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    METHOD FOR PRODUCING SODIUM DITHIONITE
    2.
    发明申请
    METHOD FOR PRODUCING SODIUM DITHIONITE 审中-公开
    用于生产钠

    公开(公告)号：WO2006048293A3

    公开(公告)日：2007-02-15

    申请号：PCT/EP2005011786

    申请日：2005-11-03

    Applicant: BASF AG ,  DIEFENBACHER ARMIN ,  VOSS HARTWIG ,  SCHNEIDER REINHARD

    Inventor： DIEFENBACHER ARMIN ,  VOSS HARTWIG ,  SCHNEIDER REINHARD

    IPC: C01B17/66

    CPC classification number: C01B17/66

    Abstract: The invention relates to a method for producing sodium dithionite comprising the steps (a) production of a synthesis batch consisting of sodium formate, sulphur dioxide and an alkaline sodium compound in an aqueous methanol solvent, which forms a sodium dithionite mother liquor, (b) separation of the sodium dithionite from the sodium dithionite mother liquor, leaving a residual mother liquor, (c) separation of methanol from the residual mother liquor, (d) separation of the residual mother liquor into a first sub-stream that is rich in thiosulphate and a second sub-stream that is devoid of thiosulphate, but contains formate by means of a nanofiltration, (e) concentration of sodium formate in the second sub-stream and (f) return of the concentrated second sub-stream to step (a).

    Abstract translation: 本发明涉及一种方法，用于生产亚硫酸氢钠，其包括（a）的创建从甲酸钠，二氧化硫和在下形成连二亚硫酸钠母液的含水甲醇溶液中的碱性钠化合物的合成方法的步骤，（b）由连二亚硫酸钠中分离钠 母液，其中的残留母液得到的，（c）从所述残留母液中分离甲醇，（d）分离在thiosulfatreichen第一部分流的残余母液和硫代硫酸盐，甲酸盐第二部分气流通过纳滤，（e）的浓度 钠第二部分流中和（f）回收浓缩第二部分流的过程中步骤（a）。

    AGGLOMERATED POLYMER PARTICLES PRODUCED FROM FINELY DIVIDED WATER-SOLUBLE OR WATER-SWELLABLE POLYMERISATES
    4.
    发明专利
    AGGLOMERATED POLYMER PARTICLES PRODUCED FROM FINELY DIVIDED WATER-SOLUBLE OR WATER-SWELLABLE POLYMERISATES 未知

    公开(公告)号：CA2085481A1

    公开(公告)日：1992-08-10

    申请号：CA2085481

    申请日：1992-02-03

    Applicant: BASF AG

    Inventor： SCHNEIDER REINHARD ,  GRUND NORBERT ,  HARTMANN HEINRICH

    IPC: C02F1/52 ,  C02F1/54 ,  C02F1/56 ,  C08F2/32 ,  C08J3/12 ,  C08J3/16 ,  C09B67/38 ,  C09B67/46 ,  C09K3/00 ,  D06P1/52

    Abstract: 2085481 9213912 PCTABS00014 Described are agglomerated polymer particles produced from finely divided water-soluble or water-swellable polymerisates and a method of producing such particles by the removal of water from azeotropic water-in-oil emulsions of water-soluble or water-swellable polymerisates in the presence of 1-40 % by wt., relative to the polymers, of poly(alkylene glycol) compounds (a) obtained by the addition reaction of C2-C4 alkylene oxides with alcohols, phenols, amines or carboxylic acids and (b) containing at least two alkylene oxide units in the polymer structure. The agglomerated polymer particles thus produced are subsequently isolated. The water-soluble agglomerated polymer particles may be used as flocculation, retention and water-removal agents, while the water-swellable polymer powder may be used as a thickening agent for aqueous systems, in particular for textile-printing pastes.

    METHOD FOR THE PRODUCTION OF PRECIPITATED CALCIUM CARBONATE WITH A HIGH DEGREE OF BRIGHTNESS
    5.
    发明专利
    METHOD FOR THE PRODUCTION OF PRECIPITATED CALCIUM CARBONATE WITH A HIGH DEGREE OF BRIGHTNESS 未知

    公开(公告)号：CA2478670C

    公开(公告)日：2010-05-18

    申请号：CA2478670

    申请日：2003-03-11

    Applicant: BASF AG

    Inventor： MISSKE ANDREA ,  SCHNEIDER REINHARD

    IPC: C09C1/02 ,  C01F11/18

    Abstract: Disclosed is calcium carbonate with a high degree of brightness, which is produced by treating calcium carbonate, and/or the milk of lime used for the production thereof by reacting milk of lime with carbon dioxide, and/or at least one of the calcium-containing intermediate products used for the production of milk of lime, with a bleaching agent before, during, and/or following said reaction. Said bleaching agent contains at least one compound of formula A[(CR1R2)SOpM(1/q)]r (I), in which A represents NR3R4, NR3, N, or OH; R1, R2, R3, R4 independently represent hydrogen or an organic radical; M represents ammonium or a metal; p represents 2 or 3; q represents the valence of M; and r represents 1 if A=OH or NR3R4, 2 if A=NR3, and 3 if A=N. Said variables are independently selected for each individual compound and/or each [(CR1R2)SOpM(1/q)] group if a mixture of compounds is used and/or if r=2 or 3.

    6.
    发明专利
    未知

    公开(公告)号：DE50301104D1

    公开(公告)日：2005-10-06

    申请号：DE50301104

    申请日：2003-03-11

    Applicant: BASF AG

    Inventor： MISSKE ANDREA ,  SCHNEIDER REINHARD

    IPC: C01F11/18 ,  C09C1/02

    Abstract: Calcium carbonate with high brightness is prepared by treating calcium carbonate and/or the milk of lime used for its preparation by reacting milk of lime with carbon dioxide and/or at least one of the calcium-containing preliminary products used for the preparation of the milk of lime before, during and/or after this reaction with a bleaching agent which comprises at least one compound of the formula (I): A[(CR 1 R 2 )SO p M (1/q) ] r (I) where the variables have the following meanings: A is NR 3 R 4 , NR 3 , N or OH; R 1 , R 2 , R 3 , R 4 independently of one another, are hydrogen or an organic radical; M is ammonium or metal p is 2 or 3; q is the valency of M; and r is 1 when A = OH or NR 3 R 4 , is 2 when A = NR 3 and is 3 when A = N; and where variables, if a mixture of compounds is used and/or r=2 or 3, are chosen independently of one another for each individual compound and/or for each [(CR 1 R 2 )SO p M (1/q) ] group.

    7.
    发明专利
    未知

    公开(公告)号：BR0308121A

    公开(公告)日：2005-01-04

    申请号：BR0308121

    申请日：2003-03-11

    Applicant: BASF AG

    Inventor： MISSKE ANDREA ,  SCHNEIDER REINHARD

    IPC: C01F11/18 ,  C09C1/02

    Abstract: Calcium carbonate with high brightness is prepared by treating calcium carbonate and/or the milk of lime used for its preparation by reacting milk of lime with carbon dioxide and/or at least one of the calcium-containing preliminary products used for the preparation of the milk of lime before, during and/or after this reaction with a bleaching agent which comprises at least one compound of the formula (I): A[(CR 1 R 2 )SO p M (1/q) ] r (I) where the variables have the following meanings: A is NR 3 R 4 , NR 3 , N or OH; R 1 , R 2 , R 3 , R 4 independently of one another, are hydrogen or an organic radical; M is ammonium or metal p is 2 or 3; q is the valency of M; and r is 1 when A = OH or NR 3 R 4 , is 2 when A = NR 3 and is 3 when A = N; and where variables, if a mixture of compounds is used and/or r=2 or 3, are chosen independently of one another for each individual compound and/or for each [(CR 1 R 2 )SO p M (1/q) ] group.

    METHOD FOR THE PRODUCTION OF PRECIPITATED CALCIUM CARBONATE WITH A HIGH DEGREE OF BRIGHTNESS
    8.
    发明专利
    METHOD FOR THE PRODUCTION OF PRECIPITATED CALCIUM CARBONATE WITH A HIGH DEGREE OF BRIGHTNESS 未知

    公开(公告)号：CA2478670A1

    公开(公告)日：2003-09-18

    申请号：CA2478670

    申请日：2003-03-11

    Applicant: BASF AG

    Inventor： SCHNEIDER REINHARD ,  MISSKE ANDREA

    IPC: C01F11/18 ,  C09C1/02

    Abstract: Disclosed is calcium carbonate with a high degree of brightness, which is produced by treating calcium carbonate, and/or the milk of lime used for the production thereof by reacting milk of lime with carbon dioxide, and/or at least one of the calcium-containing intermediate products used for the production of milk of lime, with a bleaching agent before, during, and/or following said reaction. Said bleaching agent contains at least one compound of formula A[(CR1R2)SOpM(1/q)]r (I), in which A represents NR3R4, NR3, N, or OH; R1, R2, R3, R4 independently represent hydrogen or an organic radical; M represents ammonium or a metal; p represents 2 or 3; q represents the valenc e of M; and r represents 1 if A=OH or NR3R4, 2 if A=NR3, and 3 if A=N. Said variables are independently selected for each individual compound and/or eac h [(CR1R2)SOpM(1/q)] group if a mixture of compounds is used and/or if r=2 or 3.

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