69 results about "Hydrofluoroolefin" patented technology

The present invention relates to system, equipment and methods for preparing and charging a refrigerant circuit with either (1) a fluoroolefin refrigerant compositions stabilized with an inhibitor agent which prevents or reduce oligomerization or polymerization of the fluoroolefin component of the composition or (2) a purified fluoroolefin refrigerant compositions by removing the inhibitor agent, and / or maintaining the integrity of fluoroolefin refrigerant compositions in refrigeration equipment by circulating the fluoroolefin refrigerant compositions in the refrigerant equipment through or more columns or devices to remove at least one of oxygen and oxygen containing contaminants, moisture / water, oligomerization / polymerization by-products.

The invention relates to the technical field of preparation of hydrofluoroolefin, in particular to a method for preparing 2, 3, 3, 3-tetrafluoropropene, which comprises the following steps: carrying out fluorination reaction on 3, 3, 3-trifluoro-2-chloropropene and excessive hydrogen fluoride under the action of a catalyst to generate a first mixture flow containing 1, 1, 1, 2, 2-pentafluoropropane (245cb), and separating the first mixture flow from the first mixture flow to obtain the 2, 3, 3, 3, 3-tetrafluoropropene. Then directly introducing the first mixture flow into a dehydrofluorination reactor for gas phase dehydrofluorination reaction to generate a second mixture flow containing 2, 3, 3, 3-tetrafluoropropene, hydrogen fluoride and unreacted raw materials, finally condensing the second mixture to remove hydrogen chloride, condensing and recycling hydrogen fluoride to obtain a third mixture flow, and rectifying the third mixture flow to obtain 2, 3, 3, 3-tetrafluoropropene. And 3, 3, 3, 3-tetrafluoropropene. According to the invention, unavoidable process wastes in the prior art are converted into recyclable reaction raw materials, the environmental protection and economic pressure of by-product treatment in the prior art is eliminated, meanwhile, the purpose of continuous flow reaction is effectively realized, and the process control difficulty and the process cost are reduced.

An aerosol delivery system is disclosed. The system comprises an aerosol container housing an aerosol composition that includes a propellant mixture and an additive. The propellant mixture comprises a first hydrofluoroolefin propellant in an amount of 50% to 99% w / w % and a second hydrofluoroolefin propellant in an amount of 1% to 50% w / w %. The additive is present in an amount of up to 70% w / w %, has a specific gravity of 0.5 to 1.2, a partition coefficient of −0.5 to 4, and a water content of up to 2% w / w %. A micromist actuator with an orifice diameter of 0.25 to 0.80 microns produces droplets of 25 to 50 microns. The aerosol has a viscosity of 0.5 to 3.0 centipoise, ensuring fine mist dispersion, prolonged airborne suspension, and consistent delivery, making it suitable for environmental scenting, air treatment, and personal care applications.

To provide a method capable of separating a monofunctional species, bifunctional species, etc. of a fluorinated ether compound having a polyfluoropolyether chain and a predetermined functional group in good yield and with high separation performance.A separation method for separating a compound represented by the formula (1) and a compound represented by the formula (2) from a mixture containing them by chromatography using a stationary phase and a mobile phase, wherein the mobile phase contains at least one type of specific solvent selected from a hydrofluoroolefin, a hydrochlorofluoroolefin, a chlorofluoroolefin, a cyclic hydrofluoroolefin, a cyclic hydrochlorofluoroolefin, a cyclic chlorofluoroolefin, a cyclic hydrofluorocarbon, a cyclic hydrochlorofluorocarbon, a cyclic chlorofluorocarbon and a perfluoroketone:A-(OX)m—O—Z—(R)n1  Formula (1)(R)n2—Z—(OX)m—O—Z—(R)n3  Formula (2)

A method for producing polyolefin-based resin expanded beads includes dispersing polyolefin-based resin particles in an aqueous medium, adding a physical blowing agent into a sealed container, and expanding the resin particles by impregnating the resin particles with the physical blowing agent in the sealed container, then releasing the resin particles from the sealed container together with the aqueous medium to produce expanded beads having an apparent density of 10 to 80 kg / m3. The physical blowing agent includes a hydrofluoroolefin. An addition amount of the hydrofluoroolefin is 10 to 30 parts by mass with respect to 100 parts by mass of the resin particles.

Pharmaceutical aerosol formulations containing pre-micronized albuterol sulfate, high amount of green propellant trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)), and a surfactant (polysorbate 80 (polyoxyethylene (20) sorbitan monooleate), polysorbate 20 (polyoxyethylene (20) sorbitan monolaurate), polyethylene glycol 1000, span 85 (sorbitan trioleate), polyvinylpyrrolidone K25, or their combination) in a pressurized metered dose inhaler are described. The formulations do not use any co-solvent, i.e., they are co-solvent-free (e.g., free of ethanol, glycerol, propylene glycol, and a combination thereof). The formulations provide highly efficient delivery, through metered dose inhaler (MDI), of pre-micronized albuterol particles into the patients' respiratory tracts and have the advantages of high efficacy, improved safety, and a low global warming potential (GWP) for environmental impact.

To provide an aerosol product having sufficient cooling performance without using hydrofluoroolefin as a propellant.SOLUTION: An aerosol product comprising an aerosol composition containing not less than 40vol% of at least one propellant selected from the group consisting of dimethyl ether and liquefied petroleum gas, an aerosol vessel for filling the aerosol composition, the aerosol vessel comprising a pressure vessel and an aerosol valve fixed to the pressure vessel, and a spray member attached to the aerosol valve, wherein the aerosol composition contains substantially no water, the aerosol valve is not formed with a gas phase introduction hole, and the spray member is not provided with a mechanical breakup mechanism, the aerosol valve has a stem hole cross-sectional area / an injection hole cross-sectional area of 5.0 or more.SELECTED DRAWING: Figure 1

The invention relates to the technical field of refrigerants, and particularly provides an environment-friendly refrigerant and a preparation method and a recovery system thereof. In order to solve the problems that a traditional refrigerant is high in global warming potential (GWP), large in degradation energy consumption and not matched with a novel catalyst, the refrigerant is hydrofluoroolefin containing beta-position C = C double bonds, the molecular general formula is CF3CF = CHR (R is H or F), the molecular size is smaller than or equal to 0.8 nm, and the refrigerant is specially designed for being matched with a mesoporous structure of a TNT-120 titanium dioxide nanotube, and adsorption-mass transfer optimization and photo-thermal synergistic degradation synergism are achieved. And a closed-loop solution from production to scrapping is provided for the novel refrigerant. The recycling system adopts a catalytic reactor of which the inner wall is loaded with a titanium dioxide nano coating, and the refrigerant is efficiently degraded under the conditions of low temperature (25-240 DEG C) and low light intensity (0.5-3W / cm < 2 >). The refrigerant has a GWPlt (GWPlt); the refrigerant has the advantages of being good in heat stability, low in degradation energy consumption, environmentally friendly in the whole life cycle and the like, is suitable for replacing a high-GWP refrigerant and meets the requirement for green refrigeration.

The present invention provides an aerosol composition that does not require emulsification of water and liquefied gas, can be uniformly dispersed for several seconds (e.g., 2 seconds or more) by shaking the container before spraying, can be sprayed with a stable composition, and produces a freezing spray that provides a sustained cooling effect. [Solution] An aerosol composition comprising water, a hydrofluoroolefin having a boiling point of 5 to 30°C, and dimethyl ether, wherein the dimethyl ether content is 10 to 40% by mass, and the composition is separated into two layers.

A B-side component of a two component low pressure polyurethane foam, the B-side component includes: a fluoride ion scavenger; one or more polyols consisting of all polyether polyols and, if the fluoride ion scavenger is a polyol, the fluoride ion scavenger, and no polyester polyols; at least one silicone polyether surfactant; at least one flame retardant and / or plasticizer; a catalyst package comprising an amine catalyst; and an HFO propellant consisting of 1,3,3,3-tetrafluoropropene and no other HFO propellant. Water is in an amount of less than 1% by weight of the B-side prior to inclusion of the HFO propellant at the B-side.

The objective is to provide a method for producing polyurethane foam that exhibits good miscibility between the polyol composition and the polyisocyanate composition, and also has excellent initial reactivity during polyurethane foam formation. [Solution] The present invention relates to a method for producing polyurethane foam by mixing and reacting a polyol composition containing a catalyst comprising a polyol and a metal carboxylate salt with a polyisocyanate composition containing a polyisocyanate, and then foaming and curing the mixture. The production method includes a step of supplying a blowing agent A in a separate system from the polyol composition and the polyisocyanate composition, wherein the blowing agent A comprises a mixture of carbon dioxide and a hydrofluoroolefin with a boiling point of 0°C or lower. The blowing agent A is added to at least one of the polyol composition and the polyisocyanate composition in a ratio of 0.01 to 4 parts by mass per 100 parts by mass of polyol in the polyol composition, and the reaction proceeds after the addition.

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit in which a first refrigerant circulates and an auxiliary heating unit in which a second refrigerant circulates, at least one of the first refrigerant and the second refrigerant may comprise at least one of: a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.

The present invention relates to a polyol component for producing polyurethane foam, the polyol component comprising: (a) a compound having at least two isocyanate-reactive hydrogen atoms; (b) at least one polyurethane catalyst (b1) containing at least one tertiary nitrogen atom, the tertiary nitrogen atom being part of an aliphatic or aromatic ring and / or bonded to at least one secondary carbon atom; and at least one polyurethane catalyst (b2) selected from the group consisting of cyclic amides, wherein the polyurethane catalysts (b1) and (b2) do not have a dimethylamino group bonded to a primary carbon atom; (c) a blowing agent comprising a hydrofluoroolefin; and (d) optional additives. The present invention also relates to a process for producing polyurethane foam, which comprises mixing the polyol component with an isocyanate component comprising at least one polyisocyanate to form a reaction mixture and convert the resulting mixture into a polyurethane, and to the polyurethane foam obtained by such a process.

To provide an urethane foam insulation material for a refrigerator reducing a carbon dioxide discharge amount and using a next-generation HFO-system foaming agent for achieving carbon neutral.SOLUTION: An insulation body includes a foamed polyurethane resin filled and formed in a space. The foamed polyurethane resin is formed by mixing at least a polyol component, a polyisocyanate component and a foaming agent as a hydro-fluoro-olefin having a boiling point of 15°C or lower under the atmospheric pressure so as to have about 18°C, injecting the mixture into a space, and foaming and curing the mixture.SELECTED DRAWING: Figure 1

Provided is a method capable of separating 1-functional and 2-functional fluorine-containing ether compounds having a polyfluoropolyether chain and a prescribed functional group with good yield and high separation capacity. A separation method is a separation method for separating a compound represented by formula (1) and a compound represented by formula (2) from a mixture containing them using a chromatograph using a stationary phase and a mobile phase, wherein the mobile phase contains at least one specific solvent selected from the group consisting of hydrofluoroolefins, hydrochlorofluoroolefins, chlorofluoroolefins, cyclic hydrofluoroolefins, cyclic hydrochlorofluoroolefins, cyclic chlorofluoroolefins, cyclic hydrofluorocarbons, cyclic hydrochlorofluorocarbons, cyclic chlorofluorocarbons, and perfluoroketones.A‑(OX) m ‑O‑Z‑(R) n1 Formula (1) (R) n2 ‑Z‑(OX) m ‑O‑Z‑(R) n3 Formula (2)

In a refrigeration cycle system, a mixed refrigerant is used as a working medium for the refrigeration cycle, and the mixed refrigerant contains a hydrofluoroolefin and a high-solubility refrigerant having a higher solubility in refrigerating machine oil than the hydrofluoroolefin. The control unit controls at least one of the compressor and the expansion valve by setting the upper limit value of the internal pressure to P0 (P0 < P1) and the upper limit value of the exhaust gas temperature to T0 (T0 < T1) during a period from when the compressor is started until a predetermined time t1 has elapsed. After a predetermined time t1 has elapsed, the upper limit value of the internal pressure is changed from P0 to P1, and the upper limit value of the exhaust gas temperature is changed from T0 to T1, thereby controlling at least one of the compressor and the expansion valve. This makes it possible to satisfactorily suppress or alleviate disproportionation reactions even when a refrigerant oil is used together with a working medium for a refrigeration cycle containing a fluoroolefin and another refrigerant.

This method of producing a hydrofluoroolefin includes contacting a mixture including a hydrofluorocarbon and at least one selected from the group consisting of CXA1XA2═CXA3XA4, CXA5≡CXA6, and CXA7XA8XA9—CXA10XA11XA12 with a catalyst, and obtaining the hydrofluoroolefin by a dehydrofluorination reaction of the hydrofluorocarbon, each of XA1 to XA12 independently represents a hydrogen atom, a fluorine atom, a chlorine atom, or a hydrocarbon chain having 1 to 8 carbon atoms, at least one of XA1 to XA4 has at least one of a hydrogen atom or a chlorine atom, at least one of XA5 or XA6 has at least one of a hydrogen atom or a chlorine atom, and at least one of XA7 to XA12 has a halogen atom other than a fluorine atom.

Provided is a separation method with which a halogenated unsaturated hydrocarbon and a halogenated saturated hydrocarbon can be separated well.　In this separation method, an adsorbent and a composition containing a halogenated unsaturated hydrocarbon and a halogenated saturated hydrocarbon are brought into contact, the halogenated unsaturated hydrocarbon or the halogenated saturated hydrocarbon is selectively made to adsorb to the adsorbent, and the halogenated unsaturated hydrocarbon and the halogenated saturated hydrocarbon are separated. The halogenated unsaturated hydrocarbon is at least one type of halogenated unsaturated hydrocarbon selected from the group consisting of hydrofluoroolefins and hydrochlorofluoroolefins, the halogenated saturated hydrocarbon is at least one type of halogenated saturated hydrocarbon selected from the group consisting of hydrofluorocarbons and hydrochlorofluorocarbons, and the adsorbent is at least one type of adsorbent selected from [Fe2(O2)(dobdc)], [Co(AIN)2], and Co-gallate.

A method for producing a hydrofluoroolefin, which comprises bringing a mixture containing a hydrofluorocarbon and at least one member selected from the group consisting of CXA1 XA2 = CXA3XA4, CXA5 = CXA6, and CXA7XA8XA9-CXA10XA11XA12 into contact with a catalyst, and obtaining a hydrofluoroolefin by a dehydrofluorination reaction of the hydrofluorocarbon. XA1-XA12 each independently represents a hydrogen atom, a fluorine atom, a chlorine atom, or a C1-8 hydrocarbon chain, at least one of XA1-XA4 has at least one of a hydrogen atom and a chlorine atom, at least one of XA5 and XA6 has at least one of a hydrogen atom and a chlorine atom, and at least one of XA7-XA12 has a halogen atom other than a fluorine atom.

The present invention relates to a cleaning agent composition which is excellent in cleaning property and does not corrode plastic substrates such as polycarbonate and polystyrene which are not resistant to solvents. The cleaning agent composition of the present invention comprises the following (A) to (C) components, the mass ratio of the (A) component and the (B) component being 11:89 to 99:1, (A) cis-1-chloro-3,3,3-trifluoropropene, (B) one or more compounds selected from the group consisting of hydrofluoroolefins, hydrofluorocarbons and hydrofluoroethers which do not contain a chlorine atom, and (C) a hydrocarbon solvent.

The embodiment of the present application provides a high-boiling hydrogen fluoride alkene ether compound and a preparation method and application thereof, relates to the field of fluorine chemical industry and heat management technology. The hydrogen fluoride alkene ether compound provided by the embodiment of the present application has a structure shown in formula I. The hydrogen fluoride alkene ether compound provided by the embodiment of the present application has excellent environmental protection (ODP value is 0, and GWP value is less than 100) and high boiling point (> 150 DEG C), thereby having a wide adaptive temperature range. Moreover, the hydrogen fluoride alkene ether compound has excellent material compatibility, has no corrosiveness to various metals, high polymer materials and glass ceramic materials; has low low-temperature viscosity; has excellent insulation performance and good high-temperature resistance. The hydrogen fluoride alkene ether compound is used as a temperature control working medium, has high efficient temperature control stability advantages, and can achieve the purpose of energy saving and consumption reduction. The embodiment of the present application provides a preparation method of the hydrogen fluoride alkene ether compound, raw materials are easy to obtain, the process is simple, the yield is high, and excellent cost advantages are achieved.

An aerosol delivery system is disclosed. The system comprises an aerosol container housing an aerosol composition that includes a propellant mixture and an additive. The propellant mixture comprises a first hydrofluoroolefin propellant in an amount of 50% to 99% w / w% and a second hydrofluoroolefin propellant in an amount of 1% to 50% w / w%. The additive is present in an amount of up to 70% w / w%, has a specific gravity of 0.5 to 1.2, a partition coefficient of -0.5 to 4, and a water content of up to 2% w / w%. A micromist actuator with an orifice diameter of 0.25 to 0.80 microns produces droplets of 25 to 50 microns. The aerosol has a viscosity of 0.5 to 3.0 centipoise, ensuring fine mist dispersion, prolonged airborne suspension, and consistent delivery, making it suitable for environmental scenting, air treatment, and personal care applications.

Disclosed are a method and apparatus for operating a virtual HVAC model implemented as a digital twin. The method is configured to simulate and control thermal conditions within a vehicle environment. The method comprises receiving input data related to vehicle operating conditions and environmental factors, and processing the input data using a trained artificial intelligence model to simulate thermal behavior within a vehicle cabin. The virtual HVAC system is then controlled based on the simulation to evaluate performance and optimize energy usage. The virtual HVAC model utilizes a refrigerant selected from a wide range of types, including natural refrigerants, hydrofluorocarbons (HFCs), hydrofluoroolefins (HFOs), and others.

The invention discloses a preparation method of hydrofluoroolefin, and the preparation method comprises the following steps: in a polar aprotic solvent, halogenated olefin with a general formula of Rf1CX = CH2 and halogenated alkane with a general formula of Rf2Y react under the action of a reducing agent and a catalyst to obtain hydrofluoroolefin with a general formula (I), Rf1 and Rf2 are independently selected from C1-C5 fluoroalkanes, and Rf2 and Rf3 are independently selected from C1-C5 fluoroalkanes. The fluoroalkane contains at least one of O, N, Cl and H; x is selected from at least one of chlorine, bromine and iodine; y is selected from at least one of chlorine, bromine and iodine; the reducing agent is selected from at least one of metal copper, metal zinc or hydrazine, and the catalyst is selected from at least one of monovalent inorganic salt or monovalent organic salt of copper. The preparation method is simple in process, low in cost, few in three wastes, high in product yield and suitable for industrial production.

An aerosol delivery system is disclosed. The system comprises an aerosol container housing an aerosol composition that includes a propellant mixture and an additive. The propellant mixture comprises a first hydrofluoroolefin propellant in an amount of 50% to 99% w / w % and a second hydrofluoroolefin propellant in an amount of 1% to 50% w / w %. The additive is present in an amount of up to 70% w / w %, has a specific gravity of 0.5 to 1.2, a partition coefficient of −0.5 to 4, and a water content of up to 2% w / w %. A micromist actuator with an orifice diameter of 0.25 to 0.80 microns produces droplets of 25 to 50 microns. The aerosol has a viscosity of 0.5 to 3.0 centipoise, ensuring fine mist dispersion, prolonged airborne suspension, and consistent delivery, making it suitable for environmental scenting, air treatment, and personal care applications.

A heat pipe including: a container including one end portion and another end portion opposite the one end portion, an end face of the one end portion and an end face of the other end portion being sealed; a wick structural body provided inside the container; and a working fluid encapsulated inside the container, wherein the wick structural body includes a fine groove provided on an inner surface of the container and / or a porous body provided on the inner surface of the container, and the working fluid contains hydrofluoroolefin.

Refrigerant blends of HFOs and HCs, having HFOs as the main component, provide better cooling capacity than incumbent HFOs and maintain low flammability. Refrigerant blends of HFOs and HCs, having HCs as the main component, allow for larger HC charge at reduced flammability. Such compositions include (i) at least one compound selected from HFO-1234ze(E), HFO-1234ze(Z), HFO-1336mzz(E), HFO-1336mzz(Z), HCFO-1233zd(E), HCFO-1233zd(Z), CFO-1112, and combinations thereof, (ii) at least one other compound selected from HC-290, HC-1270, R-600, R-600a, R-601, R-601a, R-744, R-717, and combinations thereof, and optionally (iii) at least one other compound selected from HFC-134, HFC-134a, HFC-125, HFC-32, HFC-152a, and combinations thereof. These compositions are useful as refrigerants in air conditioning, heat pumps, refrigeration, and / or chillers.

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit in which a first refrigerant circulates and an auxiliary heating unit in which a second refrigerant circulates, at least one of the first refrigerant and the second refrigerant may comprise at least one of a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.

Provided are a composition for a thermal cycle system containing 1,1,2-trifluoroethylene, which includes a working medium that can suppress the impact of global warming and has cycle performance that can replace R410A, and a thermal cycle system using the composition. A composition for a thermal cycle system and a thermal cycle system using the composition are provided. The composition includes a thermal cycle working medium containing 1,1,2-trifluoroethylene, CF3I, and at least one compound selected from hydrofluorocarbons, hydrofluoroolefins other than 1,1,2-trifluoroethylene, and hydrocarbons, and has a temperature gradient of 7°C or less.