WO2003104365A2 - Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds - Google Patents
Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds Download PDFInfo
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- WO2003104365A2 WO2003104365A2 PCT/US2003/018089 US0318089W WO03104365A2 WO 2003104365 A2 WO2003104365 A2 WO 2003104365A2 US 0318089 W US0318089 W US 0318089W WO 03104365 A2 WO03104365 A2 WO 03104365A2
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- 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
- C11D7/5004—Organic solvents
- C11D7/5018—Halogenated solvents
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- 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
- C11D7/24—Hydrocarbons
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- 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
- C11D7/263—Ethers
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- 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
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3281—Heterocyclic compounds
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- 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
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- 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
- C11D7/509—Mixtures of hydrocarbons and oxygen-containing solvents
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- 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
- C11D7/264—Aldehydes; Ketones; Acetals or ketals
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- 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
- C11D7/266—Esters or carbonates
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- 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 chemical solvating, degreasing, stripping and cleaning agents. More particularly, this invention relates to cleaning and solvating compositions containing dichloroethylene and six carbon length hydrofluoroethers and/or other agents that improve and enhance the properties of the original mixture.
- the present invention was made in response to concerns with ozone depleting materials, and toxicity concerns with non-ozone depleting chlorinated materials. In September 1987, the United States and 22 other countries signed the Montreal Protocol on Substances that Deplete the Ozone Layer (the "Protocol") .
- Drying, vapor degreasing and/or solvent cleaning consisted of exposing a room temperature workpiece to the vapors of a boiling fluid or directly immersing the workpiece in the fluid. Vapors condensing on the workpiece provided a clean distilled fluid to wash away soils and contaminants. Evaporation of the fluid from the workpiece provided a clean item similar to cleaning the same in uncontaminated fluid.
- HCFC dichloro-1-fluoro ethane
- HCFC-123 dichloro trifluoro ethane
- HCFC-225 dichloro pentafluoro propane
- HCFC-123 was immediately limited in cleaning use, and HCFC-141b was phased out in the U.S. by April 1, 1997.
- HCFC-225 is still used, however the material is scheduled for phase out by the Clean Air Act after the year 2010. Toxicity concerns with HCFC-225 exist to some users and the recommended commercial exposure level of blends of the various isomers of the material is 100 ppm.
- HFC's hydrofluorocarbons
- HFE's hydrofluoroethers
- other highly fluorinated compounds are the result of the most recent disclosures .
- HFC's and HFE's exhibit the same characteristics, with the exception they are slightly less expensive than PFC's but are still orders of magnitude more expensive than CFC's and chlorinated solvents.
- PFC's and HFE's exhibit poor solvency for the soils commonly encountered in most cleaning applications, and will require the use of solvent blends, co-solvent systems, and azeotrope like blends in order to effectively clean.
- 5,759,986 discloses the ternary azeotrope of HFC- 4310 mee with trans-1, 2-dichloroethylene (trans DCE) and cyclopentane, and the quaternary azeotrope of the three materials plus methanol . All the above listed mixtures produce non-flammable, azeotrope-like mixtures with the highest claimed level of dichloroethylene in any of the patents being 50%.
- 6,008,179 discloses binary azeotrope-like mixtures between HFE-7100 and methanol, ethanol, 1-propanol, 2-butanol, isobutanol, and tert-butanol .
- it names ternary azeotrope-like mixtures between HFE-7100, trans DCE and methanol, ethanol, 1-propanol, 2- propanol (IPA) , and tert-butanol.
- IPA 2- propanol
- the patent discloses other ternary azeotrope-like mixtures between HFE- 7100, HCFC-225 (a .hydrofluorinated-chlorinated solvent) and methanol or ethanol.
- HFE-7100 Most of the combinations with HFE-7100 described in these patents are non-flammable and show acceptable flammability character when high levels of HFE-7100 are present .
- Ternary azeotrope like combinations with halogenated solvents are not as flammable but like HFC-4310, form azeotrope-like mixtures at dichloroethylene levels of near and/or less than 50 wt% of the mixture.
- HFE-7200 perfluorobutyl ethyl ether
- HFE-7200 perfluorobutyl ethyl ether
- U.S . Patents Nos. 5,814,595, 6,235,700 and in 6,288,018 These patents describe a number of binary azeotrope-like mixtures with two isomers of the perfluorobutyl ethyl ether. All binary combinations are shown to be flammable with the exception of azeotropes with the following halogenated solvents: hexafluoro-2-propanol , 1,2- dichloropropane and trans DCE.
- the combination with trans DCE is the most interesting aspect of this patent because the material forms an azeotrope-like product at 62.7 to 68.8 wt% trans DCE depending on the HFE-7200 isomer mixture.
- azeotrope or azeotrope like compositions that are able to clean difficult soils and fluxes that are not effectively cleaned today by current art.
- these compositions would be non-flammable, effective cleaning, have little or no ozone depletion potential and have relatively short atmospheric lifetime so that they do not contribute to global warming.
- the present invention provides a solvent mixture which can be used in solvating, vapor degreasing, photoresist stripping, adhesive removal, aerosol, cold cleaning, and solvent cleaning applications including defluxing, dry- cleaning, degreasing, particle removal, metal and textile cleaning.
- Non-limiting examples of the soils and contaminants that are removed by the composition of the present invention are oil, grease, coatings, flux, resins, waxes, rosin, adhesives, dirt, fingerprints, epoxies, polymers, and other common contaminants found in the art.
- the present cleaning and solvating compositions comprise dichloroethylene compounds and alkoxy-substituted perfluoro compounds that contain six carbon atoms (HFE6C) .
- the compositions also include highly fluorinated materials to retard flammability and/or other enhancement agents that improve and enhance the properties of the original mixture. The addition of these agents to the composition will modify the physical and/or cleaning characteristics of the dichloroethylene / HFE6C mixture to accomplish its desired cleaning or solvating task.
- the highly fluorinated material is any fluorinated hydrocarbon material in which the number of fluorine atoms exceeds the number of hydrogen atoms on the molecule.
- the enhancement agents are one or more of the following materials: alcohols, esters, ethers, cyclic ethers, ketones, alkanes (including cyclic alkanes) , aromatics, amines, siloxanes, terpenes, dibasic esters, glycol ethers, pyrollidones, or low or non ozone depleting halogenated hydrocarbons .
- These mixtures are useful in a variety of solvating, vapor degreasing, photoresist stripping, adhesive removal, aerosol, cold cleaning, and solvent cleaning applications including defluxing, dry cleaning, degreas
- the composition comprising the dichloroethylene compounds and alkoxy-substituted perfluoro compounds that contain six carbon atoms (HFE6C) , with highly fluorinated materials to retard flammability and/or other enhancement agents that improve and enhance the properties of the mixture can be used to replace highly ozone depleting materials such as chlorofluorocarbons, methyl chloroform, hydrochlorofluorocarbons or chlorinated solvents.
- highly ozone depleting materials such as chlorofluorocarbons, methyl chloroform, hydrochlorofluorocarbons or chlorinated solvents.
- these mixtures will be more robust cleaning agents versus present art that uses HFC s and HFE's.
- dichloroethylene materials include 1,1- dichloroethylene, 1, 2-cis-dichloroethylene and 1, 2-trans- dichloroethylene .
- HFE6C Alkoxy-substituted perfluoro compounds that contain six carbons
- HFE6C Alkoxy-substituted perfluoro compounds that contain six carbons
- Highly fluorinated materials used in this invention are compounds of the formula C a F b H c Xd where a is an integer from 2 to 8, b is an integer greater than a but less than 2a+2, d is 0,1, or 2, and c is less than or equal to 2a+2-b-d.
- X can be O, N, halogen, or Si, in any possible combination as long as the number of F atoms exceeds the number of H atoms in the molecule.
- halogen is meant Cl , Br, and I.
- Suitable enhancement agents are one or more of the following materials: alcohols, esters, ethers, cyclic ethers, ketones, alkanes, aromatics, amines, siloxanes, terpenes, dibasic esters, glycol ethers, pyrollidones, or low-or non ozone depleting-halogenated hydrocarbons.
- the addition of the fluorinated compounds to the mixture will reduce and/or eliminate the flammability measured as the closed and/or open cup flash-points of the mixture.
- the proper selection of the materials in the mixture may create an azeotrope or azeotrope-like blend which is desirable.
- other additives such as surfactants, colorants, dyes, fragrances, indicators, inhibitors, and buffers as well as other ingredients which modify the properties of the mixture.
- the dichloroethylene component of the mixture contains effective amounts of 1, 1-dichloroethylene, 1,2-cis- dichloroethylene and 1, 2-trans-dichloroethylene . They are usable either singly or as a mixture of two or more. Among the most preferred are 1,2-trans- and 1,2-cis- dichloroethylene .
- HFE6C alkoxy-substituted perfluoro compounds that contain six carbon atoms
- n- perfluorobutane ethyl ether examples include iso-perfluorobutane ethyl ether, tert-perfluorobutane ethyl ether, n-perfluoropentane methyl ether, 2-trifluoromethyl perfluorobutyl 1-methyl ether, 2- trifluoromethyl perfluorobutyl 2-methyl ether, 2- trifluoromethyl perfluorobutyl 3-methyl ether, 2- trifluoromethyl perfluorobutyl 4-methyl ether, 2,2- trifluoromethyl perfluoropropyl 1-methyl ether.
- the highly fluorinated materials of this invention are compounds of the formula C x F y H 2 X a where x is 2-8, y>x and z ⁇ y,- and a can be 0 or greater.
- X can be O, N, halogen, or Si, in any possible combination as long as the number of F atoms exceeds the number of H atoms in the molecule .
- fluorinated materials are tetrafluoroethane, pentafluoroethane, perfluoroethane, pentafluoropropane, hexafluoropropane, heptafluoropropane, perfluoropropane, hexafluorobutane, heptafluorobutane, octafluorobutane, nonafluorobutane, perfluorobutane, heptafluoropentane, octafluoropentane, nonafluoropentane, decafluoropentane, undecafluoropentane, perfluoropentane, octafluorohexane, nonafluorohexane, decafluorohexane, undecafluorohexane, dodecafluorohexane, tridecafluorohexane, and perflu
- fluorinated compounds are: 3- chloro-l,l,l-trifluoropropane (HCFC-253fb) ; 1,1,1,3,3,5,5,5- octafluoropentane (HFC-458mfcf) ; 4-trifluoromethyl- 1, 1,1, 2, 2, 3, 3, 5, 5, 5-decafluoropentane (HFC-52-13 ) ; 4- trifluoromethyl-1, 1,1,2,2,5,5, 5-octafluoropentane (HFC-54-11) ; 4-trifluoromethyl-1, 1, 1, 2, 2,3, 5, 5, 5- nonafluoropentane (HFC- 53-12); 1,1,1,2,3,4,4,5,5,5- decafluoropentane (HFC-43-10mee) ; 1,1,1,2,2,3,3,4,4,5,6- undecafluorohexane (HFC-54-llqe) ; 1,1,2,2,3,3,4,4- octafluorobutane (H
- HFE-7200 1,1,2,2,3,3,4,5- octafluorocyclopentane ; pentafluoroethane (HFC-134) ; dichloro-trifluoroethane (HCFC- 123) ; trichloro-tetrafluoropropane (HCFC-224) ; dichloro- pentafluoropropane (HCFC-225) ; dichloro-tetrafluoropropane
- HCFC-234 chloro-pentafluoropropane (HCFC-235) ; chloro- tetrafluoropropane (HCFC-244) ; chloro-hexafluoropropane (HCFC- 226) ; pentachloro-difluoropropane (HCFC-222) ; tetrachloro- trifluoropropane (HCFC-223) ; trichloro-trifluoropropane (HCFC- 233) pentafluoropropane (HFC-245) nonafluorobutylethylene
- Fluoroalcholos such as trifluoroethanol can also be used. They can be used either singly or as a mixture of two or more. Among the most preferred are HFE-7100, HFC 43-10, HCFC-225, PFBET, 1- bromopropane and octafluorocyclopentane .
- Other compounds may be added to the mixture to vary the properties of the cleaner or solvent to fit various applications . The addition of these other compounds may also assist in the formation of useful azeotropic compositions.
- An azeotropic composition is defined as a constant boiling mixture of two or more substances that behaves like a single substance. Azeotropic compositions are desirable because they do not fractionate upon boiling. This behavior is desirable because mixtures may be used in vapor degreasing equipment and or the material may be redistilled.
- azeotrope-like composition means a constant boiling or substantially constant boiling mixture of two or more substances that behave as a single substance, which therefore can distill without substantial compositional change. Constant boiling compositions, which are characterized as “azeotrope-like” will exhibit either a maximum, or minimum boiling point compared to non azeotropic mixtures of two substances at a given pressure.
- azeotrope As used herein, the terms azeotrope, azeotrope-like and constant boiling are intended to mean also essentially azeotropic or essentially constant boiling. In other words, included within the meaning of these terms are not only the true azeotropes, but also other compositions containing the same components in different proportions, which are true azeotropes or are constant boiling at other temperature and pressure. As is well recognized in this art, there is a range of compositions which contain the same components as the azeotrope, which will not exhibit essentially equivalent properties for cleaning, solvating and other applications, but will exhibit essentially equivalent properties as the true azeotropic composition in terms of constant boiling characteristics or tendency not to separate or fractionate on boiling.
- the alcohol useful as an enhancement agent is of the formula C x H y O z where x is 1 to 12, preferably 1 to 8, more preferably 1 to 6, y is greater than x but less than 2x+2 , and z is 1 to 3 provided that at least one O is a hydroxyl oxygen.
- Examples of these alcohols are methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, n-butyl alcohol, 2 -butyl alcohol, t-butyl alcohol, 1-pentanol, 2-pentanol, 3-pentanol, allyl alcohol, 1-hexanol, 2-hexanol, 3-hexanol, 2-ethyl hexanol, 1-octanol, 1-decanol, 1-dodecanol, cyclohexanol , cyclopentanol , benzyl alcohol, furfuryl alcohol, tetrahydrofurfuryl alcohol, bis-hydroxymethyl tetrahydrofuran, ethylene glycol, propylene glycol, and butylene glycol.
- the ester useful as an enhancement agent is of the formula R ⁇ -COO-R 2 where R x and R 2 could be the same or different, R x is hydrogen, C x -C 2 o alkyl, C 5 -C 3 cycloalkyl, benzyl, furanyl or tetrahydrofuranyl , preferably C x to C 8 alkyl, more preferably Ci to C 4 alkyl; R 2 is C ⁇ -C 8 alkyl, preferably Ci to C 4 alkyl, C 5 -C 3 cycloalkyl, benzyl, phenyl, furanyl or tetrahydrofuranyl .
- esters examples include methyl formate, methyl acetate, methyl propionate, methyl butyrate, ethyl formate, ethyl acetate, ethyl propionate, ethyl butyrate, propyl formate, propyl acetate, propyl propionate, propyl butyrate, butyl formate, butyl acetate, butyl propionate, butyl butyrate, methyl soyate, isopropyl myristate, propyl myristate, and butyl myristate.
- methyl formate methyl acetate, ethyl acetate and ethyl formate .
- the ether useful as an enhancement agent is of the formula R 3 -0-R 4 where R 3 is C ⁇ -C 10 alkyl or alkynl, C 3 -C 6 cycloalkyl, benzyl, phenyl, furanyl or tetrahydrofuranyl, R 4 is Ci-Cio alkyl or alkynyl, C 5 -C 6 cycloalkyl, C 1 -C4 ether, benzyl, phenyl , furanyl or tetrahydrofuranyl .
- ethers examples include ethyl ether, methyl ether, propyl ether, isopropyl ether, butyl ether, methyl tert butyl ether, ethyl tert butyl ether, vinyl ether, allyl ether, methylal, ethylal and anisole.
- R 3 and R 4 which can be the same or different, can be C x to C 10 alkyl or alkynyl, preferably C x to C s alkyl or alkynyl , more preferably C x to C 4 alkyl.
- isopropyl ether, methylal and propyl ether are examples of the ethers.
- the preferred cyclic ethers are: 1,4-dioxane, 1,3- dioxolane, tetrahydrofuran (THF) , rc.ethyl THF, dimethyl THF and tetrahydrop ran (THP) , methyl THP, dimethyl THP, ethylene oxide, propylene oxide, butylene oxide, amyl oxide, and isoamyl oxide. Most preferred is THF.
- these ketones are acetone, methyl ethyl ketone, 2-pentanone, 3-pentanone, 2-hexanone, 3- hexanone, and methyl isobutyl ketone.
- R 5 and R 6 which can be the same or different, can be are, preferably C x to C 6 alkyl, more ' preferably C x to C 4 alkyl.
- acetone methyl ethyl ketone, 3-pentanone and methyl isobutyl ketone .
- the alkane useful as an enhancement agent is of the formula: C n H n+2 where n is 1-20, or C 4 -C 20 cycloalkanes .
- alkanes are butane, methyl propane, pentane, isopentane, methyl butane, cyclopentane, hexane, cyclohexane, isohexane, heptane, methyl pentane, dimethyl butane, octane, nonane and decane.
- n is preferably 4 to 9, more preferably 5 to 7.
- cyclopentane cyclohexane, hexane, methyl pentane, and dimethyl butane.
- the aromatic compound useful as an enhancement agent is of the formula: C 6 H n -X6-_ ⁇ where n is 0 to 6.
- X can be hydroxyl, halogen or any of the alkane, alcohol, ether groups listed above.
- aromatics are benzene, toluene, xylene, ethylbenzene , cumene, mesitylene, hemimellitine, pseudocumene , butylbenzene , phenol and benzotrifluoride.
- toluene, xylene and mesitylene are most preferred.
- the a ine useful as an enhancement agent is of the formula: NR 7 R 8 R 9 where R 7 , R 8 and R 9 can be hydrogen, hydroxyl, C x -C xo alkyl, C x -C xo alcohol. R 7 , R 8 and R 9 can all be the same or independently different.
- amines examples include methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, n-propylamine, di-n-propylamine, tri-n-propylamine, iso ropylamine, di-isopropylamine, tri- isopropylamine, n-butylamine, isobutylamine, sec-butylamine, tert-butyla ine, ethanolamine, diethanolamine, triethanolamine, amino methyl propanol and hydroxylamine . Most preferred are butylamines and triethylamine .
- the siloxane useful as an enhancement agent is a volatile methyl siloxane.
- a volatile methyl siloxane Three examples of these are hexamethyl disiloxane, octamethyl trisiloxane and decamethyl tetrasiloxane . Most preferred is hexamethyl disiloxane.
- the terpene useful as an enhancement agent contains at least one isoprene group of the general formula:
- the molecule may be cyclic or multicyclic. Preferred examples are d-limonene, pinene, terpinol, turpentine and dipentene .
- the dibasic ester which can be used as an enhancement agent is of the formula: R 0 -COO-R xx -COO-R X2 where R 10 is C ⁇ -C 2 o alkyl, C 5 -C 6 cycloalkyl, benzyl, furanyl or tetrahydrofuranyl, R xx is C x -C 2 o alkyl, C 5 -C 6 cycloalkyl, benzyl, phenyl, furanyl or tetrahydrofuranyl, R X2 is C ⁇ -C 20 alkyl, C 5 -C 6 cycloalkyl, benzyl, furanyl or tetrahydrofuranyl.
- dibasic esters examples include dimethyl oxalate, dimethyl malonate, dimethyl succinate, dimethyl glutarate, dimethyl adipate, methyl ethyl succinate, methyl ethyl adipate, diethyl succinate, diethyl adipate.
- R xo , R , and R 12 which can be the same or different, are preferably C x to C e alkyl or alkynyl , more preferably C x to C 4 alkyl .
- dimethyl succinate, and dimethyl adipate are examples of these dibasic esters.
- the glycol ether component which can be used as an enhancement is of the formula: R X3 -0-R 14 -0-R X 5 where R X3 is C 2 -C 20 alkyl, C 5 -C 6 cycloalkyl, benzyl, furanyl or tetrahydrofuranyl, R X4 is C x -C 20 alkyl, C 5 -C 6 cycloalkyl, benzyl, phenyl, furanyl or tetrahydrofuranyl, R X5 is hydrogen or an alcohol as defined above.
- glycol ethers examples include ethylene glycol methyl ether, diethylene glycol methyl ether, ethylene glycol ethyl ether, diethylene glycol ethyl ether, ethylene glycol propyl ether, diethylene glycol propyl ether, ethylene glycol butyl ether, diethylene glycol butyl ether, propylene glycol methyl ether, dipropylene glycol, dipropylene glycol methyl ether, propylene glycol propyl ether, dipropylene glycol propyl ether, methyl methoxybutanol, propylene glycol butyl ether, and dipropylene glycol butyl ether.
- propylene glycol butyl ether dipropylene glycol methyl ether, dipropylene glycol, methyl methoxybutanol, dipropylene glycol butyl ether and diethylene glycol butyl ether .
- the pyrrolidone enhancement agent is substituted in the N position of the pyrrolidone ring by hydrogen, C x to C 8 alkyl, or C x to C 8 alkanol .
- these pyrrolidones are pyrrolidone, N-methyl pyrrolidone, N-ethyl pyrrolidone, N- propyl pyrrolidone, N-hydroxymethyl pyrrolidone, N- hydroxyethyl pyrrolidone, and N-hexyl pyrrolidone.
- N-methyl pyrrolidone and N-ethyl pyrrolidone are most preferred.
- the halogenated hydrocarbon enhancement agent is of the formula: R xs -X y where R X6 is C x -C 20 alkyl, C 4 -C ⁇ 0 cycloalkyl, C 2 -C 20 alkenyl benzyl, phenyl, fluoroethyl, and X is chlorine, bromine fluorine or iodine and y is not 0, and the Ozone Depletion Potential (ODP) of the molecule ⁇ 0.15.
- ODP Ozone Depletion Potential
- chlorinated materials examples include methyl chloride, methylene chloride, ethyl chloride, dichloro ethane, propyl chloride, n- propyl bromide, isopropyl chloride, propyl dichloride, butyl chloride, isobutyl chloride, sec-butyl chloride, tert-butyl chloride, pentyl chloride, and hexyl chloride.
- methylene chloride and n-propyl bromide.
- the inventive compositions are intended to be used in a similar manner as CFC's and chlorinated solvents, which have been widely used in the past in cleaning applications.
- mixtures may be used in various techniques of cleaning which would be apparent to one skilled in the art such as spraying, spray under immersion, vapor degreasing/cleaning, immersion at either the boiling point or below the boiling point, wiping with cloths and brushes, immersion with ultrasonics, immersion with tumbling and spraying into air. These techniques were used to clean hard surfaces of items and were also used to clean textiles.
- compositions are also intended to be used in a similar manner as CFC's and chlorinated solvents, which have been widely used in past solvating applications. These mixtures may be used as a solvent in adhesives, paints, chemical processes, and other applications in which the solubility parameter of the solvent dissolved the solid or liquid, and/or exhibited appropriate volatility for the application.
- compositions comprising dichloroethylene and alkoxy- substituted perfluoro compounds that contain six carbon atoms
- HFE6C HFE6C with, if required, highly fluorinated materials to retard flammability and/or with other enhancement agents that improve and enhance the properties.
- the resultant composition can be formulated to have acceptable low ozone depletion potential, and will have some or all of the similar desirable characteristics of CFC's and chlorinated solvents of: cleaning ability, compatibility, volatility, viscosity, solvating ability, drying ability, low or no VOC, and/or surface tension character.
- desired blends will exhibit no flash points in keeping in character with the CFC and chlorinated based solvents.
- the content of the enhancement components in the mixture of the present invention is not particularly limited, but for the addition of an effective amount necessary to improve or control solubility, volatility, boiling point, flammability, surface tension, viscosity, reactivity, and material compatibility.
- the level of the dichloroethylene component will exceed 50% by weight of the mixture and the HFE6C will be less than 30% by weight of the mixture.
- the amount of dichloroethylene is 50-99.9 weight percent, preferably 50-99 weight percent, more preferably 50-90 weight percent, and still more preferably 60-80 weight percent.
- the amount of highly fluorinated ether is 0.1-30 weight percent, preferably 10-30 weight percent, and more preferably 15-25 weight percent. Addition of the highly fluorinated material is required to modify physical properties of the mixture such as flash point, and the addition of other optional materials is required to improve the efficacy of the mixture or to assist in creating an azeotrope or an azeotrope-like mixture which is preferred.
- effective amounts for azeotropes is defined as the amount of each component of the inventive compositions that, when combined, results in the formation of an azeotropic or azeotrope-like composition.
- This definition includes the amounts of each, component, which amounts vary depending on the pressure applied to the composition, so long as the azeotropic or azeotrope-like, or constant boiling or substantially constant boiling compositions continue to exist at different pressures, but with possible different boiling points. Therefore, effective amount includes the weight percentage of each component of the composition of the instant invention, which forms azeotropic or azeotrope-like, or constant boiling or substantially constant boiling, compositions at pressures other than atmospheric pressure.
- a composition can be defined as an azeotrope of A, B, and C, since the term "azeotrope" is at once both definitive and limitative, and requires that effective amounts of A, B, and C form this unique composition of matter, which is a constant boiling mixture .
- azeotrope It is well known by those skilled in the art that at different pressures, the composition of a given azeotrope will vary, at least to some degree, and changes in pressure will also change, at least to some degree, the boiling point.
- an azeotrope of A, B, and C represents a unique type of relationship but with a variable composition which depends on temperature and/or pressure. Therefore compositional ranges rather than fixed compositions are often used to describe azeotropes .
- the composition can be defined _ as a particular weight percent relationship or mole percent relationship of A, B, and C, while recognizing that such specific values point out only one particular such relationship and that in actuality, a series of such relationships, represented by A, B, and C actually exist for a given azeotrope, varied by the influence of pressure.
- Azeotrope A, B, and C can be characterized by defining the composition as an azeotrope characterized by a boiling point at a given pressure, thus giving identifying characteristics without unduly limiting the scope of the invention by a specific numerical composition which is limited by and is only as accurate as the analytical equipment available .
- compositions within these ranges exhibit substantially constant boiling point at constant pressure.
- These ternary azeotrope like compositions being substantially constant boiling, the compositions do not tend to 1 fractionate to any great extent upon evaporation at standard conditions. After evaporation, only a small difference exists between the composition of the vapor and the composition of the initial liquid phase. This difference is such that the composition of the vapor and liquid phases are considered substantially the same and are azeotropic or azeotrope like in their behavior.
- IPA 2-propanol
- compositions are characterized as azeotropic or azeotrope-like in that compositions within these ranges exhibit substantially constant boiling point at constant ⁇ pressure .
- These mixtures were selected as a result of adding a material from a final group of selected highly fluorinated compounds to the ternary azeotrope-like blend. In most instances the purpose of its addition was to retard the flashpoint.
- the addition of the highly fluorinated compound in many ways formed unique mixtures in creating two ternary azeotrope-like mixtures that overlapped each other and had similar boiling points and compositions. Being substantially constant boiling, the compositions do not tend to fractionate to any great extent upon evaporation up to 50% of the mass.
- the mixtures are not easily fractionated, they are useful commercially in standard cleaning apparatuses for cold cleaning and vapor degreasing. After evaporation of half the mass, small differences of less than 10% exist between the composition of the vapor and the composition of the initial liquid phase. This difference is such that the composition of the vapor and liquid phases are considered substantially the same and are either azeotropic or azeotrope like in their behavior. This is a blend that is suitable for commercial use.
- inhibitors be added to the compositions to inhibit decomposition, react with undesirable decomposition products of the compositions, and/or prevent corrosion of metal surfaces. Any and all of the following classes of inhibitors may be employed in the invention, some of which may serve a dual purpose as suitable components for cleaning and solvating.
- alkanols having 4 to 7 carbon atoms nitroalkanes having 1 to 3 carbon atoms, 1,2 epoxyalkanes having 2 to 7 carbon atoms, acetylene alcohols having 3 to 9 carbon atoms, phosphite esters having 12 to 30 carbon atoms, ethers having 3 to 6 carbon atoms, unsaturated hydrocarbon compounds having 4 to 7 carbon atoms, triazoles, acetals having 4 to 7 carbon atoms, ketones having 3 to 5 carbon atoms , and amines having 6 to 8 carbon atoms .
- Inhibitors may be used alone or in mixtures in any proportions. Typically less than 5 weight percent and, preferably, less than 2 weight percent of inhibitor based on the total weight of the mixture may be used.
- composition of the present invention may further contain surfactants, emulsifying agents, wetting agents, water, perfumes, indicators, or colorants.
- compositions of the invention are useful for solvating, vapor degreasing, photoresist stripping, adhesive removal, aerosol, cold cleaning, and solvent cleaning applications including defluxing, dry cleaning, degreasing, particle removal, metal and textile cleaning.
- the azeotropic mixtures of this invention were initially identified by screening mixtures of dichloroethylene / HFE6C and various organic solvents. The selected mixtures were distilled in a Kontes multistage distillation apparatus using a Snyder distillation column. The distilled overhead composition was analyzed using a Hewlett-Packard Gas Chromatograph using a FID detector and a HP-4 column. The overhead composition was compared to the feed composition to identify the azeotropic composition. If the feed and overhead compositions differed then the overhead material was collected and re-distilled until successive distillation compositions were within 2% of the feed composition, indicating an azeotrope. The method was also supplemented by recording temperatures of the feed at boiling at approximately 1 atmosphere (room pressure) . The presence of an azeotrope was also indicated when the test mixture exhibited a lower boiling point than the boiling point of the subsequent feed mixture. Results obtained are summarized in Table 1.
- Cleaning/solvating compositions were made using dichloroethylene compounds (I) with alkoxy-substituted perfluoro compounds that contain six carbons (HFE6C) (II) , with highly fluorinated materials (A) to retard flammability and with other enhancement agents that improve and enhance the properties of the original mixture were tested (B) . Tests were conducted to determine the cleaning and solvating of the solvent mixtures using the same method as previously discussed. Flash points were also observed in checking the ability to light the mixture in a beaker at room temperature and pressure in a modified open cup flash point test .
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- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
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- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60311093T DE60311093T2 (en) | 2002-06-07 | 2003-06-09 | CLEANING AGENT WITH DICHLORETHYLENE AND BY ALKOXY SUBSTITUTED PERFLUOR COMPOUNDS WITH A TOTAL OF SIX CARBON ATOMS |
MXPA04010039A MXPA04010039A (en) | 2002-06-07 | 2003-06-09 | Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds. |
AU2003259032A AU2003259032B2 (en) | 2002-06-07 | 2003-06-09 | Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds |
CA 2474669 CA2474669C (en) | 2002-06-07 | 2003-06-09 | Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds |
KR1020047013520A KR100689970B1 (en) | 2002-06-07 | 2003-06-09 | Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds |
BRPI0311651A BRPI0311651A2 (en) | 2002-06-07 | 2003-06-09 | cleaning compositions containing dichloroethylene and perfluoro alkoxy compounds substituted by six carbons |
JP2004511426A JP4246700B2 (en) | 2002-06-07 | 2003-06-09 | Cleaning composition containing dichloroethylene and alkoxy-substituted perfluoro compound having 6 carbon atoms |
EP03757433A EP1511833B1 (en) | 2002-06-07 | 2003-06-09 | Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds |
HK06101791.3A HK1079234A1 (en) | 2002-06-07 | 2006-02-10 | Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US10/164,308 US6699829B2 (en) | 2002-06-07 | 2002-06-07 | Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds |
US10/164,308 | 2002-06-07 | ||
BRPI0405398-2A BRPI0405398B1 (en) | 2002-06-07 | 2004-12-07 | CLEANING COMPOSITION, AZEOTROPIC OR AZEOTROPIC TYPE COMPOSITION, SOLID SURFACE CLEANING METHOD AND SOLVING METHOD OF A SOLID OR LIQUID MATERIAL |
Publications (2)
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WO2003104365A2 true WO2003104365A2 (en) | 2003-12-18 |
WO2003104365A3 WO2003104365A3 (en) | 2004-04-15 |
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PCT/US2003/018089 WO2003104365A2 (en) | 2002-06-07 | 2003-06-09 | Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds |
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Country | Link |
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US (2) | US6699829B2 (en) |
EP (1) | EP1511833B1 (en) |
JP (1) | JP4246700B2 (en) |
KR (1) | KR100689970B1 (en) |
CN (1) | CN100540645C (en) |
AU (1) | AU2003259032B2 (en) |
BR (1) | BRPI0405398B1 (en) |
CA (1) | CA2474669C (en) |
DE (1) | DE60311093T2 (en) |
ES (1) | ES2276104T3 (en) |
MX (1) | MXPA04010039A (en) |
WO (1) | WO2003104365A2 (en) |
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- 2003-06-09 DE DE60311093T patent/DE60311093T2/en not_active Expired - Lifetime
- 2003-06-09 KR KR1020047013520A patent/KR100689970B1/en not_active IP Right Cessation
- 2003-06-09 AU AU2003259032A patent/AU2003259032B2/en not_active Ceased
- 2003-06-09 JP JP2004511426A patent/JP4246700B2/en not_active Expired - Fee Related
- 2003-06-09 ES ES03757433T patent/ES2276104T3/en not_active Expired - Lifetime
- 2003-06-09 CA CA 2474669 patent/CA2474669C/en not_active Expired - Lifetime
- 2003-06-09 WO PCT/US2003/018089 patent/WO2003104365A2/en active IP Right Grant
- 2003-06-09 MX MXPA04010039A patent/MXPA04010039A/en active IP Right Grant
- 2003-06-09 CN CNB038040662A patent/CN100540645C/en not_active Expired - Fee Related
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008508386A (en) * | 2004-07-29 | 2008-03-21 | アルケマ フランス | 1,1,1,3,3-pentafluorobutane composition |
CN110079169A (en) * | 2014-09-09 | 2019-08-02 | 霍尼韦尔国际公司 | Low VOC and high solid fluoropolymer for coating application |
CN110079169B (en) * | 2014-09-09 | 2021-07-09 | 霍尼韦尔国际公司 | Low VOC and high solids fluoropolymers for coating applications |
US10669502B2 (en) | 2016-02-09 | 2020-06-02 | AGC Inc. | Solvent composition, cleaning method, coating film-forming composition, and method of forming a coating film |
US10934507B2 (en) | 2018-02-02 | 2021-03-02 | Shellef Holdings Inc. | Compositions comprising trans-1,2-dichloroethylene and an organic compound, and methods of using the same |
US11447725B2 (en) | 2018-02-02 | 2022-09-20 | Shellef Holdings Inc. | Compositions comprising trans-1,2-dichloroethylene and an organic compound, and methods of using the same |
US10934505B2 (en) | 2018-07-31 | 2021-03-02 | Sun Chemical Corporation | Printing press wash |
Also Published As
Publication number | Publication date |
---|---|
KR20050005415A (en) | 2005-01-13 |
EP1511833A2 (en) | 2005-03-09 |
US7288511B2 (en) | 2007-10-30 |
EP1511833A4 (en) | 2005-07-06 |
BRPI0405398A (en) | 2006-08-29 |
CN1656207A (en) | 2005-08-17 |
US20030228997A1 (en) | 2003-12-11 |
ES2276104T3 (en) | 2007-06-16 |
JP2005523991A (en) | 2005-08-11 |
BRPI0405398B1 (en) | 2015-02-03 |
CA2474669C (en) | 2008-08-05 |
WO2003104365A3 (en) | 2004-04-15 |
US6699829B2 (en) | 2004-03-02 |
DE60311093T2 (en) | 2007-07-12 |
DE60311093D1 (en) | 2007-02-22 |
CN100540645C (en) | 2009-09-16 |
MXPA04010039A (en) | 2005-07-01 |
JP4246700B2 (en) | 2009-04-02 |
AU2003259032B2 (en) | 2008-09-04 |
CA2474669A1 (en) | 2003-12-18 |
US20040224870A1 (en) | 2004-11-11 |
AU2003259032A1 (en) | 2003-12-22 |
KR100689970B1 (en) | 2007-03-08 |
EP1511833B1 (en) | 2007-01-10 |
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