EP0980416B2 - Polyalkylene glycols comme lubrifiant de machines frigorifiques au co 2 - Google Patents

Polyalkylene glycols comme lubrifiant de machines frigorifiques au co 2 Download PDF

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Publication number
EP0980416B2
EP0980416B2 EP98932037A EP98932037A EP0980416B2 EP 0980416 B2 EP0980416 B2 EP 0980416B2 EP 98932037 A EP98932037 A EP 98932037A EP 98932037 A EP98932037 A EP 98932037A EP 0980416 B2 EP0980416 B2 EP 0980416B2
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Prior art keywords
working composition
polyalkylene glycols
mixtures
composition according
carbon atoms
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EP98932037A
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German (de)
English (en)
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EP0980416A2 (fr
EP0980416B1 (fr
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Jörg Fahl
David F. Pipe
Reiner Knickmeyer
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Shell Internationale Research Maatschappij BV
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Shell Internationale Research Maatschappij BV
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Priority claimed from DE19719132A external-priority patent/DE19719132A1/de
Priority claimed from DE19719430A external-priority patent/DE19719430C1/de
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
    • C10M107/34—Polyoxyalkylenes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/38—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/008—Lubricant compositions compatible with refrigerants
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds used as base material
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/286—Esters of polymerised unsaturated acids
    • C—CHEMISTRY; METALLURGY
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
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    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only used as base material
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only used as base material
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
    • C10M2209/1065—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
    • C10M2209/1075—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106 used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C10M2209/1085—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
    • C10M2209/1095—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified used as base material
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
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    • C10N2040/34—Lubricating-sealants
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    • C10N2040/36—Release agents or mold release agents
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    • C10N2040/38—Conveyors or chain belts
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/40—Generators or electric motors in oil or gas winning field
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    • C10N2040/42—Flashing oils or marking oils
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    • C10N2040/44—Super vacuum or supercritical use
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/50—Medical uses

Definitions

  • the invention relates to operating compositions containing polyalkylene glycol-based lubricants which are suitable for lubricating refrigerators, heat pumps and related equipment, such as air conditioners, which are operated solely with carbon dioxide as a refrigerant.
  • Carbon dioxide has been used as refrigeration equipment at the beginning of modern refrigeration.
  • Linde built the first compression chiller using carbon dioxide as a refrigerant.
  • the lubricant used was glycerin.
  • CFC refrigerants carbon dioxide has barely been used.
  • CFCs fluoro-chloro-hydrocarbons
  • Polypropylene glycols and polyalkylene glycol copolymers containing propylene oxide monomer units have long been known as lubricants.
  • EP 0 844 299 A1 and EP 0 959 121-A1 have earlier priority, but are published after the priority date of the present application, and thus as Article 54 (3) documents, they are to be evaluated only in terms of novelty.
  • carbon dioxide is called. However, it does not disclose the combination of a refrigerant consisting solely of carbon dioxide with polyalkylene glycols containing at least 40% of propylene oxide monomer units.
  • Polyalkylene glycols have already been proposed as lubricants for both processes (see, e.g., Lubricants for Carbon Dioxide, U. Hesse, H.O.Spauschus in Refrigeration Science and Technology, Proceedings, Aarhus Denmark 3-6 Sept. 1996, ISSN 0 151 163).
  • CO 2 behaves very differently with regard to the solubility properties.
  • Subcritical CO 2 is polar, while CO 2 is non-polar in the supercritical region.
  • the polyalkylene glycols according to the invention are soluble in CO 2 over the entire temperature range from the critical temperature T k to below -55 ° C. for higher mass fractions. At lower levels of lubricant, the polyalkylene glycols are no longer or only partially soluble in carbon dioxide.
  • transcritical chillers are made smaller and often have small diameters in the piping systems. This requires sufficient mobility of the lubricant in the corresponding temperature range.
  • the polyalkylene glycols have hydrogen, alkyl, aryl, alkylaryl, aryloxy, alkoxy, alkylaryloxy and / or hydroxyl end groups (c).
  • the alkyl or aryl type end groups preferably have 1 to 8, more preferably 1 to 4, carbon atoms. In the latter case, these are alkyl and / or alkoxy end groups.
  • polyalkylene glycols according to the invention particularly good results in terms of high density and good lubricating properties on the one hand and the properties listed above are achieved if the polyalkylene glycol as the main component, namely at least 60%, propylene oxide units (monomer units of type (a)).
  • the polyalkylene glycols according to the invention are thus either homopolymers, namely polypropylene glycol (or polypropylene oxide), or copolymers, terpolymers, etc., furthermore containing monomer units of type (b).
  • the monomer units may have a statistical distribution or a block structure.
  • the monomer units of type (b) are at least 5% in the polymer chain.
  • the monomer units of type (b) are preferably ethylene oxide and / or butylene oxide units.
  • the polyalkylene glycols of the invention can be prepared by reacting alcohols, including the polyhydric alcohols, as initiator compounds with alkylene oxides such as ethylene oxide, propylene oxide and / or butylene oxide. After the reaction, these have only one free hydroxy group as end group. Polyalkylene glycols having only one hydroxy group are preferred over those having two free hydroxy groups.
  • hygroscopicity and compatibility are polyalkylene glycols, e.g. after a further etherification step no more free hydroxy groups.
  • polyalkylene glycols which have average molecular weights of from 400 to 3000 g / mol, more preferably from 1000 to 2000 g / mol.
  • the polyalkylene glycols according to the invention are characterized by densities of more than 940 kg / m 3 , and preferably even more than 1000 kg / m 3 , and moreover surprisingly also possess the abovementioned properties which are required for use as refrigerating machine oil in combination with carbon dioxide as the refrigerant are.
  • Polyalkylene glycols with a density of more than 940 kg / m 3 are particularly suitable under these conditions. However, practical tests have shown that those with higher densities, above about 1000 kg / m 3 worked even better. This can be explained by a faster settling of the polyalkylene glycols according to the invention, when complete solubility in the carbon dioxide refrigerant is no longer present.
  • additives such as wear improvers, anti-foaming agents, antioxidants, such as alkylated phenolic antioxidants, e.g. in particular Irganox® L101, viscosity index improvers, corrosion inhibitors or high-pressure additives, in particular phosphate esters.
  • esters or ester mixtures which, according to (1) (a), based on the total carboxylic acid group concentration, consist of at least 60 mol% of n-pentanoic acid, are also preferred; the acid component of (1) (b) consists predominantly of branched monocarboxylic acids, more preferably of 5 to 40 mol% of branched monocarboxylic acids, based on the total carboxylic acid group concentration.
  • the acid components remaining for the complete esterification of all hydroxy groups consist of linear C5 to C10 monocarboxylic acids.
  • all hydroxy groups of the alcohol component are completely esterified.
  • the neopentyl glycol esters according to the invention preferably have densities above 940 kg / m 3 , in general even more than 1000 kg / m 3 .
  • the polyalkylene glycols according to the invention can be used together with neopentyl polyol esters as lubricants, which predominantly, i. to greater than 90%, preferably to about 100%, branched C5 to C10 acid groups, particularly preferably branched C8 to C10 acid groups.
  • neopentyl polyol esters for the definition of the preferred alcohol groups of these neopentyl polyol esters, reference is made to the paragraph above.
  • the proportion of the polyalkylene glycols of the invention is preferably at least 20% by weight, more preferably at least 40% by weight, based on the amount of lubricant (i.e., the lubricants without refrigerants and additives) in the resource composition.
  • the proportion of neopentylpolyol ester lubricant is preferably from 20 to 60% by weight, particularly preferably from 40 to 60% by weight, based in each case on the lubricant proportion in the equipment composition.
  • Tests have proven the effectiveness of the polyalkylene glycols according to the invention as lubricants in CO 2 refrigeration machines.
  • the viscosity / vapor pressure temperature behavior of a mixture of carbon dioxide and the polyalkylene glycol Triton GL-220® from DEA Mineraloel AG can be taken.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Claims (15)

  1. Composition de consommables pour machines frigorifiques contenant en tant qu'agent frigorifique des dioxydes de carbone et de polyalkylène-glycol respectivement leurs mélanges, les polyalkylène-glycols se composant par rapport à la chaîne de polymères
    (a) d'au moins 40 % de préférence au moins 60 % d'unités monomères issues des unités monomères du type (-CH(CH3)-CH2-O) et ou (-CH2-CH(CH3)-O-) et
    (b) d'un reste d'unités monomères du type (-R-O-), R étant un groupe d'alkyl saturé, linéaire ou ramifié, avec 2 à 6 atomes de carbone, et porte le cas échéant 1 à 2 autres groupes oxy (-O-) et pouvant être différent pour chaque unité monomère,
    (c) présente des groupes terminaux qui sont
    (i) des groupes terminaux d'hydrogène et/ou d'hydroxy et/ou
    (ii) d'alkyl, d'aryl, d'alkylaryl, d'aryloxy, d'alkoxy et/ou d'alkylaryloxy,
    l'agent frigorifique se composant essentiellement de dioxyde de carbone,
  2. Composition de consommables selon la revendication 1, caractérisée en ce que la composition de consommables contient des polyalkylène-glycols respectivement leurs mélanges,
    (c) qui comportent des groupes terminaux qui
    (i) sont des groupes terminaux d'hydrogène et/ou d'hydroxy et/ou
    (ii) d'alkyl, d'aryl, d'alkylaryl, d'aryloxy, d'alkoxy et/ou d'alkylaryloxy avec 1 à 8, de préférence 1 ou 4 atomes de carbone.
  3. Composition de consommables selon l'une des revendications précédentes, caractérisée en ce que la composition de consommables contient des polyalkylène-glycols respectivement leurs mélanges, dont les unités de monomère du type (b) représentent au moins 5 % des unités de monomère de la molécule.
  4. Composition de consommables selon l'une des revendications précédentes, caractérisée en ce que la composition de consommables contient des polyalkylène-glycols respectivement leurs mélanges, dont les unités de monomère du type (b) sont des unités d'oxyde d'éthylène et/ou d'oxyde de butylène respectivement ont été fabriquées à partir de ces dernières.
  5. Composition de consommables selon l'une des revendications précédentes, caractérisée en ce que la composition de consommables contient des polyalkylène-glycols respectivement leurs mélanges, qui ne présentent par molécule qu'un groupe libre d'hydroxy.
  6. Composition de consommables selon l'une des revendications 1 à 4, caractérisée en ce que la composition de consommables contient des polyalkylène-glycols respectivement leurs mélanges, qui ne présentent aucun groupe libre d'hydroxy.
  7. Composition de consommables selon l'une des revendications précédentes, caractérisée en ce que la composition de consommables contient des polyalkylène-glycols respectivement leurs mélanges, qui présentent un poids moléculaire moyen de 400 à 3000 g/mol, particulièrement préféré de 1000 à 2000 g/mol.
  8. Composition de consommables selon l'une des revendications précédentes, caractérisée en ce que la composition de consommables contient en outre des esters ou des mélanges d'ester, les esters étant des neopentyl polyol esters.
  9. Composition de consommables selon la revendication 8, caractérisée en ce que les neopentyl polyol esters se composent
    (1) d'un composant d'acide, les composants d'acide,
    (a) par rapport à la concentration totale du groupe d'acide carbonique, se composant d'au moins 40 % en poids molaire d'acide de pentane et
    (b) pour le reste d'acides de monocarbone C6 à C10 linéaires ou ramifiés et/ou d'acides de monocarbone ramifiés C5 et
    (2) d'un composant d'alcool avec 4 à 8 groupes d'hydroxy, d'un, deux ou de trois atomes de carbone quaternaires, de 5 à 21 atomes de carbones et de 0 à 4 liaisons d'éther.
  10. Composition de consommables selon la revendication 8, caractérisée en ce que les neopentyl polyol esters se composent
    (1) d'un composant d'acide C5 à C10, les composants d'acide, par rapport à la concentration totale du groupe d'acide carbonique, se composant d'au moins 90 % en poids molaire d'acide de carbone ramifié et
    (2) d'un composant d'alcool avec 4 à 8 groupes d'hydroxy, d'un, de deux ou de trois atomes de carbone quaternaires, de 5 à 21 atomes de carbone et de 0 à 4 liaisons d'éther.
  11. Composition de consommables selon l'une des revendications précédentes, caractérisée en ce que la composition de consommables contient des polyalkylène-glycols ou des mélanges de polyalkylène-glycol/ester, respectivement selon l'une des revendications précédentes, qui présente une densité supérieure à 940 kg/m3, de préférence supérieure à 1000 kg/m3.
  12. Composition de consommables selon l'one des revendications précédentes, caractérisée en ce que la composition de consommables contient en tant que lubrifiant des polyalkylène-glycols selon l'une des revendications 1 à 7, ou des mélanges de polyalkylène-glycol/ester, selon l'une des revendications 8 à 11.
  13. Utilisation des polyalkylène-glycols ou des polyalkylène-glycols selon l'une des revendications précédentes comme lubrifiant dans des machines frigorifiques qui fonctionnent au dioxyde de carbone, l'agent frigorifique étant constitué exclusivement de dioxyde de carbone.
  14. Utilisation selon la revendication 13, caractérisée en ce que le consommable est amené dans un cycle transcritique.
  15. Utilisation selon la revendication 13, caractérisée en ce que le consommable est amené exclusivement dans un cycle subcritique.
EP98932037A 1997-05-07 1998-04-29 Polyalkylene glycols comme lubrifiant de machines frigorifiques au co 2 Expired - Lifetime EP0980416B2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19719132 1997-05-07
DE19719132A DE19719132A1 (de) 1997-05-07 1997-05-07 Polyol-Ester als Schmiermittel für CO¶2¶-Kältemaschinen
DE19719430A DE19719430C1 (de) 1997-05-12 1997-05-12 Polyalkylenglykole als Schmiermittel für CO¶2¶-Kältemaschinen
DE19719430 1997-05-12
PCT/DE1998/001196 WO1998050499A2 (fr) 1997-05-07 1998-04-29 Polyalkylene glycols comme lubrifiant de machines frigorifiques au co¿2?

Publications (3)

Publication Number Publication Date
EP0980416A2 EP0980416A2 (fr) 2000-02-23
EP0980416B1 EP0980416B1 (fr) 2003-07-09
EP0980416B2 true EP0980416B2 (fr) 2009-06-10

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Application Number Title Priority Date Filing Date
EP98932037A Expired - Lifetime EP0980416B2 (fr) 1997-05-07 1998-04-29 Polyalkylene glycols comme lubrifiant de machines frigorifiques au co 2

Country Status (6)

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EP (1) EP0980416B2 (fr)
AR (1) AR012666A1 (fr)
AU (1) AU8208998A (fr)
DE (2) DE19880588D2 (fr)
DK (1) DK0980416T4 (fr)
WO (1) WO1998050499A2 (fr)

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TW546371B (en) * 1998-12-11 2003-08-11 Idemitsu Kosan Co Refrigerator oil composition, and method of using the composition for lubrication
TW574368B (en) * 1999-06-21 2004-02-01 Idemitsu Kosan Co Refrigerator oil for carbon dioxide refrigerant
JP2001073945A (ja) * 1999-08-31 2001-03-21 Sanyo Electric Co Ltd 密閉型電動圧縮機
EP1243639B1 (fr) * 1999-12-28 2009-08-12 Idemitsu Kosan Co., Ltd. L'utilisation d'une composition lubrifiante pour refrigerant a base de dioxyde de carbone utilisee dans une machine frigorifique
MY125381A (en) * 2000-03-10 2006-07-31 Sanyo Electric Co Refrigerating device utilizing carbon dioxide as a refrigerant.
JP2002194368A (ja) 2000-10-17 2002-07-10 Nippon Mitsubishi Oil Corp 冷凍機油
DE10209987A1 (de) * 2002-03-07 2003-09-25 Clariant Gmbh Thermisch stabile Polyalkylenglykole als Schmiermittel für Kältemaschinen
WO2006068664A2 (fr) 2004-07-13 2006-06-29 Tiax Llc Systeme et procede de refrigeration
WO2009055009A2 (fr) 2007-10-24 2009-04-30 Emerson Climate Technologies, Inc. Compresseur à spirale pour réfrigérant à dioxyde de carbone
JP5779668B2 (ja) * 2014-01-07 2015-09-16 Ｊｘ日鉱日石エネルギー株式会社 二酸化炭素冷媒用冷凍機油及び冷凍機用流体組成物

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EP0384724A1 (fr) † 1989-02-22 1990-08-29 Nippon Oil Co. Ltd. Procédé de lubrification d'appareils réfrigérants
WO1997003153A1 (fr) † 1995-07-10 1997-01-30 Idemitsu Kosan Co., Ltd. Huile pour refrigerateur et procede de lubrification y faisant appel
WO1997007182A1 (fr) † 1995-08-18 1997-02-27 Imperial Chemical Industries Plc Compositions refrigerantes
JPH1046169A (ja) † 1996-08-06 1998-02-17 Idemitsu Kosan Co Ltd 冷凍機用潤滑油組成物
WO1998008912A1 (fr) † 1996-08-30 1998-03-05 Imperial Chemical Industries Plc Compositions refrigerantes

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EP0384724A1 (fr) † 1989-02-22 1990-08-29 Nippon Oil Co. Ltd. Procédé de lubrification d'appareils réfrigérants
WO1997003153A1 (fr) † 1995-07-10 1997-01-30 Idemitsu Kosan Co., Ltd. Huile pour refrigerateur et procede de lubrification y faisant appel
WO1997007182A1 (fr) † 1995-08-18 1997-02-27 Imperial Chemical Industries Plc Compositions refrigerantes
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Also Published As

Publication number Publication date
EP0980416A2 (fr) 2000-02-23
DK0980416T3 (da) 2003-10-20
DE59808991D1 (de) 2003-08-14
AR012666A1 (es) 2000-11-08
EP0980416B1 (fr) 2003-07-09
AU8208998A (en) 1998-11-27
DK0980416T4 (da) 2009-10-12
WO1998050499A2 (fr) 1998-11-12
DE19880588D2 (de) 2000-04-13
WO1998050499A3 (fr) 1999-02-04

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