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    ZEOLITE POWDER CONTAINING ALKYLHALOSILANE
    1.
    发明专利
    ZEOLITE POWDER CONTAINING ALKYLHALOSILANE 失效

    公开(公告)号：JP2000211913A

    公开(公告)日：2000-08-02

    申请号：JP2000006833

    申请日：2000-01-14

    Applicant: DEGUSSA

    Inventor： LORTZ BEATA-MARIA ,  LORTZ WOLFGANG DR ,  LEONHARDT WOLFGANG DR ,  GROSS JOACHIM ,  KLOTZ OSWIN

    IPC: C01B39/04 ,  C01B39/02 ,  C11D3/12 ,  C11D3/16

    Abstract: PROBLEM TO BE SOLVED: To obtain a powder increased in fluidity and bulk density without causing additional organic contamination of air by adding an alkylhalosilane to an aqueous suspension of a zeolite powder and drying the suspension. SOLUTION: At least one alkylhalosilane is added to an aqueous suspension of a zeolite powder, especially a filter cake obtained after precipitation and filtration of the zeolite and redispersed in water. The resultant suspension is then dried to afford a crystalline zeolite having the surface modified with the alkylhalosilane and containing the alkylhalosilane in an amount of 0.01-5 mass% based on the amount of the zeolite used. In order to use the zeolite as a detergent, a zeolite with a high Al content having sufficient calcium binding power and represented by the formula aMe2O.bAl2O3.cSiO2.dH2O [Me is Na, Na and/or K; (a)/b is 0.8-1.2; c/b is 1.8-5; d is 0-10] is preferably used.

    Zeolite granulates with good re:dispersibility and high bulk density
    3.
    发明专利
    Zeolite granulates with good re:dispersibility and high bulk density 未知

    公开(公告)号：DE19549411C2

    公开(公告)日：1999-05-12

    申请号：DE19549411

    申请日：1995-02-08

    Applicant: DEGUSSA

    Inventor： MEON WALTER DR ,  LORTZ BEATA-MARIA DR ,  LEONHARDT WOLFGANG DR

    IPC: C11D3/12 ,  C11D3/20 ,  C11D3/37

    Abstract: The following are claimed: (A) zeolite granulates comprising 51-78 (esp. 60-75) wt.% of absolutely dry zeolite and 1-20 (esp. 5-15) wt.% of sodium salts of polymeric or copolymeric carboxylic acids, the granulates have a bulk density of 600-950 g/l., a particle dia. of 300-1000 microns, a surfactant uptake capacity of 30 +/- 5 wt.% and a redispersibility of above 95 wt.%, (B) zeolite granules comprising 51-78 wt.% of absolutely dry zeolite and 1-20 wt.% of sodium citrate. The granules have a bulk density of 600-950 g/l., a particle dia. of 300-1000 microns, a surfactant uptake capacity of 30 +/- 5 wt.%, and a redispersibility of above 85 wt.%, (C) prepn. of zeolite granulates as described in (A) or (B) above, comprising causing zeolite powder or known zeolite granulates to take up drops of a sprayed suspension on their surface, to give a moist agglomerate and drying the moist agglomerate. Pref. the sprayed suspension comprises 15-40% of anhydrous zeolite, 3-40% of (co)polymeric carboxylate or citrate, 0.5-3% of stabilisers and 40-65 wt.% of water, or it comprises 15-40 wt.% of anhydrous zeolite, 3-40% of (co)polymeric carboxylate, 0-25% of soda, 0-20% of citrate, 0-20% of silicate, 0-5% of CMC, 0.5-3% of stabilisers and 40-65 wt.%.

    5.
    发明专利
    未知

    公开(公告)号：ES2057929T3

    公开(公告)日：1994-10-16

    申请号：ES92101761

    申请日：1992-02-04

    Applicant: DEGUSSA

    Inventor： LEONHARDT WOLFGANG DR ,  BERGMANN ROLAND

    IPC: C01B33/26 ,  C09K23/42 ,  C11D1/72 ,  C11D10/02 ,  C11D1/825 ,  C11D3/12 ,  C11D3/37 ,  C11D11/00

    Abstract: Aqueous suspensions of a silicate capable of binding calcium ions, containing, based on the total weight of the suspension, a) as silicate, a compound corresponding to Formula I: (Cat2/nO)x*Me2O3*(SiO2)y(I) and B) as dispersing component, a mixture of at least two oxoalcohol ethoxylates corresponding to Formula II R-(OCH2CH2)n-OH(II), wherein R=C10-C15 alkyl having a degree of branching of 0 to 90% linear and 100 to 10% single methyl branches n=3-5.25 mol ethoxy groups in Component 1 n=5.5-7.0 mol ethoxy groups in Component 2 C) a polyethylene glycol having an average molecular weight of from 200 to 2000.

    6.
    发明专利
    未知

    公开(公告)号：AT109504T

    公开(公告)日：1994-08-15

    申请号：AT92101761

    申请日：1992-02-04

    Applicant: DEGUSSA

    Inventor： LEONHARDT WOLFGANG DR ,  BERGMANN ROLAND

    IPC: C11D10/02 ,  C01B33/26 ,  C09K23/42 ,  C11D1/72 ,  C11D1/825 ,  C11D3/12 ,  C11D3/37 ,  C11D11/00

    Abstract: Aqueous suspensions of a silicate capable of binding calcium ions, containing, based on the total weight of the suspension, a) as silicate, a compound corresponding to Formula I: (Cat2/nO)x*Me2O3*(SiO2)y(I) and B) as dispersing component, a mixture of at least two oxoalcohol ethoxylates corresponding to Formula II R-(OCH2CH2)n-OH(II), wherein R=C10-C15 alkyl having a degree of branching of 0 to 90% linear and 100 to 10% single methyl branches n=3-5.25 mol ethoxy groups in Component 1 n=5.5-7.0 mol ethoxy groups in Component 2 C) a polyethylene glycol having an average molecular weight of from 200 to 2000.

    9.
    发明专利
    未知

    公开(公告)号：AT272572T

    公开(公告)日：2004-08-15

    申请号：AT01990443

    申请日：2001-11-27

    Applicant: DEGUSSA

    Inventor： SCHEIBE MICHAEL ,  TRAEUMER DIETMAR ,  KOHLEN RAINER ,  LEONHARDT WOLFGANG DR ,  KAISER LOTHAR

    IPC: C01B15/10 ,  C01D7/00

    Abstract: A process is provided for the safe storage of sodium percarbonate in a bulk container that is substantially closed to the ambient atmosphere. A temperature is measured at at least one position inside the sodium percarbonate stored in bulk and, with an increase in temperature within the range of 0.5 to 10° C. per day, in particular 1 to 5° C. per day, dry air is passed periodically or continuously through the bulk material until the increase in temperature has fallen to a value of less than 1° C. per day in particular less than 0.5° C. per day.

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