45.
    发明专利
    未知

    公开(公告)号:DE19840253A1

    公开(公告)日:2000-03-09

    申请号:DE19840253

    申请日:1998-09-03

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing cyanovaleric acid or esters thereof by reacting 2-, 3- or 4-pentene nitrile or mixtures thereof with carbon monoxide and with a compound containing hydroxyl groups in the presence of a catalyst system. Said catalyst system comprises: (i) a palladium (II) compound, (ii) a bidentate diphosphine ligand and (iii) an anion source. The invention also relates to novel catalyst systems with diphosphine ligands of the bis(phosphinomethyl)amine type.

    Direct preparation of vinylphosphonic acid and esters useful as comonomers in adhesive or flame-retardant plastics production

    公开(公告)号:DE19828419A1

    公开(公告)日:1999-12-30

    申请号:DE19828419

    申请日:1998-06-25

    Applicant: BASF AG

    Abstract: The preparation of vinylphosphonic acid compounds (I) by reacting phosphorous acid compounds (II) with acetylene is carried out in the presence of palladium(0) (Pd(0)) complexes or corresponding platinum (Pt) complexes with bidentate ligands (III) as catalyst. The preparation of vinylphosphonic acid compounds of formula (I) by reacting phosphorous acid compounds of formula (II) with acetylene is carried out in the presence of palladium(0) (Pd(0)) complexes or corresponding platinum (Pt) complexes with bidentate ligands of formula (III) as catalyst. R , R = hydrogen (H), 1-16 carbon (C) alkyl, 6-12 C aryl, 7-12 C alkaryl or 7-12 C aralkyl, optionally mono- or poly-substituted by halogen, hydroxyl, acyl or acetoxy; X = ferrocenylene or 1-6 C alkylene (optionally interrupted with oxygen (O), sulfur (S) or imino (NR'') in the chain; R'' = H, 1-6 C alkyl, 6-12 C aryl, 7-13 C alkaryl, 7-13 C aralkyl or 5-8 C cycloalkyl; R = 1-12 C alkyl, 6-12 C aryl, 5-8 C cycloalkyl, 7-13 C aralkyl, 7-13 C alkaryl or 7-16 C alkoxyaryl; or 2 R attached to one phosphorus (P) atom = 5-8 C alkylene or 6-10 C cycloalkylene. An Independent claim is also included for the use of the Pd(0) or corresponding Pt complexes in the preparation of (I).

    50.
    发明专利
    未知

    公开(公告)号:NO329097B1

    公开(公告)日:2010-08-23

    申请号:NO20044447

    申请日:2004-10-19

    Applicant: BASF AG

    Abstract: The invention relates to a process for the preparation of methyl formate by reacting methanol with carbon monoxide at a pressure of from 0.5 to 10 MPa abs. and a temperature of from 50 to 150° C. in the presence of a metal alkoxide as catalyst in a reactor, in which a gas stream is withdrawn from the reactor, entrained methyl formate is removed from this gas stream by condensation, and all or some of the remaining gas stream is returned to the reactor as circulating-gas stream and a mean gas superficial velocity of from 1 to 20 cm/s is set in at least one region of the reactor in which the gas flows essentially in one direction.

Patent Agency Ranking