131.
    发明专利
    未知

    公开(公告)号:BRPI0408722A

    公开(公告)日:2006-03-07

    申请号:BRPI0408722

    申请日:2004-03-24

    Applicant: BASF AG

    Abstract: A system which is suitable as a catalyst for the hydrocyanation of olefinically unsaturated compounds and comprises a) Ni(0) b) a compound which complexes Ni(0) as a ligand and contains trivalent phosphorus, c) a Lewis acid and d) a compound of the formula M Rn where M: Al or Ti R: identical or different monovalent alkoxy radicals, in which case a plurality of alkoxy radicals may be bonded together, and additionally, in the case that M=Al, R may be identical or different monovalent alkyl radicals, in which case a plurality of alkyl radicals may be bonded together or one or more alkyl radicals may be bonded to one or more of the abovementioned alkoxy radicals, n: valency of M, and processes for hydrocyanating an olefinically unsaturated compound in the presence of such a system.

    PURIFICACION DE ACIDO CIANHIDRICO POR DESTILACION

    公开(公告)号:AR044023A1

    公开(公告)日:2005-08-24

    申请号:ARP040101272

    申请日:2004-04-15

    Applicant: BASF AG

    Abstract: Un proceso para deshidratar ácido cianhídrico por destilación, el cual comprende la destilación de ácido cianhídrico crudo que contiene del 50 al 99,9 % en peso de HCN, del 0,1 al 40 % en peso de agua, del 0 al 15 % en peso de óxidos de carbono y opcionalmente del 0,01 al 1 % en peso de un estabilizante no volátil, a una presión de 1 bar a 2,5 bar, una temperatura en la base de 100° C a 130° C y una temperatura en la parte superior de 25° C a 54° C, en ausencia de un estabilizante volátil, en una columna de destilación para obtener una corriente de arrastre superior que contiene ácido cianhídrico purificado y óxidos de carbono, y una corriente de arrastre inferior que comprende agua y, si corresponde, el estabilizante no volátil. Un proceso para hidrocianar olefinas o dienos por: a) en una primera etapa, deshidratación de ácido cianhídrico crudo por medio de un proceso de acuerdo con cualquiera de las reivindicaciones 1 a 8 y opcionalmente su conservación en ausencia de un estabilizante; b) reacción del ácido cianhídrico anhidro en ausencia de un estabilizante con la olefina o el dieno en presencia de un catalizador de hidrocianación.

    138.
    发明专利
    未知

    公开(公告)号:DE102004004720A1

    公开(公告)日:2005-08-18

    申请号:DE102004004720

    申请日:2004-01-29

    Applicant: BASF AG

    Abstract: A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) reacting 1,3-butadiene with hydrogen cyanide over at least one catalyst to obtain a stream 1 which comprises 3-pentenenitrile, 2-methyl-3-butenenitrile, the at least one catalyst and 1,3-butadiene, (b) distilling stream 1 in a column to obtain a high-1,3-butadiene stream 2 as the top product and a low-1,3-butadiene stream 3 as the bottom product which comprises 3-pentenenitrile, the at least one catalyst and 2-methyl-3-butenenitrile, (c) distilling stream 3 in a column to obtain a stream 4 as the top product which comprises 1,3-butadiene, a stream 5 which comprises 3-pentenenitrile and 2-methyl-3-butenenitrile at a side draw of the column, and a stream 6 as the bottom product which comprises the at least one catalyst, (d) distilling stream 5 to obtain a stream 7 as the top product which comprises 2-methyl-3-butenenitrile, and a stream 8 as the bottom product which comprises 3-pentenenitrile.

    140.
    发明专利
    未知

    公开(公告)号:DE102004004683A1

    公开(公告)日:2005-08-18

    申请号:DE102004004683

    申请日:2004-01-29

    Applicant: BASF AG

    Abstract: An adiponitrile/methylglutaronitrile preparation process includes distilling a reaction stream to obtain stream 3 depleted in pentenenitriles (bottom product) and stream 4 enriched in pentenenitriles (top product); extracting stream 3 obtaining stream 6 enriched with extractant (top product) and stream 7 depleted in extractant (bottom product); distilling stream 6 obtaining stream 8 comprising the catalyst (bottom product) and stream 9 comprising the extractant (top product); distilling stream 7 obtaining stream 10 (bottom product) and stream 11 comprising the extractant (top product); distilling stream 10 obtaining stream 12 comprising catalyst degradation products, at least one promotor, adiponitrile and methylglutaronitrile (bottom product) and stream 13 comprising pentenenitriles (top product); distilling stream 12 obtaining stream 14 comprising catalyst degradation products and the promotor(s) (bottom product) and stream 15 comprising adiponitrile and methylglutaronitrile (top product); distilling stream 15 obtaining stream 16 comprising adiponitrile (bottom product) and stream 17 comprising methylglutaronitrile (top product).

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