REFRIGERANTES PARA SISTEMAS DE REFRIGERACION EN ACCIONAMIENTOS DE PILAS COMBUSTIBLES.

    公开(公告)号:ES2271104T3

    公开(公告)日:2007-04-16

    申请号:ES01991850

    申请日:2001-12-14

    Applicant: BASF AG

    Abstract: Procedimiento para la protección de accionamientos de pilas combustibles frente a la corrosión con el uso de sistemas de refrigeración, que se basan en concentrados de agente anticongelante a base de alquilenglicoles o sus derivados, a partir de los cuales se obtienen como resultado composiciones de refrigerante acuosas utilizables con una conductividad de 50 µS/cm como máximo, caracterizado porque los concentrados de agente anticongelante contienen ésteres del ácido ortosilícico de fórmula I general en la que las variables R1 a R4 son iguales o distintas y significan sustituyentes alquilo de C1 a C20, alquenilo de C2 a C20, hidroxialquilo de C1 a C20, dado el caso glicol éter y/o arilo de C6 a C12 sustituidos de fórmula ¿(CH2-CH2-O)n-R5, significando R5 hidrógeno o alquilo de C1 a C5 y representando n el número de 1 a 5.

    64.
    发明专利
    未知

    公开(公告)号:AT337383T

    公开(公告)日:2006-09-15

    申请号:AT01991850

    申请日:2001-12-14

    Applicant: BASF AG

    Abstract: The invention relates to antifreeze concentrates for cooling systems in fuel cell drives, from which are produced ready-to-use aqueous cooling agent compositions having a maximum conductivity of 50 mus/cm, based on alkylene glycols or the derivatives thereof, and containing orthosilicic acid esters of formula (I) wherein the variables R 1 to R 4 are the same or different and represent C 1 -C 20 alkyl substituents, C 2 -C 20 alkenyl substituents, C 1 -C 20 hydroxyalkyl substituents, optionally substituted C 6 -C 12 aryl substituents and/or glycol ether substituents of formula (CH 2 -CH 2 -O) n -R 5 wherein R 5 represents hydrogen or C 1 -C 5 alkyl and n represents a number between 1 and 5

    COOLING AGENTS FOR COOLING SYSTEMS IN FUEL CELL DRIVES

    公开(公告)号:PL362913A1

    公开(公告)日:2004-11-02

    申请号:PL36291301

    申请日:2001-12-14

    Applicant: BASF AG

    Abstract: The invention relates to antifreeze concentrates for cooling systems in fuel cell drives, from which are produced ready-to-use aqueous cooling agent compositions having a maximum conductivity of 50 mus/cm, based on alkylene glycols or the derivatives thereof, and containing orthosilicic acid esters of formula (I) wherein the variables R 1 to R 4 are the same or different and represent C 1 -C 20 alkyl substituents, C 2 -C 20 alkenyl substituents, C 1 -C 20 hydroxyalkyl substituents, optionally substituted C 6 -C 12 aryl substituents and/or glycol ether substituents of formula (CH 2 -CH 2 -O) n -R 5 wherein R 5 represents hydrogen or C 1 -C 5 alkyl and n represents a number between 1 and 5

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