804 results about "Chloride vinyl" patented technology

This invention relates to a method for using a low-content ruthenium-based catalyst modified with nitrogen and oxygen ligands in the hydrochlorination of acetylene. The invention utilizes 2-pyridine carboxylate as a ligand, commercial activated carbon as a support, trace amounts of ruthenium as the main active component, and water as a solvent. An improved synthesis procedure yields a low-content ruthenium-based catalyst with ruthenium ions coordinated by a modifier and commercial activated carbon as a support, significantly improving catalyst performance while reducing ruthenium content. This catalyst exhibits high activity and vinyl chloride selectivity in the fixed-bed hydrochlorination of acetylene to vinyl chloride, and its low cost makes it highly valuable for industrial applications. The ruthenium loading is 0.1%, and the reaction gas space velocity is 170 h⁻¹. ‑1 V (C2H2) / V (HCl) With a ratio of 1:1.05 and a reaction temperature of 180℃, the acetylene conversion rate can reach 84.3%, the vinyl chloride selectivity is greater than 99%, and the activity remains basically unchanged within 10 hours.

The invention provides a calcium sulfate whisker reinforced and toughened polyvinyl chloride pipe and a preparation method thereof, and belongs to the technical field of polyvinyl chloride pipes. The plastic comprises the following components in parts by mass: 100 parts of polyvinyl chloride resin, 5-15 parts of calcium sulfate whiskers, 0.5-3 parts of a coupling agent, 2-4 parts of a heat stabilizer, 0.5-1.5 parts of a lubricant and 1-3 parts of a processing aid, wherein the adding amount of the calcium sulfate whiskers is 5-15% of the mass of the polyvinyl chloride resin. The coupling agent is used for treating the calcium sulfate crystal whiskers, so that the treated calcium sulfate crystal whiskers can be infiltrated by the polyvinyl chloride matrix, and a good interface layer is formed between the calcium sulfate crystal whiskers and the polyvinyl chloride matrix; the calcium sulfate whisker treated by the silane coupling agent can play a role of a filling agent and impact resistance, replaces calcium carbonate, achieves a filling effect, can improve the strength, hardness, dimensional stability and heat resistance of the pipe, and can reduce the production cost due to the fact that the calcium sulfate whisker is a low-price environment-friendly material.

The invention discloses a rigid polyvinyl chloride pipe and a preparation method thereof, and relates to the technical field of materials. The rigid polyvinyl chloride pipe comprises the following raw material components in parts by weight: 80-90 parts of polyvinyl chloride with an ultrahigh polymerization degree; 10 to 20 parts of polyvinyl chloride with ultralow polymerization degree; 2 to 4 parts of nano boehmite; 4-5 parts of a stabilizer; 8-12 parts of a plasticizer; 0.6 to 1.2 parts of a lubricant; 15 to 25 parts of a filling agent; 3-5 parts of nuclear titanium dioxide; the polymerization degree of the polyvinyl chloride with the ultrahigh polymerization degree is 1500 to 1800; the polymerization degree of the polyvinyl chloride with the ultralow polymerization degree is 600 to 800. The rigid polyvinyl chloride tube disclosed by the invention has excellent processability, thermal stability, impact resistance, flame retardance, insulating property and surface glossiness.

The invention discloses a method for synthesizing a dichloroacetyl compound, which comprises the following steps: tetrachloroethylene and an acid are subjected to an addition reaction at 100-200 DEG C to obtain an adduct, then the adduct is subjected to an acidolysis, hydrolysis or alcoholysis reaction to obtain the dichloroacetyl compound, the acid for the addition reaction is at least one of sulfuric acid, trifluoromethanesulfonic acid, methanesulfonic acid and phosphoric acid, and the acid for the alcoholysis reaction is at least one of sulfuric acid, trifluoromethanesulfonic acid, methanesulfonic acid and phosphoric acid. The molar ratio of the tetrachloroethylene to the acid is 1: (1-10). By controlling the types of acids and increasing the temperature of the addition reaction, the addition reaction of tetrachloroethylene and acids in the absence of a catalyst is realized. Double bonds of tetrachloroethylene and hydrogen protons are subjected to an addition reaction in a strong acid environment to form a cationic intermediate, then the cationic intermediate is combined with acid radical anions to form an adduct, and the adduct intermediate is high in activity, unstable and free of separation and can be directly subjected to a hydrolysis reaction, an acidolysis reaction or an alcoholysis reaction with another substrate (such as water, acid or alcohol) respectively. The synthesis of dichloroacetyl series compounds is realized, and the route has universality and diversity.

The invention relates to the field of high polymer materials, and particularly discloses a high-oxygen-barrier moisture-barrier PE film and a process. The high-oxygen-barrier moisture-barrier PE film comprises a corona layer, a barrier layer and a heat sealing layer which are connected in sequence, the barrier layer comprises the following raw materials in parts by weight: 90-95 parts of polyethylene and 5-10 parts of polyvinylidene chloride, and the heat sealing layer is made of a polyethylene material; in addition, the preparation method provided by the invention has the advantages that the oxygen and moisture resistance of the polyethylene single film is improved, and meanwhile, the printing requirement is met.

The present disclosure relates to a flexible multi-layered material. An embodiment consistent with the disclosure has a plurality of poly(vinyl chloride)—PVC—layers, wherein at least one of the plurality of PVC layers is a foam layer, wherein each of the layers of the plurality of PVC layers comprises up to 60% (w / w) of a phthalate-free plasticizer, and wherein the phthalate-free plasticizer is selected from the group consisting of: phosphate, trimellitate, adipate, citrate, sebacate, polyester, vegetable oil, and mixtures thereof, and wherein the solubility of the phthalate-free plasticizer in the PVC is at least 13 (J·cm−3)1 / 2.

To provide a laminate embossing / debossing device capable of performing distinct embossing or debossing on laminates composed of multiple sheet materials.SOLUTION: A laminate embossing / debossing device 100 comprises a metal upper mold 20 having a convex pattern 22 that forms a pattern with recesses on the upper surface of a laminate 10 composed of a first vinyl chloride sheet material 10A and a second vinyl chloride sheet material 10B, a metal lower mold 30 having a recessed pattern 32 formed on the bottom surface of the laminate 10, corresponding to the convex pattern 22 with a pattern formed by convex portions, a mold drive unit 40 that causes the upper mold 20 and the lower mold 30 to clamp the laminate 10 by moving at least one of the upper mold 20 and the lower mold 30 toward or away from the other, and a high-frequency voltage application section 50 that applies high-frequency voltage to the upper mold 20 and the lower mold 30 in a state of clamping the laminate body 10.SELECTED DRAWING: Figure 1

The application discloses a mineral-based easily-recyclable compostable water-barrier coating and a preparation method thereof, and belongs to the technical field of paper-based packaging materials. The coating is formed by a biodegradable film-forming system and a hierarchical lamellar mineral system containing three different scales and morphologies. The mineral system contains specific morphology and size of lamellar kaolin, non-asbestos grade lamellar talc and fully exfoliated sodium montmorillonite. The mineral lamella forms a dense parallel spread barrier path in the coating through a specific coating and drying solidification process, and combines a pH value responsive reversible cross-linking system to achieve excellent water vapor and oxygen barrier properties, water resistance and oil resistance at a low dry weight of 8-15 g / m2. The coating system does not contain polyvinylidene chloride and perfluoro and polyfluoro alkyl substances. The paper-based material coated with the coating is easily defibered and recycled under standard alkaline warm water conditions, and the fiber recovery rate is high, and meanwhile, the whole material meets the industrial composting requirements.

PROBLEM TO BE SOLVED: To provide a vinyl chloride resin composition that is substantially free of tin-based stabilizers and has transparency and heat resistance. SOLUTION: A vinyl chloride resin composition containing at least 100 mass parts of a vinyl chloride resin, 0.5-2.6 mass parts of an organic acid zinc salt stabilizer, and 2-5 mass parts of a bisphenol A-type epoxy resin (excluding those containing an organotin stabilizer).

The utility model relates to a cable, and aims to provide a salt-fog-resistant high-water-blocking bending-resistant seamless aluminum extruded tube coaxial cable, which has the characteristics of salt fog resistance, corrosion resistance, good water-blocking property and small bending-resistant radius. According to the technical scheme, the salt-mist-resistant high-water-resistance bending-resistant seamless aluminum extruded tube coaxial cable comprises an inner conductor, and an insulating inner layer, an insulating foaming layer, a shielding layer and a sheath layer which are sequentially coated outside the inner conductor from inside to outside, the cable is characterized in that the inner conductor is made of high-strength copper-clad aluminum, the insulating inner layer is a salt-mist-resistant low-density polyethylene insulating layer, the insulating foaming layer is a physical foaming polyethylene layer, the shielding layer is a seamless aluminum tube, and the sheath layer is a vinyl chloride layer. An insulating outer surface bonding layer is arranged between the insulating foaming layer and the shielding layer, a waterproof layer is arranged between the shielding layer and the sheath layer, and a waterproof layer is arranged between the shielding layer and the sheath layer.

The invention discloses a high-impact-resistance plate and a preparation method thereof, and relates to the technical field of preparation of stone-plastic plates. The raw materials comprise the following components in parts by mass: 100-120 parts of a vinyl chloride-butadiene-styrene-acrylonitrile copolymer, 50-150 parts of calcium powder, 15-35 parts of a plasticizer, 0.2-0.8 part of an antioxidant, 1.5-5 parts of a stabilizer and 5-15 parts of a processing aid. The preparation method comprises the steps of mixing, banburying, open milling, calendering and cooling traction discharging. According to the invention, the influence of the raw material formula ratio of the stone-plastic plate on the impact resistance of the plate is explored, and a proper processing mode is matched, so that the stone-plastic plate prepared by taking the ABS copolymer and the calcium powder as main raw materials has better impact resistance.

The purpose of the present invention is to provide: a vinyl chloride resin composition which is capable of suppressing a decrease in powder fluidity even if containing a fine pulverized article of a vinyl chloride resin skin material; and a method for producing the vinyl chloride resin composition. This vinyl chloride resin composition is characterized by containing (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, (c) a plasticizer, and (d) a powder composition containing a powder of a vinyl chloride resin skin material.

The utility model relates to the technical field of vinyl chloride polymerization production, in particular to a safe feeding device of a solid-liquid-gas three-phase reaction kettle. The safe feeding device of the solid-liquid-gas three-phase reaction kettle comprises a reaction kettle and a pressure stabilizer, the pressure stabilizer is connected with a desulfurization tower through a deoxidation adsorption tower, the desulfurization tower is connected with the reaction kettle through a pre-heater, the reaction kettle is connected with a feeding tank, a temperature control coil pipe is arranged in the reaction kettle and connected with a refrigerating machine through a pipeline, and the refrigerating machine is connected with the deoxidation adsorption tower through a pipeline. And a pre-heating device coil pipe is arranged in the pre-heating device. According to the device, through the cooperative use of the heating sleeve, the connecting pipeline and the pre-heating device coil pipe, the waste heat of the reaction kettle is used for pre-heating a gas-phase raw material, so that the feeding temperature is ensured to reach a proper range, and the influence on the temperature in the reaction kettle due to the too low feeding temperature is avoided, thereby ensuring that a polymerization reaction can be carried out under a stable temperature condition; and the stability of product quality is improved.

To provide a polyvinyl chloride resin composition and a polyvinyl chloride sheet containing the composition, the composition achieving low odor while inhibiting reductions in conductivity, heat stability, and peelability.SOLUTION: The polyvinyl chloride resin composition contains a polyvinyl chloride resin, barium sulfate, talc, and a stabilizer having a melting point of 75°C or higher, and, relative to 100 pts.mass of the polyvinyl chloride resin, a total content of the barium sulfate and the talc is 3-30 pts.mass, and a content of the stabilizer is 3-15 pts.mass, and furthermore a ratio of the content of the talc to the content of the barium sulfate is 1-2.SELECTED DRAWING: None

The invention relates to the technical field of heat transfer printing, in particular to a high-adaptability transfer printing medium, a preparation method and application. The high-adaptability transfer printing medium comprises a color layer, components of the color layer comprise main components and a solvent, and the main components comprise thermoplastic acrylic resin, vinyl chloride-vinyl acetate resin, chlorinated polypropylene resin and pigment; the molecular weight Mw of the thermoplastic acrylic resin is 5000-10000, and the glass transition temperature of the thermoplastic acrylic resin is 60-80 DEG C. The transfer printing medium has the advantages that the transfer printing speed is high, and printing stocks made of various different materials are considered at the same time; and the transfer printing effect is good, solvent resistance is achieved, abrasion resistance is high, applicability is wide, and reliability is high.

The invention relates to the technical field of preparation of small molecule compound medicines, in particular to a preparation method of (S)-flurbiprofen. The method comprises the following steps: dropwise adding a tetrahydrofuran solution of 4-bromo-2-fluorobiphenyl into a mixture of tetrahydrofuran and magnesium, and reacting to generate a Grignard reagent; mixing tetrahydrofuran, (S)-vinyl chloride oxide and ferric acetylacetonate, dropwise adding the Grignard reagent, performing acidolysis ring opening, and performing methylation with methyl iodide and magnesium iodide to obtain an alpha-hydroxyl aromatic carboxylic acid derivative; and reacting with sodium chlorite, nitroxide free radicals and acetonitrile, and oxidizing to obtain the (S)-flurbiprofen. By introducing a chiral induction unit, effective transmission of chiral information is realized in a coupling stage, an original chiral center is not destroyed in a subsequent reaction, and a product is ensured to have a highly consistent configuration. According to the scheme, the technical problem that a method capable of remarkably improving the optical purity and yield of (S)-flurbiprofen is lacked in the prior art can be solved, and the method has good environmental friendliness and industrial application prospects.

An image recording method including: an image recording step of applying an ink onto a base material for image recording, which contains a polymer containing vinyl chloride as a constitutional unit, by an ink jet recording method, and irradiating the ink applied onto the base material for image recording with active energy ray X to obtain an image, in which, in the image recording step, a temperature of a surface of the base material for image recording, onto which the ink is landed, is 30° C. or higher at a point in time when the ink is landed on the base material for image recording, and the ink contains a polymerizable monomer A having a (meth)acryloyl group and a solubility parameter of 16.5 MPa1 / 2 to 21.3 MPa1 / 2, and a colorant.

This invention discloses a polyvinyl chloride (PVC) control cable, comprising, from the inside out, a composite cable core, a water-blocking wrapping tape layer, an insulating inner sheath, a flame-retardant wrapping tape layer, a flame-retardant inner sheath, a metal sheath layer, and an outer sheath. The flame-retardant wrapping tape layer is a ceramicized silicone rubber tape wrapped around the insulating inner sheath. The flame-retardant inner sheath is a flame-retardant silicone rubber material extruded and covered over the water-blocking wrapping tape layer. This product employs a combination of flame-retardant wrapping tape layer and flame-retardant inner sheath technology, with the flame-retardant inner sheath being a flame-retardant silicone rubber material extruded and covered over the water-blocking wrapping tape layer. This material is halogen-free, produces low smoke during combustion, and has excellent flame-retardant properties, providing dual flame-retardant protection. The ceramicized silicone rubber tape forms a hard, ceramic-like protective layer at high temperatures, and combined with the flame-retardant silicone rubber, it provides excellent flame-retardant and heat-insulating effects.

The invention relates to an amino silane coupling agent modified halloysite nanotube mercury-free catalyst for acetylene hydrochlorination reaction. The catalyst comprises a carrier and an active component. The carrier is a halloysite nanotube modified by one or more amino silane coupling agents. The active component is one or a combination of more of halides and complexes of precious metals such as gold, silver, rhodium, palladium, platinum and ruthenium, and the mass ratio of the single active component to the carrier is 0.01-1%. The preparation method of the catalyst adopts a preparation method combining a reflux method and an ultrasonic / microwave-assisted impregnation method, and comprises the following two steps: 1) grafting an amino silane coupling agent by adopting the reflux method to modify halloysite nanotubes; and 2) loading an active component on the halloysite nanotube obtained in the step 1) by using an ultrasonic / microwave-assisted impregnation method.The catalyst prepared in the invention shows good catalytic performance in an acetylene hydrochlorination reaction process, the acetylene conversion rate reaches 97.34%, and the vinyl chloride selectivity reaches up to 99.68%.

The application discloses an Au / HOF-Co0.5Fe0.5 catalyst for acetylene hydrochlorination reaction and a preparation method and application thereof. The Au / HOF-Co0.5Fe0.5 catalyst comprises a carrier and a gold active component loaded on the carrier, and the carrier is a doped hydrogen-bonded organic framework HOF-Co0.5Fe0.5. The application provides application of the Au / HOF-Co0.5Fe0.5 catalyst in a reaction of synthesizing chloroethylene through acetylene hydrochlorination, and the catalyst has good stability and high activity.

The utility model belongs to the technical field of polyvinyl chloride discharging, and particularly discloses polyvinyl chloride particle quantitative discharging equipment which comprises a discharging hopper, a bottom frame is arranged below the discharging hopper, a material collecting frame is movably arranged at the top end in the bottom frame, and a material collecting bin is formed in the top of the material collecting frame. A waste bin is formed in the material collecting frame, a driving mechanism is arranged at the front end of the bottom of the material collecting frame and matched with the material collecting frame, a connecting mechanism is arranged in the opening, and a guide column is arranged in the discharging hopper. By changing the heights of the two ends of the material receiving frame, quantitative discharging operation of materials is completed, meanwhile, the materials can be dispersed and layered in the material receiving bin, and fine particles, impurities and the like in the materials are filtered in a vibrating mode.

The utility model relates to cleaning equipment technical field, specifically is a kind of polyvinyl chloride resin production is used polymeric kettle cleaning equipment, including mounting bracket, the adjusting frame is slidably connected on the mounting bracket, the reel is installed on the adjusting frame, the hose is installed on the reel, the cleaning head is installed on the hose, the guide pipe is slidably connected on the hose, the fixed assembly is equipped on the guide pipe, the fixed assembly includes locating post, two locating posts are fixedly connected on the guide pipe, the locating post is slidably connected with fixed block, the fixed block is trapezoidal structure, the connecting plate is fixedly connected on the fixed block, and spring is fixedly connected between the connecting plate and locating post;By the flange disc of fixed block in the action of spring and slide out and polymeric kettle upper cleaning mouth place hook, it is convenient to quickly fix guide pipe, improve the fixing efficiency of guide pipe.

The present invention relates to a vinyl chloride-based polymer, a resin composition comprising same and a preparation method therefor, the vinyl chloride-based polymer having a degree of polymerization of 2,800-5,000, and having a polydispersity index of 3.5 or more, calculated from a weight average molecular weight and a number average molecular weight which are obtained through gel permeation chromatography (GPC) analysis by using polystyrene as a standard according to US EPA 3640A: 1994.

The invention discloses a special conductive PVC (polyvinyl chloride) resin and a preparation method thereof, and the method comprises the following steps: adding vinyl chloride monomer, deionized water, a composite initiator, a composite emulsifier and a PH value regulator into a polymerization kettle in a uniform dispersion manner after high-rotating-speed mechanical shearing, and heating with hot water to start polymerization reaction at the polymerization temperature of 49 + / -0.2 DEG C to obtain polyvinyl chloride latex; adding a viscosity reducer and a defoaming agent into the polymerization kettle; the obtained latex enters a discharging groove after being recycled, a conductive additive is added into the discharging groove, and the latex is evenly stirred in the discharging groove; dehydrating by a spray type drying tower, and physically crushing by a hammer type grinding machine to obtain the finished product polyvinyl chloride resin. The surface resistivity of the prepared conductive PVC special resin is below 107 ohms. Compared with the prior art, the conductive additive is added in the polymerization production process, so that the distribution of the conductive additive is more uniform, the construction of a conductive network is firmer, and the surface resistivity of the resin is easier to reduce.

The utility model relates to the field of well drilling exploration equipment, in particular to a polyvinyl chloride pipe drawing device which comprises a main body handle, one end of the main body handle is fixedly connected with a fulcrum clamping groove, a stress clamping groove is formed below the fulcrum clamping groove, one end of the stress clamping groove is oppositely connected with the main body handle, and the other end of the stress clamping groove is connected with the main body handle. A distance is reserved between the connecting point of the fulcrum clamping groove and the polyvinyl chloride pipe and the connecting point of the stress clamping groove and the polyvinyl chloride pipe. The device has the effect that the damaged polyvinyl chloride pipe can be conveniently taken out of a well.

According to the high-toughness scratch-resistant polyvinyl chloride film provided by the invention, the polyvinyl chloride film has high toughness and scratch resistance, so that the surface scratch resistance of the polyvinyl chloride film is good when the polyvinyl chloride film is used as an outer covering material. The high-polymerization-degree polyvinyl chloride composite material is prepared from the following components in parts by weight: 100 parts of high-polymerization-degree polyvinyl chloride resin; 20 to 30 parts of an orthophthalic plasticizer; 1.5 to 2.5 parts of a liquid barium-zinc heat stabilizer; 3-6 parts of a scratch-resistant agent; 10 to 15 parts of rutile titanium dioxide; 0-10 parts of heavy calcium carbonate; and 0.1 to 0.3 part of a lubricant.

The application discloses a ship polyvinyl chloride sheath cable and a preparation method thereof, and relates to the technical field of polyvinyl chloride sheath cables. Firstly, 2-vinylbenzoic acid and epichlorohydrin are subjected to ring-opening esterification reaction, and the two are combined together through the chemical reaction. Then, sodium hydroxide is added to the reaction system, and the reaction is further promoted to the direction of generating an epoxy group by removing hydrogen chloride, so that an epoxy group is successfully introduced into the molecular structure of 2-vinylbenzoic acid, and a multifunctional additive is prepared. The newly developed additive is applied to the production process of the ship polyvinyl chloride sheath cable, so that the cable has the characteristics of oil resistance, water resistance and corrosion resistance, and the flame retardation performance and long-term antioxidant capacity of the cable are significantly improved.

The present application relates to the technical field of cable, in particular to a kind of anti-aging cable and preparation method thereof.The cable includes conductor, crosslinked polyethylene insulation layer, shielding layer and sheath layer from inside to outside.The sheath layer is prepared by soft polyvinyl chloride resin, butyronitrile rubber, silicon dioxide, silane coupling agent and epoxidized branched modified nano titanium dioxide.Epoxidized branched modified nano titanium dioxide is branched modified nano titanium dioxide by using epoxypropanol and epoxide compound containing naphthalene ring structure, and then modified by epoxidation of epichlorohydrin.Epoxidized branched modified nano titanium dioxide significantly improves the anti-UV aging performance of the cable, reduces the yellowing degree under long-term outdoor exposure conditions, so that the cable has longer service life and higher safety and reliability, and is suitable for various outdoor harsh environments.

The invention belongs to the technical field of dehydration systems, particularly relates to a low-boiling tower feed dehydration system before VC rectification, and aims to solve the problems that in the prior art, when vinyl chloride is dehydrated by adopting a solid caustic soda particle layer, local excessive consumption and edge waste of solid caustic soda are easily caused due to non-uniform distribution of vinyl chloride, and the solid caustic soda is easily caked to block a channel, so that the product quality is influenced. According to the technical scheme, the device comprises a low-boiling tower feeding pump, an alkali liquor collecting tank, two drying boxes and a low-boiling tower, the right side of the low-boiling tower feeding pump is connected with a first connecting pipe, and the bottom ends of the two drying boxes are fixedly connected with fourth connecting pipes; the two fourth connecting pipes are fixedly connected with the first connecting pipe, and Y-shaped connecting pipes are fixedly connected to the top end of the alkali liquor collecting tank and the bottom ends of the two drying boxes. By optimizing vinyl chloride distribution and vibrating a solid caustic soda particle layer, vinyl chloride is made to make uniform contact with solid caustic soda, meanwhile, lumps are shaken to avoid blockage, and the drying efficiency is improved; the dehydration efficiency is improved; and the solid caustic soda replacement frequency is reduced.