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    1.
    发明专利
    未知

    公开(公告)号：ES2140772T3

    公开(公告)日：2000-03-01

    申请号：ES96114445

    申请日：1996-09-10

    Applicant: BASF AG

    Inventor： WITTWER ARNOLD DR ,  SAUERWALD MANFRED DR

    IPC: C07C67/44 ,  C07C69/675

    Abstract: The prodn. of the neopentyl glycol ester of hydroxypivalic acid (HPN) comprises reacting a soln. of hydroxy-pivalaldehyde (HPA) in a column at 20-200 mbar and a head temp. of 80-150 degrees C, distilling of low-boiling components at the top of the column and taking off HPN from the bottom.

    2.
    发明专利
    未知

    公开(公告)号：DE19534496A1

    公开(公告)日：1997-03-20

    申请号：DE19534496

    申请日：1995-09-18

    Applicant: BASF AG

    Inventor： WITTWER ARNOLD DR ,  SAUERWALD MANFRED DR

    IPC: C07C67/44 ,  C07C69/675 ,  C07C67/54 ,  C07C47/19 ,  C07C45/64

    Abstract: The prodn. of the neopentyl glycol ester of hydroxypivalic acid (HPN) comprises reacting a soln. of hydroxy-pivalaldehyde (HPA) in a column at 20-200 mbar and a head temp. of 80-150 degrees C, distilling of low-boiling components at the top of the column and taking off HPN from the bottom.

    Ketones prepd. from aldehydes, ketones and hydrogen - using catalyst contg. rare earth cpd. and group eight metal
    4.
    发明专利
    Ketones prepd. from aldehydes, ketones and hydrogen - using catalyst contg. rare earth cpd. and group eight metal 未知

    公开(公告)号：DE2625540A1

    公开(公告)日：1977-12-22

    申请号：DE2625540

    申请日：1976-06-05

    Applicant: BASF AG

    Inventor： NISSEN AXEL DR ,  HEILEN GERD DR ,  WOERZ GERD DR ,  FLIEGE WERNER DR ,  WITTWER ARNOLD DR

    IPC: B01J23/63 ,  B01J23/83 ,  C07C45/73 ,  C07C45/74 ,  C07C49/06 ,  C07C45/00 ,  C07C49/20

    Abstract: A process for the prepn. of higher ketones of formula: R'CH2CH2COR2 comprises the reaction of an aldehyde of formula (I): R1-CHO with ketones of formula (II) CH3COR2 at 80-280 degrees C in the presence of hydrogen and a catalytic system, which contains an oxide or salt of a rare earth metal or mixts. of these and one or more Group VIII metals. In the above, R' is 1-20C alkyl, esp. 1-5C), aryl or cycloalkyl opt. substd. by alkyl, or 7-20C (pref. 7-10 C) aralkyl; the above gps. may also be substd. by OH or alkoxyl gps. inert to the reaction conditions; R2 is the same as R'. Typical cpds. are methyl isoamyl ketone used as a solvent and intermediate and 4-phenyl-butan-2-one used in perfumery. As a result of the catalyst which favours both the condensation and hydrogenation steps, the process is more selective, simpler, cheaper and gives higher yields compared with previous processes. Using acetone and methyl propanol, the catalyst is 10% Ni, 10% Co, 10% rare earth oxides (95% Nd2O3) on an alumina support giving a mixture contg. 40.8% starting materials and 34.3% 5-methylhexane-2-one. The pref. reaction temp. is 140-220 degrees C.

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