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    Improvements in the production of carbazole
    62.
    发明专利
    Improvements in the production of carbazole 未知

    公开(公告)号：GB862606A

    公开(公告)日：1961-03-15

    申请号：GB3328459

    申请日：1959-10-01

    Applicant: BASF AG

    Inventor： SEEFELDER MATTHIAS ,  MAISACK HERBERT

    Abstract: Carbazole is produced by heating cyclohexanone-azine in the presence of at least one of the catalysts boron fluoride, its complex compounds with ethers or alcohols, a mineral acid, an acid salt of such an acid, or a neutral salt of the said acids or acid salts with a weak base, to a temperature between 150 DEG and 370 DEG C. and converting the octahydro carbazole so obtained into carbazole by heating it to temperatures in the range 200 DEG -620 DEG C. in the presence of a dehydrogenation catalyst. The process may be carried out continuously or otherwise and if desired the two steps may be combined by mixing the catalysts for the two stages and contacting cyclohexanoneazine with the mixed catalyst at 200-370 DEG C. Suitable dehydrogenation catalysts are, for example, the metals of Group Ib and VIII of the Periodic System such as copper, cobalt, nickel and platinum; oxides of metals of Group IIb, Vb and VIb such as oxides of zinc, cadinium, vanadium and chromium; and sulphides of cobalt, nickel, molybdenum, or tungsten; or mixtures of these. If desired the azine starting material may be diluted with an inert gas.

    Production of n, n-disubstituted formamidines
    66.
    发明专利
    Production of n, n-disubstituted formamidines 未知

    公开(公告)号：GB1024194A

    公开(公告)日：1966-03-30

    申请号：GB128063

    申请日：1963-01-11

    Applicant: BASF AG

    Inventor： SEEFELDER MATTHIAS ,  JENTZSCH WOLFGANG

    Abstract: Symmetrical N,N1-disubstituted formamidines of formula R-NH-CH=N-R, in which R represents alkyl radicals, aralkyl radicals, or alkyl and aralkyl radicals substituted with dialkylamino groups containing 1 to 4 carbon atoms in the alkyl radical, alkoxy groups containing 1 to 4 carbon atoms, nitrile or hydroxy groups, are prepared by mixing an amine of formula R-NH2 with hydrogen cyanide in a molar ratio of at least 2: 1 at a temperature of from 50 DEG to 135 DEG C. until no more ammonia is liberated, and then distilling the reaction mixture. The process may be carried out in an inert solvent.

    Condensation products of piperazine and lactones and their use as leveling agents in textile dyeing
    67.
    发明专利
    Condensation products of piperazine and lactones and their use as leveling agents in textile dyeing 未知

    公开(公告)号：GB976063A

    公开(公告)日：1964-11-25

    申请号：GB2103463

    申请日：1963-05-27

    Applicant: BASF AG

    Inventor： REPPE HANS-GERHARD ,  ROKOHL RUDOLF ,  SEEFELDER MATTHIAS

    IPC: C07D295/02 ,  C07D295/027 ,  C07D295/185 ,  C08G63/08 ,  C08G73/00

    Abstract: The invention comprises water-soluble condensation products having a mean molecular weight of about 700 to about 1,000 formed by heating piperazine with a lactone containing 3 to 8 carbon atoms in the ring, preferably a gamma lactone, in the molar ratio of 1:0.4 to 1:2 to above 140 DEG C. In a preferred preparation the reactant mixture is first heated at about 150 DEG C. for 1 to 2 hours and then at 200 DEG to about 300 DEG C. for 10 to 60 minutes. The examples relate to the condensation products of piperazine and butyrolactone of varying molecular proportions and their use as leading agents in textile dyeing (see Division D1).ALSO:Water-soluble condensation products having a mean molecular weight of about 700 to about 1000 formed by heating piperazine with a lactone containing 3 to 8 carbon atoms in the ring in the molar ratio of 1:04 to 1:2 to above 140 DEG C. are employed, usually in amounts of 0.1 to 3 g.per litre, as leading agents in textile dyeing. Dyeing may be effected in the presence of said agents or they may be used for a leveling after treatment of non-level dyeings. Specified dyes are vat, sulphur and substantive dyes, an alkaline vat being employed when leveling vat or sulphur dyeings, and the process is especially suitable for dyeing fibres of cellulose at any stage of manufacture. The examples relate to the dyeing of slivers of a cotton-rayon staple fibre, cotton skein yarn and cotton piece goods.

    Production of pentaerythritol trichlorohydrin
    70.
    发明专利
    Production of pentaerythritol trichlorohydrin 未知

    公开(公告)号：GB925467A

    公开(公告)日：1963-05-08

    申请号：GB3262661

    申请日：1961-09-12

    Applicant: BASF AG

    Inventor： NEUBAUER GERALD ,  SEEFELDER MATTHIAS

    Abstract: A process for the production of pentaerythritol trichlorhydrin comprises dissolving pentaerythritol in a reaction product of pentaerythritol and hydrogen chloride, passing hydrogen chloride in at least the amount theoretically necessary through the resultant solution at a temperature between about 170 DEG to 200 DEG C., at a pressure between atmospheric and about 5 atmos, and recovering the pentaerythritol trichlorhydrin thus produced. Specified pentaerythritol -HCl reaction products are the mono-, di- and trichlorhydrins and 5,5-bischlormethyldioxan-1,3 and mixtures thereof. The effluent HCl may be recirculated after condensation of liquid entrained substances. Batchwise and continuous operation is possible. A series of reaction vessels may be used, the pentaerythritol, preferably dissolved in dichlorhydrin, being chlorinated up to about the dichlorhydrin stage in the first vessel at 130-175 DEG C., and converted to the trichlorhydrin at 170-200 DEG C. in subsequent vessel(s). Specification 764,664 is referred to.

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