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公开(公告)号：DE502004003485D1
公开(公告)日：2007-05-24
申请号：DE502004003485
申请日：2004-06-02
Applicant: BASF AG
Inventor： FLORES MIGUEL ANGEL , BARTSCH MICHAEL , BAUMANN ROBERT , HADERLEIN GERD , JUNGKAMP TIM , SCHEIDEL JENS , LUYKEN HERMANN , SIEGEL WOLFGANG , MEYER CHRISTA , WIDMAIER RALF
Abstract: The invention is a process for preparing tetraalkyl-substituted biphenol which comprises reacting a 2,4- or 2,6-dialkyl substituted phenol in which the alkyl groups contain 1 to 6 carbon atoms with a peroxidase enzyme in the presence of a peroxide in an aqueous medium to yield a tetraalkyl-substituted biphenol by oxidative coupling of the 2,4- or 2,6-dialkyl substituted phenol, or yielding a tetra-alkyl substituted quinone, and reducing the quinone to obtain a tetraalkyl-substituted biphenol. The invention further includes a process for preparing a tetraaryl-substituted biphenol in which the aryl groups contain 6 to 10 carbon atoms which comprises racting a 2,4 or 2,6 diarylphenol with a peroxidase enzyme to yield a tetraaryl-substituted biphenol. A process for reducing a tetraalkyl-substituted quinone to corresponding tetraalkyl-substituted biphenol which comprises reducing the quinone with a phenol in an aqueous medium at a temperature of about 60° to 120° C. is also included.
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公开(公告)号：AR044600A1
公开(公告)日：2005-09-21
申请号：ARP040101918
申请日：2004-06-03
Applicant: BASF AG
Inventor： FLORES MIGUEL ANGEL , BARTSCH MICHAEL , BAUMANN ROBERT , HADERLEIN GERD , JUNGKAMP TIM , SCHEIDEL JENS , LUYKEN HERMANN , SIEGEL WOLFGANG , MEYER CHRISTA , WIDMAIER RALF
Abstract: Procedimiento para la preparación de un 2,2'-dihidroxi-bifenilo por asociación oxidativa de dos moléculas de fenol, que presentan en una posición "o" un átomo de hidrógeno, mediante un peróxido en presencia de agua a una temperatura en el rango entre 0° C y 100° C, caracterizado porque se realiza la preparación en presencia de un polímero insoluble en agua, que contiene: a) 0,1 a 99,9 % en peso de por lo menos un heterociclo vinílico; b) 0,1 a 10 % en peso de por lo menos un componente de reticulación difuncional; c) 0 a 99,8 % en peso de estireno o por lo menos un derivado de estireno insaturado simple o sus mezclas, en donde los datos de % en peso de los componentes individuales a), b) y c) se suman al 100 %.
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公开(公告)号：DE10325490A1
公开(公告)日：2004-12-30
申请号：DE10325490
申请日：2003-06-04
Applicant: BASF AG
Inventor： FLORES MIGUEL , BARTSCH MICHAEL , BAUMANN ROBERT , HADERLEIN GERD , JUNGKAMP TIM , SCHEIDEL JENS , LUYKEN HERMANN , SIEGEL WOLFGANG , MEYER CHRISTA , WIDMAIER RALF
Abstract: The invention is a process for preparing tetraalkyl-substituted biphenol which comprises reacting a 2,4- or 2,6-dialkyl substituted phenol in which the alkyl groups contain 1 to 6 carbon atoms with a peroxidase enzyme in the presence of a peroxide in an aqueous medium to yield a tetraalkyl-substituted biphenol by oxidative coupling of the 2,4- or 2,6-dialkyl substituted phenol, or yielding a tetra-alkyl substituted quinone, and reducing the quinone to obtain a tetraalkyl-substituted biphenol. The invention further includes a process for preparing a tetraaryl-substituted biphenol in which the aryl groups contain 6 to 10 carbon atoms which comprises racting a 2,4 or 2,6 diarylphenol with a peroxidase enzyme to yield a tetraaryl-substituted biphenol. A process for reducing a tetraalkyl-substituted quinone to corresponding tetraalkyl-substituted biphenol which comprises reducing the quinone with a phenol in an aqueous medium at a temperature of about 60° to 120° C. is also included.
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公开(公告)号：AT359254T
公开(公告)日：2007-05-15
申请号：AT04739502
申请日：2004-06-02
Applicant: BASF AG
Inventor： FLORES MIGUEL ANGEL , BARTSCH MICHAEL , BAUMANN ROBERT , HADERLEIN GERD , JUNGKAMP TIM , SCHEIDEL JENS , LUYKEN HERMANN , SIEGEL WOLFGANG , MEYER CHRISTA , WIDMAIER RALF
Abstract: The invention is a process for preparing tetraalkyl-substituted biphenol which comprises reacting a 2,4- or 2,6-dialkyl substituted phenol in which the alkyl groups contain 1 to 6 carbon atoms with a peroxidase enzyme in the presence of a peroxide in an aqueous medium to yield a tetraalkyl-substituted biphenol by oxidative coupling of the 2,4- or 2,6-dialkyl substituted phenol, or yielding a tetra-alkyl substituted quinone, and reducing the quinone to obtain a tetraalkyl-substituted biphenol. The invention further includes a process for preparing a tetraaryl-substituted biphenol in which the aryl groups contain 6 to 10 carbon atoms which comprises racting a 2,4 or 2,6 diarylphenol with a peroxidase enzyme to yield a tetraaryl-substituted biphenol. A process for reducing a tetraalkyl-substituted quinone to corresponding tetraalkyl-substituted biphenol which comprises reducing the quinone with a phenol in an aqueous medium at a temperature of about 60° to 120° C. is also included.
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