99results about How to "Low global warming potential" patented technology

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises Z-1,2-difluoroethylene (Z-HFO-1132a). The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and power cycle working fluids.

Provided is a lubricant composition for a refrigerator, which is characterized by using a substance mainly containing a polyoxyalkylene glycol derivative and having a hydroxyl number of 5 mgKOH / g or less, as a base oil. Also provided is a compressor using such the lubricant composition for a refrigerator. The lubricant composition for a refrigerator is used for a refrigerator which uses a refrigerant having a specific structure such as an unsaturated fluorohydrocarbon and being usable in current air-conditioning systems for cars or the like. The lubricant composition for a refrigerator exhibits excellent compatibility with the refrigerant, while having excellent stability. The compressor uses such the lubricant composition for a refrigerator.

Provided is a lubricating oil composition for a refrigerator which uses a base oil including as the main component at least one kind of oxygen-containing compounds selected from polyoxyalkylene glycols, polyvinyl ethers, copolymers of poly(oxy)alkylene glycols or monoethers thereof and polyvinyl ethers, polyol esters, and polycarbonates. The lubricating oil composition for a refrigerator is used for a refrigerator that uses, as a refrigerant, a fluorine-containing organic compound, which is a refrigerant applicable to current car air conditioner systems or the like and has a specific polar structure, and has favorable sealing property, a low coefficient of friction factor in a sliding part, and excellent stability as well as excellent compatibility with the refrigerant.

It is to provide a lubricating oil composition for a refrigerating machine that has a low global warming potential, and that is used for a refrigerating machine using a refrigerant having a particular structure, such as an unsaturated fluorinated hydrocarbon compound, which is a refrigerant capable of being used for existing car air conditioner system, air conditioners and the like, and that has excellent compatibility with a refrigerant and excellent thermal and chemical stability, in which the lubricating oil composition is used for a refrigerating machine using a refrigerant containing at least one fluorine-containing organic compound selected from compounds represented by the following molecular formula (A), or a combination of the fluorine-containing organic compound and a saturated fluorinated hydrocarbon compound, and contains a base oil and a sulfur-containing aromatic compound: CpOqFrRs (A), wherein R represents any one of Cl, Br, I and H; p represents an integer of from 1 to 6; q represents an integer of from 0 to 2; r represents an integer of from 1 to 14; and s represents an integer of from 0 to 13, provided that when q is 0, p is from 2 to 6, and at least one carbon-carbon unsaturated bond is contained in the molecule.

To provide a composition for a heat cycle system, which comprises a working fluid for heat cycle which has a low global warming potential and high stability, and which can replace R410A, and a heat cycle system employing the composition.A composition for a heat cycle system, which comprises a working fluid for heat cycle containing 1,2-difluoroethylene, and a stabilizer for preventing deterioration of the working fluid for heat cycle, such as an oxidation resistance-improving agent, a heat resistance-improving agent or a metal deactivator, and a heat cycle system employing the composition for a heat cycle system.

A lubricating oil composition for refrigerators comprising a base oil which comprises as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane, and neopentyl glycol and a C4 to C20 aliphatic monocarboxylic acid and which has an acid value of 0.02 mgKOH / g or less and a hydroxyl value of 5 mgKOH / g or less. A compressor using the lubricating composition. The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability. The compressor uses the lubricating composition.

A lubricating oil composition for refrigerators including (A) a base oil containing as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane and neopentyl glycol and a C4 to C20 aliphatic monocarboxylic acid, (B) a phosphorus-based additive comprised of a phosphoric acid triester and / or a phosphorous acid triester, and (C) at least one acid scavenger selected from among glycidyl esters, glycidyl ethers and α-olefin oxides.The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability.

Provided is a lubricant composition for a refrigerator having the following characteristics: the composition being used for a refrigerator using a refrigerant having a specific structure such as an unsaturated fluorinated hydrocarbon compound serving as a refrigerant having a low global warming potential and usable particularly in current air-conditioning system for cars; the composition having excellent stability as well as excellent compatibility with the refrigerant; the composition including a base oil containing a polyoxyalkylene glycol derivative as a main component and 1 to 20% by mass of a monoepoxy compound based on the total amount of the composition; and the refrigerator using a refrigerant containing at least one kind of fluorine-containing organic compound selected from compounds represented by the molecular formula (A) CpOqFrRs or including a combination of the fluorine-containing organic compound and a saturated fluorinated hydrocarbon compound.

A homogeneous non-aqueous composition containing a fluorinated solvent, ozone, and optionally a co-solvent and the use of these compositions for cleaning and oxidizing substrates is described.

The present invention is able to provide a lubricating oil composition for compression refrigerating machine having excellent thermal / chemical stability even when used for a compression refrigerating machine using a saturated fluorinated hydrocarbon refrigerant having a low carbon number and a low global warming potential, by using a refrigerant containing a saturated fluorinated hydrocarbon having from 1 to 3 carbon atoms, which uses, as a base oil, an oxygen-containing organic compound composed of at least one member selected from a polyoxyalkylene glycol, a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol and a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol monoether and a polyvinyl ether, and a polyol ester, each having a hydroxyl value of not more than 15 mgKOH / g.

To prevent a bellows of a vacuum circuit breaker of tank type from being damaged, reduce the size of the vacuum circuit breaker, and prevent global warming from occurring. A high-pressure dry air is fed into a ground tank (2). A movable contact case (8) is supported at one end inside the ground tank (2) through an insulating supporting tube (5) and an insulating support (7), and a fixed contact case (9) is supported at the other end inside the ground tank (2) through a supporting insulator (6). A vacuum interrupter (10) is supported between the contact cases (8, 9). Bush terminals (20, 21) are connected to the top ends of conductors (35, 15) the bottom ends of which are connected to the contact cases (8, 9). The conductors (35, 15) are surrounded by the bushes (16, 17). The movable conductor (35) is formed in a pipe shape. Hermetical seal parts (37 to 41) are so formed that the inner peripheral side of a bellows (25) the outside of which is vacuum, the inside of the movable conductor (35), the inside of the support (7), and the inside of the movable contact case (8) is kept at the atmospheric pressure and the inside of the insulating support tube (5) is filled with the high-pressure dry air.

It is to provide a lubricating oil composition for a refrigerating machine that has a low global warming potential by including in a base oil an organic compound having two or more non-conjugated double bonds in the molecule thereof, and that is particularly preferably used for a refrigerating machine using a refrigerant having a particular structure, such as an unsaturated fluorinated hydrocarbon compound, which is a refrigerant capable of being used for existing car air conditioner system, air conditioners and the like, and that has excellent compatibility with the refrigerant and excellent thermal and chemical stability.

Provided is a lubricant composition for a refrigerator having the following characteristics: the composition being used for a refrigerator using a refrigerant having a specific structure such as an unsaturated fluorinated hydrocarbon compound serving as a refrigerant having a low global warming potential and usable particularly in current air-conditioning system for cars; the composition having excellent stability as well as excellent compatibility with the refrigerant; the composition including a base oil containing a polyoxyalkylene glycol derivative as a main component and 1 to 20% by mass of a monoepoxy compound based on the total amount of the composition; and the refrigerator using a refrigerant containing at least one kind of fluorine-containing organic compound selected from compounds represented by the molecular formula (A) CpOqFrRs or including a combination of the fluorine-containing organic compound and a saturated fluorinated hydrocarbon compound.

Disclosed are compositions and methods for extracting oils comprising contacting material containing the oil with a composition comprising 1-chloro-3,3,3-trifluoropropene in an amount sufficient to dissolve at least a portion of the oil, and separating the solvent / oil solution from the material.

A composition for a heat cycle system and a heat cycle system employing the composition are provided. The composition has favorable lubricating properties and contains a working fluid for heat cycle and a refrigerant oil. The working fluid contains an unsaturated fluorinated hydrocarbon compound having a specific structure. The working fluid has a low global warming potential and can replace R410A. The refrigerant oil has a breakdown voltage of at least 25 kV, a hydroxyl value of at most 0.1 mgKOH / g, and an aniline point of at least −100° C. and at most 0° C.

The invention discloses a fluorine-containing heat transfer fluid. The fluid comprises any one or more structures as described in a formula (I) and / or any one or more structures as described in a formula (II). In the formulas, R1 is H, F or an alkoxy group, R2 is H, F, Cl or an alkoxy group, R3 and R4 are F or alkoxy groups, R5 is H, F or an alkoxy group, and the alkoxy group is -O-C<x>F<y>H<2x+1-y>; and x is a natural number, y is a non-negative integer, and n is 1, 2 or 3. The invention also discloses a preparation method of the fluorine-containing heat transfer fluid. The preparation methodcomprises the step of carrying out a nucleophilic substitution reaction on halogenated cycloolefin and alcohol to prepare the fluorine-containing heat transfer fluid as shown in the formula (I). Thefluorine-containing heat transfer fluid provided by the invention has the advantages of high dielectric strength, low toxicity, low global warming potential, good heat transfer performance, high boiling point, simple synthetic route and high synthetic efficiency, and is suitable for being used as a heat transfer fluid.

A flushing solvent for flushing an HVAC-R system is a mixture of hydrofluoroether, acetone, t-Butyl acetate, and trans 1,2 Dichloroethylene.

A composition for a heat cycle system having favorable lubricating properties is provided. A heat cycle system employing the composition is also provided. The composition contains a working fluid for heat cycle, which has a low global warming potential and can replace R410A. The working fluid contains an unsaturated fluorinated hydrocarbon compound having a specific structure and a refrigerant oil having a breakdown voltage of at least 25 kV, a hydroxy value of at most 0.1 mgKOH / g, and a minimum temperature on the high temperature side of the phase separation temperature from the working fluid of at least 35° C. and a maximum temperature on the low temperature side of at most −60° C.

Polymeric foam and polymeric foam products that contain a foamable polymer material, at least one blowing agent, an infrared attenuating agent, and a polystyrene / polyethylene oxide copolymer are provided. In exemplary embodiments, the blowing agent contains an HFC. The maleic anhydride-styrene copolymer grafted with polyethylene oxide increases the cell size of the polymer foam and offsets or even negates the decreased cell size caused by an HFC blowing agent and / or infrared attenuating agents. In addition, the copolymer of maleic anhydride-styrene grafted with polyethylene oxide has a positive affect on the processability of the blowing agent(s) in the composition by both widening the process window and enhancing the solubility of the blowing agent in the polymer melt. Thus, the polystyrene / polyethylene oxide copolymer present in the inventive composition acts as a cell enlarger, a plasticizer, and a processing aid. A method of forming an extruded foam product is also provided.

To provide a composition for a heat cycle system having favorable lubricating properties and comprising a working fluid for heat cycle which has a low global warming potential and which can replace R410A and a heat cycle system employing the composition.A composition for a heat cycle system comprising a working fluid for heat cycle containing trifluoroethylene, and a refrigerant oil (for example, an ester refrigerant oil, an ether refrigerant oil, a polyglycol refrigerant oil or a hydrocarbon refrigerant oil), and a heat cycle system employing the composition for a heat cycle system.

Provided is a refrigerating machine oil composition, which is to be used for a refrigerant including a mixture of an unsaturated fluorinated hydrocarbon compound, a saturated fluorinated hydrocarbon compound and CO2, contains a base oil which includes at least one selected from a polyoxyalkylene glycol, a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol or a monoether thereof and a polyvinyl ether, and a polyol ester and has a kinematic viscosity at 100° C. of 2 mm2 / s or more and 50 mm2 / s or less and a hydroxyl value of 5 mgKOH / g or less, is able to be used for a refrigerating machine system using a refrigerant having a low global warming potential and usable especially for a car air conditioner or the like and including a mixture of an unsaturated fluorinated hydrocarbon compound, a saturated fluorinated hydrocarbon compound and CO2, and exhibits not only excellent compatibility with the refrigerant but also excellent stability.

It was found that a refrigerant mainly containing a carbon-carbon double bond-containing hydrofluoroolefin has a function to suppress abrasive wear, compared to conventional HFC-based refrigerants, because the hydrofluoroolefin generates iron fluoride especially on the surface of the vane and piston, where sliding force is severe, from hydrogen fluoride, even if it is generated in reaction with water and oxygen. It is possible to reduce abrasive wear, by using a refrigerant containing as the base component a hydrofluoroolefin as operating refrigerant and a refrigeration oil 3 miscible with the refrigerant and a vane 10 made of a high-speed tool steel and sintered and quenched, because hydrogen fluoride generated by decomposition of the refrigerant in the region of a vane tip region 10a and a piston 9 peripheral surface, where sliding force is severe is converted to iron fluoride. It is also possible to obtain a hardened structure containing carbides of W, Mo, Cr and V dispersed in a fine martensite matrix and produces the rotary compressor more cost-effectively by quenching and sintering the vane 10.

Methods of preparing polyurethane and polyisocyanurate foams comprising the step of reacting and foaming a mixture of ingredients which react to form the polyurethane or polyisocyanurate foams in the presence of a blowing agent, wherein said blowing agent comprises an azeotrope-like composition consists essentially of 1,1,1,3,3-pentafluoropropane and n-pentane, as well as foams and foamable compositions comprising the azeotrope-like composition.

The invention provides a multi-element mixed refrigerant which comprises 3,3,3-trifluoropropene and propane. The molar percentage concentration of 3,3,3-trifluoropropene is 5-85%, and the molar percentage concentration of propane is 15-95%. The multi-element mixed refrigerant is suitable for a stand-alone compressing and refrigerating system, has the ozone depletion potential (ODP) of zero, and cannot harm the atmospheric ozone layer and has quite small global warming potential (GWP) after being used for a long time. In addition, since the multi-element mixed refrigerant comprises 3,3,3-trifluoropropene and propane, for a two-element mixture, azeotropic refrigerating working substances can keep the stable evaporating working state under the boiling point, and convenience is provided for the injection of the refrigerant and the maintenance of the refrigerating system. In addition, the multi-element mixed refrigerant has a small pressure ratio, and the efficiency of a compressor can be effectively improved by reducing the pressure ratio.

A method and composition for transforming a latent physiological biometric into a visible physiological biometric are provided, the method comprising: providing a latent biometric disposed on a surface of an article, wherein said biometric comprises at least one eccrine-derived compound; contacting said latent biometric with a developing solution, wherein said developing solution comprises at least one imaging reagent selected from ninhydrin and 1,8-diazafluoren-9-one and a carrier solvent comprising at least one C3-C4 hydrofluorocarbon; and reacting said imaging reagent with said eccrine-derived compound to produce a visible physiological biometric.

A chiller system is provided including a vapor compression circuit consisting of a fluidly coupled compressor, condenser, expansion valve, and evaporator. A refrigerant circulates through the vapor compression circuit. The evaporator is a direct exchange heat exchanger. Refrigerant provided at an outlet of the evaporator is a two-phase mixture including liquid refrigerant and vapor refrigerant. The vapor refrigerant comprises less than or equal to 85% of the two-phase mixture. A refrigerant to refrigerant heat exchanger is fluidly coupled to the circuit. The refrigerant to refrigerant heat exchanger is configured to convert the vapor refrigerant provided at the outlet of the evaporator into a superheated vapor.

The present invention is able to provide a lubricating oil composition having excellent thermal / chemical stability even when used for a compression refrigerating machine using a saturated fluorinated hydrocarbon refrigerant having a low carbon number and a low global warming potential, by using a refrigerant containing a saturated fluorinated hydrocarbon having from 1 to 3 carbon atoms, which uses, as a base oil, an oxygen-containing organic compound composed of at least one member selected from a polyoxyalkylene glycol, a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol and a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol monoether and a polyvinyl ether, and a polyol ester, each having a water content of not more than 500 ppm by mass.