Patent EP0430131A1 successfully refreshed from Google Patents.
EP0430131A1
Expired / Lapsed
EP
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Working fluid
Assignee: Panasonic Holdings Corp
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Filing: 1990-11-26
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Granted: —
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Expires: 2010-11-26
Abstract
Abstract A working fluid comprising chlorodifluoromethane, at least one fluorocarbon having a boiling point of -60°C to -40°C under atmospheric pressure selected from the group consisting of methane derivatives and ethane derivatives which consist one or two carbon atom, hydrogen atoms and fluorine atoms and at least one halogenated ethane which consists of two carbon atoms, 1, 2 or 3 hydrogen atoms, 0, 1 or 2 chlorine atoms and balance of fluorine atoms and has a boiling point of not lower than -30°C under atmospheric pressure, which has very small influence on the ozone layer in the stratosphere and is suitable as a substitute working fluid for dichlorodifluoromethane.
Inventors
- 👤 Yuji Yoshida
- 👤 Koji Arita
- 👤 Takeshi Tomizawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 20:25
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C09K2205/00; C09K2205/10; C09K2205/12; C09K2205/122
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
85 words
A working fluid comprising chlorodifluoromethane, at least one fluorocarbon having a boiling point of -60°C to -40°C under atmospheric pressure selected from the group consisting of methane derivatives and ethane derivatives which consist one or two carbon atom, hydrogen atoms and fluorine atoms and at least one halogenated ethane which consists of two carbon atoms, 1, 2 or 3 hydrogen atoms, 0, 1 or 2 chlorine atoms and balance of fluorine atoms and has a boiling point of not lower than -30°C under atmospheric pressure.
Claim 2
Dependent Claim
46 words
The working fluid as claimed in claim 1, which comprises 1 to 95 % by weight of chlorodifluoromethane, 1 to 95 % by weight of said fluorocarbon having a boiling point of -60°C to -40°C and 5 to 95 % by weight of said halogenated ethane.
Claim 3
Dependent Claim
25 words
The working fluid as claimed in claim 1, wherein said fluorocarbon is at least one selected from the group consisting of difluoromethane, pentafluoroethane, and trifluoroethane.
Claim 4
Dependent Claim
28 words
The working fluid as claimed in claim 1, wherein said halogenated ethane is at least one selected from the group consisting of tetrafluoroethane, chlorotetrafluoroethane, chlorodifluoroethane, dichlorotrifluoroethane and dichlorofluoroethane.
Claim 5
Dependent Claim
80 words
The working fluid as claimed in claim 1, which comprises 85 % by weight or less of difluoromethane, 95 % by weight or less of chlorodifluoromethane, and 55 to 95 % by weight of tetrafluoroethane or 40 to 90 % by weight of chlorotetrafluoroethane or 25 to 85 % by weight of chlorodifluoroethane or 10 to 85 % by weight of dichlorotrifluoroethane or 5 to 80 % by weight of dichlorofluoroethane, with the total amount being 100 % by weight.
Claim 6
Dependent Claim
80 words
The working fluid as claimed in claim 1, which comprises 75 % by weight or less of difluoromethane, 90 % by weight or less of chlorodifluoromethane, and 70 to 90 % by weight of tetrafluoroethane or 50 to 90 % by weight of chlorotetrafluoroethane or 35 to 85 % by weight of chlorodifluoroethane or 15 to 80 % by weight of dichlorotrifluoroethane or 10 to 75 % by weight of dichlorofluoroethane, with the total amount being 100 % by weight.
Claim 7
Dependent Claim
34 words
The working fluid as claimed in claim 1, which comprises 25% by weight or less of difluoromethane, 45 % by weight or less of chlorodifluoromethane and 55 to 95 % by weight of tetrafluoroethane.
Claim 8
Dependent Claim
35 words
The working fluid as claimed in claim 7, which comprises 15 % by weight or less of difluoromethane, 30 % by weight or less of chlorodifluoromethane and 70 to 90 % by weight of tetrafluoroethane.
Claim 9
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 35 % by weight or less of difluoromethane, 60 % by weight or less of chlorodifluoromethane and 40 to 90 % by weight of chlorotetrafluoroethane.
Claim 10
Dependent Claim
35 words
The working fluid as claimed in claim 9, which comprises 25 % by weight or less of difluoromethane, 50 % by weight or less of chlorodifluoromethane and 50 to 90 % by weight of chlorotetrafluoroethane.
Claim 11
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 45 % by weight or less of difluoromethane, 75 % by weight or less of chlorodifluoromethane and 25 to 85 % by weight of chlorodifluoroethane.
Claim 12
Dependent Claim
35 words
The working fluid as claimed in claim 11, which comprises 35 % by weight or less of difluoromethane, 65 % by weight or less of chlorodifluoromethane and 35 to 85 % by weight of chlorodifluoroethane.
Claim 13
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 85 % by weight or less of difluoromethane, 90 % by weight or less of chlorodifluoromethane and 10 to 85 % by weight of dichlorotrifluoroethane.
Claim 14
Dependent Claim
35 words
The working fluid as claimed in claim 13, which comprises 70 % by weight or less of difluoromethane, 85 % by weight or less of chlorodifluoromethane and 15 to 80 % by weight of dichlorotrifluoroethane.
Claim 15
Dependent Claim
35 words
The working fluid as claimed in claim I, which comprises 85 % by weight or less of difluoromethane, 95 % by weight or less of chlorodifluoromethane and 5 to 80 % by weight of dichlorofluoroethane.
Claim 16
Dependent Claim
35 words
The working fluid as claimed in claim 15, which comprises 75 % by weight or less of difluoromethane, 90 % by weight or less of chlorodifluoromethane and 10 to 75 % by weight of dichlorofluoroethane.
Claim 17
Dependent Claim
80 words
The working fluid as claimed in claim 1, which comprises 95 % by weight or less of pentafluoroethane, 95 % by weight or less of chlorodifluoromethane, and 55 to 80 % by weight of tetrafluoroethane or 40 to 75 % by weight of chlorotetrafluoroethane or 25 to 65 % by weight of chlorodifluoroethane or 10 to 65 % by weight of dichlorotrifluoroethane or 5 to 60 % by weight of dichlorofluoroethane, with the total amount being 100 % by weight.
Claim 18
Dependent Claim
80 words
The working fluid as claimed in claim 1, which comprises 90 % by weight or less of pentafluoroethane, 90 % by weight or less of chlorodifluoromethane, and 65 to 75 % by weight of tetrafluoroethane or 50 to 70 % by weight of chlorotetrafluoroethane or 35 to 65 % by weight of chlorodifluoroethane or 15 to 60 % by weight of dichlorotrifluoroethane or 10 to 50 % by weight of dichlorofluoroethane, with the total amount being 100 % by weight.
Claim 19
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 45 % by weight or less of pentafluoroethane, 45 % by weight or less of chlorodifluoromethane and 55 to 80 % by weight of tetrafluoroethane.
Claim 20
Dependent Claim
35 words
The working fluid as claimed in claim 19, which comprises 35 % by weight or less of pentafluoroethane, 35 % by weight or less of chlorodifluoromethane and 65 to 75 % by weight of tetrafluoroethane.
Claim 21
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 60 % by weight or less of pentafluoroethane, 60 % by weight or less of chlorodifluoromethane and 40 to 75 % by weight of chlorotetrafluoroethane.
Claim 22
Dependent Claim
35 words
The working fluid as claimed in claim 21, which comprises 50 % by weight or less of pentafluoroethane, 50 % by weight or less of chlorodifluoromethane and 50 to 75 % by weight of chlorotetrafluoroethane.
Claim 23
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 70 % by weight or less of pentafluoroethane, 75 % by weight or less of chlorodifluoromethane and 25 to 65 % by weight of chlorodifluoroethane.
Claim 24
Dependent Claim
35 words
The working fluid as claimed in claim 23, which comprises 60 % by weight or less of pentafluoroethane, 65 % by weight or less of chlorodifluoromethane and 35 to 65 % by weight of chlorodifluoroethane.
Claim 25
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 90 % by weight or less of pentafluoroethane, 90 % by weight or less of chlorodifluoromethane and 10 to 65 % by weight of dichlorotrifluoroethane.
Claim 26
Dependent Claim
35 words
The working fluid as claimed in claim 25, which comprises 85 % by weight or less of pentafluoroethane, 85 % by weight or less of chlorodifluoromethane and 15 to 60 % by weight of dichlorotrifluoroethane.
Claim 27
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 95 % by weight or less of pentafluoroethane, 95 % by weight or less of chlorodifluoromethane and 5 to 60 % by weight of dichlorofluoroethane.
Claim 28
Dependent Claim
35 words
The working fluid as claimed in claim 27, which comprises 90 % by weight or less of pentafluoroethane, 90 % by weight or less of chlorodifluoromethane and 10 to 50 % by weight of dichlorofluoroethane.
Claim 29
Dependent Claim
80 words
The working fluid as claimed in claim 1, which comprises 90 % by weight or less of trifluoroethane, 95 % by weight or less of chlorodifluoromethane, and 55 to 85 % by weight of tetrafluoroethane or 40 to 80 % by weight of chlorotetrafluoroethane or 25 to 70 % by weight of chlorodifluoroethane or 10 to 70 % by weight of dichlorotrifluoroethane or 5 to 65 % by weight of dichlorofluoroethane, with the total amount being 100 % by weight.
Claim 30
Dependent Claim
80 words
The working fluid as claimed in claim 1, which comprises 85 % by weight or less of trifluoroethane, 90 % by weight or less of chlorodifluoromethane, and 65 to 80 % by weight of tetrafluoroethane or 50 to 80 % by weight of chlorotetrafluoroethane or 35 to 70 % by weight of chlorodifluoroethane or 15 to 65 % by weight of dichlorotrifluoroethane or 10 to 60 % by weight of dichlorofluoroethane, with the total amount being 100 % by weight.
Claim 31
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 40 % by weight or less of trifluoroethane, 45 % by weight or less of chlorodifluoromethane and 55 to 85 % by weight of tetrafluoroethane.
Claim 32
Dependent Claim
35 words
The working fluid as claimed in claim 31, which comprises 25 % by weight or less of trifluoroethane, 35 % by weight or less of chlorodifluoromethane and 65 to 80 % by weight of tetrafluoroethane.
Claim 33
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 55 % by weight or less of trifluoroethane, 60 % by weight or less of chlorodifluoromethane and 40 to 80 % by weight of chlorotetrafluoroethane.
Claim 34
Dependent Claim
35 words
The working fluid as claimed in claim 33, which comprises 40 % by weight or less of trifluoroethane, 50 % by weight or less of chlorodifluoromethane and 50 to 80 % by weight of chlorotetrafluoroethane.
Claim 35
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 60 % by weight or less of trifluoroethane, 75 % by weight or less of chlorodifluoromethane and 25 to 70 % by weight of chlorodifluoroethane.
Claim 36
Dependent Claim
35 words
The working fluid as claimed in claim 35, which comprises 50 % by weight or less of trifluoroethane, 65 % by weight or less of chlorodifluoromethane and 35 to 70 % by weight of chlorodifluoroethane.
Claim 37
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 90 % by weight or less of trifluoroethane, 90 % by weight or less of chlorodifluoromethane and 10 to 70 % by weight of dichlorotrifluoroethane.
Claim 38
Dependent Claim
35 words
The working fluid as claimed in claim 37, which comprises 80 % by weight or less of trifluoroethane, 85 % by weight or less of chlorodifluoromethane and 15 to 65 % by weight of dichlorotrifluoroethane.
Claim 39
Dependent Claim
35 words
The working fluid as claimed in claim 1, which comprises 90 % by weight or less of trifluoroethane, 95 % by weight or less of chlorodifluoromethane and 5 to 65 % by weight of dichlorofluoroethane.
Claim 40
Dependent Claim
35 words
The working fluid as claimed in claim 39, which comprises 85 % by weight or less of trifluoroethane, 90 % by weight or less of chlorodifluoromethane and 10 to 60 % by weight of dichlorofluoroethane.
References Cited (Backward Citations)
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