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    1.
    发明专利
    未知

    公开(公告)号：DE59105078D1

    公开(公告)日：1995-05-11

    申请号：DE59105078

    申请日：1991-05-02

    Applicant: BASF AG

    Inventor： GRAF HERMANN DR ,  STUEBINGER ADOLF DR ,  LORENZ KLAUS DR ,  SCHAFFER ORTWIN DR ,  STORK KARL DR

    IPC: C08G14/02

    Abstract: Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde can be obtained by (A) preparing a homogeneous reaction mixture in sulfuric acid from the phenolmonosulfonic acid and dihydroxydiphenyl sulfone in the molar ratio of from 3:1 to 10:1, with the proviso that the water content of the mixture is not more than 10% of the total weight of the components, and the mixture contains from 0.3 to 1.5 moles of sulfuric acid per mole of dihydroxydiphenyl sulfone, at from 100 DEG to 180 DEG C., (B) subsequently, at from 40 DEG to 90 DEG C., carrying out a precondensation with 1 to 2 moles of formaldehyde and 0.5 to 1.5 moles of urea per mole of phenol units present in aqueous medium, (C) partially neutralizing the reaction mixture, (D) adding to the partially neutralized reaction mixture 0 to 0.5 mole of phenol per mole of phenol units present and then 0.1 to 0.8 mole of formaldehyde per mole of phenol units then present, (E) further condensing at from 40 DEG to 90 DEG C., (F) shifting the pH of the reaction mixture into the neutral range and (G) subsequently acidifying with a weak acid.

    2.
    发明专利
    未知

    公开(公告)号：DE4014977A1

    公开(公告)日：1991-11-14

    申请号：DE4014977

    申请日：1990-05-10

    Applicant: BASF AG

    Inventor： GRAF HERMANN DR ,  STUEBINGER ADOLF DR ,  LORENZ KLAUS DR ,  SCHAFFER ORTWIN DR ,  STORK KARL DR

    IPC: C08G14/02

    Abstract: Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde can be obtained by (A) preparing a homogeneous reaction mixture in sulfuric acid from the phenolmonosulfonic acid and dihydroxydiphenyl sulfone in the molar ratio of from 3:1 to 10:1, with the proviso that the water content of the mixture is not more than 10% of the total weight of the components, and the mixture contains from 0.3 to 1.5 moles of sulfuric acid per mole of dihydroxydiphenyl sulfone, at from 100 DEG to 180 DEG C., (B) subsequently, at from 40 DEG to 90 DEG C., carrying out a precondensation with 1 to 2 moles of formaldehyde and 0.5 to 1.5 moles of urea per mole of phenol units present in aqueous medium, (C) partially neutralizing the reaction mixture, (D) adding to the partially neutralized reaction mixture 0 to 0.5 mole of phenol per mole of phenol units present and then 0.1 to 0.8 mole of formaldehyde per mole of phenol units then present, (E) further condensing at from 40 DEG to 90 DEG C., (F) shifting the pH of the reaction mixture into the neutral range and (G) subsequently acidifying with a weak acid.

    4.
    发明专利
    未知

    公开(公告)号：ES2070362T3

    公开(公告)日：1995-06-01

    申请号：ES91107074

    申请日：1991-05-02

    Applicant: BASF AG

    Inventor： GRAF HERMANN DR ,  STUEBINGER ADOLF DR ,  LORENZ KLAUS DR ,  SCHAFFER ORTWIN DR ,  STORK KARL DR

    IPC: C08G14/02

    Abstract: Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde can be obtained by (A) preparing a homogeneous reaction mixture in sulfuric acid from the phenolmonosulfonic acid and dihydroxydiphenyl sulfone in the molar ratio of from 3:1 to 10:1, with the proviso that the water content of the mixture is not more than 10% of the total weight of the components, and the mixture contains from 0.3 to 1.5 moles of sulfuric acid per mole of dihydroxydiphenyl sulfone, at from 100 DEG to 180 DEG C., (B) subsequently, at from 40 DEG to 90 DEG C., carrying out a precondensation with 1 to 2 moles of formaldehyde and 0.5 to 1.5 moles of urea per mole of phenol units present in aqueous medium, (C) partially neutralizing the reaction mixture, (D) adding to the partially neutralized reaction mixture 0 to 0.5 mole of phenol per mole of phenol units present and then 0.1 to 0.8 mole of formaldehyde per mole of phenol units then present, (E) further condensing at from 40 DEG to 90 DEG C., (F) shifting the pH of the reaction mixture into the neutral range and (G) subsequently acidifying with a weak acid.

    5.
    发明专利
    未知

    公开(公告)号：DE3438389A1

    公开(公告)日：1986-04-24

    申请号：DE3438389

    申请日：1984-10-19

    Applicant: BASF AG

    Inventor： DIETSCHE WOLFRAM DR ,  LORENZ KLAUS DR ,  VAMVAKARIS CHRISTOS DR ,  HETTCHE ALBERT DR

    IPC: B01D19/04 ,  C12N1/38 ,  B01D19/02 ,  C12N1/16 ,  C12N1/18 ,  C13D1/08 ,  C13D3/00

    Abstract: Foam is controlled in the sugar industry and yeast industry by a process in which oxyalkylation products of the formula I R-O-(X1)n-(X2)m-(X3)p-Z where R is alkyl of 6 to 22 carbon atoms or alkylphenyl where alkyl is of 6 to 12 carbon atoms, X1 and X3 are ethylene oxide units, n and p are each from 0 to 15 and the sum of n and p is not less than 2, the groups X2 are propylene oxide and/or butylene oxide units, m is from 0 to 15 and Z is straight-chain or branched alkyl of 1 to 4 carbon atoms, allyl or benzyl, having a turbidity point of

    7.
    发明专利
    未知

    公开(公告)号：DE3232791A1

    公开(公告)日：1984-03-08

    申请号：DE3232791

    申请日：1982-09-03

    Applicant: BASF AG

    Inventor： LORENZ KLAUS DR ,  BALZER WOLF-DIETER DR ,  WOLF HELMUT ,  TRIESELT WOLFGANG DR ,  BUSSE GERD

    IPC: C07H15/04

    Abstract: Alkylglucosides are prepared by acetalization of glucose with an equivalent amount or an excess of a C3-C5-alkanol in the presence of an acidic catalyst by a method wherein the acetalization is carried out in the presence of an alkali metal salt of a boric acid used in an amount which is equivalent to or in excess of the amount of the catalyst. The alkylglucosides obtained can be used directly, for example as solubilizers, in particular in the cosmetic sector, or can be reacted further to give higher alkylglucosides.

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