34.
    发明专利
    未知

    公开(公告)号:DE50202933D1

    公开(公告)日:2005-06-02

    申请号:DE50202933

    申请日:2002-07-17

    Applicant: BASF AG

    Abstract: A process for preparing thermoplastic poly(3-hydroxyalkanoates) with a molar mass greater than 6 000 g/mol and a melting point in the range from 70 to 170° C., by reacting an oxirane compound with carbon monoxide in the presence of a transition metal catalyst which has rhodium(0), nickel(0), iron(0), cobalt(0) or palladium(0) as central metal and has been chelated with neutral Lewis bases, and also in the presence of diisocyanates, ortho esters, acetals, anhydrides, P 2 O 5 , MgO, MgCl 2 , MgSO 4 , zeolites, or a mixture of these, at a pressure in the range from 1 to 250 bar and at from room temperature to 150° C.

    35.
    发明专利
    未知

    公开(公告)号:BR0115853A

    公开(公告)日:2004-01-06

    申请号:BR0115853

    申请日:2001-12-03

    Applicant: BASF AG

    Abstract: Process for the carbonylation of n-pentenoic acid or its derivatives of the formula (I)where R is -CN or COOR where R is hydrogen, alkyl or aryl by reaction of a compound of the formula (I) with carbon monoxide and a compound (II) containing a hydroxyl group in the presence of a catalyst system, wherein the catalyst system is obtainable by reaction ofa) a source for a metal ion of a metal (III) of the 8th subgroup of the Periodic Table of the Elements withb) a bidentate phosphine ligand of the formula (IV)whereR , R , R , R , R , R , R , R , R , R , R , R independently of one another is an organic radical which in each case contains a carbon atom, via which the respective radical is linked to the relevant tertiary carbon atom mentioned in formula (IV);L , L independently of one another are a lower alkylene group;X is an arylene group.

    DIPHOSPHINE
    39.
    发明专利

    公开(公告)号:CA2461920A1

    公开(公告)日:2003-04-17

    申请号:CA2461920

    申请日:2002-09-26

    Applicant: BASF AG

    Abstract: The invention relates to diphosphine of formula Rl>P-(CH)n-PR2R3 wherein Rl is a bivalent radical which together with the phosphorous atom to which it is linked represents an unsubstituted or substituted 2-phospha- tricyclo[3.3.1.1{3,7}]decyl-group or a derivative thereof, wherein one or several carbon atoms are replaced by heteroatoms, R2, R3 independently represent a monovalent radical having 1 -20 atoms or a joint bivalent radica l having 2 - 20 atoms, n is 4 or 5, and the mixtures thereof as a suitable carboxylation system containing palladium or a palladium compound and said type of diphosphin. The invention also relates to a method for the carbonylation of a conjugated diene in the presence of said system.

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