JP2000510883A - Decafluoropentane composition - Google Patents

Abstract

  (57) [Summary] Useful as detergents, refrigerants, aerosol sprays, heat transfer media, gas dielectrics, fire extinguishers, blowing agents for polyolefins and polyurethanes, and as power cycle working fluids1, An azeotropic or azeotropic composition of an effective amount of 1,1,2,3,4,4,5,5,5-decafluoropentane, trans-1,2-dichloroethylene, cyclopentane and methanol, or an azeotropic Alternatively, 1,1,1,2,3,4,4,5,5,5-decafluoropentane, trans-1,2-dichloroethylene and cyclopentane forming an azeotropic composition are disclosed.

Description

DETAILED DESCRIPTION OF THE INVENTION                         Decafluoropentane compositionField of the invention   The present invention relates to fluorocarbon compositions or mixtures, and more particularly to 1,1,1, 2,3,4,4,5,5,5-decafluoropentane, trans-1,2-dichloroethylene, cycle An azeotropic or azeotropic composition containing effective amounts of lopentane and methanol, or Or 1,1,1,2,3,4,4,5,5,5-decafluoro to form an azeotropic or azeotropic composition It relates to pentane, trans-1,2-dichloroethylene and cyclopentane. this Such compositions include detergents, blowing agents for polyolefins and polyurethanes, refrigerants, air Sol spray, heat transfer media, gas dielectric, fire extinguisher, power circulation Power cycle working fluids, polymerization media, granular release fluids (partic ulate removal fluids, carrier fluids, buffing abrasives, and displacement desiccants (disp Useful as lacement drying agents).Technical background of the invention   Fluorocarbons have many uses, one of which is, for example, electronic circuit boards. A cleaning agent or solvent for cleaning. Electronic components on the circuit board with flux Cover the entire side, then place the flux-coated substrate over the preheater and remove the molten solder. By passing through, it is soldered to the circuit board. The flux is Cleans conductive metal parts and promotes melting of solder, but removes with cleaning agents. The residue that must be removed is left on the circuit board. Fluorocarbons are also steam degreased A useful cleaning agent in vapor degreasing operations.   Preferably, the cleaning agent has a low boiling point, is non-flammable, low toxic, and Flux and flux residue without damaging the substrate Should be highly soluble so that In addition, contains fluorinated hydrocarbons Cleaning agents should be azeotropic or azeotropic so that they do not tend to fractionate on boiling or evaporation. It is desired. If the cleaning agent is not azeotropic or azeotropic, Volatile components evaporate preferentially and cleaning agents become flammable or lower Rosin flux solubility and lower inertness to electrical components being cleaned Would have almost undesired dissolution characteristics. Cleaning agents are usually re-steamed Azeotropic properties for steam degreasing operations as they are distilled and reused in the final rinse Is also desired.   Fluorohydrocarbons can also be used as refrigerants. In refrigeration applications, Refrigerant is used in shaft seals, hose connections, solder joints, and broken lines. Often lost during operation through leaks. In addition, the refrigerant It may be released to the atmosphere during maintenance procedures in refrigeration equipment. Therefore, the refrigerant As a single fluorocarbon or a mixture containing one or more fluorohydrocarbons It is desirable to use azeotropic or azeotropic compositions. One or more fluorides Some of the non-azeotropic compositions containing hydrocarbons can also be used as refrigerants The composition changes when a part of the refrigerant charge leaks to the atmosphere or is released, Or it has the disadvantage of fractionation. If non-azeotropic compositions contain flammable components Due to such changes in the composition, the formulation will become flammable. composition Refrigeration equipment operation is also adversely affected by changes in product and vapor pressure resulting from fractionation. Will receive.   The azeotropic or azeotropic composition of the fluorocarbon is a closed-cell polyurethane, It is also used as a blowing agent in the manufacture of foams and thermoplastic foams. Insulation Foams require foaming agents and not only foam the polymer, but more importantly Utilizing the low vapor thermal conductivity of the blowing agent, which is an important property for insulation value.   Aerosol products can be used as single high pressure gas vapor pressure attenuators in aerosol systems. Use both the fluorocarbon component and the azeotropic or azeotropic composition of the fluorocarbon component. To use. An azeotropic or azeotropic composition having a substantially unchanged composition and vapor pressure is Useful as solvents and propellants in aerosols.   An azeotropic or azeotropic composition comprising a fluorinated hydrocarbon may comprise a heat exchange medium, a gas dielectric, Power circulating working fluid such as fire extinguisher, heating pump, inert medium for polymerization reaction, metal surface Fluid to remove particles from the surface and a thin film of lubricant, for example on metal parts It is also useful as a carrier fluid that can be used to provide.   Azeotropic or azeotropic compositions containing fluorohydrocarbons are further polished like metals Gem or metal parts as a buffing cleaner to remove buffing compounds from damaged surfaces Of using chlorine-based developing agents as a replacement drying agent to remove water from products As a resist developer in circuit manufacturing technology for, and for example, 1,1,1-tri- With chlorohydrocarbons such as chloroethane or trichloroethylene It is useful as a stripper for a photoresist when used for a photoresist.Summary of the Invention   The present invention relates to 1,1,1,2,3,4,4,5,5,5-decafluoropentane, trans-1,2-dicane. A mixture containing an effective amount of a mixture of loroethylene, cyclopentane and methanol. Azeotropic or azeotropic compositions, or 1,1,1,2, which form an azeotropic or azeotropic composition 3,4,4,5,5,5-decafluoropentane, trans-1,2-dichloroethylene and Regarding the discovery of Clopentane.Detailed description of the invention   The compositions of the present invention can form 1,1,1,2,3,4,4,4 to form an azeotropic or azeotropic composition. 5,5,5-decafluoropentane (HFC-43-10mee, CF_ThreeCHFCHFCF_TwoCF_Three, Boiling point = 54.6 ° C), trans-1,2-dichloroethylene (trans-1,2-DCE, CHCl = CHCl, boiling point = 48 ° C), cyclopentane (cyclo- (CH_Two)_Five, Boiling point = 49 ° C) and methanol (CH_Three OH, azeotropic or azeotropic group containing an effective amount of (boiling point = 65 ° C) It is a product or a mixture.   1,1,1,2,3,4,4,5,5,5-decafluoropentane, trans-1,2-dichloroethylene , Cyclopentane and methanol or form azeotropic or azeotropic compositions 1,1,1,2,3,4,4,5,5,5-decafluoropentane, trans-1,2-dichloroethylene Effective amounts of pentane and cyclopentane are based on the weight And includes:   HFC-43-10mee, trans-1,2-DCE, substantial of cyclopentane and methanol The azeotropic or azeotropic composition, which boils constantly at about 40 to 70 weight percent, HFC-43-10mee, about 15 to 50 weight percent trans-1,2-DCE, about 1 to 2 5 weight percent cyclopentane and about 1 to 10 weight percent methano Contain These compositions are substantially at atmospheric pressure at about 33.8 ± 1.2 ° C. Boil. A preferred composition comprises about 45 to 65 weight percent HFC-43-10mee About 20 to 30 weight percent trans-1,2-DCE, about 10 to 20 weight percent. Centrifugal cyclopentane and about 2 to 8 weight percent methanol You. A more preferred composition is an azeotrope with about 57.7 weight percent HF C-43-10mee, about 22.1 weight percent trans-1,2-DCE, about 16.0 weight percent. Percent cyclopentane and about 4.2 weight percent methanol. And boil at about 33.8 ° C. at substantially atmospheric pressure.   Substantially constant boiling of HFC-43-10mee, trans-1,2-DCE and cyclopentane The azeotropic or azeotropic composition comprises about 35 to 75 weight percent HFC-43-10mee. , About 10 to 50 weight percent trans-1,2-DCE and about 5 to 25 weight percent. -Cent cyclopentane. These compositions are substantially at atmospheric pressure at about Boiling at 34 ° C. A preferred composition comprises about 40 to 70 weight percent HFC- 43-10mee, about 15 to 45 weight percent trans-1,2-DCE and about 10 to Contains 20 weight percent cyclopentane. More preferred compositions are azeotropic About 62.9 weight percent HFC-43-10mee, about 19.9 weight percent Cent trans-1,2-DCE and about 17.2 weight percent cyclopentane Contains and boils at about 34 ° C. at substantially atmospheric pressure.   For the purposes of the present invention, an “effective amount” is an azeotropic or azeotropic composition when combined. It is defined as the amount of each component of the inventive composition resulting from the formation of the product. This definition is Azeotropic or azeotropic compositions at different pressures, but containing As long as they have different boiling points, the amount depends on the pressure applied to the composition. It may change accordingly.   Thus, an effective amount may be azeotropic or azeotropic at pressures other than those described here. Including the amount expressed in weight percent of each component of the composition of the present invention forming the composition. No.   Depending on the "azeotropic or azeotropic" composition, 2 or 3 behave as a single substance Means a constant boiling, or substantially constant boiling, liquid mixture of the above substances You. One way to characterize an azeotropic or azeotropic composition is by partially evaporating the liquid. Or the vapor produced by the distillation is substantially identical to the vaporized or distilled liquid Having a composition, ie, the mixture distills / refluxes without substantial compositional change That is. Constant boiling, characterized as being azeotropic or azeotropic, Is a substantially constant boiling composition, compared to the boiling point of a non-azeotropic mixture of the same components. Represents either the highest or lowest boiling point.   For the purposes of this discussion, azeotropic or constant boiling is essentially azeotropic or essentially boiling. It is also intended to mean constant boiling. In other words, the meaning of these terms Included are not only the true azeotropes described above, but also the same components in different proportions. Other compositions that have and are part of the same azeotropic system And, as well as equivalent compositions that are azeotropic in their properties, at other temperatures and temperatures. It is a true azeotrope at pressure and pressure. Well known in the prior art Thus, there is a range of compositions that contain the same components as an azeotrope, In addition to exhibiting properties substantially equivalent to those for medium or other uses, A true azeotropic composition and fruit with respect to their tendency to segregate or fractionate in boiling or boiling. It also represents qualitatively equivalent characteristics.   After 50 weight percent of the composition has been removed, such as by evaporation or boiling, the absolute When measured in places, the initial composition and 50 weight percent of the initial composition The difference in vapor pressure from the composition remaining after being removed is about 10%. If smaller, the prior art recognizes that the composition is azeotropic. Absolute Unit of measure of pressure and, for example, psia, barometric pressure, bar, torr, square Dyne per centimeter, millimeters of mercury, inches of water, and Means other equivalent terms well known in the art. Azeotrope present If so, after the first composition and 50 weight percent of the first composition have been removed There is no difference in the vapor pressure from the remaining composition.   Appears in many ways, depending on the conditions selected, by some of the following criteria It is possible to characterize the effect of a constant boiling mixture:   (A) the literal term "azeotrope is simultaneously clear, restrictive and constant   A, B, C (and D) for this only composition of matter that is a boiling composition   . . . ), An azeotrope of A, B, C (and D ...)   Can be defined as a compound,   (B) at different pressures, the composition of a given azeotrope is at least   And the change in pressure is such that the boiling point temperature also changes at least somewhat.   This will be well known to those skilled in the art. Therefore, A, B, C (   And D. . . ) Azeotropes may vary depending on temperature and / or pressure   It represents the only type of relationship with the composition. Therefore, rather than a fixed composition   A range of compositions is often used to define an azeotrope,   (C) The composition is a specific weight percent relationship of A, B, C (and D ...)   Or as a mole percent relationship, but   Sometimes such a particular value indicates only one particular relationship, and   Above, the continuation of such a relationship represented by A, B, C (and D ...)   Being real for a given azeotrope that changes under the influence of force   Is recognized or   (D) The azeotropic mixture of A, B, C (and D) has a boiling point at a given pressure.   By defining the composition as a more characterized azeotrope,   Limited by the analyzers that can be used, and is only considered accurate   Without unduly limiting the scope of the invention by the composition represented by any particular numeral   The characteristic can be represented by giving the characteristic to be identified.   The following quaternary and ternary compositions have mixtures within this range at substantially atmospheric pressure Have a substantially constant boiling point, and are characterized as azeotropic or azeotropic. Is done. Since the boiling is substantially constant, the mixture is separated to a large extent by evaporation. There is no tendency to stay. After evaporation, there is a slight difference between the composition of the vapor and the composition of the original liquid phase. There is only a difference. This difference is considered as the vapor and liquid phase compositions being substantially identical. That is to say. Thus, any composition within this range is a true four component And characterization of the azeotrope of the three components.       1. About 40 to 70 weight percent HFC-43-10mee, about 15 to 50 weight           Volume percent trans-1,2-DCE, about 1 to 25 weight percent           Clopentane and about 1 to 10 weight percent methanol;           And preferably about 45 to 65 weight percent HFC-43-10mee,           About 20 to 30 weight percent trans-1,2-DCE, about 10 to 20           Weight percent cyclopentane and about 2 to 8 weight percent           Methanol; and       2. About 35 to 75 weight percent HFC-43-10mee, about 10 to 50 weight           Volume percent of trans-1,2-DCE and about 5 to 25 weight percent           G cyclopentane; and preferably from about 40 to 70 weight parts           St. HFC-43-10mee, about 15 to 45 weight percent trans-1,2           -DCE and about 10 to 20 weight percent cyclopentane.   The following quaternary and ternary compositions are substantially at atmospheric pressure, within the precision of the fractionation process. As a true four component and three component azeotrope.       1. About 57.7 weight percent HFC-43-10mee, about 22.1 weight percent           Trans-1,2-DCE, about 16.1 weight percent cyclopentane           And about 4.2 weight percent methanol; and       2. About 62.9 weight percent HFC-43-10mee, about 19.9 weight percent           Trans-1,2-DCE and about 17.2 weight percent           Pentane.   The aforementioned azeotropes have almost zero ozone-depletion potential. potentials).   The azeotropic or azeotropic compositions of the present invention have, due to their azeotropic properties, a vapor effluent ( Simple recovery and reuse of solvent from vapor defluxing and degreasing operations To As a specific example, the azeotrope of the present invention is described in U.S. Patent No. 3,881,949. Can be used in the cleaning process as described or buffed Can be used as a detergent.   Further, the mixture can be used as a resist developer in which chlorine-based developers are used, and Resist stripping without addition of appropriate halogen-containing carbon compounds  agents).   Another aspect of the present invention is to condense the refrigerant composition of the present invention, and then place it near the body. A refrigeration method comprising evaporating and cooling. As well Further, still another aspect of the present invention is to condense and heat the refrigerant of the present invention in the vicinity of the main body and heat it. After that, the heating method includes evaporating the refrigerant.   A further aspect of the present invention includes an activator and a propellant of the present invention, a propellant. Aerosol compositions comprising; and these sets by combining such components Including the manufacture of products. The present invention further provides a cleaning solvent set containing the azeotrope of the present invention. Including adult products.   The azeotropic or azeotropic composition of the present invention can mix or combine desired component amounts. And can be prepared by any suitable method, including: Preferred method Measure the amounts of the desired components and then combine them in a suitable container. And   Without further elaboration, using the above, one skilled in the art may, to the fullest extent, describe the present invention. I am convinced that it can be used. The following preferred specific examples are therefore: It is to be construed as merely illustrative and in any case limits the remainder of the disclosure. Not.   In the foregoing and in the following examples, all temperatures are expressed in degrees Celsius. Unless otherwise indicated, all parts and percentages are by weight.                                   Example 1 59.0 weight percent HFC-43-10mee, 20.0 weight percent trans- 1,2-DCE, 15.0 weight percent cyclopentane and 6.0 weight percent A solution containing methanol in a suitable container is prepared in a suitable container and carefully Was mixed.   The solution was run on a 5-plate Oldershaw distillation column with a 5: 1 reflux to removal ratio. Distilled. Head and pot temperatures were read directly to 1 ° C. The pressure is It was 758.75 mmHg. Distillate composition was measured by gas chromatography . The results obtained are summarized in Table 1.                                     Table 1         Temperature ℃ wt% distillation wt%Distillate head Or collection HFC-43-10mee trans-1,2-DCE Cyclopentane methanol Previous (PRE) 33 9.5 60.0 17.7 18.1 4.2 1 33 18.9 59.4 18.4 18.0 4.2 2 34 28.5 58.7 19.4 17.7 4.2 3 34 38.0 58.0 20.6 17.2 4.2 4 34 47.7 57.3 22.1 16.3 4.3 5 34 57.6 56.5 24.4 14.8 4.3 6 34 67.1 56.0 27.5 12.2 4.3 Rear (HELL)-89.5 77.0 6.4 0.5 16.1   Analysis of the above data indicates that the distillation has progressed and that the non- It always shows a small difference. Statistical analysis of the data, HFC-43-10mee, trans-1, A true quaternary azeotrope of 2-DCE, cyclopentane and methanol is at atmospheric pressure ( (With a 99 percent confidence limit). HFC-43-10mee = 57.7 ± 3.9 Trans-1,2-DCE = 22.1 ± 10.1 Cyclopentane = 16.0 ± 6.5 Methanol = 4.2 ± 0.2 Boiling point, ° C. = 33.8 ± 1.2                                   Example 2     65.1 weight percent HFC-43-10mee, 20.0 weight percent trans A solution containing -1,2-DCE and 14.9 weight percent cyclopentane is A two sump vapor degreaser was filled. solution Are carefully mixed and run for several hours at atmospheric pressure using 10: 1 reflux. Boiling at about 34 ° C. A sample is taken and analyzed by gas chromatography. The composition was measured. The results are summarized in Table 2.                                     Table 2                               Weight percenttime Cyclopentane trans-1,2-DCE HFC-43-10mee 0 14.9 20.0 65.1 1 17.4 19.7 62.9 2 17.4 19.5 63.1 3 17.3 20.0 62.7 4 16.9 20.4 62.7   Analysis of the above data shows that very small changes in solution composition as boiling progressed. Shows that Statistical analysis of the data includes HFC-43-10mee, trans-1,2-DCE and The true ternary azeotrope of cyclopentane and cyclopentane is at atmospheric pressure (99 percent confidence limit ) Has the following characteristics: HFC-43-10mee = 62.9 ± 0.6 Trans-1,2-DCE = 19.9 ± 1.2 Cyclopentane = 17.2 ± 0.7                                   Example 3   The container is filled with the initial composition at 25 ° C. and the vapor pressure of the composition is measured. Was done. 50% by weight of the initial composition, while the temperature is kept constant at 25 ° C. The composition is allowed to leak from the container until is removed, and 5 of the initial composition The vapor pressure of the composition remaining in the container when 0 weight percent has been removed is measured. Was. The results are summarized below. Refrigerant 0% by weight evaporation 50% by weight evaporation At vapor pressurecomposition psia (kPa) psia (kPa) 0% change HFC-43-10mee / trans-1,2-DCE / cyclopentane / methanol 58.9 / 25.9 / 11.3 / 3.9 10.31 71.1 10.31 71.1 0.0 70/15/10/5 10.23 70.5 10.03 69.2 2.0 40/50/5/5 10.15 70.0 9.71 66.9 4.3 50/24/25/1 10.02 69.1 9.09 62.7 9.3 60/29/1/10 10.12 69.8 9.80 67.6 3.2 64/20/10/6 10.28 70.9 10.19 70.3 0.9 62/20/12/6 10.28 70.9 10.23 70.5 0.5 59/20/15/6 10.28 70.9 10.26 70.7 0.2 55/25/14/6 10.29 70.9 10.27 70.8 0.2 35/50/10/5 10.13 69.8 9.41 64.9 7.1 51/40/4/5 10.23 70.5 10.16 70.1 0.7 51/41/3/5 10.22 70.5 10.14 69.9 0.8 HFC-43-10mee / tran-1,2-DCE / cyclopentane 58.8 / 30.9 / 9.3 9.14 63.0 9.14 63.0 0.0 35/50/15 9.01 62.1 8.15 56.2 9.5 75/10/15 8.92 61.5 8.65 59.6 8.2 75/20/5 9.07 62.5 8.86 61.1 2.3 65/20/15 9.09 62.7 9.06 62.5 0.3 46/40/14 9.10 62.7 8.97 61.8 1.4 75/24/1 9.03 62.3 8.87 61.2 1.8 50/44/6 9.10 62.7 9.03 62.3 0.8 50/42/8 9.11 62.8 8.87 61.2 2.6 65/10/25 8.90 61.4 8.86 61.1 1.8   The results of this example show that when 50% by weight of the initial composition has been removed, the residual composition At 25 ° C. is within about 10% of the vapor pressure of the initial composition Indicate that these compositions are azeotropic or azeotropic. The result is an azeotrope It also indicates that the composition of the compound shows a change as the temperature is changed.                                   Example 4   A suitable container was filled with the mixture shown in Table 3 and heated to boiling point. Stainless steel nuts and bolts, coated with various residues, It was hung in a container, then removed and observed. The results in Table 3 are Indicates that most of the residue has been completely removed.Table 3 Cleaning performance                 MIL-H-5606G Houghton Tapmatic Dow 200Weight percent Hydraulic oil Drawing oil (Draw) Cutting fluid silicone oil HFC-43-10mee / residue residue residue residue Trans-1,2-DCE / 100% 60% 100% 100% Cyclopentane / Removed Removed Removed Removed methanol/ 59/20/15/6                                   Example 5   A suitable container is filled with the solvent composition shown in Table 4 and mixed thoroughly at room temperature. Was combined. The oil is then added to each container until the solvent formulation no longer dissolves the oil. Added slowly. The oil used was a Mil-H5606G hydraulic fluid. Table 4 The results show that the oil is soluble in each mixture.                                     Table 4 Oil solubility Weight percent Solubility HFC-43-10mee / Trans-1,2-DCE / cyclopentane / methanol   64/20/10/6 1%   62/20/12/6 13%   59/20/15/6 15%                                   Example 6   Wax is applied to suitable metal parts and then boiled with ultrasound Submerged in the solvent composition. The solvent compositions are shown in Table 5. Two kinds of different softness Box was used. The results in Table 5 show that in each case the wax was almost completely Indicates that it has been removed.                                     Table 5 Wax removal                                                    % Wax removalWeight percent Softness 1 Softness 2 HFC-43-10mee / Trans-1,2-DCE / cyclopentane   75/10/15 90% 90%   65/20/15 98% 98%                                   Example 7   Mounting components such as multilayer ceramics (MLC), heat sinks, ICs and resistors Epoxy-glass rigid printed wiring measured 4 "x 6" with Board (PWB) is treated with Kester 135 RMA solder paste and rocking solder (Wave soldered). Corpane steam degreaser is boiled 54.5 weight in boil sump and rinse sump Percent HFC-43-10mee, 25.0 weight percent trans-1,2-DCE, 14 . 0 weight percent cyclopentane, 6.0 weight percent methanol and And 0.5% by weight of nitromethane until operating conditions are reached. I was left. PWB was cleaned in the steam de-oiler using the following cleaning cycle .   1. 2 minutes immersion in steam space over boiling oil sump   2. 2 minutes immersion in liquid in rinse oil reservoir   3. 2 minutes drying in the steam space over the rinsing oil reservoir   The substrate was visually inspected and found to be free of flux residue. Incidentally Substrates are inspected for ionic residues using an omegameter and About 8-9 well below the acceptable standard of 15 micrograms per square inch. It was found that there were micrograms per square inch of ionic residue.                                   Example 8   Rigid epoxy-glass printed wiring board with high (35%) rosin content flux Kester 186-35 rosin flux. Substrate pre-heated to 225 ° F It was preheated and then rock soldered at 500 ° F for 3 seconds. Then, Using a Branson 250 steam de-oiler with two different cycles of 4.5% by weight of HFC-43-10mee, 25.0% by weight of trans-1,2- DCE, 14.0 weight percent cyclopentane, 6.0 weight percent meta Washed with phenol and 0.5 weight percent nitromethane.Steam cycle 30 seconds in steam over boiling oil sump -30 seconds spraying and drying on boiling oil sump for 30 seconds 30 seconds in steam over boiling oil sump -30 seconds spraying and drying on boiling oil sump for 30 secondsLiquid cycle 30 seconds in steam over boiling oil sump -1.5 minutes to liquid in boiling oil sump -Spray for 30 seconds on boiling oil sump -1 minute to liquid in rinse oil sump   Both cycles were each performed simultaneously using three substrates. At 5x magnification Visual inspection showed no flux or white residue. Ionic pollution concentration Degrees were measured using an omega meter. The result is that the liquid cycle is 6.9 my With an ion concentration of gram / square inch and a steam cycle of 4.8 mi. Gram / square inch, which are 15 Well below the acceptable standard of gram per square inch.                                   Example 9   Baron Blakes has a set of elctromechanical relays lee Cleaned in the steam oil debris, dust, light oil and small amounts of Contaminants such as Lux residues have been removed. Repeater is 54.5 weight percent HFC-43-10mee, 25.0 weight percent trans-1,2-DCE, 14.0 weight percent -Cent cyclopentane, 6.0 weight percent methanol and 0.5 weight Washed with the volume percent of inert as follows. -1 minute in steam over boiling oil sump -3 minutes immersion in a rinsing oil reservoir with ultrasound -Spray for 1 minute on boiling oil sump -2 minutes drying over steam space for boiling oil -2 more outside the vapor space (near the condensing coil) Minute drying   Repeaters are tested for electrical continuity by a continuity tester and To 100% tolerance level.                                  Example 10   Ball bearings were coated with Houghton Rust Veto 76-MB, a rust preventive oil. Bearings , 46.0 weight percent HFC-43-10mee, 40.0 weight percent trans- Corpane vapor oil containing 1,2-DCE and 14.0 weight percent cyclopentane Washed in the bird. The following cycle was used: -2 minutes immersion in boiling oil sump -2 minute immersion in rinse oil sump -1 minute immersion in steam space   The ball bearings are inspected under a microscope for waxy residue at 50x magnification, And it turned out that it was not contaminated.                                  Example 11     Ball bearings coated with Winso Rust Preventative 1161-X HFC-43-10mee, 40.0 weight percent trans-1,2-DCE and 1% Washing in Corpane vapor oil desiccant containing 4.0 weight percent cyclopentane Was done. The following cycle was used: -2 minutes immersion in boiling oil sump -2 minute immersion in rinse oil sump -1 minute immersion in steam space   Approximately 100 ball bearings are cleaned and parts are heated from room temperature to 450 ° C. RGA (gravimetric analysis), which is followed by GC-MS for analysis of the remaining residue Was evaluated. Parts look clean and pass acceptance tests did.                                  Example 12   Lard Kut 206, formed metal lead frame contaminated with stamping oil, 46.0 weight percent HFC-43-10mee, 40.0 weight percent trans-1,2 -Branson steam oil decant containing DCE and 14.0 weight percent cyclopentane Was washed. The following cycle was used: -2 minutes immersion in boiling oil sump -2 minute immersion in rinse oil sump -2 minutes in the steam space over the rinsing oil sump   The lead frame was analyzed by IR and found to be free of contamination. 10 magnification Microscopic inspection of the sample showed no residue or spots.                                  Additional compounds   Aliphatic hydrocarbons having a boiling point of 35-85 ° C; Hydrofluorocarbon alkanes, hydrofluorides having a boiling point between 35-85 ° C Luoropropane, a hydrocarbon ester having a boiling point between 30-80 ° C, 25-8 Hydrochlorofluorocarbons with boiling points between 5 ° C, boiling points between 25-85 ° C A hydrofluorocarbon having a boiling point between 35-85 ° C. Other components such as chlorocarbons, chlorocarbons and perfluorinated compounds The above-described method can be used without substantially changing its properties, including the constant boiling behavior of the product. It can be added to an azeotropic or azeotropic composition. Specific examples of such components are given below. Including, typically not more than about 10 weight percent of the total composition:Compound formula Boiling point ℃     HCFC-123 CHCl_TwoCF_Three                      27     HCFC-141b CFCl_TwoCH_Three                      32     HCFC-225aa CHF_TwoCCl_TwoCF_Three                   53     HCFC-225ca CHCl_TwoCF_TwoCF_Three                   52     HCFC-225cb CHClFCF_TwoCF_TwoCl 56     HCFC-225da CClF_TwoCHClCF_Three                  50     HFC-HFC43-10mf CF_ThreeCH_TwoCF_TwoCF_TwoCF_Three               52     HFC-HFC-43-10mcf CF_ThreeCF_TwoCH_TwoCF_TwoCF_Three               52     FC-C-51-12 Cyclo-C_FourF₆(CF_Three)_Two            45                       CH_ThreeOCF_TwoCHFCF_Three                 52     HFC-C-456myc cyclo-CH_TwoCH_TwoCF_TwoCF (CF_Three)     HFC-C-354 Cyclo-CF_TwoCF_TwoCH_TwoCH_Two           50                       C_FourF₉CH = CH_Two                    58     MEK CH_ThreeC (O) C_TwoH_Five                   80     THF cyclo-OC_FourH₈                66     Methyl formate HC (O) OCH_Three                     32     Ethyl formate HC (O) OC_TwoH_Five                    54     Methyl acetate CH_ThreeC (O) OCH_Three                   56     Ethyl acetate CH_ThreeC (O) OC_TwoH_Five                  77     Acetone 56     1,2-dichloroethane 84     Acetonitrile 82     Methylene chloride 40   Such as lubricants, corrosion inhibitors, stabilizers, surfactants, dyes and other suitable materials Additives can adversely affect the composition for its intended use for a variety of purposes. As long as it does not affect, it may be added to the novel composition of the present invention. Stabilizer ingredients Examples include nitromethane and nitroethane.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) C09K 3/30 C09K 3/30 SF 5/04 5/04 (72) Inventor Minor, Barbara, Havilland. United States 21921 Elkton Green Haven Drive, Maryland 233 (72) Inventor Moyadi, Shoeb, Akverari. United States 19707 Hockesin Kings Grant Road, Delaware 47

Claims (1)

[Claims] 1. 1,1,1,2,3,4,4,5,5,5-decafluoropentane, trans-1,2-dichloroethyl     Effective amount of Tylene, cyclopentane and methanol, or substantially atmospheric pressure     1,1,1,2,3,4,4,5,5,5-decaform to form an azeotropic or azeotropic composition at     Fluoropentane, trans-1,2-dichloroethylene and cyclopentane     A composition characterized by containing. 2. 40 to 70 weight percent of 1,1,1,2,3,4,4,5,5,5-decafluoropen     Tan, 15 to 50 weight percent of trans-1,2-dichloroethylene,     From 25 weight percent cyclopentane and from 1 to 10 weight percent     Methanol; 35 to 75 weight percent 1,1,1,2,3,4,4,5,5,5-decafu     Fluoropentane, 10 to 50 weight percent of trans-1,2-dichloroethyl     Consisting essentially of ethylene and 5 to 25 weight percent cyclopentane.     The composition according to claim 1, characterized in that: 3. 45 to 65 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropen     Tan, 20 to 30 weight percent of trans-1,2-dichloroethylene,     From 20 to 20 weight percent cyclopentane and from 2 to 8 weight percent     Methanol; 40 to 70 weight percent of 1,1,1,2,3,4,4,5,5,5-decafu     Luoropentane, 15 to 45% by weight of trans-1,2-dichloroethyl     Consists essentially of ren and 10 to 20 weight percent cyclopentane     A composition according to claim 1, characterized in that: 4. 57.7 weight percent of 1,1,1,2,3,4,4,5,5,5-decafluoropentane     22.1 weight percent trans-1,2-dichloroethylene, 16.0 weight     Percent cyclopentane and 4.2 weight percent methanol; 6     2.9 weight percent of 1,1,1,2,3,4,4,5,5,5-decafluoropentane, 1     9.9 weight percent of trans-1,2-dichloroethylene and 1     Characterized by consisting essentially of 7.2 weight percent cyclopentane     The composition of claim 1. 5. A step of treating a surface with the composition according to claim 1.     How to clean body surface. 6. A step of treating a surface with the composition according to claim 2.     How to clean body surface. 7. 4. A solid comprising a step of treating a surface with the composition according to claim 3.     How to clean body surface. 8. A solid treatment comprising a step of treating a surface with the composition according to claim 4.     How to clean body surface. 9. An aerosol comprising the step of using the composition according to claim 1.     A method for producing a spray. 10. An eazo comprising the step of using the composition according to claim 2.     Manufacturing method of the spray. 11. An eazo comprising the step of using the composition according to claim 3.     Manufacturing method of the spray. 12. An eazo comprising the step of using the composition according to claim 4.     Manufacturing method of the spray. 13. A step of using the composition according to claim 1 as a foaming agent.     A method for producing a thermosetting or thermoplastic foam. 14． A step of using the composition according to claim 2 as a foaming agent.     A method for producing a thermosetting or thermoplastic foam. 15. A step of using the composition according to claim 3 as a foaming agent.     A method for producing a thermosetting or thermoplastic foam. 16. A step of using the composition according to claim 4 as a foaming agent.     A method for producing a thermosetting or thermoplastic foam.