EP0452816A2
Expired / Lapsed
EP
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Use of synthetic lubricating oils in refrigerators
Assignee: Eneos Corp
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Filing: 1991-04-11
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Granted: —
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Expires: 2011-04-11
Abstract
Abstract A synthetic lubricating oil comprising as a base oil at least one kind of a carbonic acid ester selected from the group consisting of: [I] a carbonic acid ester represented by the general formula (1) wherein R¹ and R² are each an alkyl or dihydric alcohol residue, R³ is an alkylene, and a is 0 - 30, [II] a carbonic acid ester represented by the general formula (2) wherein X¹ is -H or R⁴-R⁶ are each an alkyl, cycloalkyl or neopentyl type polyol residue, R⁷ is an alkyl, b is 1 or 2, c is 0 or 1 (b + c = 2), d is 0 - 30, and e is 1 - 3, and [III] a carbonic acid ester of which alcohol moieties are (A) a monohydric alcohol, (B) a dihydric alcohol, and (C) a neopentyl type polyol or dimer or trimer thereof.
Inventors
- 👤 Noboru C/O Nippon Oil Co. Ltd. Ishida
- 👤 Hiroshi C/O Nippon Oil Co. Ltd. Hasegawa
- 👤 Umekichi C/O Nippon Oil Co. Ltd. Sasaki
- 👤 Tatsuyuki C/O Nippon Oil Co. Ltd. Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 00:55
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/008; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C10M105/00; C10M105/08; C10M105/32; C10M105/38; C10M105/42; C10M105/48; C10M107/00; C10M107/20; C10M107/30; C10M107/32; C10M107/34; C10M111/00; C10M111/04; C10M129/00; C10M129/02; C10M129/16; C10M129/18; C10M129/26; C10M129/28; C10M129/38; C10M129/40; C10M129/42; C10M129/66; C10M129/68; C10M129/70; C10M137/00; C10M137/02; C10M137/04; C10M137/08; C10M169/00; C10M169/04; C09K2205/00; C09K2205/24; C10M2201/00; C10M2201/06; C10M2201/061; C10M2201/065; C10M2201/066; C10M2201/16; C10M2201/18; C10M2203/00; C10M2203/06; C10M2203/10; C10M2203/102; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/028; C10M2205/04; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/027; C10M2207/028; C10M2207/04; C10M2207/042; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/126; C10M2207/127; C10M2207/129; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/22; C10M2207/24; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/2805; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/2835; C10M2207/284; C10M2207/285; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/30; C10M2207/301; C10M2207/302; C10M2207/304; C10M2207/32; C10M2207/325; C10M2207/34; C10M2207/345; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/1003; 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; C10M2211/02; C10M2211/022; C10M2211/04; C10M2211/042; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/04; C10M2213/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/043; C10M2223/045; C10M2223/047; C10M2223/06; C10M2223/065; C10M2227/00; C10M2227/06; C10M2227/061; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/12; C10N2040/00; 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
306 words
A synthetic lubricating oil comprising as a base oil at least one kind of a carbonic acid ester selected from the group consisting of: [I] a carbonic acid ester represented by the general formula (1) wherein R¹ and R² may be identical with, or different from, each other and are each a group selected from the group consisting of alkyl groups having 1 - 15 carbon atoms and dihydric alcohol residues having 2 - 12 carbon atoms, R³ is an alkylene group having 2 - 12 carbon atoms, and a is an integer of 0 - 30; [II] a carbonic acid ester represented by the general formula (2) wherein X¹ is a hydrogen atom or a group represented by the general formula R⁴, R⁵ and R⁶ may be identical with, or different from, one another and are each a group selected from the group consisting of alkyl groups having 1 - 12 carbon atoms, cycloalkyl groups having 5 - 12 carbon atoms and neopentyl type polyol residues having 5 - 30 carbon atoms and 3 - 8 hydroxyl groups; R⁷ is an alkyl group having 1 - 6 carbon atoms; b is an integer of 1 or 2, c is an integer of 0 or 1 with the priviso that the sum of b and c equals to 2; d is an integer of 0 - 30, at least one of R⁴ and R⁵ indicating a neopentyl type polyol residue when d is 0; and e is an integer of 1 - 3; and [III] a carbonic acid ester prepared from a source of carbonic acid moieties and the following alcoholic components: (A) a monohydric alcohol, (B) a dihydric alcohol, and (C) a neopentyl type polyol having 5 - 7 carbon atoms and 3 - 4 hydroxyl groups, or a dimer or trimer of the polyol.
Claim 2
Dependent Claim
37 words
A synthetic lubricating oil according to claim 1, wherein the alcoholic component (C) of the carbonic acid ester [III] is at least one member selected from the group consisting of trimethylolpropane, di-(trimethylolpropane), tri-(trimethylolpropane), pentaerythritol, di-(pentaerythritol) and tri-(pentaerythritol).
Claim 3
Dependent Claim
21 words
A synthetic lubricating oil according to claim 1, wherein the synthetic lubricating oil is used as a lubricating oil for refrigerators.
Claim 4
Dependent Claim
21 words
A synthetic lubricating oil according to claim 2, wherein the synthetic lubricating oil is used as a lubricating oil for refrigerators.
Claim 5
Dependent Claim
22 words
A synthetic lubricating oil according to claim 3, wherein a halogenocarbon used as a refrigerant in the refrigerators is a hydrogen-containing one.
Claim 6
Dependent Claim
22 words
A synthetic lubricating oil according to claim 4, wherein a halogenocarbon used as a refrigerant in the refrigerators is a hydrogen-containing one.
Claim 7
Dependent Claim
445 words
A synthetic lubricating oil according to claim 1, wherein the base oil is a mixture of: (i) at least one kind of a carbonic acid ester selected from the group consisting of the carbonic acid esters [I] - [III]; and (ii) at least one kind of an oil selected from the group consisting of (a) a polyoxyalkylene glycol or an ether thereof represented by the general formula (3) R⁸ (̵ OR¹⁰ )̵ f OR⁹ (3) wherein R⁸ and R⁹ are each a hydrogen atom or an alkyl group having 1-18 carbon atoms, R¹⁰ is an alkylene group having 2-4 carbon atoms, and f is an integer of 5-70, (b) a polyoxyalkylene glycol glycerol ether represented by the general formula (4) wherein R¹¹-R¹³ are each a hydrogen atom or an alkyl group having 1-18 carbon atoms, R¹⁴-R¹⁶ are each an alkylene group having 2-4 carbon atoms, and g-i are each an integer of 5-7, (c) an ester represented by the general formula (5) wherein X² is a group represented by the general formula -OR¹⁹ or X³ is a group represented by the general formula R¹⁷ and R²³ are each an alkylene group having 1-8 carbon atoms, R¹⁸ and R²⁰ are each an alkylene group having 2-16 carbon atoms, R¹⁹ and R²⁴ are each an alkyl group having 1-15 carbon atoms, R²¹ and R²² are each an alkyl group having 1-14 carbon atoms, j and k are each an integer of 0 or 1 and ℓ is an integer of 0-30, (d) a polyol ester represented by the general formula (6) wherein X⁴ is a group selected from the group consisting of methyl group, ethyl group, propyl group and groups represented by the general formula R²⁵-R²⁸ may be identical with, or different from, each other and are each a group selected from the group consisting of straight-chain alkyl groups having 3-11 carbon atoms, branched-chain alkyl groups having 3-15 carbon atoms and cycloalkyl groups having 6-12 carbon atoms, the straight-chain alkyl groups being present in a ratio of not more than 60 % of the total alkyl groups, and m is an integer of 1-3, and (e) a polyol dicarboxylic acid ester represented by the general formula (7) wherein X⁵ and X⁶ may be identical with, or different from, each other and are each a group selected from the group consisting of methyl group, ethyl group, propyl group and groups represented by the general formula R²⁹-R³³ may be identical with, or different from each other and are each an alkyl group having 3 - 15 carbon atoms, R³⁴ is a divalent hydrocarbon group having 1 - 8 carbon atoms, and n is an integer of 1 - 5.
Claim 8
Dependent Claim
446 words
A synthetic lubricating oil according to claim 3, wherein the base oil is a mixture of: (i) at least one kind of a carbonic acid ester selected from the group consisting of the carbonic acid esters [I] - [III]; and (ii) at least one kind of an oil selected from the group consisting of (a) a polyoxyalkylene glycol or an ether thereof represented by the general formula (3) R⁸ (̵ OR¹° )̵ f OR⁹ (3) wherein R⁸ and R⁹ are each a hydrogen atom or an alkyl group having 1-18 carbon atoms, R¹⁰ is an alkylene group having 2-4 carbon atoms, and f is an integer of 5-70, (b) a polyoxyalkylene glycol glycerol ether represented by the general formula (4) wherein R¹¹-R¹³ are each a hydrogen atom or an alkyl group having 1-18 carbon atoms, R¹⁴-R¹⁶ are each an alkylene group having 2-4 carbon atoms, and g-i are each an integer of 5-7, (c) an ester represented by the general formula (5) wherein X² is a group represented by the general formula -OR¹⁹ or X³ is a group represented by the general formula or R¹⁷ and R²³ are each an alkylene group having 1-8 carbon atoms, R¹⁸ and R²⁰ are each an alkylene group having 2-16 carbon atoms, R¹⁹ and R²⁴ are each an alkyl group having 1-15 carbon atoms, R²¹ and R²² are each an alkyl group having 1-14 carbon atoms, j and k are each an integer of 0 or 1 and ℓ is an integer of 0-30, (d) a polyol ester represented by the general formula (6) wherein X⁴ is a group selected from the group consisting of methyl group, ethyl group, propyl group and groups represented by the general formula R²⁵-R²⁸ may be identical with, or different from, each other and are each a group selected from the group consisting of straight-chain alkyl groups having 3-11 carbon atoms, branched-chain alkyl groups having 3-15 carbon atoms and cycloalkyl groups having 6-12 carbon atoms, the straight-chain alkyl groups being present in a ratio of not more than 60 % of the total alkyl groups, and m is an integer of 1-3, and (e) a polyol dicarboxylic acid ester represented by the general formula (7) wherein X⁵ and X⁶ may be identical with, or different from, each other and are each a group selected from the group consisting of methyl group, ethyl group, propyl group and groups represented by the general formula R²⁹-R³³ may be identical with, or different from each other and are each an alkyl group having 3 - 15 carbon atoms, R³⁴ is a divalent hydrocarbon group having 1 - 8 carbon atoms, and n is an integer of 1 - 5.
Claim 9
Dependent Claim
40 words
A synthetic lubricating oil according to claim 7, wherein the at least one kind of carbonic acid ester (i) is comprised in an amount of more than 50% by weight based on the total amount of the synthetic lubricating oil.
Claim 10
Dependent Claim
40 words
A synthetic lubricating oil according to claim 8, wherein the at least one kind of carbonic acid ester (i) is comprised in an amount of more than 50% by weight based on the total amount of the synthetic lubricating oil.
Claim 11
Dependent Claim
59 words
A synthetic lubricating oil according to claim 1, further comprising at least one kind of a phosphorus compound selected from the group consisting of phosphoric esters, acid phosphoric esters, amine salts of acid phosphoric esters, chlorinated phosphoric esters and phosphorous esters, in an amount of 0.1-5.0 % by weight based on the total amount of the synthetic lubricating oil.
Claim 12
Dependent Claim
59 words
A synthetic lubricating oil according to claim 3, further comprising at least one kind of a phosphorus compound selected from the group consisting of phosphoric esters, acid phosphoric esters, amine salts of acid phosphoric esters, chlorinated phosphoric esters and phosphorous esters, in an amount of 0.1-5.0 % by weight based on the total amount of the synthetic lubricating oil.
Claim 13
Dependent Claim
60 words
A synthetic lubricating oil according to claim 1, further comprising at least one kind of an epoxy compound selected from the group consisting of phenylglycidyl ether type epoxy compounds, glycidyl ester type epoxy compounds, epoxidized fatty acid monoesters and epoxidized vegetable oils, in an amount of 0.1-5.0 % by weight based on the total amount of the synthetic lubricating oil.
Claim 14
Dependent Claim
60 words
A synthetic lubricating oil according to claim 3, further comprising at least one kind of an epoxy compound selected from the group consisting of phenylglycidyl ether type epoxy compounds, glycidyl ester type epoxy compounds, epoxidized fatty acid monoesters and epoxidized vegetable oils, in an amount of 0.1-5.0 % by weight based on the total amount of the synthetic lubricating oil.
Claim 15
Dependent Claim
72 words
A synthetic lubricating oil according to claim 1, further comprising a carboxylic acid represented by the general formula (8) R³⁵-CH(COOH)₂ (8) and/or the general formula (9) R³⁶-CH₂-COOH (9) wherein R³⁵ and R³⁶ may be identical with, or different from, each other and are each an alkyl group having 8 - 18 carbon atoms, in an amount of 0.01 - 3% by weight based on the total amount of the synthetic lubricating oil.
Claim 16
Dependent Claim
72 words
A synthetic lubricating oil according to claim 3, further comprising a carboxylic acid represented by the general formula (8) R³⁵-CH(COOH)₂ (8) and/or the general formula (9) R³⁶-CH₂-COOH (9) wherein R³⁵ and R³⁶ may be identical with, or different from, each other and are each an alkyl group having 8 - 18 carbon atoms, in an amount of 0.01 - 3% by weight based on the total amount of the synthetic lubricating oil.
References Cited (Backward Citations)
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