Flame retardant dimethyl dibromo neopentyl glycol silicate compound and preparation method thereof

Abstract

The invention relates to a flame retardant dimethyl dibromo neopentyl glycol silicate compound and a preparation method thereof. The structure of the dimethyl dibromo neopentyl glycol silicate compound can be shown in the formula (described in the specification). The preparation method of the dimethyl dibromo neopentyl glycol silicate compound comprises the following steps: at the temperature of 20 DEG C, dropwise adding dimethyl dichlorosilane, or dimethyl dibromosilane into an organic solvent solution dissolved with equimolar of dibromo neopentyl glycol, wherein during the dropwise adding, the temperature is controlled to be not higher than 50 DEG C, then heating to 70-130 DEG C within 1-2 hours, carrying out heat preservation and reaction for 4-8 hours, and purifying, so that white solid dimethyl dibromo neopentyl glycol silicate is obtained. The dimethyl dibromo neopentyl glycol silicate has the advantages that silicon and bromine elements are synergistic, flame-retardant efficiency is high, char forming characteristic is good, and material compatibility is good, so that the dimethyl dibromo neopentyl glycol silicate is applicable to serving as flame retardant of materials such as polyolefin, polyurethane, epoxy resin and unsaturated resin; meanwhile, a production process is simple, equipment investment is low, raw materials are available, cost is low, and industrial production can be easily realized.

Description

technical field

[0001] The invention relates to a flame retardant dibromoneopentyl glycol dimethyl silicate compound and a preparation method thereof. Dibromoneopentyl glycol dimethyl silicate is a silicon-halogen synergistic flame retardant, suitable for use as a flame retardant for materials such as polyolefins, polyurethanes, epoxy resins, and unsaturated resins. Background technique

[0002] Synthetic organic polymer materials have excellent application properties and are easy to process and shape, and are more and more widely used in various fields such as transportation, building materials, electronic appliances, daily furniture, and interior decoration. However, polymer materials are flammable, which promotes the rapid development of flame retardant science and technology. Among them, halogenated flame retardants have the advantages of low price, less addition amount, and good flame retardant effect, and are the organic flame retardants with the largest production an...

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