EP0102088A3 - Methylpolysiloxane hydraulic fluids - Google Patents

Methylpolysiloxane hydraulic fluids Download PDF

Info

Publication number
EP0102088A3
EP0102088A3 EP83108576A EP83108576A EP0102088A3 EP 0102088 A3 EP0102088 A3 EP 0102088A3 EP 83108576 A EP83108576 A EP 83108576A EP 83108576 A EP83108576 A EP 83108576A EP 0102088 A3 EP0102088 A3 EP 0102088A3
Authority
EP
European Patent Office
Prior art keywords
methylpolysiloxane
units
hydraulic fluid
hydraulic fluids
ch3sio
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP83108576A
Other languages
German (de)
French (fr)
Other versions
EP0102088A2 (en
Inventor
Takeshi Imai
Minoru Nishio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DuPont Toray Specialty Materials KK
Original Assignee
Toray Silicone Co Ltd
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 Toray Silicone Co Ltd filed Critical Toray Silicone Co Ltd
Publication of EP0102088A2 publication Critical patent/EP0102088A2/en
Publication of EP0102088A3 publication Critical patent/EP0102088A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C10M107/50—Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
    • 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silicon Polymers (AREA)

Abstract

A methylpolysiloxane oil containing CH₃SiO3/2, (CH₃)₂SiO, and/or (CH₃)₃SiO1/2 units and having a specific gravity of 1.02 or greater has been found useful as an hydraulic fluid. The specific gravity of the hydraulic fluid allows for any water introduced into the system to collect as an upper layer above the hydraulic fluid where it can be removed easily. A particularly preferred methylpolysiloxane hydraulic fluid contains 0 to 10 mol percent (CH₃)₃SiO1/2 units, 45-80 mol percent (CH₃)₂SiO units, and 20-45 CH₃SiO3/2 units with a 1.65 to 1.80 CH₂/Si ratio.
EP83108576A 1982-08-31 1983-08-31 Methylpolysiloxane hydraulic fluids Withdrawn EP0102088A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57151547A JPS5941394A (en) 1982-08-31 1982-08-31 Hydraulic fluid
JP151547/82 1982-08-31

Publications (2)

Publication Number Publication Date
EP0102088A2 EP0102088A2 (en) 1984-03-07
EP0102088A3 true EP0102088A3 (en) 1985-09-25

Family

ID=15520895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108576A Withdrawn EP0102088A3 (en) 1982-08-31 1983-08-31 Methylpolysiloxane hydraulic fluids

Country Status (2)

Country Link
EP (1) EP0102088A3 (en)
JP (1) JPS5941394A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577523A (en) * 1983-11-28 1986-03-25 Dow Corning Corporation Silicone traction fluids
DE3860638D1 (en) * 1987-04-13 1990-10-25 Toshiba Silicone LUBRICANT COMPOSITION AND HYDRAULIC LIQUID.
US6623399B2 (en) * 2001-12-28 2003-09-23 Dow Corning Corporation Traction fluids
US6602830B1 (en) 2001-12-28 2003-08-05 Dow Corning Corporation Tractions fluids having excellent low temperature properties

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2086922A (en) * 1980-10-21 1982-05-19 Wacker Chemie Gmbh Silicone hydraulic fluids
JPS57205496A (en) * 1981-06-12 1982-12-16 Toray Silicone Co Ltd Silicone working fluid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2086922A (en) * 1980-10-21 1982-05-19 Wacker Chemie Gmbh Silicone hydraulic fluids
JPS57205496A (en) * 1981-06-12 1982-12-16 Toray Silicone Co Ltd Silicone working fluid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 7, no. 56(C-155)(1201), 8th March 1983; & JP - A - 57 205 496 (TORAY SILICONE K.K.) 16-12-1982 *

Also Published As

Publication number Publication date
JPS5941394A (en) 1984-03-07
EP0102088A2 (en) 1984-03-07

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB

PUAL Search report despatched

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19860526

RIN1 Information on inventor provided before grant (corrected)

Inventor name: IMAI, TAKESHI

Inventor name: NISHIO, MINORU