4.
    发明专利
    未知

    公开(公告)号:ES2180064T3

    公开(公告)日:2003-02-01

    申请号:ES97937551

    申请日:1997-08-05

    Applicant: BASF AG

    Abstract: A particulate polymer P having an average particle diameter d50 of from 0.1 to 50 mum is prepared by a process in which an emulsion E is prepared fromone or more monomers M, which are polymerizable by free radical polymerization to give the polymer P,water, andat least one protective colloid PCby the action of high shear forces, and the emulsion E is subjected to polymerization in a reactor with the use of a free radical polymerization initiator RI wherein, based on the emulsion E, not more than 75% by weight of the emulsion E (initially taken portion of E) are initially taken in the reactor at the beginning of the polymerization and at least 25% by weight of the emulsion E (feed portion of E) are not fed to the reactor until after the beginning of the polymerization.

    Process for producing a particulate polymer

    公开(公告)号:AU4013997A

    公开(公告)日:1998-03-06

    申请号:AU4013997

    申请日:1997-08-05

    Applicant: BASF AG

    Abstract: A particulate polymer P having an average particle diameter d50 of from 0.1 to 50 mum is prepared by a process in which an emulsion E is prepared fromone or more monomers M, which are polymerizable by free radical polymerization to give the polymer P,water, andat least one protective colloid PCby the action of high shear forces, and the emulsion E is subjected to polymerization in a reactor with the use of a free radical polymerization initiator RI wherein, based on the emulsion E, not more than 75% by weight of the emulsion E (initially taken portion of E) are initially taken in the reactor at the beginning of the polymerization and at least 25% by weight of the emulsion E (feed portion of E) are not fed to the reactor until after the beginning of the polymerization.

    6.
    发明专利
    未知

    公开(公告)号:ID18061A

    公开(公告)日:1998-02-26

    申请号:ID972916

    申请日:1997-08-20

    Applicant: BASF AG

    Abstract: A particulate polymer P having an average particle diameter d50 of from 0.1 to 50 mum is prepared by a process in which an emulsion E is prepared fromone or more monomers M, which are polymerizable by free radical polymerization to give the polymer P,water, andat least one protective colloid PCby the action of high shear forces, and the emulsion E is subjected to polymerization in a reactor with the use of a free radical polymerization initiator RI wherein, based on the emulsion E, not more than 75% by weight of the emulsion E (initially taken portion of E) are initially taken in the reactor at the beginning of the polymerization and at least 25% by weight of the emulsion E (feed portion of E) are not fed to the reactor until after the beginning of the polymerization.

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