中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

14 records (took 0.02 seconds)

    Production of an aluminum base grease containing organic amines
    5.
    发明授权
    Production of an aluminum base grease containing organic amines 失效
    生产含有机胺的铝基润滑脂

    公开(公告)号：US2491641A

    公开(公告)日：1949-12-20

    申请号：US67972746

    申请日：1946-06-27

    Applicant: SHELL DEV

    Inventor： BONDI ARNOLD A

    CPC classification number: C10M5/00 ,  C10M2205/026 ,  C10M2207/125 ,  C10M2207/129 ,  C10M2207/20 ,  C10M2209/00 ,  C10M2209/02 ,  C10M2209/10 ,  C10M2215/04 ,  C10M2215/044 ,  C10M2215/22 ,  C10M2215/221 ,  C10M2215/225 ,  C10M2215/226 ,  C10M2215/26 ,  C10M2215/30 ,  C10N2210/00 ,  C10N2210/03 ,  C10N2250/10 ,  C10N2270/00

    Abstract: Aluminium soap lubricating greases are made by forming a mixture of a lubricating oil, an aluminium soap and an aliphatic or cycloaliphatic amine containing 5-36 carbon atoms in the molecule or a fatty acid salt of an aliphatic or cyclo-aliphatic amine, said salt containing 10-36 carbon atoms in the molecule, or a heterocyclic nuclear amine containing 5-24 carbon atoms in the molecule or a fatty acid salt of a heterocyclic nuclear amine, said salt containing 10-28 carbon atoms in the molecule, continuously feeding the grease in a hot fluid condition on to a moving horizontal heat-conducting belt (see Specification 642,948), forming a thin layer of grease thereon, passing the moving belt supporting the grease layer through one or more cooling zones, and cooling the grease while in a quiescent state by subjecting the grease in said cooling zone or zones to the action of a heat-absorbing medium until a smooth substantially homogeneous grease gel is produced. The proportion of amine or amine salt in the grease may be 0.05-0.3 per cent by weight and the proportion of aluminium soap may be up to 5.5-6.0 per cent by weight. The amine, if free, preferably contains 10-18 carbon atoms in the molecule and if a fatty acid salt of an amine is used, the salt preferably contains 10 to 23 carbon atoms in the molecule. Specified amines include octylamine, laurylamine, myristylamine, palmitylamine, stearylamine, tri-butylamine, or di- or tri amylamine, mono- or di-cyclohexylamine, diN,N1-dodecylethylenediamine, alkylated morpholines, pyridine and hydrogenated pyridine. Alternatively fatty acid salts of any of the above amines may be used, e.g. amyl amine oleate. The fatty acids used to make the aluminium soap may be any of the fatty acids commonly used in grease manufacture, e.g. saturated fatty acids containing 14-24 carbon atoms in the molecule and unsaturated fatty acids containing 18-22 carbon atoms in the molecule. The fatty acid may be stearic acid, 12-hydroxy stearic acid, 9,10-di-hydroxy stearic acid, 4-hydroxy palmitic acid, iso-stearic acid, iso-palmitic acid, ricinoleic acid, oleic acid, linoleic acid, hydrogenated fish oil fatty acids, palm oil fatty acids, and cotton seed oil fatty acids. When aluminium stearate is used it may be the mono-, di- or tri-stearate. The lubricating oil is preferably a mineral oil having a viscosity of 100-2000 S.S.U. at 100 DEG F. The grease may contain a small proportion of polyisobutylene, e.g. 0.3-0.5 per cent by weight, and/or 0.05-0.25 per cent by weight of gum rosin or abietic acid. The grease may be cooled in a single continuous operation to a temperature below that at which the grease gel is transformed from a rubbery to a buttery consistency e.g. to below about 105-185 DEG F. The cooling period may be below one hour, e.g. 3-20 minutes and the flow of the cooling medium may be countercurrent to that of the grease. The thickness of the layer of grease on the cooling belt may be about 0.1-1.0 inch. The layer of grease may be passed through two successive cooling zones, one cooling zone (the "hot" cooling zone) being adjacent the hot end of the cooling belt, and the other cooling zone (the "cold" cooling zone) being adjacent the discharge end of the cooling belt. The ratio of the velocity of the cooling medium in the cold zone to that in the hot zone may range from 1 : 1 to 10 : 1. The cooling medium may be air and the grease may be cooled from about 350 DEG F. to about 80-90 DEG F. In an example, 55 lbs. of aluminium di-stearate and 110 lbs. of mineral oil (viscosity 100 S.S.U. at 100 DEG F.) are mixed and heated to about 350 DEG F. 830 lbs. of mineral oil having a viscosity of 2000 S.S.U. at 100 DEG F., 0.5 lbs. of mono-stearylamine and 3 lbs. of a 7 per cent solution of polyisobutylene in mineral oil are added at about 325-355 DEG F. and the hot homogeneous liquid grease fed on to the belt of the cooling apparatus to a depth of about one-third of an inch. The grease is cooled to about 95 DEG F. in 10 minutes by means of a current of air having an initial temperature of about 80 DEG F. Specification 563,429 also is referred to.

    Process of and apparatus for cooling a lubricant
    10.
    发明授权
    Process of and apparatus for cooling a lubricant 失效
    用于冷却润滑剂的方法和设备

    公开(公告)号：US2527789A

    公开(公告)日：1950-10-31

    申请号：US66679046

    申请日：1946-05-02

    Applicant: SHELL DEV

    Inventor： BONDI ARNOLD A

    CPC classification number: C10M5/00 ,  C10M2201/02 ,  C10M2207/125 ,  C10M2207/129 ,  C10M2207/16 ,  C10M2207/281 ,  C10M2207/282 ,  C10M2207/283 ,  C10M2207/286 ,  C10M2207/40 ,  C10M2207/404 ,  C10M2209/103 ,  C10M2209/104 ,  C10M2209/105 ,  C10M2209/106 ,  C10M2209/108 ,  C10M2209/109 ,  C10N2210/00 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2210/03 ,  C10N2250/10 ,  C10N2270/00

    Abstract: In the manufacture of lubricating grease the grease is fed in fluid condition on to a heat conductive moving surface in an amount to form a continuous thin layer on the surface and the grease layer on the surface is passed through a cooling zone while cooling gas is flowed through the zone to solidify the grease, a shearing stress being avoided. The thickness of the grease layer may be about 0.1 inch to an inch and more particularly about p 0.2-0.4 inch. As shown, molten grease is fed into a cooling apparatus and distributed uniformly over the surface of a horizontal endless steel belt 19, Figs. 3 and 6, by an inlet conduit 41, header 42 and distributing outlets 43. An adjustable baffle 44, Figs. 2, 3 and 6, positioned between the outlets 43 and the exhaust stack 38, Fig. 6, of the sheet metal casing 10, Fig. 1, prevents too rapid cooling of the grease immediately after being fed, and permits the grease in hot liquid condition to spread out on the surface of the belt in a uniform layer. A dam 45 of angular cross-section (Fig. 2), provided with oil-resistant synthetic rubber ends or surfaces where it is in contact with the grease, prevents the grease from flowing off the end of the belt. The belt 19, Fig. 6, is rotated in a clockwise direction and the cooled grease is removed from the belt by a scraper 46, Figs. 5 and 8, and is caught in the hopper 47 from which it is discharged through ports fitted with sliding covers 50 and 51 into either one of the tanks 48, 49 fitted with valves 52, pumps 53 and strainers 54, Fig. 6. The belt 19 is trained over pulleys 17 and 18, the latter being belt driven by a variable speed transmission and motor. The belt is tensioned by the frame 24 urged by means of a weight 25. The belt 19 is provided with a pair of strips, preferably of a synthetic rubber, 20 and 21, Fig. 3, which prevent the hot grease flowing off the edges of the belt. The upper course of the belt is preferably supported on a number of U-shaped steel rods 29, Figs. 1 and 4, carried by the supporting frame members 30 and provided with level-adjusting nuts 31 and 32. Cooling air is fed into the outlet end of the casing 12 from a pair of blowers 33 and 34, Fig. 6, which direct air along the upper and lower surfaces respectively of the upper run of the belt. A baffle 35 within the casing directs the flow of air from the blower 33 substantially parallel with the upper run of the belt 19. Two or more discharges leading into both sides of the casing at the grease outlet end (as at 36 and 37, Fig. 7) are provided from the lower blower. The air is exhausted from the casing by the stack 38, Fig. 6, directly communicating with the upper portion of the casing at the grease inlet end, and provided with a pair of ducts 39 and 39a, Figs. 1 and 6, communicating with the casing below the upper course of the belt. The lower course 19a of the belt may be supported on idler pulleys 40, Figs. 6 and 7, or on steel rods in the same manner as the upper course, and may be provided with means for supplying cooling medium through the casing. In a modified form of the apparatus an intermediate pair of exhaust ducts 55 and 55a, Figs. 9 and 10, are provided at a point 56 located approximately one-third of the length of the casing from the hot end thereof, the casing 57 (corresponding with the casing 10 shown in Fig. 1) being thus divided into a "hot zone" A and a "cold zone" B. The casing 57 is provided with adjustable baffles 58 and 58a, Figs. 9, 10 and 11, by means of which the relative amounts of air escaping from the casing through the pair of ducts 55 and 55a and the pair 39 and 39a respectively may be controlled. In this manner the grease may be cooled more slowly during its passage through the "hot zone" A than during its subsequent travel through the "cold zone" B. The invention is said to be suitable for the manufacture of hydrous and anhydrous sodium soap greases (including those containing crystallization inhibitors such as polymerized higher polyalkylene glycols), and lithium soap greases. Examples are furnished of the manufacture of such greases. Specification 639,203 is referred to.

Patent Agency Ranking