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    Improvements in the polymerisation of alpha, beta-unsaturated olefines with two to four carbon atoms
    13.
    发明专利
    Improvements in the polymerisation of alpha, beta-unsaturated olefines with two to four carbon atoms 未知

    公开(公告)号：GB899147A

    公开(公告)日：1962-06-20

    申请号：GB1781560

    申请日：1960-05-20

    Applicant: BASF AG

    Inventor： SPAENIG HERMANN ,  SCHMIDT-THOMEE GEORG

    IPC: C08F10/00

    Abstract: C2 to C4 olefins, e.g. ethylene and propylene, are polymerized with or without an inert solvent and using as catalyst an oxide of Ti, Zr, Hf or Th containing less oxygen than corresponds to the formula MeO2 wherein Me is the metal. Carriers and other metal oxides may be present and specified are active carbon, aluminium oxide, pumice, silicon dioxide, magnesium oxide, calcium oxide, boron oxide, copper oxide, iron oxide and manganese oxide. The catalysts may be obtained by reduction, e.g. TiO2 or titanium phosphate reduced by hydrogen or a metal of Group Ia, IIa or IIIb, or by oxidation, e.g. Ti+TiO2 or MnO, or by a combination of oxidation and reduction, e.g. Ti+ZrO2. Optionally the catalysts may be treated with BF3, SiF4, AlCl3, FeCl2 or ZnCl2. In examples the catalysts used also are ground to a finely divided state; octane and steam are used in the purification of the products. Specifications 823,307, 825,306 and 849,855 are referred to.

    Improvements in the production of salicylic acid derivatives
    15.
    发明专利
    Improvements in the production of salicylic acid derivatives 未知

    公开(公告)号：GB675796A

    公开(公告)日：1952-07-16

    申请号：GB309850

    申请日：1950-02-07

    Applicant: BASF AG

    Inventor： HOPFF HEINRICH ,  SPAENIG HERMANN

    IPC: C07C51/15

    Abstract: Salicylic acids substituted by alkyl, alkoxy, hydroxy or amino groups are obtained by the customary reaction between alkaline solution of the phenol, and carbon dioxide, performed continuously by pumping the reaction mixture through pressure vessels, preferably with the addition of oxidation-inhibitors, such as ascorbic acid. Examples give the production of p-amino-salicylic acid, 2 - hydroxy - 4 - amino - 5 - methylbenzoic acid, and gentisic acid by this method, the acids being liberated by mineral acid; sodium hydrosulphite being used as oxidation inhibitor.

    Process for the control of the temperature in chemical reactors by the indirect exchange of heat by means of water under pressure
    16.
    发明专利
    Process for the control of the temperature in chemical reactors by the indirect exchange of heat by means of water under pressure 未知

    公开(公告)号：GB952183A

    公开(公告)日：1964-03-11

    申请号：GB2288760

    申请日：1960-06-30

    Applicant: BASF AG

    Inventor： SPAENIG HERMANN ,  SCHMIDT-THOMEE GEORG ,  WEIZSAECKER KURT

    IPC: B01J19/00 ,  F22B1/16

    Abstract: 952,183. Heating and cooling systems for chemical reaction vessels. BADISCHE ANILIN- & SODA-FABRIK A.G. June 30, 1960 [July 1, 1959], No. 22887/60. Heading F4U. A heat transfer liquid, e.g. water, circulating through a system including a chemical reactor 6 and a main vessel 1, is maintained at a pressure sufficient to prevent any substantial formation of steam bubbles in the liquid chambers around the reactor. In the apparatus shown, the temperature of the circulating water is regulated by a thermally responsive element 19 which controls the operation of a cooling coil 17 and a heating coil 18 in the vessel 1 to maintain a constant water temperature in the system. Above the vessel 1 is an auxiliary vessel 2 connected with the vessel 1 by a narrow pipe 3 permits the water in the vessel 2 to be maintained at ambient temperature by a small cooling coil 10. Pressure of a gas such as nitrogen in a vessel 11 is transmitted to the space above the water in vessel 2 and hence to the circulating water throughout the system. The gas pressure is maintained constant at a pressure sufficient to prevent the formation of steam bubbles by a regulator 12. The water level in the vessel 2 is maintained constant by a float 14 which regulates make-up water supply and discharge valves 15, 16 connected into the water circulating system. In the process described for carrying away the heat of an exothermic chemical reaction, the water flowing in the reactor jackets 5 serves to heat up the reacting substances at the inlet end of the reactor and at the same time to withdraw heat generated in the middle and at the outlet end of the reactor

    Production of para-alkylphenols or para-cycloalkylphenols
    18.
    发明专利
    Production of para-alkylphenols or para-cycloalkylphenols 未知

    公开(公告)号：GB906219A

    公开(公告)日：1962-09-19

    申请号：GB376361

    申请日：1961-02-01

    Applicant: BASF AG

    Inventor： SPAENIG HERMANN ,  BECK JULIUS

    IPC: C07C37/14

    Abstract: Para-alkyl or -cycloalkyl phenols are obtained by reacting a phenol unsubstituted in the p- and in at least one o-position with a C3-20 alkene or cycloalkene in presence of 0.1-10% wt. ZnCl2 and 0.1-3% wt. HCl (with reference to the phenol) at between 50 and 150 DEG C., the phenol and alkene or cycloalkene being reacted in stoichiometric amounts or up to 5% mol excess of one of the reagents. The examples describe the preparation of p-t-butyl, -nonyl, i-octyl and -cyclohexyl phenols and p-t-butyl-o-cresol. Specific phenols listed are phenol; o- and m-cresols and m-xylenols; o-i-butyl, o-dodecyl, 2:5-dibutyl and 2:3-diethylphenols; o- and m-chloro and -bromophenols; 2:3- and 2:5-dichloro and -dibromophenols; salicylic acid, its ethyl ester and 2-methyl-5-nitrophenol; a -naphthol and its m-methyl, -butyl, -chloro and -nitro derivatives. Alkenes mentioned are butenes-1 and -2, and isobutene; the 2-methyl derivatives of butene-2, pentene-1 and 3:4- and 4:4-dimethylpentene-2; nonene-1, undecene-1, dodecene-6, octadecene-1, cyclohexene, cyclo-octene and methylcyclohexene-1.

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