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

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...

AI Technical Summary

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

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