40 results about "2,4,6-Tribromophenol" patented technology

The invention relates to a fire retardant di(dibromo propanolato)di(tribromophenoxy)silane compound and its preparation method. The structure of the compound is as shown in the formula in the specification, wherein R2=CH2Br when R1=H; and R2=H when R1=CH2Br. The preparation method comprises the following steps: dropwisely adding equimolar dibromopropyl alcohol into a silicon tetrachloride organic solution at 8 DEG C, keeping the temperature at 35 DEG C to react for 1h, adding two molar rations of tribromophenol, keeping the temperature at 60-90 DEG C to react for 4-6h, dropwisely adding equimolar dibromopropyl alcohol, keeping the temperature at 70-95 DEG C to react for 5-7h, and carrying out underpressure distillation to remove a solvent so as to obtain a product di(dibromo propanolato)di(tribromophenoxy)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 cost is 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 synthesis of fire retardant tri(bromophenoxy) cyanurate inside two-phase solution of water solution and organic solvent includes the following steps: reaction of bromized phenol and sodium hydroxide to produce bromized phenol sodium; and the reaction of bromized phenol sodium and cyanurichloride in the presence of catalyst and at proper temperature to produce tri(bromophenoxy) cyanurate. The catalyst is quaternary ammonium salt and quaternary phosphonium salt, and the proper temperature includes cyanurichloride dropping temperature of 20-35 deg.c and reaction temperature after finishing dropping of 40-55 deg.c. The bromized phenol may be bromophenol, dibromophenol or tribromophenol. The synthesis process of the present invention has high safety and low cost and is suitable for industrial production.

The invention belongs to the technical field of organic photoelectric materials, and discloses a small molecule hole transport material substituted by aromatic amine derivatives for phenol or alkoxybenzene, as well as its preparation and application. The hole transport material has a general structural formula represented by formula (1) or (2). The preparation method is as follows: dissolving tribromophenol or tribromoalkoxybenzene and aromatic amine boric acid derivatives in an organic solvent, then adding an aqueous alkali solution, adding a palladium catalyst under nitrogen, and reacting at 30-110°C for 0.5-48 hours , The reaction product was separated and purified to obtain the product. The present invention introduces electron-donating arylamine derivatives at the ortho and para positions of phenol or alkoxybenzene through the Suzuki reaction one-step method, and the obtained products have good hole transport performance and electron blocking performance, especially aromatic amine derivatives. The trisubstituted phenol is easy to be doped with lead metal cations, and has good hole transport performance without the need for additional dopants, and can be used in perovskite solar cells and other fields.

The invention relates to a fire retardant di(tribromophenoxy)dihalidepropoxysilane compound and its preparation method. The structure of the compound is as shown in the formula in the specification, wherein R is 2-chloro-1-propyl, 1-chloro-2-propyl, 3-chloro-1-propyl, 2-bromine-1-propyl, 1-bromine-2-propyl or 3-bromine-1-propyl. The preparation method comprises the following steps: dropwisely adding equimolar halogenated propanol into a silicon tetrachloride organic solution to react at 30 DEG C for 1h, adding tribromophenol which accounts for two times larger than equimolar halogenated propanol to react at 60-90 DEG C for 4-6h, dropwisely adding equimolar halogenated propanol to react at 40-60 DEG C for 3-5h, and carrying out underpressure distillation to remove a solvent so as to obtain di(tribromophenoxy)dihalidepropoxysilane. The product has good flame retardation and plastification properties, has charcoal-forming and antidrip effects, and can be used as a fire retardant of materials such as polyvinyl chloride, nonsaturated polyester, polyurethane, epoxy resin and the like. Raw materials of the fire retardant are easily available; production costs are low; equipment investment is little; the technology is simple; and the preparation method is easy for large-scale production.

The invention relates to a fire retardant silicic acid di(tribromophenyl)dichloroethyl ester compound and its preparation method. The structure of the compound is as shown in the specification. The preparation method comprises the following steps: controlling the temperature to below 20 DEG C, letting equimolar oxirane be blown below the liquid level of a silicon tetrachloride organic solution, adding tribromophenol which accounts for two times larger than equimolar oxirane, keeping the temperature at 65-90 DEG C and reacting for 3-6h, letting a certain mol ration of oxirane be blown below the liquid level, keeping the temperature at 40-60 DEG C and reacting for 2-4h, and carrying out underpressure distillation to remove a solvent so as to obtain a product silicic acid di(tribromophenyl)dichloroethyl ester. The silicic acid di(tribromophenyl)dichloroethyl ester provided by the invention is an excellent flame retardation plasticizer, has charcoal-forming and antidrip effects, has good compatibility with a high-molecular material, 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 fire retardant provided by the invention 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.