ID16550A - Pelumas yang berdasarkan poliol ester - Google Patents

Pelumas yang berdasarkan poliol ester

Info

Publication number
ID16550A
ID16550A IDP971169A ID971169A ID16550A ID 16550 A ID16550 A ID 16550A ID P971169 A IDP971169 A ID P971169A ID 971169 A ID971169 A ID 971169A ID 16550 A ID16550 A ID 16550A
Authority
ID
Indonesia
Prior art keywords
lubrications
ester polyol
polyol
ester
lubrications based
Prior art date
Application number
IDP971169A
Other languages
English (en)
Inventor
Yoshihiro Shiokawa
Yoshifumi Sato
Kinji Kato
Original Assignee
Mitsubishi Gas Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Gas Chemical Co filed Critical Mitsubishi Gas Chemical Co
Publication of ID16550A publication Critical patent/ID16550A/id

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00Lubricating 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
    • C10M171/008Lubricant compositions compatible with refrigerants
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32Esters
    • C10M105/36Esters of polycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02Materials undergoing a change of physical state when used
    • C09K5/04Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32Esters
    • C10M105/38Esters of polyhydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/22All components of a mixture being fluoro compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/24Only one single fluoro component present
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/281Esters of (cyclo)aliphatic monocarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/282Esters of (cyclo)aliphatic oolycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/283Esters of polyhydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/283Esters of polyhydroxy compounds
    • C10M2207/2835Esters of polyhydroxy compounds used as base material
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/286Esters of polymerised unsaturated acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/022Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/06Perfluorinated compounds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/30Refrigerators lubricants or compressors lubricants
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/32Wires, ropes or cables lubricants
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/34Lubricating-sealants
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/36Release agents or mold release agents
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/38Conveyors or chain belts
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/40Generators or electric motors in oil or gas winning field
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/42Flashing oils or marking oils
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/44Super vacuum or supercritical use
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/50Medical uses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Emergency Medicine (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Lubricants (AREA)
IDP971169A 1996-04-09 1997-04-08 Pelumas yang berdasarkan poliol ester ID16550A (id)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8659696 1996-04-09

Publications (1)

Publication Number Publication Date
ID16550A true ID16550A (id) 1997-10-09

Family

ID=13891394

Family Applications (1)

Application Number Title Priority Date Filing Date
IDP971169A ID16550A (id) 1996-04-09 1997-04-08 Pelumas yang berdasarkan poliol ester

Country Status (8)

Country Link
US (1) US5716916A (id)
EP (1) EP0801129B1 (id)
KR (1) KR970070170A (id)
CN (1) CN1062895C (id)
DE (1) DE69708492T2 (id)
ID (1) ID16550A (id)
SG (1) SG73448A1 (id)
TW (1) TW349119B (id)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6189322B1 (en) * 1998-03-13 2001-02-20 Mitsubishi Denki Kabushiki Kaisha Refrigerant-circulating system, and refrigerant compressor and refrigeration cycle employing the refrigerant compressor
US6278006B1 (en) * 1999-01-19 2001-08-21 Cargill, Incorporated Transesterified oils
US6374629B1 (en) * 1999-01-25 2002-04-23 The Lubrizol Corporation Lubricant refrigerant composition for hydrofluorocarbon (HFC) refrigerants
AU5303399A (en) * 1999-07-05 2001-01-22 Nippon Mitsubishi Oil Corporation Refrigerating machine oil composition
ES2292544T3 (es) * 2000-10-16 2008-03-16 Nof Corporation Preparacion de esteres para uso como material base lubricante.
JP3797144B2 (ja) 2001-06-25 2006-07-12 株式会社村田製作所 弾性表面波装置
AU2006272507B2 (en) * 2005-07-27 2011-08-25 The Lubrizol Corporation High viscosity synthetic ester lubricant base stock blends
US7739968B2 (en) * 2006-07-25 2010-06-22 General Vortex Energy, Inc. System, apparatus and method for combustion of metals and other fuels
US9481852B2 (en) * 2008-01-24 2016-11-01 The Lubrizol Corporation High viscosity synthetic ester lubricant base stock blends
US8402778B2 (en) * 2008-03-31 2013-03-26 National Refrigerants, Inc. Method for enhancing mineral oil miscibility and oil return
US9187682B2 (en) * 2011-06-24 2015-11-17 Emerson Climate Technologies, Inc. Refrigeration compressor lubricant
CN105008501A (zh) * 2013-02-26 2015-10-28 吉坤日矿日石能源株式会社 冷冻机油和冷冻机用工作流体组合物
JP6224965B2 (ja) 2013-09-12 2017-11-01 出光興産株式会社 冷凍機用混合組成物
WO2015125881A1 (ja) 2014-02-20 2015-08-27 旭硝子株式会社 熱サイクルシステム用組成物および熱サイクルシステム
JP6159373B2 (ja) * 2015-10-07 2017-07-05 出光興産株式会社 冷凍機油、冷凍機用組成物、冷凍機及び冷凍機油の選定方法
WO2019194195A1 (ja) 2018-04-02 2019-10-10 Jxtgエネルギー株式会社 冷凍機、冷凍機油及び冷凍機用作動流体組成物

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441600A (en) * 1966-06-16 1969-04-29 Sinclair Research Inc Liquid esters of neoalkyl polyols and neoalkyl fatty acids
US4144183A (en) * 1973-01-22 1979-03-13 Henkel Kommanditgesellschaft Auf Aktien Mixed branched and straight chain ester oils
US4053491A (en) * 1973-01-22 1977-10-11 Henkel Kommanditgesellschaft Auf Aktien Branched-chain aliphatic ester oils
DE3643935C2 (de) * 1986-12-22 1995-07-06 Henkel Kgaa Synthetische Polyolester
US4977793A (en) * 1988-06-17 1990-12-18 Husted Royce Hill Plastic stabilized composite camshaft
ES2034938T5 (es) * 1989-04-25 2009-01-16 The Lubrizol Corporation Composiciones liquidas que contienen esteres carboxilicos.
JP2801703B2 (ja) * 1989-09-01 1998-09-21 花王株式会社 冷凍機油
JPH03217494A (ja) * 1990-01-22 1991-09-25 Kao Corp 冷凍機油
JP3001680B2 (ja) * 1990-07-31 2000-01-24 出光興産株式会社 エステル化合物を含有する潤滑剤または熱媒体液
JP2958383B2 (ja) * 1990-08-07 1999-10-06 日本石油株式会社 合成潤滑油
JP2573111B2 (ja) * 1990-09-12 1997-01-22 花王 株式会社 冷凍機作動流体用組成物
JPH04183789A (ja) * 1990-11-19 1992-06-30 Sanken Kako Kk フロン圧縮機用潤滑油
DE69220392T2 (de) * 1991-01-17 1998-01-29 Cpi Eng Services Inc Schmierzusammensetzung für fluorierte Kühlmittel
JPH0570789A (ja) * 1991-02-26 1993-03-23 Kao Corp 冷凍機作動流体用組成物
JPH04314793A (ja) * 1991-04-12 1992-11-05 Nippon Oil & Fats Co Ltd エステル系の冷凍機油
JP2683170B2 (ja) * 1991-07-09 1997-11-26 株式会社ジャパンエナジー 冷凍機油
JP2958501B2 (ja) * 1991-07-20 1999-10-06 花王株式会社 冷凍機作動流体用組成物
DE4128646A1 (de) * 1991-08-29 1993-03-04 Henkel Kgaa Estermischungen von stark verzweigten carbonsaeuren
JP2976157B2 (ja) * 1992-03-30 1999-11-10 花王株式会社 冷凍機作動流体用組成物
JP2613526B2 (ja) * 1992-07-04 1997-05-28 花王株式会社 冷凍機作動流体用組成物
ZA938322B (en) * 1992-12-17 1994-06-07 Exxon Chemical Patents Inc Refrigeration working fluid compositions containing trifluoroethane
JPH06184575A (ja) * 1992-12-18 1994-07-05 Tonen Corp 冷凍機油
IL108066A0 (en) * 1993-01-07 1994-04-12 Exxon Chemical Patents Inc Refrigeration working fluid compositions containing difluoroethane or pentafluoroethane
US5463095A (en) * 1993-06-15 1995-10-31 Mitsubishi Gas Chemical Company, Inc. Process for the production of esters
WO1995007961A1 (en) * 1993-09-14 1995-03-23 Unichema Chemie B.V. Base fluids
JPH0873876A (ja) * 1994-09-06 1996-03-19 Mitsubishi Gas Chem Co Inc エステル系潤滑油
CN1062593C (zh) * 1995-03-01 2001-02-28 三菱瓦斯化学株式会社 多羟基酯基润滑剂及其生产方法

Also Published As

Publication number Publication date
DE69708492T2 (de) 2003-01-09
KR970070170A (ko) 1997-11-07
DE69708492D1 (de) 2002-01-10
TW349119B (en) 1999-01-01
CN1168409A (zh) 1997-12-24
SG73448A1 (en) 2000-06-20
US5716916A (en) 1998-02-10
EP0801129A2 (en) 1997-10-15
EP0801129A3 (en) 1997-12-29
CN1062895C (zh) 2001-03-07
EP0801129B1 (en) 2001-11-28

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