41.
    发明专利
    未知

    公开(公告)号:FI971175A0

    公开(公告)日:1997-03-20

    申请号:FI971175

    申请日:1997-03-20

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/03651 Sec. 371 Date Mar. 10, 1997 Sec. 102(e) Date Mar. 10, 1997 PCT Filed Sep. 21, 1995 PCT Pub. No. WO96/09335 PCT Pub. Date Mar. 28, 1996A process for the preparation of polytetrahydrofuran or polytetrahydrofuran monoesters of C1-C10 monocarboxylic acids by the polymerization of tetrahydrofuran over a heterogeneous catalyst in the presence of one of the telogens water, 1,4-butanediol or polytetrahydrofuran having a molecular weight of from 200 to 700 dalton or a C1-C10 monocarboxylic acid or mixtures of these telogens, wherein a supported catalyst is used as catalyst, which contains a catalytically active amount of an oxygen-containing tungsten or molybdenum compound or mixtures of these compounds on an oxidic support material and which was calcined at temperatures ranging from 500 DEG to 1000 DEG C. following the application of the precursor compounds of said oxygen-containing molybdenum and/or tungsten compounds to the support material precursor.

    CATALIZADOR Y PROCEDIMIENTO PARA LA OBTENCION DE POLITETRAHIDROFURANO.

    公开(公告)号:ES2231718T3

    公开(公告)日:2005-05-16

    申请号:ES02748813

    申请日:2002-06-24

    Applicant: BASF AG

    Abstract: Catalizador para la obtención de politetrahidrofurano, copolímeros de politetrahidrofurano, diésteres o monoésteres de estos polímeros mediante polimerización de tetrahidrofurano en presencia de al menos un telógeno y/o comonómero estando presente el mismo en forma de cuerpos moldeados de catalizador o partículas de catalizador con un volumen del cuerpo moldeado o partícula individual de al menos 0, 05 mm3, preferentemente de al menos 0, 2 mm3 y particularmente de 0, 1 mm3 y mostrando este catalizador ambas características a) y b): a)Distribución de radios de poros con al menos un máximo de la distribución de poros en el intervalo de 100 hasta 5000 A de radios de poros, y b)Volumen de poros de poros de catalizador con radios de 2oo a 3000 A mayor que 0, 05 cm3/g y/o radios de 200 a 5000 A mayor que 0, 075 cm3/g y/o un radio de > 200 A mayor que 0, 1 cm3/g.

    METHOD OF OBTAINING POLYTETRAHYDROFURANE

    公开(公告)号:PL179471B1

    公开(公告)日:2000-09-29

    申请号:PL31930095

    申请日:1995-09-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/03651 Sec. 371 Date Mar. 10, 1997 Sec. 102(e) Date Mar. 10, 1997 PCT Filed Sep. 21, 1995 PCT Pub. No. WO96/09335 PCT Pub. Date Mar. 28, 1996A process for the preparation of polytetrahydrofuran or polytetrahydrofuran monoesters of C1-C10 monocarboxylic acids by the polymerization of tetrahydrofuran over a heterogeneous catalyst in the presence of one of the telogens water, 1,4-butanediol or polytetrahydrofuran having a molecular weight of from 200 to 700 dalton or a C1-C10 monocarboxylic acid or mixtures of these telogens, wherein a supported catalyst is used as catalyst, which contains a catalytically active amount of an oxygen-containing tungsten or molybdenum compound or mixtures of these compounds on an oxidic support material and which was calcined at temperatures ranging from 500 DEG to 1000 DEG C. following the application of the precursor compounds of said oxygen-containing molybdenum and/or tungsten compounds to the support material precursor.

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