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    Lubricating grease composition
    45.
    发明授权
    Lubricating grease composition 失效
    润滑脂组合物

    公开(公告)号：US2394567A

    公开(公告)日：1946-02-12

    申请号：US42327641

    申请日：1941-12-17

    Applicant: STANDARD OIL DEV CO

    Inventor： SPROULE LORNE W ,  ZIMMER JOHN C

    CPC classification number: C10M1/08 ,  C10M2205/026 ,  C10M2205/20 ,  C10M2207/023 ,  C10M2207/025 ,  C10M2207/125 ,  C10M2207/129 ,  C10M2207/16 ,  C10M2211/042 ,  C10M2211/06 ,  C10M2215/062 ,  C10M2219/044 ,  C10N2210/03 ,  C10N2250/10 ,  C10N2270/00

    Abstract: 576,470. Lubricating greases. STANDARD OIL DEVELOPMENT CO. Dec. 16, 1942, No. 17875. Convention date, Dec. 17, 1941. Drawings to Specification. [Class 91] A lubricating grease composition comprises a mixture of a viscous mineral oil, an aluminium soap of a saturated fatty acid of 10 to 20 carbon atoms, and a small proportion of a phenolic compound comprising a monocyclic or polycyclic mono- or di-hydric phenol or an alkylated amino, halogenated or sulphonated derivative thereof. In its preparation, the mixture heated to about 280-300‹F. is rapidly cooled to about 90‹F. and then allowed to stand. The oil is preferably derived from a naphthene base crude and of a viscosity of 50 to 200 S.S.U. at 210‹F. Aluminium stearate is specified. The phenolic compounds may be naturally occurring compounds. General compounds specified comprise cresols, dihydric phenols, amino-phenols, amyl phenols, halogenated and sulphonated derivatives; particular compounds specified are alpha- and #- naphthol and di-isobutyl phenol. The soap is in the proportion of 3 to 20 per cent. by weight of the oil and the phenolic compound in the proportion of 5 to 30 per cent. by weight of the soap present. Other additions may include free unsaturated fatty acids of 10 to 12 carbon atoms and naphthenic acids as well as their aluminium soaps, and thickening agents such as latex or polybutene. In one method of preparation, the mixture is heated in the usual type kettle provided with an agitator having scrapers working on its inner surface and then cooled by passing through a jacketed helical screw conveyor type cooler. In batch operation the mass is re-cycled to the kettle and allowed to cool therein below the transition temperature, without using the agitator, in continuous operation lower temperature is used in the cooler. In a second method of preparation, the ingredients are passed through an orifice mixer and then through a coil heater. The mass is then allowed to stand to permit separation of occluded gases before passing through the cooler.

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