EP0406479A1
Expired / Lapsed
EP
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Refrigeration lubricants
Assignee: Eneos Corp
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Filing: 1989-10-17
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Granted: —
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Expires: 2009-10-17
Abstract
Abstract A lubricant for hydrofluorocarbon refrigerant comprises as a main component an ester obtained by esterifying at least one straight or branched-chain monovalent fatty acid having a particular carbon number with neopentyl glycol or at least one compound of general formula (I) or a polyvalent alcohol of general formula (II) or further at least one polybasic acid having a particular carbon number: This lubricant has a sufficient compatibility with the hydrofluorocarbon refrigerant used as a refrigerant instead of the conventional chlorine-containing compounds.
Inventors
- 👤 Takashi C/O Kyodo Oil Technical Research Kaimai
- 👤 Hisashi C/O Kyodo Oil Technical Research Yano
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 02:27
CPC Classifications
C; C10; C10M; C10M105/00; C10M105/08; C10M105/32; C10M105/38; C10M105/40; C10M105/42; C10M105/44; C10M105/50; C10M105/52; C10M171/00; C10M171/008; C10M2203/00; C10M2203/003; C10M2207/00; C10M2207/28; C10M2207/2805; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/2835; C10M2207/286; C10M2207/287; C10M2207/2875; C10M2207/288; C10M2207/2885; C10M2207/289; C10M2207/2895; C10M2207/30; C10M2207/301; C10M2207/302; C10M2207/3025; C10M2207/34; C10M2207/345; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/109; C10M2209/11; C10M2211/00; C10M2211/02; C10M2211/0206; C10M2211/022; C10M2211/0225; C10M2211/024; C10M2211/0245; 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: 11
Claim 1
Independent Claim
32 words
A lubricant for hydrofluorocarbon refrigerant comprising as a main component an ester comprised of neopentyl glycol and at least one straight or branched-chain monovalent fatty acid having a carbon number of 3-18.
Claim 2
Dependent Claim
32 words
A lubricant for hydrofluorocarbon refrigerant comprising as a main component an ester comprised of neopentyl glycol and at least one straight or branched-chain monovalent fatty acid having a carbon number of 3-18.
Claim 3
Dependent Claim
38 words
The lubricant according to claim 1, wherein at least one polybasic acid having a carbon number of 4-36 is further esterified in an amount of not more than 80 mol% per total fatty acid with said neopentyl glycol.
Claim 4
Dependent Claim
12 words
The lubricant according to claim 1, wherein said hydrofluorocarbon refrigerant is 1,1,1,2-tetrafluoroethane.
Claim 5
Dependent Claim
53 words
A lubricant for hydrofluorocarbon refrigerant comprising as a main component an ester comprised of at least one of pentaerythriotol, dipentaerythritol and tripentaerythritol represented by the following general formula (I): (in which n is 1, 2 or 3), and at least one straight or branched-chain monovalent fatty acid having a carbon number of 2-18.
Claim 6
Dependent Claim
53 words
A lubricant for hydrofluorocarbon refrigerant comprising as a main component an ester comprised of at least one of pentaerythriotol, dipentaerythritol and tripentaerythritol represented by the following general formula (I): (in which n is 1, 2 or 3), and at least one straight or branched-chain monovalent fatty acid having a carbon number of 2-18.
Claim 7
Dependent Claim
34 words
The lubricant according to claim 4, wherein at least one polybasic acid having a carbon number of 4-36 is further esterified in an amount of not more than 80 mol% per total fatty acid.
Claim 8
Dependent Claim
12 words
The lubricant according to claim 4, wherein said hydrofluorocarbon refrigerant is 1,1,1,2-tetrafluoroethane.
Claim 9
Dependent Claim
77 words
A lubricant for hydrofluorocarbon refrigerant comprising as a main component an ester comprised of a polyvalent alcohol represented by the following general formula (II): (in which R is an alkyl group having a carbon number of not more than 3), at least one straight or branched-chain monovalent fatty acid having a carbon number of 2-18, and not more than 25 mol% per total fatty acid of at least one polybasic acid having a carbon number of 4-36.
Claim 10
Dependent Claim
77 words
A lubricant for hydrofluorocarbon refrigerant comprising as a main component an ester comprised of a polyvalent alcohol represented by the following general formula (II): (in which R is an alkyl group having a carbon number of not more than 3), at least one straight or branched-chain monovalent fatty acid having a carbon number of 2-18, and not more than 25 mol% per total fatty acid of at least one polybasic acid having a carbon number of 4-36.
Claim 11
Dependent Claim
12 words
The lubricant according to claim 7, wherein said hydrofluorocarbon refrigerant is 1,1,1,2-tetrafluoroethane.
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