中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

17 records (took 0.018 seconds)

    PROCESS FOR MAKING A GRANULE
    11.
    发明公开
    PROCESS FOR MAKING A GRANULE 审中-公开

    公开(公告)号：US20230143616A1

    公开(公告)日：2023-05-11

    申请号：US17911741

    申请日：2021-03-12

    Applicant: BASF SE

    Inventor： Marta REINOSO GARCIA ,  Sylke HAREMZA ,  Tile GIESHOFF ,  Dan-Tam Daniel TANG ,  Thomas SCHMIDT ,  Michael Klemens MUELLER

    IPC: C11D11/00 ,  C11D3/33 ,  C11D3/28 ,  C11D3/37 ,  C11D3/395

    CPC classification number: C11D11/0082 ,  C11D3/33 ,  C11D3/28 ,  C11D3/3761 ,  C11D11/0023 ,  C11D3/3953

    Abstract: Process for making a powder or granule containing



    (A) at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and of iminodisuccinic acid (IDS),
    (B) at least one compound of general formula (I a) or (I b)












    wherein A1 is selected from (CH2)a wherein the variable a is in the range of from 4 to 20,
    e is selected from zero and 1, and
    R1 being the same or different and selected from O—C1-C10-alkyl and C1-C10-alkyl,

    and, optionally,




    (C) at least one homo- or copolymer of (meth)acrylic acid, partially or fully neutralized with alkali,

    said process comprising the steps of


    (a) providing an aqueous solution or slurry containing chelating agent (A) and said compound (B) and, if applicable, (co)polymer (C), with a pH value in the range of from 10 to 12,
    (b) removing most of said water by spray drying or spray granulation.

    POWDERS AND GRANULES AND PROCESS FOR MAKING SUCH POWDERS AND GRANULES
    12.
    发明申请
    POWDERS AND GRANULES AND PROCESS FOR MAKING SUCH POWDERS AND GRANULES 有权

    公开(公告)号：US20230062299A1

    公开(公告)日：2023-03-02

    申请号：US17786303

    申请日：2020-12-04

    Applicant: BASF SE

    Inventor： Markus HARTMANN ,  Michael Klemens MUELLER ,  Frank JAEKEL ,  Carsten SUELING

    IPC: C11D17/06 ,  C11D11/02 ,  C11D3/395 ,  C11D3/20 ,  C11D3/37 ,  C11D3/12 ,  C11D11/00

    Abstract: The present invention is directed towards a process for making a powder or granule containing (A) at least one alkali metal salt of citric acid, and at least one additive selected from (B) at least one (co)polymer containing carboxylic acid groups, partially neutralized with alkali, in a weight ratio of (A):(B) of from 5:1 up to 100:1, wherein said powder or granule contains at least 75% by weight of citrate (A), said process comprising the steps of (a) mixing the at least one alkali metal salt of citric acid (A) and the at least one (co)polymer (B) in the presence of water, (b) removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of at least 125° C.

    PROCESS FOR MANUFACTURING A COMPLEXING AGENT
    13.
    发明申请
    PROCESS FOR MANUFACTURING A COMPLEXING AGENT 有权

    公开(公告)号：US20210094902A1

    公开(公告)日：2021-04-01

    申请号：US16626026

    申请日：2018-06-19

    Applicant: BASF SE

    Inventor： Thomas SCHMIDT ,  Armin STAMM ,  Marta REINOSO GARCIA ,  Verena MORMUL ,  Michael Klemens MUELLER ,  Frank JAEKEL ,  Jeremy T. MANNING

    IPC: C07C227/26

    Abstract: The present invention is directed towards a process for manufacturing a complexing agent, said process comprising the steps of (a) Providing a nitrile according to general formula (I a) or (I b) (formula I a, I b) With M being selected from alkali metal and hydrogen and combinations thereof, (b) Saponification with a total alkali amount of 2.5 to 2.9 mol of alkali metal hydroxide per mole of nitrile according to general formula (I a) or (I b), respectively, and a pH value in the range of from 9.5 to 11.5 at the end of step (b), (c) Adding an amount of alkali metal hydroxide so that the total alkali content is 2.9 to 3.1 moles per mole nitrile according to general formula (I a) or (I b), respectively, and (d) Allowing further conversion. 20

    POWDERS AND GRANULES AND PROCESS FOR MAKING SUCH POWDERS AND GRANULES
    16.
    发明申请
    POWDERS AND GRANULES AND PROCESS FOR MAKING SUCH POWDERS AND GRANULES 审中-公开

    公开(公告)号：US20190119611A1

    公开(公告)日：2019-04-25

    申请号：US16309339

    申请日：2017-06-01

    Applicant: BASF SE

    Inventor： Michael Klemens MUELLER ,  Armin STAMM ,  Frank JAEKEL ,  Carsten SUELING

    IPC: C11D11/00 ,  C11D3/33 ,  C11D11/02

    Abstract: Process for making a powder or granule containing at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and glutamic acid diacetate (GLDA) and iminodisuccinic acid (IDS), said process comprising the steps of (a) introducing an aqueous solution or aqueous slurry of the respective chelating agent (A) into a spray-dryer or spray-granulator, and removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of 125 to 250° C., (b) withdrawing powder or granules, respectively, from the spray-dryer or spray-granulator, respectively, (c) separating off fmes from said powder or granules, wherein said fmes have a maximum particle diameter of 350 (d) separating off lumps from said powder or granules, wherein said lumps have a particle diameter of 1,500 μm or more, (e) milling said lumps to a maximum particle diameter of 500 μm, (f) re-introducing said fmes from step (c) and milled lumps from step (e) into the spray-dryer or spray-granulator, wherein the share of fines is in the range of from 0.5 to 20% by weight of the total chelating agent (A) withdrawn in step (b) and the share of milled lumps is in the range of from 5 to 60% by weight of the total chelating agent (A) withdrawn in step (b).

Patent Agency Ranking