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    Improvements in suspensions for lubrication and other purposes
    3.
    发明专利
    Improvements in suspensions for lubrication and other purposes 未知

    公开(公告)号：GB449592A

    公开(公告)日：1936-06-30

    申请号：GB2197835

    申请日：1935-08-02

    Applicant: SULFLO CORP OF AMERICA

    IPC: C10M173/02

    Abstract: A freely flowing gelatinous suspension comprises a liquid pretroleum &c. hydrocarbon in which a predetermined amount of carnauba wax, gelled with the same kind of oil, is dispersed to form a mobile discontinuous mass. The suspension forms a vehicle for stably suspending lubricating &c. particles, e.g. graphite, talc, sulphur, lead. The carnauba wax is dissolved by heating and a gel is formed by cooling, with or without agitation, after which the gel is broken into small particles by agitation, e.g. by stirring or by passing the mixture through an orifice. A stable suspension is obtained by using sufficient wax to avoid formation of serum layer, on standing, or by decanting such serum layer. A plasticizer in the nature of a wax solvent may be added. In an example carnauba wax is dissolved in 1\ba1/2\be times its weight of petroleum oil by heat and the wax content is reduced to 9 per cent by adding further oil and stirring, after which 5 per cent flowers of sulphur is added and the mixture freed through an orifice to yield a lubricant intended to be diluted with further oil for use. Other examples are given involving smaller amounts of wax. Specification 428,463 is referred to.

    6.
    发明专利
    未知

    公开(公告)号：FR793603A

    公开(公告)日：1936-01-28

    申请号：FR793603D

    申请日：1935-08-09

    Applicant: SULFLO CORP OF AMERICA

    IPC: C10M173/02

    Abstract: A freely flowing gelatinous suspension comprises a liquid pretroleum &c. hydrocarbon in which a predetermined amount of carnauba wax, gelled with the same kind of oil, is dispersed to form a mobile discontinuous mass. The suspension forms a vehicle for stably suspending lubricating &c. particles, e.g. graphite, talc, sulphur, lead. The carnauba wax is dissolved by heating and a gel is formed by cooling, with or without agitation, after which the gel is broken into small particles by agitation, e.g. by stirring or by passing the mixture through an orifice. A stable suspension is obtained by using sufficient wax to avoid formation of serum layer, on standing, or by decanting such serum layer. A plasticizer in the nature of a wax solvent may be added. In an example carnauba wax is dissolved in 1\ba1/2\be times its weight of petroleum oil by heat and the wax content is reduced to 9 per cent by adding further oil and stirring, after which 5 per cent flowers of sulphur is added and the mixture freed through an orifice to yield a lubricant intended to be diluted with further oil for use. Other examples are given involving smaller amounts of wax. Specification 428,463 is referred to.

    7.
    发明专利
    未知

    公开(公告)号：FR763725A

    公开(公告)日：1934-05-05

    申请号：FR763725D

    申请日：1933-11-13

    Applicant: SULFLO CORP OF AMERICA

    Improvements in high-pressure and high temperature lubricants and methods of lubrication
    9.
    发明专利
    Improvements in high-pressure and high temperature lubricants and methods of lubrication 未知

    公开(公告)号：GB465510A

    公开(公告)日：1937-05-07

    申请号：GB2197735

    申请日：1935-08-02

    Applicant: SULFLO CORP OF AMERICA

    IPC: F16N17/00

    Abstract: A lubricant adapted for high-pressure and high-temperature use comprises finely-divided particles of organic material dispersed in mineral oil. Specified organic materials are polymerized and/or oxidized oils, e.g. tung, linseed, soya bean, castor and corn oils, and mixtures; vulcanized rubber and castor, soya bean, corn, linseed and tung oils; oxidized asphalts and petroleum resins; insoluble, high-melting soaps, e.g. the aluminium soap of polymerized tung oil; lignin; fatty-acid pitches; and insoluble, high-melting synthetic and natural resins, e.g. coumarone-indene resins. The particles may be ground up with or formed in the oil vehicle. If the particles are not self-sustaining, auxiliary particles may be employed to form a stable suspension, e.g. a soap such as aluminium stearate or sodium oleate may be dissolved, with heat, in mineral oil, cooled to form a gel, and agitated to produce finely-divided gel particles through which the lubricant-particles are distributed. Carnauba wax may be used. In examples: (1) and (2) tung oil dissolved in light petroleum oil is oxidized in the presence of a catalyst, e.g. cobalt naphthenate, by continuous circulation and agitation in contact with air; (3) powdered lignin is dispersed in light petroleum oil gelled with carnauba wax; (4) vulcanized corn oil, produced by treating corn oil dissolved in carbon tetrachloride with sulphur monochloride, is crushed to powder and ground with an equal volume of petroleum oil. A machine for testing lubricants is also described comprising a lower vertical chuck carrying three stator balls of carbon steel surrounded by a lubricant cup, and an upper aligned chuck carrying a single ball of chrome steel and adapted to be rotated by an electric motor. The lower chuck is movable vertically, e.g. by an hydraulic piston, to apply pressure and is mounted upon ball bearings so as to be free to turn. In use, the cup is filled with lubricant, the upper chuck is rotated and the lower chuck is raised to apply pressure, sufficient torque being applied to hold it against rotation. After the test, the area of wear on the lower balls is measured, and the load-sustaining capacity of the lubricant is computed from the bearing surface and the load.

    Improvements in suspensions for lubrication and other purposes
    10.
    发明专利
    Improvements in suspensions for lubrication and other purposes 未知

    公开(公告)号：GB464644A

    公开(公告)日：1937-04-22

    申请号：GB2950435

    申请日：1935-10-25

    Applicant: SULFLO CORP OF AMERICA

    Abstract: A liquid mineral oil or equivalent hydrocarbon is rendered capable of suspending finely divided particles, without destroying the free flowing character of the medium, by gelling the oil with "hydrogenated castor oil wax" and agitating to produce a discontinuous, gelatinous body. "Hydrogenated castor oil wax" is the wax-like product obtained by treatment of castor oil with hydrogen in the presence of a nickel or cobalt catalyst. Thus, a small amount of the wax is melted and dissolved in the oil by heating to 200--250 DEG F., after which the solution is cooled to form a gel and the gel is then broken up, by agitation, to form a suspending medium for lubricant in particles. Examples are given of the preparation of cutting, &c. lubricants containing sulphur particles. To avoid agglomeration of the particles a small amount of sulphonated castor oil may be added. A lubricant base may be prepared in concentrated form, capable of dilution with petroleum oil for use. Other finely divided solid lubricant particles which may be stably suspended comprise finely-divided selenium, tellurium, talc, slaked lime, white lead, white zinc, and cork dust. Suspensions for grinding, lapping and polishing mixtures may also be made containing suspended particles of emery, corundum, rouge, whiting, &c. U.S.A. Specification 1,913,300 is referred to.

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