82.
    发明专利
    未知

    公开(公告)号:CH599156A5

    公开(公告)日:1978-05-12

    申请号:CH1347175

    申请日:1975-10-16

    Applicant: DEGUSSA

    Abstract: Pyridine and 3-methyl pyridine are prepared by reacting acrolein with ammonia in the gas phase on a catalyst in a fluidized bed. The acrolein and ammonia are introduced separately in gaseous form into the reactor.

    Grey pigment with good technological properties

    公开(公告)号:GB1139620A

    公开(公告)日:1969-01-08

    申请号:GB2932367

    申请日:1967-06-26

    Applicant: DEGUSSA

    Abstract: 1,139,620. Modified carbon black. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT. 26 June, 1967 [24 June, 1966], No. 29323/67. Heading C1A. [Also in Division C4] A grey pigment comprising carbon black and a finely divided metal and/or metalloid oxide is obtained by activating the surface of the carbon black by reaction with a silicon or titanium halide, particularly the tetrachloride, and subsequently hydrolysing the activated carbon by introducing it either into water, or into a suspension of a finely divided precipitated or pyrogenic oxide of silicon and/or titanium and/or aluminium, or into a precipitation solution of a salt of one of these elements. The process is applicable to lamp black, of average particle size 100-200 mÁ, or to furnace black of 20-100 mÁ.

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