Lubricants for gas compressors
    13.
    发明专利

    公开(公告)号:GB962433A

    公开(公告)日:1964-07-01

    申请号:GB778461

    申请日:1961-03-03

    Applicant: BASF AG

    Abstract: A colourless lubricant for gas compressors comprises a turbid suspension of 0.01% to 5% by weight of a hard wax (as defined in the Specification) containing polar groups, e.g. ester, amide or free acid groups, in a colourless lubricating oil, preferably paraffinum liquidum. The wax is montan wax, montan wax acid, montan wax esterified with an alcohol, e.g. ethylene glycol or butylene glycol, or a mixture of a montan wax acid and an ester of a higher alcohol. Calcium salts of montan wax acid may be added to the hard wax in amounts of 10, 20 or 30% by weight.

    Production of polyethylene
    14.
    发明专利

    公开(公告)号:GB956738A

    公开(公告)日:1964-04-29

    申请号:GB2388362

    申请日:1962-06-21

    Applicant: BASF AG

    Abstract: Ethylene is polymerized in tubular reactors at 1,000-4,000 Atm and 150-300 DEG C. with feeding of cold ethylene at several successive points in the reactor and using up to 10-1% oxygen as catalyst which is added preferably in solution, to the cold ethylene in such amount that the oxygen concentration in the united gas stream at the points of confluence in the reactor is at least 0.5 x 10-3%, preferably 10-3-10-2%, and the speed of the reaction mixture in the reactor is at least 2.5 m/sec., e.g. up to 10 m/sec. The main ethylene stream may first be heated to e.g. 170-200 DEG C. The cold ethylene stream may be at 10-100 DEG C. and the oxygen concentration may be higher in the second cold ethylene stream than in the first. The oxygen may be dissolved in water, alcohols, e.g. methanol, or hydrocarbons e.g. benzene. The polyethylene may be used to form articles or tubular film.

    Stuffing box packing for sealing plungers

    公开(公告)号:GB907935A

    公开(公告)日:1962-10-10

    申请号:GB3029460

    申请日:1960-09-02

    Applicant: BASF AG

    Abstract: 907,935. Stuffing-box packing. BADISCHE ANILIN- & SODA-FABRIK A.G. Sept. 2, 1960 [Sept. 5, 1959], No. 30294/60. Class 122 (5). A plunger 1 of a gas compressor is sealed in a stuffing-box 11, Fig. 1, by packing comprising at least one U-packing shaped ring 2 of elastic material, at least one throttle ring 6, and a scraper ring 9 of resilient material, e.g. metal or rubber-elastic material, arranged axially between the ring 6 and the compression chamber, the ring 6 being composed of a metallic lipped ring 19, Fig. 2, and a rubber-elastic, e.g. plastic, lipped ring 20, the inner lips 21, 22 of which are in contact with the plunger 1 whereas clearance is provided between the outer metal lip 23 and the stuffing-box wall. Lubricant under pressure is circulated, as indicated by the arrows, in the spaces between the rings. The lubricant pressure at 17 is greater than that at 15, which is equal to the suction gas pressure, but is less than the delivery gas pressure.

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