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Dimethyl silicon acid dihalogen propyl ester compound serving as flame resistant plastifier and preparation method of dimethyl silicon acid dihalogen propyl ester compound

A technology of dihalopropyl dimethyl silicate and flame retardant plasticizer, applied in the field of flame retardant plasticizer, can solve problems such as application limitations, achieve simple equipment, good economic and environmental benefits, and good compatibility Effect

Active Publication Date: 2015-06-17
HUZHOU RUIGAO NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, halogenated flame retardants are one of the organic flame retardants with the largest output in the world, but their application in some fields is limited due to the release of harmful gases during combustion.

Method used

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  • Dimethyl silicon acid dihalogen propyl ester compound serving as flame resistant plastifier and preparation method of dimethyl silicon acid dihalogen propyl ester compound
  • Dimethyl silicon acid dihalogen propyl ester compound serving as flame resistant plastifier and preparation method of dimethyl silicon acid dihalogen propyl ester compound
  • Dimethyl silicon acid dihalogen propyl ester compound serving as flame resistant plastifier and preparation method of dimethyl silicon acid dihalogen propyl ester compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 In a 250ml four-necked bottle equipped with a stirrer, a thermometer and a condenser, and a drying tube at the top of the condenser, replace the air in the bottle with nitrogen, and add 6.45g (0.05mol) of dimethyl Dichlorosilane, 65ml of dioxane and 9.25g (0.1mol) of epichlorohydrin, heated up to 100°C, kept warm for 8h; distilled under reduced pressure to remove solvent and a small amount of low-boiling matter to obtain dichloropropane dimethyl silicate Esters, yield 86.9%.

Embodiment 2

[0028] Example 2 In a 250ml four-necked bottle equipped with a stirrer, a thermometer and a condenser tube, and a drying tube on the top of the condenser tube, replace the air in the bottle with nitrogen, and add 6.45g (0.05mol) of dimethyl Dichlorosilane, 40ml of acetonitrile and 10.18g (0.11mol) of epichlorohydrin were heated up to 70°C and kept for 13 hours of reaction; the solvent, excess epichlorohydrin (recycled) and a small amount of low boiling point were removed by distillation under reduced pressure to obtain Dichloropropyl dimethyl silicate, yield 84.1%.

Embodiment 3

[0029] Example 3 In a 250ml four-necked bottle equipped with a stirrer, a thermometer and a condenser tube, and a drying tube on the top of the condenser tube, replace the air in the bottle with nitrogen, and add 6.45g (0.05mol) of dimethyl Dichlorosilane, 20ml diethylene glycol dimethyl ether, and 11.57g (0.125mol) epichlorohydrin, heated up to 110°C, and kept warm for 5h; the solvent, excess epichlorohydrin (recycled) and A small amount of low-boiling matter was used to obtain dichloropropyl dimethyl silicate with a yield of 91.2%.

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Abstract

The invention relates to a dimethyl silicon acid dihalogen propyl ester compound serving as a flame resistant plastifier anda preparation method of the dimethyl silicon acid dihalogen propyl ester compound. The structure of the compound is shown in the formula, wherein ClXC3H5O is CH2ClCHXCH2O or (CH2Cl)(CH2X)CHO,X=Cl or Br. The preparation method comprises the following steps: dissolving dimethyl dihalogen silicon alkane in an organic solvent, adding epoxy chloropropane of which the mol is 2-3 times of that of the dimethyl dihalogen silicon alkane, performing temperature rise to enable the temperature to be 70-110 DEG C, performing a heat preservation reaction for 5-13 hours, and performing purification so as to obtain the dimethyl silicon acid dihalogen propyl ester. The dimethyl silicon acid dihalogen propyl ester disclosed by the invention is high in flame resistant efficacy, is good in plasticity, and is suitable for being used as a flame resistant plastifier of a polyvinyl chloride, polyurethane, an epoxy resin, an unsaturated resin and the like. The production technology is simple, the cost is low, and the industrialized production is easy to realize.

Description

technical field [0001] The invention relates to a silicon and halogen synergistic flame retardant plasticizer dihalopropyl dimethyl silicate compound and a preparation method thereof. The compound is suitable for use as a compound for polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin, etc. Flame retardant plasticizer. Background technique [0002] With the continuous development of my country's social economy and the rapid growth of social wealth, the rapid development of electronic appliances, high-rise buildings and other fields, the incidence of fires has increased, causing huge losses of life and property, thus promoting the rapid development of flame retardant science and industry. develop. At present, halogenated flame retardants are one of the most produced organic flame retardants in the world, but their application in some fields is limited due to the release of harmful gases when burned. At the same time, in terms of overall cost performance, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C08K5/5419C08L27/06
Inventor 王彦林杨海军
Owner HUZHOU RUIGAO NEW MATERIALS CO LTD
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