US5096606A
Expired / Lapsed
US
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Refrigeration oil composition containing a fluoroethane and an ester compound
Assignee: Kao Corp
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Filing: 1990-08-16
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Granted: 1992-03-17
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Expires: 2010-08-16
Abstract
Abstract The refrigeration oil composition comprises (1) a hydrogenated fluoroethane and (2) an ester compound obtained from (2-a) an aliphatic polyhydric alcohol having 1 to 6 primary hydroxyl groups, (2-b) a saturated aliphatic monocarboxylic acid having 2 to 9 carbon atoms, straight or branched, or a derivative thereof and (2-c) a saturated aliphatic dicarboxylic acid having 2 to 10 carbon atoms, straight or branched, or a derivative thereof, said ester compound having a kinematic viscosity at 100 degree C. of 1 to 100 cst.
Inventors
- 👤 Toshiya Hagihara
- 👤 Akimitsu Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:40
CPC Classifications
C; C10; C10M; C10M105/00; C10M105/08; C10M105/32; C10M105/42; C10M105/44; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C10M111/00; C10M171/00; C10M171/008; C09K2205/00; C09K2205/24; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/065; C10M2201/066; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2207/026; C10M2207/04; C10M2207/046; C10M2207/28; C10M2207/30; C10M2207/301; C10M2207/302; C10M2207/3025; C10M2209/00; C10M2209/10; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/085; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2227/00; C10M2227/02; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
A refrigeration oil composition comprising (1) fluoroethane selected from the group consisting of 1,1,1,2-fluoroethane, pentafluoroethane, 1,1,1 trifluoroethane, and 1,1-difluoroethane and (2) an ester compound which is a reaction product obtained from (a) an aliphatic polyhydric alcohol having 1 to 6 primary hydroxyl groups, (b) a saturated aliphatic straight or branches monocarboxylic acid having 2 to 9 carbon atoms, or a derivative thereof and (c) a saturated aliphatic straight or branched dicarboxylic acid having 2 to 10 carbon atoms, or a derivative thereof, said ester compound having a kinematic viscosity at 100 degree C. of 1 to 100 cst.
Claim 2
Dependent Claim
98 words
A refrigeration oil composition comprising (1) fluoroethane selected from the group consisting of 1,1,1,2-fluoroethane, pentafluoroethane, 1,1,1 trifluoroethane, and 1,1-difluoroethane and (2) an ester compound which is a reaction product obtained from (a) an aliphatic polyhydric alcohol having 1 to 6 primary hydroxyl groups, (b) a saturated aliphatic straight or branches monocarboxylic acid having 2 to 9 carbon atoms, or a derivative thereof and (c) a saturated aliphatic straight or branched dicarboxylic acid having 2 to 10 carbon atoms, or a derivative thereof, said ester compound having a kinematic viscosity at 100 degree C. of 1 to 100 cst.
Claim 3
Dependent Claim
30 words
The composition as claimed in claim 1, in which a weight ratio of (1) the fluoroethane to (2) the ester compound is in the range of from 10/1 to 1/5.
Claim 4
Dependent Claim
27 words
The composition as claimed in claim 1, which further comprises an additional lubricant at a weight ratio to the ester compound of up to 95 wt. %.
Claim 5
Dependent Claim
24 words
The composition as claimed in claim 1, wherein the ester compound has a kinematic viscosity at 100 degree C. of 1 to 20 cst.
Claim 6
Dependent Claim
24 words
The composition as claimed in claim 1, wherein the ester compound has a kinematic viscosity at 100 degree C. of 20 to 100 cst.
Claim 7
Dependent Claim
66 words
The composition as claimed in claim 1, in which the ester compound is obtained from (a) an aliphatic dihydric alcohol having 1 to 2 primary hydroxyl groups, (b) a saturated straight or branched aliphatic monocarboxylic acid having 2 to 9 carbon atoms, or a derivative thereof and (c) a saturated straight or branched aliphatic dicarboxylic acid having 2 to 8 carbon atoms or a derivative thereof.
Claim 8
Dependent Claim
32 words
The composition as claimed in claim 1, in which the ester compound is obtained from 1 mole of (2-a), 4 mole or less of (2-b) and 0.9 mole or less of (2-c).
Claim 9
Dependent Claim
22 words
The composition as claimed in claim 1, in which the ester compound has a saponification value of 330 mg KOH/g or larger.
Claim 10
Dependent Claim
12 words
The composition as claimed in claim 1, which the fluoroethane is 1,1,1,2-tetrafluoroethane.
References Cited (Backward Citations)
GB1460665A
Cited
US4199461A
Cited
JPS5636570A
Cited
US4557850A
Cited
JPS5815592A
Cited
JPS59164393A
Cited
JPS6162596A
Cited
US4780229A
Cited
JPS61171799A
Cited
JPS62143609A
Cited
JPS62292895A
Cited
US4755316A
Cited
JPH02592A
Cited
JPH01181895A
Cited
GB2216541A
Cited
US4948525A
Cited
US4851144A
Cited
JPH05155093A
Cited
JPH06125494A
Cited
JPH06125495A
Cited
JPH06131548A
Cited
JPH06133241A
Cited
JPH08103594A
Cited
JPH09164393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |