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Preparation process of phenylcarbamido silane coupling agent

A phenylureido silane coupling agent and a preparation technology, which is applied in the field of silane coupling agent preparation, can solve the problems of high impurities, low purity and low yield of phenylureido silane coupling agent, etc. question

Pending Publication Date: 2021-09-10
安徽沸点新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the phenylureidosilane coupling agent prepared by the prior art has the problems of low yield and serious waste of raw materials
Moreover, the prepared phenylureidosilane coupling agent also has relatively many impurities and relatively low purity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of preparation technology of phenylureido silane coupling agent, comprises the following steps:

[0039] 1. Preparation of reactants;

[0040] According to the molar ratio of 1:10, weigh an appropriate amount of (3-chloropropyl)diethoxymethylsilane and organic amine and put them into the reaction kettle; start the stirrer, and raise the temperature in the kettle to 110 ℃, heat preservation reaction for 2 hours; after the reaction is completed, the residual organic amine is recovered by vacuum distillation, and then the mixed components in the reactor are naturally cooled to room temperature, and then filtered, vacuum distillation and over-adsorption are sequentially carried out After the column is processed; the obtained reactant is reserved for subsequent use;

[0041] Two, the preparation of the crude product of phenylureidosilane coupling agent;

[0042] Put the obtained reactant and N-methyl-2-pyrrolidone into the reaction kettle at a ratio of 1:10, and mec...

Embodiment 2

[0060] A kind of preparation technology of phenylureido silane coupling agent, comprises the following steps:

[0061] 1. Preparation of reactants;

[0062] According to the molar ratio of 1:12, weigh an appropriate amount of (3-chloropropyl)diethoxymethylsilane and organic amine and put them into the reaction kettle; start the stirrer, and raise the temperature in the kettle to 120 ℃, heat preservation reaction for 3 hours; after the reaction is completed, the residual organic amine is recovered by vacuum distillation, and then the mixed components in the reactor are naturally cooled to room temperature, and then filtered, vacuum distillation and over-adsorption are sequentially carried out After the column is processed; the obtained reactant is reserved for subsequent use;

[0063] Two, the preparation of the crude product of phenylureidosilane coupling agent;

[0064] Put the obtained reactant and N-methyl-2-pyrrolidone into the reaction kettle according to the ratio of s...

Embodiment 3

[0082] A kind of preparation technology of phenylureido silane coupling agent, comprises the following steps:

[0083] 1. Preparation of reactants;

[0084] According to the molar ratio of 1:15, weigh an appropriate amount of (3-chloropropyl)diethoxymethylsilane and organic amine and put them into the reaction kettle; start the stirrer, and raise the temperature in the kettle to 130 ℃, heat preservation reaction for 4 hours; after the reaction is completed, the residual organic amine is recovered by vacuum distillation, and then the mixed components in the reactor are naturally cooled to room temperature, and then filtered, vacuum distillation and over-adsorption are sequentially carried out After the column is processed; the obtained reactant is reserved for subsequent use;

[0085] Two, the preparation of the crude product of phenylureidosilane coupling agent;

[0086] The obtained reactant and N-methyl-2-pyrrolidone are put into the reaction kettle according to the ratio ...

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Abstract

The invention relates to the technical field of preparation of silane coupling agents, in particular to a preparation process of a phenylcarbamido silane coupling agent. According to the preparation method, (3-chloropropyl) diethoxymethylsilane and organic amine are used as raw materials for preparing a reactant, the prepared reactant and N-methyl-2-pyrrolidone are subjected to a chemical reaction under the action of a mixed solution composed of a phenyl isocyanate compound and N-methyl-2-pyrrolidone, and finally, a silane coupling agent crude product with high yield and high purity is generated. Not only is the waste of reaction raw materials effectively reduced, but also the purity of the finally prepared phenylcarbamido silane coupling agent is ensured. Then, separation and purification are carried out through an efficient adsorbent, so that the purity of the finally prepared phenylcarbamido silane coupling agent is higher, and the quality of the prepared phenylcarbamido silane coupling agent is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of preparation of silane coupling agents, in particular to a preparation process of phenylureidosilane coupling agents. Background technique [0002] Silane coupling agents are mainly used in glass fiber reinforced plastics. The molecular structure formula of silane coupling agent is generally: Y-R-Si(OR) 3 (where Y is an organofunctional group, SiOR is a siloxyl group). Siloxyl groups are reactive towards inorganics and organofunctional groups are reactive or compatible with organics. Therefore, when the silane coupling agent is interposed between the inorganic and organic interfaces, a bonding layer of organic matrix-silane coupling agent-inorganic matrix can be formed. [0003] Compared with traditional silane coupling agents, phenylurea-based silane coupling agents have the characteristics of safe use, mild reaction, strong binding force, and good bonding performance. They are mainly used as additives...

Claims

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Application Information

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IPC IPC(8): C07F7/18
CPCC07F7/1804C07F7/1892
Inventor 席日勇孙兆贵
Owner 安徽沸点新材料有限公司
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