62.
    发明专利
    未知

    公开(公告)号:DE10160143A1

    公开(公告)日:2003-06-18

    申请号:DE10160143

    申请日:2001-12-07

    Applicant: BASF AG

    Abstract: Selective hydrogenation of alpha , beta -ethylenically unsaturated aldehydes (II) to corresponding unsaturated alcohols (I) comprises performing reaction in a reactor containing a liquid phase, suspended catalyst and optionally a gas phase, The liquid phase and gas phase (if present) are supplied to the reactor through a device (A) with openings or channels having a hydraulic diameter of 0.5-2 mm. Selective hydrogenation of unsaturated aldehydes of formula R R C=CR -CHO (II) to corresponding alcohols of formula R R C=CR -CH2OH (I) comprises performing the reaction in a reactor containing a liquid phase, suspended catalyst and optionally a gas phase. The liquid phase and optionally the gas phase are supplied to the reactor through a device (A) with openings or channels having a hydraulic diameter of 0.5-2 mm. R , R = H, optionally substituted mono- or polyunsaturated 1-20C alkyl (sic; some of the groups exemplified in the disclosure are saturated), optionally substituted aryl or optionally substituted heterocyclyl; R = H or 1-4C alkyl.

    65.
    发明专利
    未知

    公开(公告)号:DE59805432D1

    公开(公告)日:2002-10-10

    申请号:DE59805432

    申请日:1998-06-04

    Applicant: BASF AG

    Abstract: 2-Cyclododecyl-propanol [sic], which is in demand as musk scent, is prepared in an advantageous industrial process by reacting cyclododecene with an excess of propionic acid or of a propionic acid derivative in the presence of catalytic amounts of a free-radical initiator, and subsequently catalytically hydrogenating the 2-cyclododecylpropionic acid which is formed or the corresponding 2-cyclododecylpropionic acid derivatives.

    66.
    发明专利
    未知

    公开(公告)号:DE59804528D1

    公开(公告)日:2002-07-25

    申请号:DE59804528

    申请日:1998-07-20

    Applicant: BASF AG

    Abstract: A process for preparing acetals of the formula Iwherea) the Rs are, independently of one another, a C1-C20-alkyl or C3-C20-alkenyl radical, orb) the two R radicals together form the members of an unsubstituted or C1-C10-alkyl-substituted 5- to 7-membered cyclic acetal,by reacting 3-methyl-2-butenal in the presence of sulfamic acid, of a N-(C1-C8-alkyl)sulfamic acid or of a N,N-di(C1-C8-alkyl)sulfamic acid as catalyst with:an alcohol of the formula R-OH (IIa), oran orthoester of the formula HC-(OR)3 (III) ora mixture of an alcohol of the formula (IIa) and an orthoester of the formula (III), oran alcohol of the formula HO-(CH2)m-OH (IIb), where m is a number from 2 to 4, and (CH2)m group in the alcohol IIb may be substituted by a C1-C10-alkyl group.

    METHOD OF PRODUCING ALKANE SULFONIC ACID

    公开(公告)号:SK7152001A3

    公开(公告)日:2002-01-07

    申请号:SK7152001

    申请日:1999-11-22

    Applicant: BASF AG

    Abstract: The invention relates to a process for the prepartaion of alkanesulfonic acids, comprising the following steps:(a) oxidation of alkylmercaptans and/or dialkyl disulfides and/or dialkyl polysulfides having from three to nine sulfur atoms with nitric acid to form alkanesulfonic acids, water, nitrogen oxides and other byproducts,(b) regeneration of the nitrogen oxides obtained from step (a) with oxygen to give nitric acid and recycling of the nitric acid to step (a),where steps (a) and (b) are carried out in reaction chambers separate from one another.

    70.
    发明专利
    未知

    公开(公告)号:DE10026139A1

    公开(公告)日:2001-11-29

    申请号:DE10026139

    申请日:2000-05-26

    Applicant: BASF AG

    Abstract: The invention relates to a method for the selective crystallization of poly- or monomethylol alkanoic acids of the general formula (I), wherein R is the same or different and represents a methylol group or a substituted or unsubstituted aliphatic hydrocarbon, with an essentially monomodal particle size distribution. This particle size distribution is achieved by crystallization in a temperature interval of from 85 DEG C to 50 DEG C observing a cooling rate of

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