EP0558823A1
Expired / Lapsed
EP
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Mixed fluorocarbon refrigerants
Assignee: Kurita Susumu
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Filing: 1992-12-30
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Granted: —
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Expires: 2012-12-30
Abstract
Abstract Chlorine and bromine-free fluorocarbon refrigerants embodying a refrigeration temperature of -30°C or less, the refrigerants comprising Freon 134a (CH₂FCF₃) and Freon 23 (CHF₃).
Inventors
- 👤 Toshio Seino
- 👤 Masanov Yosioka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 00:05
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: 9
Claim 1
Independent Claim
11 words
A mixed fluorocarbon refrigerant which comprises 1,1,1,2-tetrafluoroethane (CH₂FCF₃) and trifluoromethane (CHF₃).
Claim 2
Dependent Claim
25 words
A mixed fluorocarbon refrigerant according to claim 1, which comprises: 60 to 95% by weight of 1,1,1,2-tetrafluoroethane and 5 to 40% by weight of trifluoromethane.
Claim 3
Dependent Claim
24 words
A mixed fluorocarbon refrigerant according to claim 2, which comprises: 80± 5% by weight of 1,1,1,2-tetrafluoroethane and 20 ± 5% by weight of trifluoromethane.
Claim 4
Dependent Claim
27 words
A mixed fluorocarbon refrigerant according to claim 1, which further comprises at least one additive selected from a group of saturated hydrocarbons, unsaturated hydrocarbons and aromatic hydrocarbons.
Claim 5
Dependent Claim
22 words
A mixed fluorocarbon refrigerant according to claim 4, in which the fluorocarbon refrigerant and a refrigerator oil are introduced into a refrigerator.
Claim 6
Dependent Claim
21 words
A mixed flourocarbon refrigerant according to claim 5, in which at least one said additive is added to the refrigerator oil.
Claim 7
Dependent Claim
27 words
A mixed fluorocarbon refrigerant according to claim 6, in which the additive is added in an amount of 1 to 30% by weight to the refrigerator oil.
Claim 8
Dependent Claim
25 words
A mixed fluorocarbon refrigerant according to claim 1, 2 or 3 wherein said fluorocarbon refrigerant is introduced into a refrigerator together with a refrigerator oil.
Claim 9
Dependent Claim
29 words
A mixed fluorocarbon refrigerant according to claim 8, wherein said refrigerator oil comprises at least one additive selected from a group of saturated hydrocarbons, unsaturated hydrocarbons and aromatic hydrocarbons.
References Cited (Backward Citations)
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