US3554918A - Azeotropic composition - Google Patents
Azeotropic composition Download PDFInfo
- Publication number
- US3554918A US3554918A US677715A US3554918DA US3554918A US 3554918 A US3554918 A US 3554918A US 677715 A US677715 A US 677715A US 3554918D A US3554918D A US 3554918DA US 3554918 A US3554918 A US 3554918A
- Authority
- US
- United States
- Prior art keywords
- solvent
- azeotropes
- azeotropic
- tetrachlorodifluoroethane
- vapor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title description 22
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract description 13
- SLGOCMATMKJJCE-UHFFFAOYSA-N 1,1,1,2-tetrachloro-2,2-difluoroethane Chemical compound FC(F)(Cl)C(Cl)(Cl)Cl SLGOCMATMKJJCE-UHFFFAOYSA-N 0.000 abstract description 9
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 abstract description 6
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 abstract description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- 239000002904 solvent Substances 0.000 description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- 238000009835 boiling Methods 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 9
- 239000000306 component Substances 0.000 description 7
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 6
- 230000004907 flux Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 5
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005238 degreasing Methods 0.000 description 4
- 239000013527 degreasing agent Substances 0.000 description 4
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 4
- 231100000252 nontoxic Toxicity 0.000 description 4
- 230000003000 nontoxic effect Effects 0.000 description 4
- UGCSPKPEHQEOSR-UHFFFAOYSA-N 1,1,2,2-tetrachloro-1,2-difluoroethane Chemical compound FC(Cl)(Cl)C(F)(Cl)Cl UGCSPKPEHQEOSR-UHFFFAOYSA-N 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000012808 vapor phase Substances 0.000 description 3
- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical compound CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- YACLCMMBHTUQON-UHFFFAOYSA-N 1-chloro-1-fluoroethane Chemical class CC(F)Cl YACLCMMBHTUQON-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- LGPMBEHDKBYMNU-UHFFFAOYSA-N ethane;ethene Chemical compound CC.C=C LGPMBEHDKBYMNU-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- UHCBBWUQDAVSMS-UHFFFAOYSA-N fluoroethane Chemical compound CCF UHCBBWUQDAVSMS-UHFFFAOYSA-N 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 239000004434 industrial solvent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000011101 paper laminate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- UMFCIIBZHQXRCJ-NSCUHMNNSA-N trans-anol Chemical compound C\C=C\C1=CC=C(O)C=C1 UMFCIIBZHQXRCJ-NSCUHMNNSA-N 0.000 description 1
Classifications
-
- 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
- C23G5/02809—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 chlorine and fluorine
- C23G5/02812—Perhalogenated hydrocarbons
- C23G5/02816—Ethanes
- C23G5/02822—C2Cl4F2
-
- 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
- C11D7/5077—Mixtures of only oxygen-containing solvents
- C11D7/5081—Mixtures of only oxygen-containing solvents the oxygen-containing solvents being alcohols only
-
- 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
-
- 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
Definitions
- This invention relates to an azeotropic composition and particularly to the binary and ternary azeotropic mixture of tetrachlorodifiuoroethane and methanol or any one of the isomers, n-butanol or iso-butanol of sec.- butanol.
- the present invention also relates to ternary azeotropes of tetrachlorodifluoroethane and trichloroethylene with either methanol or ethanol or isopropanol.
- ternary azeotropes have been discovered comprising tetrachlorodifluoroethane, trichloroethane and either methanol or ethanol or isopropanol.
- chlorofiuoroethanes have attained widespread use as specialty solvents in recent years, particularly tetrachlorofluoroethant.
- This is a relatively high melting compound (CCl FCCl F, 24.5 C.), which is nontoxic and nonflammable, and which has satisfactory solvent power for greases, oils, waxes and the like under certain conditions. It has therefore found use in cleaning electric motors, compressors, lithographic plates, typewriters, instruments, gauges, and as non-corrosive brines.
- Printed circuits are well known in the electronics art; and consist of a circuit formed from a soft metal on a solid, non-conducting surface such as a reinforced phenolic resin. During manufacture, the solid surface is coated with the metal, the desired portion of metal is coated with an impervious coating, and the excess metal is removed by etching with a suitable acid. After the excess metal has been removed, it is necessary to remove the impervious coating because solder joints must be made to the printed circuit and these will not form if the coating is present. After the impervious coating is removed, the circuits are coated with a rosin flux to permit the joints to be soldered, after which the rosin flux must then be removed.
- the chlorofiuoroethane solvent does not have sufficient solvent power to clean printed circuits; that is, to effectively remove the rosin flux.
- mixtures of solvents may be used for this purpose they have the disadvantage that they boil over a range of temperatures and consequently undergo fractionation in vapor degreasing or ultrasonic applications which are open to the atmosphere.
- the solvent When employing either of these cleaning or degreasing methods the solvent must also be both relatively nontoxic and nonflammable for safety reasons.
- Tetrachlorodifluoroethane is a relatively high boiling fluorocarbon and for this reason is especially advantageous in vapor degreasing applications since at these temperatures the hot vapor has more of a tendency to dissolve high melting greases, or fluxes as well as oil residues and the like.
- the solvent vapors tend to condense on the article until the articles are heated by the vapors from room temperature up to the temperature of the vapor.
- the condensation thus formed 3,554,918 Patented Jan. 12, 1971 ice on the articles tends to drip back into the solvent reservoir taking with it some of the soil on the article. For this reason the ability of a cleaning solvent to condense on the surface is especially advantageous.
- Tetrachlorodifluoroethane also is a better solvent than materials such as trichlorotrifluoromethane, however, it suffers the disadvantage that it is solidus at room temperature whereas the latter is liquidus. Accordingly tetrachlorodifluoroethane is more diflicult to handle than liquid type cleaning solvents.
- the above object of this invention may be accomplished by a novel binary azeotropic composition of tetrachlorodifiuoroethane (e.g. 1,1,2,2-tetrachloro-1,2-difluoroethane) and either methanol or n-butanol or secondary butanol or iso-butanol; ternary azeotropes of tetrachlorodifluoroethane (e.g., 1,1,2,2-tetrachloro-1,2-difluoroethane) trichloroethylene and either methanol or ethanol or isopropanol; and ternary azeotropes of tetrachlorodifiuoroethane (e.g.
- 1,1,2,2-tetrachloro 1,Z-difluoroethane 1,1,2,2-tetrachloro 1,Z-difluoroethane
- trichloroethane e.g. 1,1,1-trichloroethane
- methanol or ethanol or isopropanol 1,1,2,2-tetrachloro-1,Z-difluoroethane
- 1,1,2,2-tetrachloro-1,Z-difluoroethane is a preferred tetrachlorodifluoroethane
- the isomer, 1,l,1,2-tetrachloro-2,2- difluoroethane may be substituted therefore in whole or in part and especially in minor amounts or trace amounts.
- the preferred trichloroethane comprises the 1,1,1-trichloroethane isomer.
- All of these mixtures form azeotropes which distill at a constant temperature, the liquid phase and the vapor phase in equilibrium therewith having the same composition.
- Such mixture is relatively nonflammable and nontoxic in both the liquid phase and the vapor phase.
- These mixtures are particularly. useful as solvents for greases, oils, waxes, and the like and cleaning electric motors, compressors, lithographic plates, typewriters, precision instruments, gauges, and the like and are particular useful for cleaning printed circuits.
- the azeotropic mixtures are obtained at approximately 760 mm. Hg a variation in pressure and consequently a change in the compositions and boiling points are also intended to be within the broad scope of the invention.
- the azeotropes may contain many different proportions of all of the aforementioned components provided a constant boiling mixture is obtained at the various pressures at which the compositions are used. Stated otherwise any pressure may be employed to obtain the azeotropes of this invention as long as a three com ponent or two component constant boiling mixture is obtained, and accordingly the ratio of components of the azeotropes of the invention will also vary.
- the present invention relates to the aforementioned azeotropes that boil at atmospheric pressure i about 25, especially 1 about 15 mm. Hg.
- Example IIX The method of Example I is repeated using different mixtures of alcohols and/or 1,1,1-trichloroethane or trichloroethylene and 1,1,2,2-tetrachloro-1,2-difluoroethane, the results of which are as follows:
- the board is then passed over a molten solder bath, contacting the desired joints with the molten metal, whereby the soldering is effected. After cooling, the excess rosin flux remaining on the board must be removed since, if present in the final assemly, it will lead to corrosion, poor electrical resistance and other deleterious properties.
- the board is cleaned by placing it in an ultrasonic bath of any of the aforementioned azeotropes and operating at about 32 kilocycles per second at about 1020 F. belowtheboiling point of the particular azeotrope for about one minute.
- An azeotropic mixture consisting essentially of about 24.3 parts 1,1,2,2-tetrachloro-1,2-di-fluorocthane,
- Printed circuit boards are usually prepared by impregnating glass cloth, nylon, or paper laminates with a phenolformaldehyde resin or an epoxy resin.
- Printed circuits are prepared by a variety of methods. In a typical procedure, the board consists originally of a phenolic resin impregnated base to which is bonded a sheet of copper, 2 to 4 mils thick, covering one surface of the board, The desired circuit is drawn on the copper with an asphalt based ink using the silk screen method.
- excess copper is then removed by etching with a ferric about 30.9 parts i-propanol and about 44.8 parts trichloroethylene on a weight basis.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Detergent Compositions (AREA)
- Manufacturing Of Printed Wiring (AREA)
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67771567A | 1967-10-24 | 1967-10-24 | |
| US5408470A | 1970-06-02 | 1970-06-02 | |
| US5408670A | 1970-06-02 | 1970-06-02 | |
| US5408370A | 1970-06-02 | 1970-06-02 | |
| US5408170A | 1970-06-02 | 1970-06-02 | |
| US5408570A | 1970-06-02 | 1970-06-02 | |
| US5408270A | 1970-06-02 | 1970-06-02 | |
| US00255972A US3833507A (en) | 1967-10-24 | 1972-05-23 | Azeotropic composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3554918A true US3554918A (en) | 1971-01-12 |
Family
ID=27574375
Family Applications (8)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US677715D Pending USB677715I5 (enExample) | 1967-10-24 | ||
| US677715A Expired - Lifetime US3554918A (en) | 1967-10-24 | 1967-10-24 | Azeotropic composition |
| US54081A Expired - Lifetime US3671442A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US54086A Expired - Lifetime US3671445A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US54085A Expired - Lifetime US3671446A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US54082A Expired - Lifetime US3671443A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US54084A Expired - Lifetime US3671444A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US00255972A Expired - Lifetime US3833507A (en) | 1967-10-24 | 1972-05-23 | Azeotropic composition |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US677715D Pending USB677715I5 (enExample) | 1967-10-24 |
Family Applications After (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US54081A Expired - Lifetime US3671442A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US54086A Expired - Lifetime US3671445A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US54085A Expired - Lifetime US3671446A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US54082A Expired - Lifetime US3671443A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US54084A Expired - Lifetime US3671444A (en) | 1967-10-24 | 1970-06-02 | Azeotropic composition |
| US00255972A Expired - Lifetime US3833507A (en) | 1967-10-24 | 1972-05-23 | Azeotropic composition |
Country Status (2)
| Country | Link |
|---|---|
| US (8) | US3554918A (enExample) |
| CA (1) | CA955820A (enExample) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904542A (en) * | 1973-03-06 | 1975-09-09 | Phillips Petroleum Co | Azeotropic composition of fluorocarbon |
| US3957530A (en) * | 1973-03-06 | 1976-05-18 | Phillips Petroleum Company | Ternary azeotropic paint stripping compositions |
| US4035258A (en) * | 1973-08-27 | 1977-07-12 | Phillips Petroleum Company | Azeotropic compositions |
| US4169807A (en) * | 1978-03-20 | 1979-10-02 | Rca Corporation | Novel solvent drying agent |
| US6342471B1 (en) * | 2000-01-25 | 2002-01-29 | Toney M. Jackson | Electrical contact cleaner |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936387A (en) * | 1972-02-04 | 1976-02-03 | Phillips Petroleum Company | Azeotrope of 1,2-dichloro-1-fluoroethane and methanol |
| US4023984A (en) * | 1973-02-02 | 1977-05-17 | Imperial Chemical Industries Limited | Azeotropic solvent composition for cleaning |
| JPS5958099A (ja) * | 1982-09-27 | 1984-04-03 | ダイキン工業株式会社 | 洗浄剤組成物 |
| US4524011A (en) * | 1982-11-08 | 1985-06-18 | The Dow Chemical Company | Flux removal solvent blend |
| KR840006450A (ko) * | 1982-11-08 | 1984-11-30 | 리차드 고든 워터맨 | 용제잔류물 제거용 용매 혼합물 |
| JPS61190596A (ja) * | 1985-02-20 | 1986-08-25 | ダイキン工業株式会社 | 共沸様組成物 |
| DE3702399A1 (de) * | 1987-01-28 | 1988-08-11 | Kali Chemie Ag | Neue gemische mit difluortetrachloraethan |
| US5552080A (en) * | 1993-04-15 | 1996-09-03 | Elf Atochem North America, Inc. | Cold cleaning solvents |
| US5514221A (en) * | 1993-04-15 | 1996-05-07 | Elf Atochem North America, Inc. | Cold cleaning process |
| FR2855069B1 (fr) * | 2003-05-22 | 2006-06-16 | Solvay | Procede pour la separation d'au moins un compose organique |
-
0
- US US677715D patent/USB677715I5/en active Pending
-
1967
- 1967-10-24 US US677715A patent/US3554918A/en not_active Expired - Lifetime
-
1968
- 1968-08-13 CA CA027,298A patent/CA955820A/en not_active Expired
-
1970
- 1970-06-02 US US54081A patent/US3671442A/en not_active Expired - Lifetime
- 1970-06-02 US US54086A patent/US3671445A/en not_active Expired - Lifetime
- 1970-06-02 US US54085A patent/US3671446A/en not_active Expired - Lifetime
- 1970-06-02 US US54082A patent/US3671443A/en not_active Expired - Lifetime
- 1970-06-02 US US54084A patent/US3671444A/en not_active Expired - Lifetime
-
1972
- 1972-05-23 US US00255972A patent/US3833507A/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904542A (en) * | 1973-03-06 | 1975-09-09 | Phillips Petroleum Co | Azeotropic composition of fluorocarbon |
| US3957530A (en) * | 1973-03-06 | 1976-05-18 | Phillips Petroleum Company | Ternary azeotropic paint stripping compositions |
| US4035258A (en) * | 1973-08-27 | 1977-07-12 | Phillips Petroleum Company | Azeotropic compositions |
| US4169807A (en) * | 1978-03-20 | 1979-10-02 | Rca Corporation | Novel solvent drying agent |
| US6342471B1 (en) * | 2000-01-25 | 2002-01-29 | Toney M. Jackson | Electrical contact cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| US3671443A (en) | 1972-06-20 |
| US3671446A (en) | 1972-06-20 |
| US3671442A (en) | 1972-06-20 |
| USB677715I5 (enExample) | |
| US3833507A (en) | 1974-09-03 |
| CA955820A (en) | 1974-10-08 |
| US3671444A (en) | 1972-06-20 |
| US3671445A (en) | 1972-06-20 |
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Owner name: UNION CARBIDE CORPORATION, Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:MORGAN BANK (DELAWARE) AS COLLATERAL AGENT;REEL/FRAME:004665/0131 Effective date: 19860925 |