Methyltri(2,3-dichloropropoxy)silane compound and preparation method thereof

A technology of methyltrichlorosilane and dichloropropoxy, which is applied in the field of methyltrisilane compound and its preparation, can solve the problems of high price and narrow application range, achieve low cost, no pollution, and simple preparation method Effect

Active Publication Date: 2011-09-07
JIAOSU CHAOSHU INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organosilicon-based flame retardants are expensive and have a narrow range of use, which is restricted.

Method used

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  • Methyltri(2,3-dichloropropoxy)silane compound and preparation method thereof
  • Methyltri(2,3-dichloropropoxy)silane compound and preparation method thereof
  • Methyltri(2,3-dichloropropoxy)silane compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 In a 150ml three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, add 0.2mol (29.9g) of methyltrichlorosilane, and then start to drop 0.6mol (55.5g) of epichlorohydrin at 25°C , control the drop below 60°C within 1 hour, maintain 60°C, and continue the reaction for 28 hours. After the reaction was completed, a small amount of low-boiling matter was distilled off under reduced pressure to obtain oily liquid methyl tris(2,3-dichloropropoxy)silane with a yield of 94%. Its flash point (open cup): 240±5°C, decomposition temperature: 270±5°C, density 1.371g / ml, refractive index n D 25 = 1.4906.

Embodiment 2

[0018] Example 2 In a 150ml three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, add 0.2mol (29.9g) of methyltrichlorosilane, and then start to drop 0.68mol (62.9g) of epichlorohydrin at 25°C , controlled below 60°C within 1h to complete the drop, then raised the temperature to 80°C, and continued the reaction for 23h. After the reaction, excess epichlorohydrin and a small amount of low-boiling matter were distilled off under reduced pressure to obtain oily liquid methyl tris(2,3-dichloropropoxy)silane with a yield of 96%. Its flash point (open cup): 240±5°C, decomposition temperature: 270±5°C, density 1.371g / ml, refractive index n D 25 = 1.4906.

Embodiment 3

[0019] Example 3 In a 150ml three-neck flask equipped with a stirrer, a thermometer, and a reflux condenser, add 0.2mol (29.9g) of methyltrichlorosilane, and then start to drop 0.72mol (66.6g) of epichlorohydrin at 25°C , control the temperature below 60°C within 1h to complete the drop, raise the temperature to 100°C, and continue the reaction for 15h. After the reaction, excess epichlorohydrin and a small amount of low-boiling matter were distilled off under reduced pressure to obtain oily liquid methyl tris(2,3-dichloropropoxy)silane with a yield of 98%. Its flash point (open cup): 240±5°C, decomposition temperature: 270±5°C, density 1.371g / ml, refractive index n D 25 = 1.4906.

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Abstract

The invention relates to a synergetic fire retardant methyltri(2,3-dichloropropoxy)silane compound containing two elements of Si and Cl and a preparation method thereof. The structure of the compound is shown in the specification. The preparation method comprises the following steps of: dropwise adding epichlorohydrin with certain molar ratio into methyl trichlorosilane at 25 DEG C; heating and reacting for a period of time; and distilling a low-boiling-point product out at a reduced pressure to obtain the methyltri(2,3-dichloropropoxy)silane. The methyltri(2,3-dichloropropoxy)silane disclosed by the invention has the advantages of high fire retardant efficiency, high intermiscibility with macromolecule materials, simple production process, less equipment investment and low cost and is easy to realize industrialized production.

Description

technical field [0001] The invention relates to a methyl tris(2,3-dichloropropoxy)silane compound and a preparation method thereof. Methyltris(2,3-dichloropropoxy)silane is a silicon-chlorine dual-element synergistic flame retardant with high flame retardant performance, suitable for flame retardant of polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin, etc. additive. Background technique [0002] With the wide application of polymer materials, because of its flammability, it often causes fires and poses a serious threat to people's lives and property, thus promoting the research of flame retardant technology and the rapid development of flame retardant industry. Due to the advancement of science and technology and the improvement of people's living standards, the requirements for flame retardants are also getting higher and higher. At present, flame retardants with low toxicity, high efficiency and low price are the urgent need and demand of the market. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C08K5/5419
Inventor 王彦林周中凯韦春胜
Owner JIAOSU CHAOSHU INFORMATION TECH CO LTD
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