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Novel coordinate flame retardant compound of three elements silicon, chlorine and bromine, and preparation method thereof

A technology of synergistic flame retardancy and three elements of silicon and halogen, which is applied in the direction of silicon organic compounds, can solve the problems such as difficulty in finding substitutes, and achieve the effects of simple preparation method, high yield and good processing performance

Active Publication Date: 2012-11-14
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although since 1986, it has been found that polybrominated diphenyl ether flame retardants produce carcinogen dioxins when burned, the use of halogenated flame retardants has been restricted, but due to the excellent comprehensive cost performance of halogenated flame retardants, it is difficult to find suitable Substitutes, so research and development of high-efficiency halogenated flame retardants to reduce the amount of flame retardants and reduce their toxicity has become an important research direction of halogenated flame retardants

Method used

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  • Novel coordinate flame retardant compound of three elements silicon, chlorine and bromine, and preparation method thereof
  • Novel coordinate flame retardant compound of three elements silicon, chlorine and bromine, and preparation method thereof
  • Novel coordinate flame retardant compound of three elements silicon, chlorine and bromine, and preparation method thereof

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Embodiment 1

[0029] Example 1 In a 100ml four-necked flask equipped with a stirrer, a thermometer, and a high-efficiency reflux condenser, add 10ml of toluene, then add 6.8g (4.54ml, 0.04mol) of silicon tetrachloride, and at 25°C, the A solution of 13.12g (0.02mol) tetrabromobisphenol A diglycidyl ether dissolved in 40ml of toluene was dropped into silicon tetrachloride within 40 minutes, and the temperature was controlled by an ice-water bath to not exceed 50°C during the dropping process After the dropwise addition is completed, the temperature is raised to 80°C within 30min, and the temperature is kept for 3h; then the temperature is lowered to 70°C, and 11.1g (0.12mol) of epichlorohydrin is added dropwise, and the reaction temperature is controlled not to be higher than 80°C with a cold water bath and a dropping rate. After dropping, raise the temperature to 100°C within 1 hour, react for 7 hours, then distill off the toluene solvent, and then distill off a small amount of low boiling p...

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Abstract

The invention relates to a novel coordinate flame retardant compound of three elements silicon, chlorine and bromine, and a preparation method thereof, and in particular relates to a silicon halide coordinate flame retardant plasticizer tetrabromobisphenol A bi[tri(dichloropropoxy) silicon acyloxy chloropropyl] ether compound and a preparation method. The structure of the compound is expressed by the following formula: n is equal to 1 when m is 0, the n is equal to 1 when the m is 1, and x is 0, 1, 2 or 3. The preparation method comprises the following steps of: under stirring, dissolving tetrabromobisphenol A bisepoxy propyl ether in an organic solvent; dropping the mixture in silicon tetrachloride at the temperature of 25 DEG C; after dropping, carrying out insulation reaction for 3-4 hours at the temperature of 70-80 DEG C; dropping epoxychloropropane according to a certain mole ratio; reacting for 7-8 hours at the temperature of 80-100 DEG C; and carrying out purification treatment to obtain the tetrabromobisphenol A bi[tri(dichloropropoxy) silicon acyloxy chloropropyl] ether. The product isa good flame retardant plasticizer, and is suitable for being used as a flame retardant plasticizing additive such as epoxy resin, polyvinyl chloride, unsaturated polyester resin, and polyurethane.

Description

technical field [0001] The invention relates to a novel silicon, chlorine and bromine synergistic flame retardant compound and a preparation method thereof, in particular to a tetrabromobisphenol A bis[tri(dichloropropoxy)silyloxychloropropyl] A compound of ether and a preparation method thereof. The compound contains three flame-retardant elements of silicon, chlorine, and bromine, and can exert a synergistic flame-retardant synergistic effect, and has high flame-retardant efficiency; its ether-ester structure has better compatibility with materials, and increases It has good plasticity and is an excellent flame retardant plasticizer, suitable for use as a flame retardant plasticizer additive for epoxy resin, polyvinyl chloride, unsaturated resin, polyurethane, etc. Background technique [0002] With the rapid development of the world economy, the continuous improvement of people's living standards and the enhancement of safety awareness, the research on flame retardants ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/04C08K5/5415
Inventor 王彦林顾凤楼张伟
Owner SUZHOU UNIV OF SCI & TECH
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