EP0575794A1 - Isopropanolhaltige Reinigungslösungen mit erhöhtem Flammpunkt - Google Patents
Isopropanolhaltige Reinigungslösungen mit erhöhtem Flammpunkt Download PDFInfo
- Publication number
- EP0575794A1 EP0575794A1 EP93108989A EP93108989A EP0575794A1 EP 0575794 A1 EP0575794 A1 EP 0575794A1 EP 93108989 A EP93108989 A EP 93108989A EP 93108989 A EP93108989 A EP 93108989A EP 0575794 A1 EP0575794 A1 EP 0575794A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- isopropanol
- weight
- cleaning solutions
- flash point
- water
- 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.)
- Granted
Links
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
- C23G5/032—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
- 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
Definitions
- Particularly preferred compounds are 3,4-dihydro-perfluoro- (2-methyl-pentane), 3,4,4-trihydro-perfluoro- (2-methyl-pentane), mixtures of these two compounds in a weight ratio of about 95: 5 to about 5:95, preferably 90:10 to 10:90, 2,2,2-trifluoroethyl-1,1,2,2-tetrafluoroethyl ether and especially 1H-perfluorohexane.
- a flash point (according to DIN 51 758) of over 50 ° C.
- 1H-perfluorohexane an addition of 10% by weight already has a flash point of 50 to 52 ° C. and in the case of a mixture of about 90% by weight of 3,4-dihydro-perfluoro- (2-methylpentane) and 10 Wt .-% 3,4,4-trihydro-perfluoro (2-methyl-pentane) a flash point of over 55 ° C.
- the mixtures mentioned are single-phase at 0 ° C. and are not yet saturated with the fluorinated compound. These can therefore be mixed with water / isopropanol within a wide range.
- the invention therefore relates in particular to mixtures of predominantly isopropanol and smaller, approximately equal amounts of water and fluorinated compound.
- Preferred mixtures contain from about 70 to about 80 weight percent isopropanol, about 10 to about 12 weight percent water, and about 9 to about 18 weight percent fluorinated compound.
- a preferred mixture consists, for example, of 72.6% by weight of isopropanol, 10.7% by weight of water and 16.7% by weight of trifluoroethyl tetrafluoroethyl ether.
- Particularly preferred mixtures consist of 79.2% by weight of isopropanol, 11.7% by weight of water and 9.1% by weight of fluorinated hydrocarbon.
- the fluorinated hydrocarbons are known compounds. They can be prepared, for example, by hydrogenating the corresponding olefins [V.F. Snegirev et al., Izv. Akad. Nauk SSSR, Ser. Khim. (12), 2775 to 2781 (1983)].
- the fluorinated ethers are obtained, for example, by adding alcohols to fluorinated olefins (Houben-Weyl, 'Methods of Organic Chemistry', 4th edition, Volume V / 3 (1962), Halogentagen, page 280).
Abstract
Description
- Aus der EP-A 454 490 sind ternäre Mischungen aus Isopropanol, Wasser und einem Perfluorkohlenstoff mit einem Siedepunkt von 30 bis 70 °C bekannt, die als Reinigungslösungen dienen. Bevorzugt ist eine Mischung aus 84,5 % Isopropanol, 12,5 % Wasser und 3 % n-Perfluorhexan, jeweils bezogen auf das Gewicht.
- Es wurde nun gefunden, daß teilfluorierte Kohlenwasserstoffe oder Ether der allgemeinen Formel
CwHxFyOz
in der x < y ist, die Summe von
bedeutet und z 0 oder 1 ist,
die einen Siedepunkt im Bereich von 40 bis 100 °C zeigen, eine besonders starke Flammpunkterhöhung in solchen Reinigungslösungen bewirken. - Bevorzugt sind Verbindungen der vorstehend genannten Formel, in der x 1 bis 3, w 4 bis 6 und y 7 bis 13 bedeuten.
- Besonders bevorzugte Verbindungen sind 3,4-Dihydro-perfluor-(2-methyl-pentan), 3,4,4-Trihydro-perfluor-(2-methyl-pentan), Gemische dieser beiden Verbindungen im Gewichtsverhältnis von etwa 95 : 5 bis etwa 5 : 95, vorzugsweise 90 : 10 bis 10 : 90, 2,2,2-Trifluorethyl-1,1,2,2-tetrafluorethyl-ether und insbesondere 1H-Perfluorhexan.
- Setzt man einer Mischung aus 6,76 Gew.-Teilen Isopropanol und 1 Gew.-Teil Wasser 20 Gew.-%, bezogen auf diese Mischung, an einer der genannten Verbindungen zu, so erhält man einen Flammpunkt (nach DIN 51 758) von über 50 °C. Beim 1H-Perfluorhexan bewirkt bereits ein Zusatz von 10 Gew.-% einen Flammpunkt von 50 bis 52 °C und bei einem Gemisch aus etwa 90 Gew.-% 3,4-Dihydro-perfluor-(2-methyl-pentan) und 10 Gew.-% 3,4,4-Trihydro-perfluor-(2-methyl-pentan) einen Flammpunkt von über 55 °C.
- Die genannten Mischungen sind bei 0 °C einphasig und noch nicht an der fluorierten Verbindung gesättigt. Diese sind also mit Wasser/Isopropanol in weiten Grenzen mischbar.
- Die Erfindung betrifft deshalb insbesondere Mischungen aus überwiegend Isopropanol und kleineren, etwa gleichen Mengen Wasser und fluorierter Verbindung. Bevorzugte Mischungen enthalten etwa 70 bis etwa 80 Gew.-% Isopropanol, etwa 10 bis etwa 12 Gew.-% Wasser und etwa 9 bis etwa 18 Gew.-% fluorierte Verbindung.
- Eine bevorzugte Mischung besteht beispielsweise aus 72,6 Gew.-% Isopropanol, 10,7 Gew.-% Wasser und 16,7 Gew.-% Trifluorethyl-tetrafluorethyl-ether.
- Besonders bevorzugte Mischungen bestehen aus 79,2 Gew.-% Isopropanol, 11,7 Gew.-% Wasser und 9,1 Gew.-% fluoriertem Kohlenwasserstoff.
- Die fluorierten Kohlenwasserstoffe sind bekannte Verbindungen. Sie können beispielsweise durch Hydrierung der entsprechenden Olefine hergestellt werden [V.F. Snegirev et al., Izv. Akad. Nauk SSSR, Ser. Khim. (12), 2775 bis 2781 (1983)]. Die fluorierten Ether erhält man beispielsweise durch Anlagerung von Alkoholen an fluorierte Olefine (Houben-Weyl, 'Methoden der organischen Chemie', 4. Auflage, Band V/3 (1962), Halogenverbindungen, Seite 280).
Claims (3)
- Mischung aus etwa 70 bis 80 Gew.-% Isopropanol, etwa 10 bis 12 Gew.-% Wasser und etwa 9 bis 18 Gew.-% einer Verbindung oder mehreren Verbindungen der Formel
CwHxFyOz
in der x < y ist, die Summe von
bedeutet und z 0 oder 1 ist,
die einen Siedepunkt im Bereich von 40 bis 100 °C zeigt beziehungsweise zeigen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4218966 | 1992-06-10 | ||
DE4218966A DE4218966A1 (de) | 1992-06-10 | 1992-06-10 | Isopropanolhaltige Reinigungslösungen mit erhöhtem Flammpunkt |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0575794A1 true EP0575794A1 (de) | 1993-12-29 |
EP0575794B1 EP0575794B1 (de) | 1998-10-14 |
Family
ID=6460703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93108989A Expired - Lifetime EP0575794B1 (de) | 1992-06-10 | 1993-06-04 | Isopropanolhaltige Reinigungslösungen mit erhöhtem Flammpunkt |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0575794B1 (de) |
JP (1) | JPH0657296A (de) |
AT (1) | ATE172239T1 (de) |
CA (1) | CA2098057A1 (de) |
DE (2) | DE4218966A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0712944A2 (de) | 1994-11-21 | 1996-05-22 | AUSIMONT S.p.A. | Ternäre Lösungsmittelgemische zur Beseitigung von ölhaltigen Stoffen |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3123695B2 (ja) * | 1993-01-22 | 2001-01-15 | キヤノン株式会社 | 混合溶剤組成物、及びそれを利用する洗浄方法と洗浄処理装置 |
US6008179A (en) * | 1995-05-16 | 1999-12-28 | 3M Innovative Properties Company | Azeotrope-like compositions and their use |
CA2218890A1 (en) | 1995-05-16 | 1996-11-21 | Dean S. Milbrath | Azeotrope-like compositions and their use |
US5827446A (en) * | 1996-01-31 | 1998-10-27 | E. I. Du Pont De Nemours And Company | Nonafluoromethoxybutane compositions |
US6030934A (en) * | 1997-02-19 | 2000-02-29 | 3M Innovative Properties Company | Azeotropic compositions of methoxy-perfluoropropane and their use |
US6159917A (en) * | 1998-12-16 | 2000-12-12 | 3M Innovative Properties Company | Dry cleaning compositions containing hydrofluoroether |
TW200402411A (en) * | 2002-07-03 | 2004-02-16 | Asahi Glass Co Ltd | Solvent composition |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0389087A2 (de) * | 1989-02-01 | 1990-09-26 | Mitsui Petrochemical Industries, Ltd. | Reinigungsmittel und -verfahren |
EP0454490A2 (de) * | 1990-04-27 | 1991-10-30 | Rhone-Poulenc Chimie | Auf Isopropanol basierendes Gemisch mit verringerter Entflammbarkeit |
-
1992
- 1992-06-10 DE DE4218966A patent/DE4218966A1/de not_active Withdrawn
-
1993
- 1993-06-04 EP EP93108989A patent/EP0575794B1/de not_active Expired - Lifetime
- 1993-06-04 DE DE59309054T patent/DE59309054D1/de not_active Expired - Fee Related
- 1993-06-04 AT AT93108989T patent/ATE172239T1/de not_active IP Right Cessation
- 1993-06-08 JP JP5137943A patent/JPH0657296A/ja not_active Withdrawn
- 1993-06-09 CA CA002098057A patent/CA2098057A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0389087A2 (de) * | 1989-02-01 | 1990-09-26 | Mitsui Petrochemical Industries, Ltd. | Reinigungsmittel und -verfahren |
EP0454490A2 (de) * | 1990-04-27 | 1991-10-30 | Rhone-Poulenc Chimie | Auf Isopropanol basierendes Gemisch mit verringerter Entflammbarkeit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0712944A2 (de) | 1994-11-21 | 1996-05-22 | AUSIMONT S.p.A. | Ternäre Lösungsmittelgemische zur Beseitigung von ölhaltigen Stoffen |
EP0712944A3 (de) * | 1994-11-21 | 1997-06-04 | Ausimont Spa | Ternäre Lösungsmittelgemische zur Beseitigung von ölhaltigen Stoffen |
US5654263A (en) * | 1994-11-21 | 1997-08-05 | Ausimont S.P.A. | Ternary mixtures of solvents and their use for removing oily substances |
Also Published As
Publication number | Publication date |
---|---|
EP0575794B1 (de) | 1998-10-14 |
DE4218966A1 (de) | 1993-12-16 |
DE59309054D1 (de) | 1998-11-19 |
CA2098057A1 (en) | 1993-12-11 |
JPH0657296A (ja) | 1994-03-01 |
ATE172239T1 (de) | 1998-10-15 |
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