US5154846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorinated butylene oxide based refrigerant lubricants
Assignee: Honeywell International Inc
•
Filing: 1990-11-16
•
Granted: 1992-10-13
•
Expires: 2010-11-16
Abstract
Abstract The present invention provides a novel lubricating composition comprising polybutylene glycol having a cap of a fluorinated alkyl group on at least one end thereof. The composition has a molecular weight between about 300 and about 4,000, and a viscosity of about 5 to about 150 centistokes at 37° C. The composition is miscible in combination with refrigerant. As such, the present invention provides a composition for use in compression refrigeration and air-conditioning comprising: (a) a refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon; and (b) a sufficient amount to provide lubrication of at least one polybutylene glycol having a cap of a fluorinated alkyl group on at least one end thereof.
Inventors
- 👤 Raymond H. P. Thomas
- 👤 David Nalewajek
- 👤 Hang T. Pham
- 👤 David P. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:40
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C10; C10M; C10M101/00; C10M101/02; C10M105/00; C10M105/02; C10M105/06; C10M105/08; C10M105/32; C10M107/00; C10M107/20; C10M107/30; C10M107/32; C10M107/34; C10M107/38; C10M111/00; C10M111/04; C10M171/00; C10M171/008; C10M2203/00; C10M2203/06; C10M2203/065; C10M2203/10; C10M2203/1006; C10M2203/102; C10M2203/1025; C10M2203/104; C10M2203/1045; C10M2203/106; C10M2203/1065; C10M2203/108; C10M2203/1085; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/04; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/026; C10M2207/027; C10M2207/028; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/2805; C10M2207/283; C10M2207/34; C10M2207/345; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/102; C10M2209/103; C10M2209/1033; C10M2209/104; C10M2209/1045; C10M2209/105; C10M2209/1055; C10M2209/106; C10M2209/1065; C10M2209/107; C10M2209/1075; C10M2209/108; C10M2209/1085; C10M2209/109; C10M2209/1095; C10M2211/00; C10M2211/003; C10M2211/02; C10M2211/022; C10M2211/04; C10M2211/042; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/023; C10M2213/04; C10M2213/043; C10M2213/06; C10M2213/0606; C10M2213/062; C10M2213/0623; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/086; C10M2215/24; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/047; C10M2223/06; C10M2223/065; C10M2225/00; C10M2225/02; C10M2227/00; C10M2227/09; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10M2229/051; C10N; C10N2010/00; C10N2010/12; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
81 words
A composition for use in compression refrigeration and air-conditioning comprising (a) at least one refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon; and (b) a sufficient amount to provide lubrication of at least one polybutylene glycol having a cap of a fluorinated alkyl group on at least one end thereof wherein said lubricant has a molecular weight between about 300 and about 4,000, and has a viscosity of about 5 to about 150 centistokes at 37° C.
Claim 2
Dependent Claim
81 words
A composition for use in compression refrigeration and air-conditioning comprising (a) at least one refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon; and (b) a sufficient amount to provide lubrication of at least one polybutylene glycol having a cap of a fluorinated alkyl group on at least one end thereof wherein said lubricant has a molecular weight between about 300 and about 4,000, and has a viscosity of about 5 to about 150 centistokes at 37° C.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein said refrigerant is a hydrofluorocarbon.
Claim 4
Dependent Claim
10 words
The composition of claim 2 wherein said hydrofluorocarbon is tetrafluoroethane.
Claim 5
Dependent Claim
10 words
The composition of claim 3 wherein said tetrafluoroethane is 1,1,1,2-tetrafluoroethane.
Claim 6
Dependent Claim
13 words
The composition of claim 1 wherein said component (b) additionally contains polypropylene glycol.
Claim 7
Dependent Claim
23 words
The composition of claim 5 wherein said polypropylene glycol has a cap of a fluorinated alkyl group on at least one end thereof.
Claim 8
Dependent Claim
78 words
The composition of claim 1 wherein said polybutylene glycol has the formula R.sub.1 OR.sub.2 [C.sub.4 H.sub.8 O].sub.m [C.sub.3 H.sub.6 O].sub.n R.sub.3 wherein m is 4 to 36, n is 0 to 36, R 2 is --C p H 2p O-- wherein p is 0 to 4, and R 1 and R 3 are independently selected from the group consisting of hydrogen, alkyl group, and fluorinated alkyl group wherein the ratio of m to n is at least 2.
Claim 9
Dependent Claim
13 words
The composition of claim 7 wherein said composition additionally comprises a non-fluorinated lubricant.
Claim 10
Dependent Claim
12 words
The composition of claim 8 wherein said composition additionally comprises mineral oil.
Claim 11
Dependent Claim
12 words
The composition of claim 8 wherein said composition additionally comprises alkyl benzene.
Claim 12
Dependent Claim
12 words
The composition of claim 8 wherein said composition additionally comprises an ester.
Claim 13
Dependent Claim
78 words
A lubricating composition comprising a polyoxyalkylene glycol having a cap of a fluorinated alkyl group on at least one end thereof wherein said polyoxyalkylene glycol is formed from copolymer of propylene oxide and butylene oxide and said composition has a molecular weight between about 300 and about 4,000, and a viscosity of about 5 to about 150 centistokes at 37° C., and is miscible with a refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon.
Claim 14
Dependent Claim
78 words
A lubricating composition comprising a polyoxyalkylene glycol having a cap of a fluorinated alkyl group on at least one end thereof wherein said polyoxyalkylene glycol is formed from copolymer of propylene oxide and butylene oxide and said composition has a molecular weight between about 300 and about 4,000, and a viscosity of about 5 to about 150 centistokes at 37° C., and is miscible with a refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon.
Claim 15
Independent Claim
101 words
A method for improving lubrication in compression refrigeration and air-conditioning equipment using a refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon comprising the step of: employing a sufficient amount to provide lubrication of at least one polybutylene glycol having a cap of a fluorinated alkyl group on at least one end thereof wherein said lubricant has a molecular weight between about 300 and about 4,000, has a viscosity of about 5 to about 150 centistokes at 37° C., and is miscible in combination with said refrigerant in the range between -40° C. and at least +20° C.
Claim 16
Independent Claim
101 words
A method for improving lubrication in compression refrigeration and air-conditioning equipment using a refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon comprising the step of: employing a sufficient amount to provide lubrication of at least one polybutylene glycol having a cap of a fluorinated alkyl group on at least one end thereof wherein said lubricant has a molecular weight between about 300 and about 4,000, has a viscosity of about 5 to about 150 centistokes at 37° C., and is miscible in combination with said refrigerant in the range between -40° C. and at least +20° C.
Claim 17
Dependent Claim
11 words
The method of claim 13 wherein said refrigerant is a hydrofluorocarbon.
Claim 18
Dependent Claim
10 words
The method of claim 14 wherein said hydrofluorocarbon is tetrafluoroethane.
Claim 19
Dependent Claim
10 words
The method of claim 15 wherein said tetrafluoroethane is 1,1,1,2-tetrafluoroethane.
Claim 20
Dependent Claim
12 words
The method of claim 13 wherein said method additionally employs polypropylene glycol.
Claim 21
Dependent Claim
78 words
The method of claim 13 wherein said polybutylene glycol has the formula R.sub.1 OR.sub.2 [C.sub.4 H.sub.8 O].sub.m [C.sub.3 H.sub.6 O].sub.n R.sub.3 wherein m is 4 to 36, n is 0 to 36, R 2 is --C p H 2p O-- wherein p is 0 to 4, and R 1 and R 3 are independently selected from the group consisting of hydrogen, alkyl group, and fluorinated alkyl group wherein the ratio of m to n is at least 2.
Claim 22
Dependent Claim
82 words
A composition for use in compression refrigeration and air-conditioning comprising: (a) at least one refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon; (b) a sufficient amount to provide lubrication of at least one polybutylene glycol wherein said lubricant has a molecular weight of about 300 to about 4,000 and has a viscosity of about 5 to about 150 centistokes at 37° C.; and (c) a non-fluorinated lubricant selected from the group consisting of mineral oil and alkyl benzene
Claim 23
Dependent Claim
82 words
A composition for use in compression refrigeration and air-conditioning comprising: (a) at least one refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon; (b) a sufficient amount to provide lubrication of at least one polybutylene glycol wherein said lubricant has a molecular weight of about 300 to about 4,000 and has a viscosity of about 5 to about 150 centistokes at 37° C.; and (c) a non-fluorinated lubricant selected from the group consisting of mineral oil and alkyl benzene
Claim 24
Dependent Claim
22 words
The composition of claim 19 wherein said polybutylene glycol has a cap of a fluorinated group on at least one end thereof.
Claim 25
Dependent Claim
10 words
The composition of claim 19 which additionally contains polypropylene glycol.
Claim 26
Dependent Claim
24 words
The composition of claim 19 which additionally contains polypropylene glycol having a cap of a fluorinated alkyl group on at least one end thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |