Claims
- 1. The azeotrope which at substantially atmospheric pressure is characterized as about 39.8 weight per cent 1,2-dichloro-1,2-difluoroethane and about 60.2 weight per cent methyl ethyl ketone.
- 2. The azeotrope according to claim 1 characterized by a boiling point of about 80.degree. C. at about atmospheric pressure.
- 3. The azeotrope according to claim 1 characterized by a boiling point of about 80.degree. C. at about 743 millimeters pressure.
- 4. The azeotrope which at substantially atmospheric pressure is characterized as about 72.3 weight per cent 1,2-dichloro-1,2-difluoroethane and about 27.7 weight per cent acetone.
- 5. The azeotrope according to claim 4 characterized by a boiling point of about 66.degree. C. at substantially atmospheric pressure.
- 6. The azeotrope according to claim 4 characterized by a boiling point of about 66.degree. C. at about 736 millimeters pressure.
Parent Case Info
This is a division, of application serial No. 780,194, filed Mar. 22, 1977, now U.S. Pat. No. 4,092,262, issued May 30, 1978 which is a Divisional Application of Serial No. 609,115, filed Aug. 29, 1975, now U.S. Patent No. 4,035,258 issued July 12, 1977 which is a Divisional Application of Serial No. 391,663 filed Aug. 27, 1973, now U.S. Pat. No. 3,936,387, patented Feb. 3, 1976; which is a continuation-in-part of Serial No. 223,779, filed Feb. 4, 1972, now abandoned.
US Referenced Citations (5)
Divisions (3)
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Number |
Date |
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780194 |
Mar 1977 |
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Parent |
609115 |
Aug 1975 |
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Parent |
391663 |
Aug 1973 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
223779 |
Feb 1972 |
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