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Aryl silicate ester flame retardant plasticizer and preparation method thereof

A technology of flame retardant plasticizer and aryl silicate, which is applied in the direction of silicon organic compounds, can solve problems such as processing problems that limit the development of polysilicon industry, unsynchronized development, waste of resources and the environment, and achieve good application prospects. Good solubility and plasticity, good thermal stability, high flame retardant effect

Inactive Publication Date: 2011-05-11
李兰敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production process of polysilicon, a large amount of by-product silicon tetrachloride will inevitably be produced, and the related supporting facilities for processing silicon tetrachloride have not been developed synchronously, resulting in serious waste of resources and environmental pollution.
Therefore, the problem of dealing with the by-product silicon tetrachloride limits the development of the polysilicon industry

Method used

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  • Aryl silicate ester flame retardant plasticizer and preparation method thereof
  • Aryl silicate ester flame retardant plasticizer and preparation method thereof
  • Aryl silicate ester flame retardant plasticizer and preparation method thereof

Examples

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Comparison scheme
Effect test

preparation example 1

[0020] Preparation Example 1 In a 150ml four-necked bottle equipped with a stirrer, a thermometer, a high-efficiency reflux condenser and a hydrogen chloride absorption device connected to the upper mouth of the condenser, nitrogen protection was introduced, 0.1mol of silicon tetrachloride was added, and the liquid was started at 20°C. Add 0.1mol benzyl alcohol dropwise under the surface, and the reaction will release hydrogen chloride. After the hydrogen chloride is released, replace the upper port of the condenser tube with an extremely flexible and expandable soft seal, stir, and start to introduce 0.3mol epoxy under the liquid surface at 20°C. Ethane was cooled in an ice-water bath, and the temperature was controlled at the rate of introduction. After the passage, the temperature was maintained at about 20°C for 4 hours, and then the temperature was raised to 40°C for half an hour. Heat and reduce pressure to distill off excess reactants and low boiling point substances and...

preparation example 2

[0021] Preparation Example 2 In a 150ml four-necked bottle equipped with a stirrer, a thermometer, a high-efficiency reflux condenser and a hydrogen chloride absorption device connected to the upper mouth of the condenser, nitrogen protection was introduced, 0.1mol of silicon tetrachloride was added, and the liquid was started at 20°C. Add 0.1mol of benzyl alcohol dropwise under the surface, and the reaction will release hydrogen chloride. After the hydrogen chloride is released, replace the upper port of the condenser tube with an extremely flexible and expandable soft seal, stir, and start to drop 0.4mol of epoxy under the liquid surface at 20°C. Propane, cooled in an ice-water bath, and the temperature was controlled by the dropping rate. After the dropping, the temperature was maintained at about 20°C for 8 hours, and then the temperature was raised to 40°C for 1 hour. Heat and reduce pressure to distill off excess reactants and low boiling point substances and recycle them...

preparation example 3

[0022] Preparation Example 3 In a 150ml four-necked bottle equipped with a stirrer, a thermometer, a high-efficiency reflux condenser and a hydrogen chloride absorption device connected to the upper mouth of the condenser, nitrogen protection was introduced, 0.1mol of silicon tetrachloride was added, and the liquid was started at 20°C. Add 0.1mol of benzyl alcohol dropwise under the surface, and the reaction will release hydrogen chloride. After the hydrogen chloride is released, add 0.4mol of epichlorohydrin dropwise under the liquid surface (gradually increase the temperature as the reaction progresses), maintain the temperature at about 90°C, and react for another 8 hours Afterwards, excessive reactants and low boiling point substances were distilled off under reduced pressure and recycled for use, and tris(dichloropropyl)benzyl silicate was obtained by filtration, with a yield of 95%, a decomposition temperature of 264±5°C, and a flash point of (open cup) is 231±5°C, the de...

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Abstract

The invention relates to an aryl silicate ester flame retardant plasticizer and a preparation method thereof. The structure of the compound is expressed with a general formula shown in the specification, wherein R is phenyl, tolyl and benzyl, R' is hydrogen and methyl, and R'' is hydrogen and methyl or chloromethyl. The preparation method comprises the following steps: using nitrogen to protect, and reacting silicon tetrachloride with a hydroxyl compound with an aryl having the same molar ratio as that of the silicon tetrachloride to release hydrogen chloride, and then with alkylene oxide with a certain molar ratio to obtain a target product. The target product also can be obtained through changing the feeding sequence. The compound has the advantages of stable physical and chemical properties, high flame retardant performance, good plasticity, simple process and easiness of large-scale production.

Description

technical field [0001] The invention relates to an aryl silicate flame retardant plasticizer and a preparation method thereof, in particular to an aryl silicic acid prepared from silicon tetrachloride, a hydroxyl compound with an aryl group and an alkylene oxide as raw materials An ester flame-retardant plasticizer and a preparation method thereof, the compound is a silicon-halide synergistic flame-retardant plasticizer, and can be used as a flame-retardant plasticizer for polyvinyl chloride, polyester, polyurethane, epoxy resin, glass fiber reinforced plastic resin, coatings, and the like. Background technique [0002] With the large-scale development and utilization of new energy solar energy, the use of polysilicon as a raw material for photovoltaic cells is becoming more and more extensive, and the consumption is also increasing. In recent years, my country's polysilicon industry has developed rapidly. However, in the production process of polysilicon, a large amount of ...

Claims

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Application Information

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IPC IPC(8): C08K5/5415C07F7/06C07F7/04C08L27/06
Inventor 王彦林刁建高王乐然
Owner 李兰敏
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