US4944890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions and process of using in refrigeration
Assignee: EIDP Inc
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Filing: 1989-05-23
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Granted: 1990-07-31
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Expires: 2009-05-23
Abstract
Abstract A blend of refrigerant with at least one fluorinated hydrocarbon, in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5, and which has an SUS viscosity at 100° F. of at least 50 and a pour point of less than about -20° C. is disclosed for use in compression refrigeration.
Inventors
- 👤 Thomas M. Deeb
- 👤 George K. Henry
- 👤 Heather L. Bergmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:34
CPC Classifications
C; C10; C10M; C10M5/00; C10M111/00; C10M111/04; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C10M105/00; C10M105/50; C10M105/52; C10M107/00; C10M107/38; C10M131/00; C10M131/02; C10M131/04; C10M169/00; C10M169/04; C10M171/00; C10M171/008; C09K2205/00; C09K2205/24; C10M2211/00; C10M2211/02; C10M2211/0206; C10M2211/022; C10M2211/0225; C10M2211/024; C10M2211/0245; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/023; C10M2213/04; C10M2213/043; C10M2213/06; C10M2213/0606; C10M2213/062; C10M2213/0623; C10M2217/00; C10M2217/02; C10M2217/026; C10N; C10N2040/00; C10N2040/06; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
85 words
A composition for use in compression refrigeration comprising: (a) a saturated hydrocarbon having 1-4 carbon atoms that is partially or fully substituted with at least one atom of chlorine or fluorine and having a normal boiling point in the range of -80° C. to +50° C.; and (b) a sufficient amount to provide lubrication of at least one fluorinated hydrocarbon in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5 and having an SUS viscosity at 100° F. of at least 50.
Claim 2
Dependent Claim
85 words
A composition for use in compression refrigeration comprising: (a) a saturated hydrocarbon having 1-4 carbon atoms that is partially or fully substituted with at least one atom of chlorine or fluorine and having a normal boiling point in the range of -80° C. to +50° C.; and (b) a sufficient amount to provide lubrication of at least one fluorinated hydrocarbon in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5 and having an SUS viscosity at 100° F. of at least 50.
Claim 3
Dependent Claim
25 words
The composition of claim 1 wherein component (a) is at least one compound selected from the group consisting of 1,1,1,2-tetrafluoroethane; 1,1,2,2-tetrafluoroethane; pentafluoroethane; dichlorodifluoromethane; and trichlorotrifluoroethane.
Claim 4
Dependent Claim
36 words
The composition of claim 1 wherein component (b) is a polymer of R f (CH 2 ) n CH═CH 2 wherein R f is from CF 3 - to C 20 F 41 - and n=0-2.
Claim 5
Dependent Claim
34 words
The composition of claim 3 wherein R f comprises about 60% C 6 F 13 -, 30% C 8 F 17 - and about 10% C 10 F 21 - and higher; and n=1.
Claim 6
Dependent Claim
46 words
The composition of claim 3 wherein said polymer is a copolymer of R f (CH 2 ) n CH═CH 2 with 1-30% by weight of at least one comonomer selected from the group consisting of a vinyl ether, an acrylate, a methacrylate, acrylonitrile and vinyl ethoxylate.
Claim 7
Dependent Claim
12 words
This composition of claim 5 wherein said comonomer is butyl vinyl ether.
Claim 8
Dependent Claim
28 words
The composition of claim 3 wherein said polymer is a copolymer of R f (CH 2 ) n CH═CH 2 and 1-10% by weight of butyl vinyl ether.
Claim 9
Dependent Claim
10 words
The composition of claim 3 wherein component (a) is 1,1,1,2-tetrafluoroethane.
Claim 10
Dependent Claim
10 words
The composition of claim 7 wherein component (a) is 1,1,1,2-tetrafluoroethane.
Claim 11
Dependent Claim
41 words
The composition of claim 1 wherein component (b) is blended with at least one fluorinated hydrocarbon in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5 and has an SUS viscosity at 100° F. of at least 50.
Claim 12
Dependent Claim
17 words
The composition of claim 3 wherein component (b) also contains up to 20% by weight of 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluoro-7-hexadecene.
Claim 13
Dependent Claim
88 words
A lubricant adapted for use in compression refrigeration with a saturated hydrocarbon refrigerant having 1-4 carbon atoms that is partially or fully substituted with at least one atom of chlorine or fluorine and has a normal boiling point in the range of -80° C. to +50° C., consisting essentially of at least one fluorinated hydrocarbon in which the ratio of fluorine-to-carbon is from about 0.5 to 5, and has an SUS viscosity at 100° F. of at least 50 and a pour point of less than -20° C.
Claim 14
Dependent Claim
88 words
A lubricant adapted for use in compression refrigeration with a saturated hydrocarbon refrigerant having 1-4 carbon atoms that is partially or fully substituted with at least one atom of chlorine or fluorine and has a normal boiling point in the range of -80° C. to +50° C., consisting essentially of at least one fluorinated hydrocarbon in which the ratio of fluorine-to-carbon is from about 0.5 to 5, and has an SUS viscosity at 100° F. of at least 50 and a pour point of less than -20° C.
Claim 15
Independent Claim
101 words
A method for lubricating compression refrigeration equipment using as the refrigerant a saturated hydrocarbon having 1-4 carbon atoms that is partially or fully substituted with at least one atom of fluorine or chlorine and has a normal boiling point in the range of -80° C. to +50° C. consisting essentially of using 10-50% by volume of the combination with said refrigerant of at least one fluorinated hydrocarbon in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5 and has an SUS viscosity at 100° F. of 100 to 1200 and a pour point of less than -20° C.
Claim 16
Independent Claim
101 words
A method for lubricating compression refrigeration equipment using as the refrigerant a saturated hydrocarbon having 1-4 carbon atoms that is partially or fully substituted with at least one atom of fluorine or chlorine and has a normal boiling point in the range of -80° C. to +50° C. consisting essentially of using 10-50% by volume of the combination with said refrigerant of at least one fluorinated hydrocarbon in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5 and has an SUS viscosity at 100° F. of 100 to 1200 and a pour point of less than -20° C.
References Cited (Backward Citations)
US4359394A
Cited
US4758366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |