EP0509673A1
Expired / Lapsed
EP
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Refrigerant compositions
Assignee: Ineos Fluor Holdings Ltd
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Filing: 1992-03-31
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Granted: —
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Expires: 2012-03-31
Abstract
Abstract A refrigerant comprising a ternary or higher mixture of: (a) tetrafluoroethane and/or heptafluoropropane; (b) difluoromethane and/or 1,1,1-trifluoroethane; and optionally (c) pentafluoroethane.
Inventors
- 👤 Andrew Arthur Lindley
- 👤 James David Morrison
- 👤 Richard Llewellyn Powell
- 👤 Frederick Thomas Murphy
- 👤 Stuart Corr
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 01:15
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C09K2205/00; C09K2205/22
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
21 words
A refrigerant comprising a ternary or higher mixture of: (a) tetrafluoroethane and/or heptafluoropropane; (b) difluoromethane and/or 1,1,1-trifluoroethane; and optionally (c) pentafluoroethane.
Claim 2
Dependent Claim
22 words
A refrigerant as claimed in 1, wherein component (a) is 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, heptafluoropropane, or a combination of heptafluoropropane and 1,1,1,2-tetrafluoroethane or 1,1,2,2-tetrafluoroethane.
Claim 3
Dependent Claim
21 words
A refrigerant as claimed in claim 1 or claim 2, wherein component (a) is heptafluoropropane, optionally together with 1,1,1,2-tetrafluoroethane or 1,1,2,2-tetrafluoroethane.
Claim 4
Dependent Claim
12 words
A refrigerant as claimed in claim 3, wherein component (b) is difluoromethane.
Claim 5
Dependent Claim
13 words
A refrigerant as claimed in claim 3 or claim 4 which comprises pentafluoroethane.
Claim 6
Dependent Claim
17 words
A refrigerant as claimed in claim 1 or claim 2, wherein component (a) is 1,1,1,2-tetrafluoroethane or 1,1,2,2-tetrafluoroethane.
Claim 7
Dependent Claim
12 words
A refrigerant as claimed in claim 6, wherein component (a) is 1,1,1,2-tetrafluoroethane.
Claim 8
Dependent Claim
15 words
A refrigerant as claimed in claim 6 or claim 7, wherein component (b) is difluoromethane.
Claim 9
Dependent Claim
15 words
A refrigerant as claimed in any one of claims 6 to 8 which comprises pentafluoroethane.
Claim 10
Dependent Claim
10 words
A refrigerant comprising: (a) 1,1,1,2-tetrafluoroethane; (b) difluoromethane; and (c) pentafluoroethane.
Claim 11
Dependent Claim
43 words
A refrigerant as claimed in claim 10, wherein 1,1,1,2-tetrafluoroethane constitutes from 25 to 55 % by weight, difluoromethane constitutes from 25 to 55 % by weight, and pentafluoroethane constitutes from 5 to 45 % by weight of the total weight of the refrigerant.
Claim 12
Dependent Claim
43 words
A refrigerant as claimed in claim 10, wherein 1,1,1,2-tetrafluoroethane constitutes from 5 to 25 % by weight, difluoromethane constitutes from 25 to 75 % by weight, and pentafluoroethane constitutes from 15 to 65 % by weight of the total weight of the refrigerant.
Claim 13
Dependent Claim
43 words
A refrigerant as claimed in claim 10, wherein 1,1,1,2-tetrafluoroethane constitutes from 5 to 45 % by weight, difluoromethane constitutes from 15 to 25 % by weight, and pentafluoroethane constitutes from 35 to 75 % by weight of the total weight of the refrigerant.
Claim 14
Dependent Claim
19 words
A refrigerant composition comprising a refrigerant as claimed in any one of claims 1 to 13 and a lubricant.
Claim 15
Dependent Claim
31 words
A heat transfer device in which the working fluid comprises a refrigerant as claimed in any one of claims 1 to 13 or a refrigerant composition as claimed in claim 14.
Claim 16
Independent Claim
34 words
A method for providing cooling which comprises condensing the refrigerant claimed in any one of claims 1 to 13 and thereafter evaporating it in a heat exchange relationship with a body to be cooled.
Claim 17
Independent Claim
34 words
A method for providing heating which comprises condensing the refrigerant claimed in any one of claims 1 to 13 in a heat exchange relationship with a body to be heated and thereafter evaporating it.
References Cited (Backward Citations)
EP0430169A1
Cited
WO1992001762A1
Cited
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