中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

24 records (took 0.013 seconds)

    High temperature lubricants
    14.
    发明授权
    High temperature lubricants 失效
    高温润滑剂

    公开(公告)号：US3344070A

    公开(公告)日：1967-09-26

    申请号：US35054364

    申请日：1964-03-09

    Applicant: DOW CORNING

    Inventor： SCHIEFER HARRY M ,  WEYENBERG DONALD R

    IPC: C07F7/08 ,  C07F7/10 ,  C07F7/18 ,  C10M169/00

    CPC classification number: C07F7/0818 ,  C07F7/182 ,  C07F7/1844 ,  C10M3/00 ,  C10M2207/281 ,  C10M2207/282 ,  C10M2207/283 ,  C10M2207/286 ,  C10M2207/289 ,  C10M2207/34 ,  C10M2209/103 ,  C10M2215/06 ,  C10M2215/064 ,  C10M2215/065 ,  C10M2219/108 ,  C10M2227/04 ,  C10M2229/02 ,  C10M2229/05 ,  C10N2230/08 ,  C10N2240/08 ,  C10N2240/12 ,  C10N2240/121

    Abstract: A high temperature lubricant comprises a mixture of a high temperature organic lubricating fluid and from 0.1 to 5% by weight of a compound of formula wherein R is an alkyl radical having 1 to 10 carbon atoms, R1 is an alkyl radical having 1 to 10 carbon atoms, or a phenyl or vinyl radical, or hydrogen or a radical OR111, wherein R111 is an alkyl radical having 1 to 4 carbon atoms, R11 is a phenyl or OR111 radical and m is 1, 2 or 3, there being at least one vinyl radical, hydrogen atom or alkoxy radical bonded directly to the silicon atom. The aminophenylsilane constituent may be replaced by a mixture containing 20 to 80% thereof, the balance being a conventional amine antioxidant. Preferred organic lubricating fluids are esters of alkanoic acids containing at least 5 carbon atoms and polyhydric alcohols containing at least two methylol groups bound to a quaternary carbon atom, e.g. 1,2,2-trimethylol propane. Esters of tertiary alkyl carbinols having a methylol radical on a quaternary carbon atom and dicarboxylic acids, e.g. bis-(2,2,4-trimethylpentyl) sebacate, are also suitable. The lubricating fluid may comprise a mixture of the said esters with a silicone lubricating fluid. The preferred conventional amine anti-oxidant is phenyl a -naphthylamine.ALSO:Aminophenylsilanes of the formula wherein R is an alkyl radical having 1 to 10 carbon atoms, R1 is an alkyl radical having 1 to 10 carbon atoms, or a phenyl or vinyl radical or hydrogen or a radical OR111, wherein R111 is an alkyl radical having 1 to 4 carbon atoms, R11 is a phenyl or OR111 radical and m is 1, 2 or 3, are prepared by reacting the appropriate chlorosilane with either the appropriate p-(N,N-dialkylamino) phenylmagnesium halide or a lithium reagent prepared from lithium and a p-halogeno-N,N-dialkylaniline. Reaction takes place by refluxing in, e.g., tetrahydrofuran. Compounds of formula and the particular compound wherein R1 is phenyl are claimed per se. The compounds of the present Specification act as antioxidants in lubricating compositions.

Patent Agency Ranking