitrogen flow. After the dropwise addition, stir the reaction at 60°C for 5h, and then reduce the pressure at 100°C and -0.1MPa Distilled for 1h, that is;

[0048] In S1, the structural formula of the terminal hydrogen-containing silicone oil is as follows:

[0049]

[0050] In the formula, n is 1-1000.

[0051] The structural formula of the prepared UV photocuring multifunctional epoxy reactive diluent is as follows:

[0052]

[0053] In the f...

Embodiment 3

[0058] Preparation of UV light curing multifunctional epoxy reactive diluent:

[0059] S1. Under the condition of blowing nitrogen, mix 1mol tetramethyltetravinylcyclotetrasiloxane, 100ml n-hexane, and 200μg Speier catalyst into the reactor, add dropwise 4mol terminal hydrofluorosilicone oil at 60°C, After the dropwise addition, the reaction was stirred at 60° C. for 5 h;

[0060] S2. Add 4 mol of allyl glycidyl ether dropwise to the reaction system obtained in step S1 under the condition of nitrogen flow. After the dropwise addition, stir the reaction at 60°C for 5h, and then reduce the pressure at 100°C and -0.1MPa Distilled for 1h, that is;

[0061] In S1, the structural formula of the end-containing hydrofluorosilicone oil is as follows:

[0062]

[0063] In the formula, n is 1-1000.

[0064] The structural formula of the prepared UV photocuring multifunctional epoxy reactive diluent is as follows:

[0065]

[0066] In the formula, n is 1-1000.

[0067] Preparat...

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Abstract

The invention discloses a UV photocuring multifunctional epoxy reactive diluent and a preparation method thereof. The preparation method comprises the following steps: under the protection of inert gas, mixing tetramethyl tetravinyl cyclotetrasiloxane, an organic silicon end-capping reagent and a catalyst to carry out hydrosilylation reaction, and after the reaction is finished, adding allyl glycidyl ether to carry out hydrosilylation reaction to obtain the UV photocuring multifunctional epoxy reactive diluent. The preparation method has the advantages that the preparation method is simple and efficient, and the prepared UV photocuring multifunctional epoxy reactive diluent can greatly improve the curing rate of cationic photocuring and is particularly suitable for a photocuring system taking epoxy group-containing organic silicon or organic fluorine-silicon photocuring resin as a main component.

Description

technical field [0001] The invention relates to the technical field of organic synthesis, in particular to a UV photocurable multifunctional epoxy reactive diluent and a preparation method thereof. Background technique [0002] UV-curable coating is an environmentally friendly coating based on ultraviolet radiation curing technology. Under the irradiation of ultraviolet light, it can be cross-linked and cured in a short time to form a coating with excellent mechanical properties. Compared with traditional solvent-based coatings, UV-curable coatings have less emission of organic volatile components, and have the advantages of environmental protection and energy saving. [0003] At present, UV curing methods can be roughly divided into two categories: free radical photocuring and cationic photocuring according to the curing mechanism. Among them, compared with the free radical photocurable system, the cationic photocurable system has the advantages of being less susceptible t...

Claims

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Application Information

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IPC IPC(8): C08G77/38C09D183/06C09D163/00C07F7/21
CPCC08G77/38C09D183/06C09D163/00C07F7/21C08L2205/025
Inventor 江逸民钟永旺
Owner 安徽格林开思茂光电科技股份有限公司
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