Brominated epoxy resin as well as preparation method and application thereof

A technology of brominated epoxy resin and epoxy resin, applied in the field of polymer material synthesis, can solve the problem of not having improved stability, and achieve improved heat resistance and flame retardant performance, low impurity residue, and excellent performance. Effect

Active Publication Date: 2021-08-27
JIANGSU YANGNONG CHEM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The focus of this method improvement is to improve the glass transition temperature of brominated epoxy resin through the use of high-purity epoxy resin, and does not involve the adjustment of resin adhesion and flame ret

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0060] The specific embodiment of the present invention provides a brominated epoxy resin and its preparation method and use, and the preparation method comprises the following steps:

[0061] (1) mixing bisphenol A epoxy resin, tetrabromobisphenol A and functional epoxy resin, heating and melting under protective gas conditions, then mixing with catalyst, and reacting after heating to obtain a reaction intermediate;

[0062] (2) mixing the reaction intermediate obtained in step (1) with bisphenol A epoxy resin, heating up again and reacting, and obtaining the brominated epoxy resin after cooling down.

Example Embodiment

[0064] Example 1:

[0065] The present embodiment provides a preparation method of a brominated epoxy resin, and the preparation method comprises the following steps:

[0066] (1) Mix bisphenol A epoxy resin, tetrabromobisphenol A and functional epoxy resin, the molecular weight of the bisphenol A epoxy resin is 400, and the functional epoxy resin is bisphenol A Type phenolic epoxy resin, the mass ratio of the bisphenol A type epoxy resin and tetrabromobisphenol A is 1.5:1, and the addition amount of the functional epoxy resin is 3.6wt% of the mass of tetrabromobisphenol A , heated and melted under argon conditions, the heating temperature was 80 ° C, and the time was 30 min. After the solid was completely dissolved, it was mixed with the catalyst bromobutyltriphenylphosphine, and the addition amount of the catalyst was the quality of tetrabromobisphenol A. 0.1 wt % of , the temperature of the reaction is 160 ° C, the pressure is -0.085 MPa, the time is 2 h, and the temperatu...

Example Embodiment

[0069] Example 2:

[0070] The present embodiment provides a preparation method of a brominated epoxy resin, and the preparation method comprises the following steps:

[0071](1) Mix bisphenol A epoxy resin, tetrabromobisphenol A and functional epoxy resin, the molecular weight of the bisphenol A epoxy resin is 360, and the functional epoxy resin is a tetrafunctional ring Oxygen resin, the mass ratio of the bisphenol A epoxy resin and tetrabromobisphenol A is 1.2:1, and the addition amount of the functional epoxy resin is 3wt% of the mass of tetrabromobisphenol A, under nitrogen conditions Under heating and melting, the heating temperature is 90 ° C, and the time is 20 min. After the solid is completely dissolved, it is mixed with the catalyst tetrabutylammonium bromide. The addition amount of the catalyst is 0.085wt% of the mass of tetrabromobisphenol A. Post-reaction, the temperature of the reaction is 180°C, the pressure is -0.09MPa, the time is 3h, and the temperature is ...

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Abstract

The invention provides brominated epoxy resin and a preparation method and an application thereof, the preparation method comprises the following steps: mixing bisphenol A epoxy resin, tetrabromobisphenol A and functional epoxy resin, heating and melting under the condition of protective gas, then mixing with a catalyst, heating and reacting to obtain a reaction intermediate; and mixing the obtained reaction intermediate with bisphenol A epoxy resin, heating and reacting again, and cooling to obtain the brominated epoxy resin. The preparation of the brominated epoxy resin is carried out in two steps, the raw materials are added in batches, and the polycondensation reaction is carried out after the intermediate is generated, so that the molecular weight of the product is favorably adjusted, the reaction process is stable, and the reaction endpoint is easy to control; according to the method, by adding the functional epoxy resin, the bromine content of the brominated epoxy resin can be reduced, but the cohesiveness of the brominated epoxy resin can still be ensured, meanwhile, the heat resistance and flame retardance of the brominated epoxy resin are improved, and the impurity residual quantity is low; the method is simple in preparation process, safe and controllable, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer material synthesis, and relates to a brominated epoxy resin and its preparation method and application. Background technique [0002] Copper-clad laminate, also known as copper-clad laminate, is a product made of electronic glass fiber cloth as a reinforcing material, impregnated with resin, coated with copper foil on one or both sides and hot-pressed. It is a product in the electronics industry. The basic material is mainly used in the manufacture of printed circuit boards. As one of the important components for the preparation of flame-retardant copper-clad laminates, brominated epoxy resin is a new type of epoxy resin developed in recent years. Its molecular structure contains bromine, which not only has the excellent electrical insulation properties of general epoxy resin Adhesive, and also has excellent flame retardancy; since brominated epoxy resin does not produce dioxins, it has become on...

Claims

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Application Information

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IPC IPC(8): C08G65/28
CPCC08G65/2612C08G65/2672C08G65/2675C08G65/2696
Inventor 徐林黄杰军刘红红丁克鸿钱赟李幸霏邓小伟
Owner JIANGSU YANGNONG CHEM GROUP
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