US5612299A
Expired / Lapsed
US
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Lubricant composition for fluorinated refrigerants used in compression refrigeration systems
Assignee: Lubrizol Corp
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Filing: 1995-06-06
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Granted: 1997-03-18
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Expires: 2015-06-06
Abstract
Abstract A lubricant composition of suitable viscosity miscible in non-chlorinated, fluorinated hydrocarbon refrigerants includes polyhydric alcohol esters, such as TMP, mono and/or di-pentaerythritol esters, made with branched carboxylic acids.
Inventors
- 👤 Glenn D. Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:08
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C10; C10M; C10M169/00; C10M105/00; C10M105/08; C10M105/32; C10M105/38; C10M171/00; C10M171/008; C09K2205/00; C09K2205/24; C09K2205/40; C09K2205/42; C10M2203/00; C10M2203/06; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/04; C10M2211/042; C10M2211/06; C10N; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
97 words
A fluid composition comprising a non-chlorinated, fluorinated hydrocarbon refrigerant and an ester lubricant base having a viscosity suitable for compression refrigeration and miscible in said non-chlorinated, fluorinated, hydrocarbon refrigerant in the range from 20° F.-80° F. at a percent by weight of lubricant base to refrigerant of up to about 3%, said lubricant base consisting essentially of an ester made by reacting dipentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 , and C 10 acid.
Claim 2
Dependent Claim
97 words
A fluid composition comprising a non-chlorinated, fluorinated hydrocarbon refrigerant and an ester lubricant base having a viscosity suitable for compression refrigeration and miscible in said non-chlorinated, fluorinated, hydrocarbon refrigerant in the range from 20° F.-80° F. at a percent by weight of lubricant base to refrigerant of up to about 3%, said lubricant base consisting essentially of an ester made by reacting dipentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 , and C 10 acid.
Claim 3
Independent Claim
112 words
A method of making a fluid composition for use in a compression refrigeration system including blending nonchlorinated, hydrofluorocarbon refrigerant and a lubricant base composition comprising an ester lubricant base having a viscosity suitable for compression refrigeration and miscible in said non-chlorinated, fluorinated, hydrocarbon refrigerant in the range from 20° F.-80° F. at a percent by weight of lubricant base to refrigerant of up to about 3%, said lubricant base consisting essentially of an ester made by reacting di-pentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 , and C 10 acid.
Claim 4
Independent Claim
112 words
A method of making a fluid composition for use in a compression refrigeration system including blending nonchlorinated, hydrofluorocarbon refrigerant and a lubricant base composition comprising an ester lubricant base having a viscosity suitable for compression refrigeration and miscible in said non-chlorinated, fluorinated, hydrocarbon refrigerant in the range from 20° F.-80° F. at a percent by weight of lubricant base to refrigerant of up to about 3%, said lubricant base consisting essentially of an ester made by reacting di-pentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 , and C 10 acid.
Claim 5
Independent Claim
95 words
A method of lubricating compression refrigeration equipment by lubricating said equipment with a fluid composition comprising a non-chlorinated, fluorinated hydrocarbon refrigerant and an ester lubricant base made by reacting di-pentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 and C 10 acid the said lubricant base being miscible with the refrigerant in the range from 20° F. to 80° F. at a percent by weight of lubricant base to refrigerant up to about 3%.
Claim 6
Independent Claim
95 words
A method of lubricating compression refrigeration equipment by lubricating said equipment with a fluid composition comprising a non-chlorinated, fluorinated hydrocarbon refrigerant and an ester lubricant base made by reacting di-pentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 and C 10 acid the said lubricant base being miscible with the refrigerant in the range from 20° F. to 80° F. at a percent by weight of lubricant base to refrigerant up to about 3%.
Claim 7
Dependent Claim
127 words
A fluid composition comprising a non-chlorinated, fluorinated hydrocarbon refrigerant and an ester lubricant base having a viscosity suitable for compression refrigeration and miscible in said non-chlorinated, fluorinated, hydrocarbon refrigerant in the range from 20° F.-80° F. said lubricant base consisting essentially of an ester made by reacting dipentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 , and C 10 acid and further an ester made by reacting di-pentaerythritol ester with an acid blend consisting of carboxylic C 5 , C 8 , and C 10 acid wherein the blend of the first ester to the second is in the ratio of about 2 to 1.
Claim 8
Dependent Claim
127 words
A fluid composition comprising a non-chlorinated, fluorinated hydrocarbon refrigerant and an ester lubricant base having a viscosity suitable for compression refrigeration and miscible in said non-chlorinated, fluorinated, hydrocarbon refrigerant in the range from 20° F.-80° F. said lubricant base consisting essentially of an ester made by reacting dipentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 , and C 10 acid and further an ester made by reacting di-pentaerythritol ester with an acid blend consisting of carboxylic C 5 , C 8 , and C 10 acid wherein the blend of the first ester to the second is in the ratio of about 2 to 1.
Claim 9
Independent Claim
142 words
A method of making a fluid composition for use in a compression refrigeration system including blending nonchlorinated, hydrofluorocarbon refrigerant and a lubricant base composition comprising an ester lubricant base having a viscosity suitable for compression refrigeration and miscible in said non-chlorinated, fluorinated, hydrocarbon refrigerant in the range from 20° F.-80° F. said lubricant base consisting essentially of an ester made by reacting di-pentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 , and C 10 acid and further an ester made by reacting di-pentaerythritol ester with an acid blend consisting of carboxylic C 5 , C 8 , and C 10 acid wherein the blend of the first ester to the second is in the ratio of about 2 to 1.
Claim 10
Independent Claim
142 words
A method of making a fluid composition for use in a compression refrigeration system including blending nonchlorinated, hydrofluorocarbon refrigerant and a lubricant base composition comprising an ester lubricant base having a viscosity suitable for compression refrigeration and miscible in said non-chlorinated, fluorinated, hydrocarbon refrigerant in the range from 20° F.-80° F. said lubricant base consisting essentially of an ester made by reacting di-pentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 , and C 10 acid and further an ester made by reacting di-pentaerythritol ester with an acid blend consisting of carboxylic C 5 , C 8 , and C 10 acid wherein the blend of the first ester to the second is in the ratio of about 2 to 1.
Claim 11
Independent Claim
108 words
A method of lubricating compression refrigeration equipment by lubricating said equipment with a fluid composition comprising a non-chlorinated, fluorinated hydrocarbon refrigerant and an ester lubricant base made by reacting di-pentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 and C 10 acid and further an ester made by reacting di-pentaerythritol ester with an acid blend consisting of carboxylic C 5 , C 8 , and C 10 acid wherein the blend of the first ester to the second is in the ratio of about 2 to 1.
Claim 12
Independent Claim
108 words
A method of lubricating compression refrigeration equipment by lubricating said equipment with a fluid composition comprising a non-chlorinated, fluorinated hydrocarbon refrigerant and an ester lubricant base made by reacting di-pentaerythritol with an acid blend consisting of substantially 70% branched 3, 5, 5, tri-methylhexanoic acid and a remainder comprising a mixture of substantially linear carboxylic C 7 , C 8 and C 10 acid and further an ester made by reacting di-pentaerythritol ester with an acid blend consisting of carboxylic C 5 , C 8 , and C 10 acid wherein the blend of the first ester to the second is in the ratio of about 2 to 1.
References Cited (Backward Citations)
US2926139A
Cited
US2852470A
Cited
US2807155A
Cited
US3458443A
Cited
US3694382A
Cited
US3857870A
Cited
US4046533A
Cited
US3878112A
Cited
US4024088A
Cited
US4159255A
Cited
US4311863A
Cited
US4826633A
Cited
US4755316A
Cited
US4816172A
Cited
US4916914A
Cited
US4927554A
Cited
US5008028A
Cited
US4851144A
Cited
WO1990012849A1
Cited
US4944890A
Cited
EP0406479A1
Cited
EP0435253A1
Cited
EP0449406A1
Cited
EP0458584A1
Cited
US5021179A
Cited
EP0470788A1
Cited
EP0475751A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-17 | 2000-09-16 | 2001-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-17 | 2004-09-16 | 2005-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-17 | 2008-09-16 | 2009-03-18 | $7700.00 | Window Closed / Lapsed |