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    34.
    发明专利
    未知

    公开(公告)号：DE19532717A1

    公开(公告)日：1997-03-06

    申请号：DE19532717

    申请日：1995-09-05

    Applicant: BASF AG

    Inventor： BAUR RICHARD DR ,  BERTLEFF WERNER DR ,  JAEGER HANS-ULRICH DR ,  FUNHOFF ANGELIKA DR ,  KRONER MATTHIAS DR ,  SCHORNICK GUNNAR DR

    IPC: C08G69/10 ,  C08G69/36 ,  C08G73/06 ,  C08G73/10 ,  C11D3/37 ,  C11D3/33 ,  C11D1/83

    Abstract: The invention concerns the use of modified polyaspartic acids as additives to washing agents and washing agents containing the modified polyaspartic acids in amounts of between 0.1 and 20 wt.%. The modified polyaspartic acids are obtained by the polycondensation of aspartic acid in the presence of: (a) 2.5 to 25 mol % amines with at least 6 carbon atoms; and (b) at least 2 wt.% phosphoric acid, phosphorous acid, hypophosphorous acid, polyphosphoric acids, phosphorus pentoxide, phosphonic acids or mixtures of said acids, in each case relative to the amount of aspartic acid used, at temperatures of at least 120 DEG C and subsequent hydrolysis with bases to give modified polyaspartic acids with a phosphorus content of between 0.5 and 10 wt.%.

    35.
    发明专利
    未知

    公开(公告)号：ES2058181T3

    公开(公告)日：1994-11-01

    申请号：ES88109085

    申请日：1988-06-08

    Applicant: BASF AG

    Inventor： BERTLEFF WERNER DR ,  FISCHER ROLF DR ,  KUMMER RUDOLF DR ,  MERGER FRANZ DR ,  SCHNEIDER HEINZ-WALTER DR

    IPC: C07B61/00 ,  C07C67/313 ,  C07C67/333 ,  C07C67/38 ,  C07C69/533 ,  C07C69/66 ,  C07C69/67 ,  C07C69/716

    Abstract: The preparation of 5-formylvaleric esters comprises the following steps… a) hydroformylation of pentenoic esters by reaction with carbon monoxide and hydrogen at elevated temperature and pressure in the presence of carbonyl complexes of metals from Group VIII of the Periodic Table with the formation of a mixture of 5-, 4- and 3-formylvaleric esters… b) separation of 5-formylvaleric esters from the mixture thus obtained of 5-, 4- and 3-formylvaleric esters, leaving a mixture substantially comprising 4- and 3-formylvaleric esters behind… c) cleavage of the mixture substantially comprising 4- and 3-formylvaleric esters to give pentenoic esters at a temperature of 50 to 400 DEG C in the presence of catalysts and… d) recycling of the pentenoic esters into step a.

    38.
    发明专利
    未知

    公开(公告)号：DE3869265D1

    公开(公告)日：1992-04-23

    申请号：DE3869265

    申请日：1988-08-04

    Applicant: BASF AG

    Inventor： HOELDERICH WOLFGANG DR ,  KOEFFER DIETER DR ,  BERTLEFF WERNER DR

    IPC: C07C41/28 ,  C07C43/15

    Abstract: Dialkoxyethenes of formula R1O-CR2:CR3-OR4 (I) are produced by cleavage of alcohols R4OH or R5OH from trialkoxyethanes of formula R1O-CHR2-CR3(OR5)-OR4 (II) in the presence of zeolites and/or phosphates and/or phosphoric or boric acid on a support material as catalysts. In the formulae, R1, R4, R5 are opt. branched alkyl or cycloalkyl; R2, R3 are alkyl or cycloalkyl as above, or H, aryl or alkenylaryl (opt. with aromatic gp. substd. with alkyl, alkoxy, Hal, etc.). 1,2-Dimethoxyethene (III) is made by cleavage of MeOH from 1,1,2-trimethoxyethane (IV) using the above, or acidic untreated metal oxides as catalysts, catalysts are pentasil-type zeolites esp. B, Fe or Al silicate zeolites or Y-type Al silicate zeolites, pref. doped with alkali, transition or rare earth metals or hydrothermally-produced phosphates of B, Al, Zr, Fe, Sr, esp. Al, Si/Al, Si/Fe/Al or B/Al phosphate or phosphoric or boric acid on a SiO2, Al2O3 or TiO2 support, or untreated acidic oxides of Ti, Zr, Si, V, W, Nb or Cr; reaction is carried out in the gas phase.

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