43results about How to "Has char formation" patented technology

The invention relates to a fire retardant 2[3(chlorine propoxy)silicon acyloxy] ethane compound and a preparation method thereof. The structure of the compound is shown in the specification; -OC3H6Cl in the formula is 2-chlorin-1-propoxy or 1-chlorin-2-propoxy or a mixture of the 2-chlorin-1-propoxy and the 1-chlorin-2-propoxy. The preparation method comprises the following steps: dropwise adding equimolar chloropropanol to an organic solvent of silicon tetrachloride below 20 DEG C to react for 2 hours at 40 DEG C; then dropwise adding ethylene glycol which is 0.5fold mole of the silicon tetrachloride to react for 6-9 hours at 55-75 DEG C; cooling to below 40 DEG C; dropwise adding chloropropanol which is 2-3fold mole of the silicon tetrachloride to react for 6-10 hours at 65-85 DEG C; adding a little of acid-binding agent, and stirring for 1 hour in heat preservation, thereby obtaining fire retardant 2[3(chlorine propoxy)silicon acyloxy] ethane by purification treatment. The compound disclosed by the invention is applicable to being used as a fire retardant of the materials such as polyvinyl chloride, polyurethane, epoxy resin and unsaturated polyester resin, and is simple in preparation technology and low in cost, and easily achieves industrial production.

The invention relates to a tris(2-dimethylbromoethoxysilyloxyethyl) isocyanurate compound and a preparation method thereof. The structure of the compound is shown in the following formula: the preparation method is as follows: three ( 2‑Hydroxyethyl) isocyanurate is dissolved in an organic solvent, and dimethyldibromosilane, which is 3 times molar to tris (2‑hydroxyethyl) isocyanurate, is added at 30°C to 50°C React for 5-9 hours; after the HBr is released, cool down to below 5°C, pass a certain mole of ethylene oxide under the liquid surface, raise the temperature to 15°C-40°C after 1-2 hours, and keep warm for 4-8 hours; Tris(2-dimethyl bromoethoxysilyloxyethyl) isocyanurate was obtained after purification. The flame retardant of the invention has high flame retardant efficiency and good compatibility with polymer materials, is suitable for use as a flame retardant plasticizer for polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin, etc., and has simple production process and low cost , easy to realize industrial production.

The present invention relates to a polymerized organic silicon flame-retardant char-forming agent polymer and a preparation method thereof, in particular to a flame-retardant char-forming agent polydimethylsilicate resorcinol ester polymer and a preparation method thereof. The structure of the object is shown in the following formula: n=30~80 in the formula. The preparation method is: in an organic solvent, in the presence of triethylamine, react resorcinol with equimolar dimethyldihalosilane; or react sodium resorcinol with equimolar dimethyldihalosilane, After purification, resorcinol polydimethylsilicate is obtained. The polydimethylsilicate resorcinol ester of the present invention has large molecular weight, high decomposition temperature, good compatibility with materials, no migration, good char formation, and is suitable for use as polyolefin, polyester, polyamide, epoxy resin , unsaturated resin, etc., and the production process is simple, the cost is low, and it is easy to realize industrial production.

The invention relates to a flame retardant plasticizer dihalopropyl dimethyl silicate compound and a preparation method thereof. The structure of the compound is shown in the following formula: in the formula, ClXC3H5O is CH2ClCHXCH2O or (CH2Cl)(CH2X)CHO, X= Cl or Br. The preparation method is as follows: dissolve dimethyldihalosilane in an organic solvent, add epichlorohydrin 2 to 3 times the mole of dimethyldihalosilane, raise the temperature to 70°C to 110°C, and keep the temperature for 5 to 13 hours. After purification, dihalopropyl dimethyl silicate can be obtained. The dihalopropyl dimethylsilicate of the present invention has high flame retardant efficiency and good plasticity, and is suitable for use as a flame retardant plasticizer for polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin, etc., and the production process is simple and the cost is low. Low, easy to realize industrial production.

The invention relates to a flame retardant ethylenedioxy dual-silicate propyl chloride and a preparation method thereof. The compound has a structure shown in the specification, wherein m is an integer from 0 to 3. The preparation method comprises the following steps: dropwise adding propylene epoxide into an organic solution of the silicon tetrachloride at a temperature being below 0 DEG C and reacting for 1 hour at 40 DEG C, wherein the molar mass of the propylene epoxide is 2 times that of the silicon tetrachloride; dropwise adding ethylene glycol and reacting for 6-9 hours at 55-75 DEG C, wherein the molar mass of the ethylene glycol is 0.5 time that of the silicon tetrachloride; cooling to the temperature being below 30 DEG C, dropwise adding the propylene epoxide and reacting for 4-7 hours at 60-80 DEG C, wherein the molar mass of the propylene epoxide is 1-1.5 times that of the silicon tetrachloride; performing purification treatment to obtain the flame retardant ethylenedioxy dual-silicate propyl chloride. The compound disclosed by the invention has high synergistic flame retardant performance of double elements of silicon and chloride, is suitable to be used as flame retardants of the materials such as polyvinyl chloride, polyurethane, epoxy resin and unsaturated resin, is simple in preparation process and low in cost, and can be put into industrial production easily.

The present invention relates to a kind of preparation method of flame retardant dimethyl chloropropoxy silyloxy halopropyl isocyanurate compound, the structure of the compound is shown in the following formula: where OC3H6Cl is OCH2CHClCH3 or OCH(CH2Cl ) CH3; n=0 when m=1, n=1 when m=0; X=Cl or Br. The preparation method is: dissolve triglycidyl isocyanurate in an organic solvent, add dimethyldihalosilane, react at 50°C-100°C for 4-10 hours; add a certain mole of chloropropanol dropwise, after the drop React at 50°C to 100°C for 5 to 10 hours; after purification, dimethyl chloride propoxysilyloxyhalopropyl isocyanurate can be obtained. The flame retardant of the invention has high flame retardant efficiency and good compatibility with polymer materials, is suitable for use as a flame retardant plasticizer for polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin, etc., and has simple production process and low cost , easy to realize industrial production.

The invention relates to a polydimethyl silicate terephthalic diester polymer as a flame-retardant charring agent and a preparation method thereof. The structural formula of the polymer is shown in the description, and in the structural formula, n is equal to 20-50. The preparation method comprises the following steps: in the presence of triethylamine, enabling hydroquinone to react with equimolar dimethyl dihalide silane in an organic solvent, or enabling hydroquinone sodium to react with equimolar dimethyl dihalide silane in an organic solvent, and performing purification so as to obtain polydimethyl silicon acid terephthalic diester. The polydimethyl silicate terephthalic diester disclosed by the invention is high in molecular weight, is good in material compatibility, is not easy to separate out, is good in charring performance, and is suitable for being used as a flame-retardant charring agent of polyolefine, polyester, polyamide, an epoxy resin, an unsaturated resin and the like. The production technology is simple, the cost is low, and the industrialized production is easy to realize.

The invention relates to a preparation method of a plasticizer with collaborative flame retardancy of silicon, nitrogen and halogen and in particular relates to a preparation method of tris (dimethyl halogen ethoxy silicon acyloxy halogen propyl). The structure of the compound is shown in the specification. In the formula, when m=0, n=1; when m=1, n=0; Q=Cl or Br; and X=Cl or Br. The preparation method comprises the following steps: dissolving triglycidyl isocyanurate in an organic solvent, adding 3 times mole of dimethyldichlorosilane, raising the temperature to 40-100 DEG C, and carrying out heat preservation reaction for 5-10h; and adding 3-4 times mole of 2-halohydrins dropwise, reacting for 4-10h at the temperature of 60-100 DEG C, and purifying to obtain the tris (dimethyl halogen ethoxy silicon acyloxy halogen propyl). The flame retardant plasticizer is high in flame-retarded efficiency, good in compatibility with a polymer material, suitable for being used as the flame retardant plasticizer of polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin and the like, simple in production process, low in cost and easy in realizing industrial production.

The invention relates to a flame retardant bis[tris(3-chloropropoxy)silicon-acyloxy]ethane compound and a preparation method thereof. The structure of the compound is represented by a formula shown in a drawing. The preparation method comprises the steps of reacting silicon tetrachloride with 3-chloropropanol of a mole which is equal to that of silicon tetrachloride in an organic solvent at the temperature below 20 DEG C, then, dropwise adding glycol of a mole which is 0.5 times that of silicon tetrachloride, heating to the temperature of 55-75 DEG C after completing dripping, and reacting for 5-9 hours; then, dropwise adding 3-chloropropanol of a mole which is 2-3 times that of silicon tetrachloride, and carrying out heat-preservation reaction for 6-9 hours at the temperature of 65-85 DEG C; adding an acid binding agent after HCl gas is completely discharged, and carrying out heat preservation for 1 hour while stirring; purifying, thereby obtaining the flame retardant bis[tris(3-chloropropoxy)silicon-acyloxy]ethane. The compound disclosed by the invention has high flame retarding efficacy due to the synergism of silicon and chlorine elements and is suitable for serving as a flame retardant for materials, such as polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin and the like, and the preparation method is simple and is low in cost, so that the industrial production is easy to realize.

The invention relates to a tribromophenoxy bromopropyl dimethyl silicate compound and a preparation method thereof, in particular to bis(2,4,6-tribromophenoxy bromopropyl) dimethyl silicate compound and Its preparation method, the structure of the compound is shown in the following formula: in the formula, when m=1, n=0, and when n=1, m=0. The preparation method is: in a reactor equipped with a stirrer, a thermometer and a condenser tube, replace the air in the reactor with nitrogen, dissolve 2,4,6-tribromophenyl glycidyl ether in an organic solvent, Add 0.5 times mole of dimethyldibromosilane dropwise, react at 30°C-60°C for 5-11 hours after the drop, and obtain dimethylsilicate bis(2,4,6-tribromophenoxy bromopropyl) ester. The flame retardant of the present invention has high flame retardant efficiency and good compatibility with materials, is suitable for use as a flame retardant for polyvinyl chloride, polyester, epoxy resin, unsaturated resin, etc., and has simple production process, low cost and easy realization Industrial production.