57results about How to "Adapt to high temperature processing" patented technology

The invention relates to a fire retardant tribromophenoxy tri(dichloro propanolato)silane compound and its preparation method. The structure of the compound is as shown in the formula in the specification, wherein R2=CH2Cl when R1=H; and R2=H when R1=CH2Cl. The preparation method comprises the following steps: dropwisely adding equimolar dichlorohydrin into a silicon tetrachloride organic solution to react at 35 DEG C for 1h, adding equimolar tribromophenol to react at 50-80 DEG C for 2-5h, dropwisely adding double mole times of dichlorohydrin to react at 50-70 DEG C for 3-6h, and carrying out underpressure distillation to remove a solvent so as to obtain a product tribromophenoxy tri(dichloro propanolato)silane. The product is an excellent flame retardation plasticizer, has charcoal-forming and antidrip effects, and can be used as a fire retardant of materials such as polyvinyl chloride, nonsaturated polyester, polyurethane and epoxy resin, etc. Raw materials of the product are cheap and easily available. Production costs are low. Equipment investment is little. The production technology is simple. The preparation method is easy for large-scale production.

The invention relates to a flame retardant tri-(tribromophenoxy) dichloro propoxy silane compound and a preparation method thereof. A structural formula of the compound is as follows as shown in the specification, wherein when R1 is H, R2 is CH2Cl, and when R1 is CH2Cl, R2 is H. The preparation method comprises the steps that equimolar dichloropropanol is dropwise added to an organic solution of silicon tetrachloride, and reacts at 35 DEG C for 1h; three times of mole of tribromphenol is added, and reacts at 80-110 DEG C for 7-9h; a solvent is removed by reduced pressure distillation; and tri-(tribromophenoxy) dichloro propoxy silane is obtained. Tri-(tribromophenoxy) dichloro propoxy silane is an excellent antiflaming plasticizer, has charring and dripping prevention functions, has good compatibility with a high polymer material, and can serve as a flame retardant of polyvinyl chloride, unsaturated polyester, polyurethane, epoxy resin and the like, raw materials of tri-(tribromophenoxy) dichloro propoxy silane are low in cost and easy to obtain, the production cost is low, the equipment investment is low, a production technology is simple, and the scale production is facilitated.

The invention relates to a flame retardant tri(dibromopropyl)tribromophenyl silicate esterification compound and a preparation method thereof. The structure of the compound is shown in the specification, wherein R2=CH2Br if R1=H; and R2=H if R1=CH2Br. The preparation method comprises the following steps of: dropwise adding equimolar dibromopropyl alcohol into an organic solvent of silicon tetrachloride at a temperature below 8 DEG C, and reacting for 1 hour at 35 DEG C; adding equimolar tribromophenol, and reacting for 2-4 hours at 50-80 DEG C; dropwise adding dibromopropyl alcohol of twice molar weight, and reacting for 3-5 hours at 50-70 DEG C; and performing reduced-pressure distillation to remove the solvent to obtain the product tri(dibromopropyl)tribromophenyl silicate. The product is an excellent flame-retardant plasticizer with a charring anti-drop effect and can be used as a flame retardant for the materials such as polyvinyl chloride, unsaturated polyester, polyurethane, epoxy resin and the like; and moreover, the flame retardant has the advantages of cheap and easily-available raw materials, low production cost, low equipment investment and simple production technology, and is easy to produce in a large scale.

The invention relates to a flame retardant tri(chloropropyl)tribromophenyl silicate esterification compound and a preparation method thereof. The structure of the compound is shown in the specification, wherein n is an integer from 0 to 3. The preparation method comprises the following steps of: controlling the temperature below 30 DEG C; dropwise adding equimolar epoxypropane into an organic solution of silicon tetrachloride, and adding equimolar tribromophenol; performing a thermal-insulation reaction at 50-70 DEG C for 2-4 hours; cooling to 40 DEG C; dropwise adding epoxypropane of a certain molar ratio, and performing a thermal-insulation reaction at 45-70 DEG C for 3-6 hours; distilling out excessive epoxypropane; and performing reduced-pressure distillation to remove the solvent and a few low-boiling point substances to obtain the product tri(chloropropyl)tribromophenyl silicate. The tri(chloropropyl)tribromophenyl silicate provided by the invention is an excellent flame-retardant plasticizer with a charring anti-drop effect and good compatibility with a high-molecular material, and can be used as a flame retardant for the materials such as polyvinyl chloride, unsaturated polyester, polyurethane, epoxy resin and the like; and moreover, the flame retardant has the advantages of cheap and easily-available raw materials, low production cost, low equipment investment and simple production technology, and is easy to produce in a large scale.

The invention relates to a dibutyl phenylphosphinate (PPDB) flame retardant composition and an application method thereof. The flame retardant composition is prepared by the steps of compounding one or two of PPDB, chlorinated paraffin-52 (short for CP52), tetrachloroethyl silicate (short for STCE), tetradichloropropyl silicate (short for STDE) or tridichloropropyl phenyl silicate (short for STDPE) according to any ratio, and then, uniformly mixing, wherein the weight parts of both PPDB and CP52 are larger than zero. The flame retardant composition provided by the invention has the advantages of synergistic effect among various elements, good compatibility with materials, high flame-retardant efficiency, low cost and the like, and can be used as a flame retardant for materials such as polyvinyl chloride, polyurethane, unsaturated resin, epoxy resin and the like so as to have favorable application prospects.