WO2007100886A2 - Azeotropic compositions comprising fluorinated compounds for cleaning applications - Google Patents

Azeotropic compositions comprising fluorinated compounds for cleaning applications Download PDF

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Publication number
WO2007100886A2
WO2007100886A2 PCT/US2007/005243 US2007005243W WO2007100886A2 WO 2007100886 A2 WO2007100886 A2 WO 2007100886A2 US 2007005243 W US2007005243 W US 2007005243W WO 2007100886 A2 WO2007100886 A2 WO 2007100886A2
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WO
WIPO (PCT)
Prior art keywords
weight percent
composition
iso
perfluoroethyl
propyl ketone
Prior art date
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Ceased
Application number
PCT/US2007/005243
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English (en)
French (fr)
Other versions
WO2007100886A3 (en
Inventor
Melodie A. Schweitzer
Allen Capron Sievert
Joan Ellen Bartelt
Barbara Haviland Minor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of WO2007100886A2 publication Critical patent/WO2007100886A2/en
Publication of WO2007100886A3 publication Critical patent/WO2007100886A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/30—Materials not provided for elsewhere for aerosols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0043—For use with aerosol devices
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5036—Azeotropic mixtures containing halogenated solvents
    • C11D7/504—Azeotropic mixtures containing halogenated solvents all solvents being halogenated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5036—Azeotropic mixtures containing halogenated solvents
    • C11D7/504—Azeotropic mixtures containing halogenated solvents all solvents being halogenated hydrocarbons
    • C11D7/5063—Halogenated hydrocarbons containing heteroatoms, e.g. fluoro alcohols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5036—Azeotropic mixtures containing halogenated solvents
    • C11D7/5068—Mixtures of halogenated and non-halogenated solvents
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
    • C23G5/02803—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons containing fluorine
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
    • C23G5/02806—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons containing only chlorine as halogen atom
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/12—Hydrocarbons
    • C09K2205/126—Unsaturated fluorinated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/22—Electronic devices, e.g. PCBs or semiconductors
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/261—Alcohols; Phenols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/28—Organic compounds containing halogen

Definitions

  • the present invention relates to compositions comprising fluorinated olefins, or fluorinated ketones, and at least one alcohol, halocarbon, fluoroalkyl ether, or hydrofluorocarbon and combinations thereof. These compositions are azeotropic or azeotrope-like and are useful in cleaning applications as a defluxing agent and for removing oils or residues from a surface.
  • Azeotropic solvent mixtures may possess the properties needed for these de-fluxing, de-greasing applications and other cleaning agent needs.
  • Azeotropic mixtures exhibit either a maximum or a minimum boiling point and do not fractionate on boiling. The inherent invariance of composition under boiling conditions insures that the ratios of the individual components of the mixture will not change during use and that solvency properties will remain constant as well.
  • Temperatures for contacting of said perfluoroalkyl iodide with said perfluoroalkyltrihydroolefin are preferably within the range of about 150 0 C to 300 0 C, more preferably from about 170 0 C to about 250 0 C, and most preferably from about 180 0 C to about 23O 0 C.
  • Pressures for contacting of said perfluoroalkyl iodide with said perfluoroalkyltrihydroolefin are preferably the autogenous pressure of the reactants at the reaction temperature.
  • the Group VIII transition metal complex is bis(triphenyl phospine)nickel(O) dicarbonyl.
  • the ratio of perfluoroalkyl iodide to perfluoroalkyltrihydroolefin is between about 3:1 to about 8:1.
  • the temperature for contacting of said perfluoroalkyl iodide with said perfluoroalkyltrihydroolefin in the presence of a catalyst is within the range of about 80 0 C to about 130 0 C. In another embodiment, the temperature is from about 90 0 C to about 120 0 C.
  • Solvents suitable for the dehydroiodination step include one or more polar organic solvents such as alcohols (e.g., methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, and tertiary butanol), nitriles (e.g., acetonitrile, propionitrile, butyronitrile, benzonitrile, or adiponitrile), dimethyl sulfoxide, N,N-dimethylformamide, N,N-dimethylacetamide, or sulfolane.
  • alcohols e.g., methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, and tertiary butanol
  • nitriles e.g., acetonitrile, propionitrile, butyronitrile, benzonitrile
  • the dehydroiodination reaction may be conducted by contacting an aqueous solution of said basic substance with a solution of the trihydroiodoperfluoroalkane in one or more organic solvents of lower polarity such as an alkane (e.g., hexane, heptane, or octane), aromatic hydrocarbon (e.g., toluene), halogenated hydrocarbon (e.g., methylene chloride, ethylene dichloride, chloroform, carbon tetrachloride, or perchloroethylene), or ether (e.g., diethyl ether, methyl tert-butyl ether, tetrahydrofuran, 2-methyl tetrahydrofuran, dioxane, dimethoxyethane, diglyme, or tetraglyme) in the presence of a phase transfer catalyst.
  • an alkane e.g., hexane, heptan
  • the dehydroiodination reaction may be conducted in the absence of solvent by adding the trihydroiodoperfluoroalkane to one or more solid or liquid basic substance(s).
  • Suitable reaction times for the dehydroiodination reactions are from about 15 minutes to about six hours or more depending on the solubility of the reactants. Typically the dehydroiodination reaction is rapid and requires about 30 minutes to about three hours for completion.
  • the compound of formula I may be recovered from the dehydroiodination reaction mixture by phase separation, optionally after . addition of water, by distillation, or by a combination thereof.
  • the invention relates to compositions comprising perfluoroethyl isopropyl ketone (I.I.I ⁇ .Z ⁇ . ⁇ . ⁇ . ⁇ -nonafluoro ⁇ - (trifluoromethyl)-3-pentanone, (PEIK) and at least two compounds selected from the group consisting of alcohols, halocarbons, fluoralkyl ethers, and hydrofluorocarbons.
  • PEIK has CAS Reg. No. 756-13-8) and is available from 3MTM (St. Paul, MN).
  • the invention relates to a process for cleaning surfaces using azeotropic or azeotrope-like compositions comprising a fluorinated olefin, or a fluorinated ketone and at least least one compound selected from the group consisting of alcohols, halocarbons, fluoroalkyl ethers, and hydrofluorocarbons.
  • compositions of the present invention may be prepared by any convenient method by combining the desired amounts of the individual components. A preferred method is to weigh the desired component amounts and thereafter combining the components in an appropriate vessel. Agitation may be used, if desired.
  • an azeotropic composition is a constant boiling liquid admixture of two or more substances wherein the admixture distills without substantial composition change and behaves as a constant boiling composition.
  • Constant boiling compositions which are characterized as azeotropic, exhibit either a maximum or a minimum boiling point, as compared with that of the non-azeotropic mixtures of the same substances.
  • Azeotropic compositions as used herein include homogeneous azeotropes which are liquid admixtures of two or more substances that behave as a single substance, in that the vapor, produced by partial evaporation or distillation of the liquid, has the same composition as the liquid.
  • Azeotropic compositions as used herein also include heterogeneous azeotropes where the liquid phase splits into two or more liquid phases. In these embodiments, at the azeotropic point, the vapor phase is in equilibrium with two liquid phases and all three phases have different compositions.
  • cleaning apparati such as vapor degreasers or defluxers
  • some loss of the cleaning compositions may occur during operation through leaks in shaft seals, hose connections, soldered joints and broken lines.
  • the working composition may be released to the atmosphere during maintenance procedures on equipment. If the composition is not a pure compound or azeotropic or azeotrope-like composition, the composition may change when leaked or discharged to the atmosphere from the equipment, which may cause the composition remaining in the equipment to become flammable or to exhibit unacceptable performance. Accordingly, it is desirable to use as a cleaning composition a single fluorinated hydrocarbon or an azeotropic or azeotrope-like composition that fractionates to a negligible degree upon leak or boil-off.
  • ComD A ComD B wt% A wt% B TfO
  • the azeotropic compositions of the present invention may include ternary and quarternary azeotropic compositions comprising compounds from Table 2. Examples without limitation of these higher order azeotropic compositions are exemplified in Table 4 along with the atmospheric pressure boiling points for the compositions.
  • compositions of the present invention may further comprise an aerosol propellant.
  • Aerosol propellants may assist in delivering the present compositions from a storage container to a surface in the form of an aerosol. Aerosol propellant is optionally included in the present compositions in up to 25 weight percent of the total composition.
  • Representative aerosol propellants comprise air, nitrogen, carbon dioxide, difluoromethane (HFC-32, CH 2 F 2 ), trifluoromethane (HFC-23, CHF 3 ), difluoroethane (HFC-152a, CHF 2 CH 3 ), trifluoroethane (HFC- 143a, CH 3 CF 3 ; or HFC-143, CHF 2 CH 2 F), tetrafluoroethane (HFC-134a, CF 3 CH 2 F; HFC-134, CHF 2 CHF 2 ), pentafluoroethane (HFC-125, CF 3 CHF 2 ), heptafluoropropane (HFC-227ea, CF 3 CHFCF 3 ), pentafluoropropane (HFC- 245fa, CF 3 CH 2 CHF 2 ), dimethyl ether (CH 3 OCH 3 ), or mixtures thereof.
  • HFC-32, CH 2 F 2 trifluoromethane
  • An effective composition for removing residue from a surface would be one that had a Kauri-Butanol value (Kb) of at least about 10 , preferably about 40, and even more preferably about 100.
  • Kb Kauri-Butanol value
  • the Kauri-Butanol value (Kb) for a given composition reflects the ability of said composition to solubilize various organic residues (e.g., machine and conventional refrigeration lubricants).
  • the Kb value may be determined by ASTM D-1133- 94.
  • a 1L round bottom flask equipped with a mechanical stirrer, addition funnel, condenser, and thermocouple was charged with C 4 F 9 CHICH 2 C 2 F 5 (277.4 gm, 0.56 moles) and isopropanol (217.8 g).
  • the addition funnel was charged with a solution of potassium hydroxide (74.5 g, 1.13 moles) dissolved in 83.8 g of water.
  • the KOH solution was added dropwise to the flask with rapid stirring over the course of about one hour as the temperature slowly increased from 21 0 C to 42°C.
  • the reaction mass was diluted with water and the product recovered by phase separation.
  • a 500 ml round bottom flask equipped with a stirring bar and connected to a short path distillation column and dry ice trap was charged with isopropyl alcohol (50 ml), KOH (109 gm, 1.96 moles) and water (109 ml).
  • the mixture was heated to 42°C and (CF 3 ) 2 CFCH 2 CHICF 3 (109 gm, 0.28 moles) was added dropwise via an addition funnel. During the addition, the temperature increased from 42 to 55°C. After refluxing for 30 minutes, the temperature in the flask increased to 62°C and the product was collected by distillation. The product was collected, washed with water, dried with MgSd 1 and distilled.
  • compositions of the present invention are effective for cleaning ionic contamination (flux residue) from a surface.
  • the test used to determine surface cleanliness involved the following steps:
  • a rosin flux was painted liberally onto a FR-4 test board (an epoxy printed wiring board with tracing made of tinned copper).
  • the board so treated was then heated in an oven at about 175 0 C for about 1-2 minutes to activate the rosin flux.
  • solder solder
  • the board was then cleaned by immersion in the boiling cleaning composition for about 3 minutes and providing gentle movement of the board.
  • the board was then immersed in a fresh, room temperature bath of cleaning composition to rinse for about 2 minutes.
  • the board was then tested for residual ionics with an Omega Meter 600 SMD ionic analyzer.
  • Stainless steel (type 316) 2" x 3" coupons that have been grit blasted to provide an unpolished surface were pre-cleaned and oven dried to remove any residual soil. Each coupon was weighed to 4 places to obtain a tare weight. A small amount of mineral oil was applied with a swab, the coupon is then weighed to obtain the "loaded" weight. The coupon was then cleaned by immersion into a boiling cleaning composition for 1 minute, held in vapor for 30 seconds and then air dried for 1 minute. The coupon was then weighed and the percent of soil removed is calculated using the 3 recorded weights. The results are shown in Table 10.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
PCT/US2007/005243 2006-02-28 2007-02-28 Azeotropic compositions comprising fluorinated compounds for cleaning applications Ceased WO2007100886A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77735006P 2006-02-28 2006-02-28
US60/777,350 2006-02-28

Publications (2)

Publication Number Publication Date
WO2007100886A2 true WO2007100886A2 (en) 2007-09-07
WO2007100886A3 WO2007100886A3 (en) 2007-11-01

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PCT/US2007/005243 Ceased WO2007100886A2 (en) 2006-02-28 2007-02-28 Azeotropic compositions comprising fluorinated compounds for cleaning applications
PCT/US2007/005244 Ceased WO2007100887A2 (en) 2006-02-28 2007-02-28 Azeotropic compositions comprising fluorinated compounds for cleaning applications
PCT/US2007/005242 Ceased WO2007100885A2 (en) 2006-02-28 2007-02-28 Azeotropic compositions comprising fluorinated compounds for cleaning applications

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PCT/US2007/005244 Ceased WO2007100887A2 (en) 2006-02-28 2007-02-28 Azeotropic compositions comprising fluorinated compounds for cleaning applications
PCT/US2007/005242 Ceased WO2007100885A2 (en) 2006-02-28 2007-02-28 Azeotropic compositions comprising fluorinated compounds for cleaning applications

Country Status (9)

Country Link
US (9) US20070203045A1 (https=)
EP (3) EP1989285A2 (https=)
JP (3) JP2009528433A (https=)
KR (2) KR20080114758A (https=)
CN (2) CN101426894A (https=)
ES (2) ES2642570T3 (https=)
MY (5) MY160614A (https=)
TW (3) TW200740991A (https=)
WO (3) WO2007100886A2 (https=)

Cited By (1)

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KR101903306B1 (ko) * 2007-04-27 2018-10-01 이 아이 듀폰 디 네모아 앤드 캄파니 Ｚ-1,1,1,4,4,4-헥사플루오로-2-부텐의 공비 및 공비-유사 조성물
EP2152833B1 (en) * 2007-06-12 2014-07-23 E. I. Du Pont de Nemours and Company Azeotropic and azeotrope-like compositions of e-1,1,1,4,4,4-hexafluoro-2-butene
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AU2008296223B2 (en) * 2007-09-06 2013-07-04 E. I. Du Pont De Nemours And Company Azeotropic and azeotrope-like compositions of E-1,1,1,4,4,5,5,5-Octafluoro-2-pentene
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