72.
    发明专利
    未知

    公开(公告)号:AT395320T

    公开(公告)日:2008-05-15

    申请号:AT02787574

    申请日:2002-11-05

    Applicant: BASF SE

    Abstract: In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of >=65% by weight, the mean molar mass {overscore (M of the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: ( M _ g ⁢ / ⁢ mol ) = 48 + 6.589 . 10 - 1 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) + 4.725 . 10 2 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 2 - 3.434 . 10 - 3 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 3 + ⁢ 9.625 . 10 - 5 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 4 - 1.172 . 10 6 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 5 + 5.357 . 10 - 9 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 6 ( I ) where: {overscore (M is the mean molar mass, and x is the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in % by weight (total formaldehyde concentration).

    73.
    发明专利
    未知

    公开(公告)号:AT390408T

    公开(公告)日:2008-04-15

    申请号:AT05027315

    申请日:2005-12-14

    Applicant: BASF SE

    Abstract: Preparing sulfur-containing compounds comprises reacting a mixed gas stream comprising hydrogen sulfide, optionally with oxygen, with linear or branched 1-30C olefins and carrying out the reaction in the presence of water and carbon dioxide at a pressure of 2-325 bar. Preparing sulfur-containing compounds of formula R 1>-Q-R 2> comprises reacting a mixed gas stream comprising hydrogen sulfide, optionally with oxygen, with linear or branched 1-30C olefins and carrying out the reaction in the presence of water and carbon dioxide at a pressure of 2-325 bar. Q : -S- or -S-S-; R 1>, R 2>H or optionally saturated, linear or branched 1-30C alkyl. R 1> and R 2> are not simultaneously H.

    Procedimiento para la preparación de isocianatos

    公开(公告)号:ES2558857T3

    公开(公告)日:2016-02-09

    申请号:ES12172693

    申请日:2007-12-12

    Applicant: BASF SE

    Abstract: Procedimiento para la preparación de diisocianatos mediante reacción de las correspondientes diaminas con fosgeno en exceso estequiométrico de fosgeno en al menos una zona de reacción, en el que se seleccionan las condiciones de reacción de modo que en estas condiciones al menos los componentes de reacción diamina, diisocianato y fosgeno estén en forma gaseosa, y en el que se alimenta a la zona de reacción al menos un flujo de gas que contiene diamina y al menos un flujo de gas que contiene fosgeno, en el que la fracción en masa de bromo en el flujo que contiene fosgeno asciende a menos de 50 ppm en peso.

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