Title: Hydraulic fluid containing tertiary butyl ethers

Abstract: Brake fluids and operating fluids for central hydraulic installations in motor vehicles having an excellent temperature / viscosity behavior and good lubricating properties are obtained by the admixture to conventional polyethylene glycol alkyl ether-based fluids of alkyl polyethylene glycol-t-butyl ethers of the formula ##STR1## in which R is a straight or branched chain alkyl radical having from 1 to 4 carbon atoms and n is an integer of from 2 to 10, preferably from 2 to 5. Mixture of the ethers may be employed.

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Inventors: Knoblauch, Wolfgang (Salzach, DT)
Mucke, Rainer (Alz, DT)
Salvador, Rene (Altotting, DT)

Application Number: 727460
Filing Date: 1976-09-28
Publication_date: 1978-05-09
Assignee: Hoechst Aktiengesellschaft (Frankfurt am Main, DT); Alfred Teves GmbH (Frankfurt am Main, DT)
Primary Class(es): 252/73
Other Classes:
US Patent Ref:

2520611	Aug, 1950	Roberts et al.	252/73.
2520612	Aug, 1950	Roberts et al.	252/73.
2687377	Aug, 1954	Stewart et al.	252/77.
2801968	Aug, 1957	Forby et al.	252/32.
2839468	Jun, 1958	Stewart et al.	252/32.
3629111	Dec, 1971	Cramer	252/75.
3779930	Dec, 1973	Alcorn et al.	252/77.

Other Refs: 687307850990

May, 1964	CA
Oct, 1960	UK

Primary Examiner: Pitlick, Harris A.
Assistant Examiner:
Attorney: Connolly and Hutz