Agc Inc.

Asahi Glass Company, Limited

Denso Corporation

National Institute of Advanced Industrial Science and Technology

Katsuya Ueno

Masato Fukushima

Hidekazu Okamoto

Tetsuo Otsuka

Satoshi Kawaguchi

Toshiyuki Tanaka

Yoshinobu Kadowaki

Susumu Saito

Hiroshi Yamamoto

Mai Tasaka

Hirokazu Takagi

Hiroaki Mitsuoka

Tatsuhiro Nogami

Daisuke Shirakawa

Akio Ogawa

Atsushi Watakabe

Takeaki Arai

Hiroki Hayamizu

Katsuya Fujii

Jun-ichi Tayanagi

Hikaru Ono

Yasuhiro Suzuki

Shin Nishida

Satoru Hommura

Masamichi Ippommatsu

Kazuhiko Yamada

Ichiro Terada

Shoji Furuta

Yasuhide Kawaguchi

Nobuyuki Kasahara

Atsushi Tsuji

Shintaro Fukunaga

Masamichi Ipponmatsu

Fusaaki Takeo

Kazuyoshi Kurashima

Yutaka Ohyama

Mayako Takahashi

Teruhiko Yasuda

Shigeo Kajitani

Kenji Takizawa

To provide a fluid composition and a refrigerant composition having flammability suppressed; and an air conditioner in which restrictions in order to inhibit combustion of the refrigerant composition are reduced and it is thereby possible to omit or simplify measures for inhibiting combustion of the refrigerant composition. The fluid composition is either a composition (I) comprising at least one component (A) selected from the group consisting of alkanes, halogenated alkanes and alkenes and at least one component (B) selected from halogenated alkenes, or a composition (II) (excluding the composition (I)) comprising two or more ingredients (B) selected from halogenated alkenes. The fluid composition has a combustion inhibiting effect as defined by &#x2212;100&#xd7;{(measured maximum burning velocity)&#x2212;(estimated maximum burning velocity)}/(estimated maximum burning velocity), of at least 10%.

Fluid composition, refrigerant composition and air conditioner

An object of the present invention is to provide, as a working fluid to be used for a heat cycle system, a working fluid for heat cycle that has cycle performance replaceable with that of R410A, and at the same time, has a small burden on an apparatus, low flammability, suppressed self-decomposition, and less effect on global warming, and therefore, is usable stably even if leaked, a composition for heat cycle system containing the same, and a heat cycle system using the composition. The working fluid for heat cycle contains trifluoroethylene, difluoromethane, and at least one selected from 1,1-difluoroethane, fluoroethane, propane, propylene, carbon dioxide, 2,3,3,3-tetrafluoropropene, and (E)-1,3,3,3-tetrafluoropropene at mass ratios satisfying predetermined expressions and at a ratio of the total content to be 90 to 100 mass % relative to the total amount of the working fluid and has a temperature glide of 10&#xb0; C. or less.

Working fluid for heat cycle, composition for heat cycle system, and heat cycle system

A heat cycle system with high durability, which employs a working fluid for heat cycle containing trifluoroethylene having a low global warming potential. A heat cycle system, having a circulation path in which a working fluid for heat cycle containing trifluoroethylene is circulated from a compressor via a condenser, an expansion valve and an evaporator to the compressor, wherein the compressor has in its electrical circuit a current-limiting apparatus capable of limiting the current within 6 milliseconds after the heat cycle system enters into an abnormal operation state.

Heat cycle system

A working fluid for heat cycle, wherein the global warming potential is less than 300; the product of the relative coefficient of performance and the relative refrigerating capacity is at least 0.820 relative to R410A in a standard refrigerating cycle under conditions of an evaporation temperature of 0&#xb0; C., a condensing temperature of 40&#xb0; C., a supercoiling degree of 5&#xb0; C. and a degree of superheat of 5&#xb0; C.; the relative compressor discharge gas pressure is at most 1.100; the lower limit of the combustion range by method A in High Pressure Gas Safety Act is at least 5 vol %; and the pressure will not exceed 2.00 MPaG in a combustion test by method A in High Pressure Gas Safety act under 0.98 MPaG at 250&#xb0; C.

There are provided an air-conditioner working fluid for electric vehicle providing sufficient cycle performance in practical use in an electric vehicle, in particular, sufficient cycle performance also in the heating time, while suppressing influence on global warming, and usable without greatly changing an air-conditioner device for a conventional working fluid, for example, HFC-134a or HFO-1234yf, and an air-conditioner working fluid composition for electric vehicle containing the same. The air-conditioner working fluid for electric vehicle contains trifluoroethylene, difluoromethane and 1,3,3,3-tetrafluoropropene, wherein a percentage of a total amount of trifluoroethylene, difluoromethane and 1,3,3,3-tetrafluoropropene with respect to a total amount of the working fluid is more than 90 mass % and 100 mass % or less.

Air-conditioner working fluid for electric vehicle and air-conditioner working fluid composition for electric vehicle

To provide a method for producing an aqueous liquid containing a vinyl polymer, of which the production efficiency is high, without lowering the yield of the vinyl polymer. When removing a hydrophilic organic solvent from a mixed liquid comprising a vinyl polymer, the hydrophilic organic solvent and water to produce an aqueous liquid containing the vinyl polymer, a liquid phase and a gas phase are formed in a closed container, a part of the liquid of the liquid phase is formed into small droplets and brought into contact with the gas phase to vaporize the hydrophilic organic solvent, and the vaporized hydrophilic organic solvent is removed from the closed container. Specifically, for example, a closed containerhaving a liquid inlet, a gas outlet, a liquid outlet, a liquid inletand a liquid outletwhich are connected and having an external circulating system provided with means to control the temperature and the pressure of liquid, is filled with a mixed liquidto form a liquid phaseand a gas phase, the mixed liquidof the liquid phaseis circulated from the liquid outletto the external circulating system, and the temperature and the pressure of the mixed liquidin the external circulating systemare controlled to conditions such that the hydrophilic organic solvent is easily vaporized in liquid droplets in the gas phase, followed by discharging the mixed liquidin the form of the small droplets from the liquid inletto the gas phaseand draining the gas in the gas phasefrom the gas outlet

Method for producing vinyl polymer-containing aqueous liquid and method for producing water/oil resistant agent

To provide a composition for a heat cycle system having less influence over the ozone layer, having a low global warming potential and having excellent durability, and a heat cycle system. A composition for a heat cycle system comprising a working fluid containing trifluoroethylene and difluoromethane, and a lubricating oil, wherein the interaction distance (Ra) between trifluoroethylene and the lubricating oil as determined from the Hansen solubility parameters is shorter than the interaction distance (Ra) between difluoromethane and the lubricating oil.

Composition for heat cycle system, and heat cycle system

To provide a heat cycle system with high durability, which employs a working fluid for heat cycle containing trifluoroethylene having a low global warming potential. A heat cycle systemwhich has a circulation path in which a working fluid for heat cycle containing trifluoroethylene is circulated from a compressorvia a condenseran expansion valveand an evaporatorto the compressorwherein a conductor wire provided in the circulation path is covered with a heat resistant material having a heat resistance of at least 300&#xb0; C.

A working fluid for heat cycle contains trifluoroethylene and 2,3,3,3-tetrafluoropropene. The proportion of the total amount of trifluoroethylene and 2,3,3,3-tetrafluoropropene based on the entire amount of the working fluid is higher than 90 mass % and at most 100 mass %. The proportion of trifluoroethylene based on the total amount of trifluoroethylene and 2,3,3,3-tetrafluoropropene is at least 21 mass % and at most 39 mass %. The working fluid has a low global warming potential and suppressed self-decomposition property. A composition for a heat cycle system contains the working fluid and a heat cycle system employs the composition.

To provide a working fluid which has cycle performance sufficient as an alternative to R410A while the influence over global warming is sufficiently suppressed, which does not significantly increase the load to an apparatus as compared with a case where R410A is used, and which can be stably used continuously without any special measures, a composition for a heat cycle system contains the working fluid, and a heat cycle system employs the composition. A working fluid for heat cycle, wherein the global warming potential is less than 300; the product of the relative coefficient of performance and the relative refrigerating capacity is at least 0.820 relative to R410A in a standard refrigerating cycle under conditions of an evaporation temperature of 0&#xb0; C., a condensing temperature of 40&#xb0; C., a supercoiling degree of 5&#xb0; C. and a degree of superheat of 5&#xb0; C.; the relative compressor discharge gas pressure is at most 1.100; the lower limit of the combustion range by method A in High Pressure Gas Safety Act is at least 5 vol %; and the pressure will not exceed 2.00 MPaG in a combustion test by method A in High Pressure Gas Safety act under 0.98 MPaG at 250&#xb0; C.

To provide a working fluid for heat cycle which has a small temperature glide, a sufficiently low discharge temperature, high durability and less influence over global warming, and with which a heat cycle system excellent in the system maintenance properties and the cycle performance (capacity) is achieved, a composition for a heat cycle system, and a heat cycle system. A working fluid for heat cycle, which contains trifluoroethylene and difluoromethane, wherein the proportion of the total amount of trifluoroethylene and difluoromethane based on the entire amount of the working fluid for heat cycle is higher than 90 mass % and at most 100 mass %, and the mass ratio represented by trifluoroethylene/difluoromethane in the working fluid for heat cycle is from 41/59 to 59/41, a composition for a heat cycle system, and a heat cycle system employing the composition.

To provide a method for stably and efficiently producing a working fluid which has less influence over global warming and which can be stably used by a usual operation even though it contains trifluoroethylene (HFO-1123) excellent in the cycle performance. A method for producing a working fluid containing HFO-1123 in a proportion of at most 70 mol %, which comprises mixing a first component containing HFO-1123 in a proportion of higher than 70 mol % stored in a first container, and a second component having no self-decomposition property stored in a second container, by supplying the first component to the second container, by supplying the second component to the first container, or by supplying both the first component and the second component to a separate third container, respectively under the predetermined conditions.

Method for producing working fluid

A composition for a heat cycle system having less influence over the ozone layer, a low global warming potential, and excellent stability and durability is provided. A heat cycle system using the composition is also provided. The composition contains a working fluid and a phosphoric acid ester. The working fluid contains trifluoroethylene and difluoromethane. An interaction distance (Ra) between the working fluid and the phosphoric acid ester as determined from the Hansen solubility parameters is at most 15.

Provided is a method for producing an ethylene-tetrafluoroethylene copolymer powder, whereby it is possible to simply and inexpensively produce an ethylene-tetrafluoroethylene copolymer powder excellent in handling efficiency from a slurry having an ethylene-tetrafluoroethylene copolymer dispersed in a fluorinated organic solvent. A method for producing an ethylene-tetrafluoroethylene copolymer powder, which comprises feeding, at a feeding linear velocity exceeding 0.10 m/sec., a slurry having ethylene-tetrafluoroethylene copolymer microparticles dispersed in a specific fluorinated organic solvent, to a centrifugal thin-film evaporatorhaving a cylindrical heat-conducting barrel, a first heating portionfor heating the heat-conducting barrel, and a rotary stirring portionwherein a rotary shaftis provided with stirring bladesfor rotation in the heat-conducting barrelso that a thin film is formed on the inside wall surfaceof the heat-conducting barrel, to obtain an ethylene-tetrafluoroethylene copolymer powder.

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Chiyoda-ku, Japan

Katsuya Ueno