Preparation of phosphoric acid
    1.
    发明授权

    公开(公告)号:US11702338B2

    公开(公告)日:2023-07-18

    申请号:US16762751

    申请日:2018-11-09

    Applicant: Coatex OCP SA

    CPC classification number: C01B25/222 C01B25/22 C08F20/06 C08K2003/329

    Abstract: The invention relates to a method for the industrial preparation of phosphoric acid from an aqueous suspension comprising water and particles of at least one phosphate material dispersed in the presence of at least one additive of the anionic polymer type. Phosphoric acid is obtained by treating this suspension with at least one strong acid. The polymer is obtained by polymerization reaction of at least one acid selected from acrylic acid, methacrylic acid and salts thereof.
    The invention relates to the use of this anionic polymer as well as the method for improving the rheology of the suspension and the hydrodynamics of the reaction medium in which the reactions for the manufacture of phosphoric acid take place.

    METHOD FOR POLYMERISATION OF (METH)ACRYLIC ACID IN SOLUTION, POLYMER SOLUTIONS OBTAINED AND THEIR USES
    4.
    发明申请
    METHOD FOR POLYMERISATION OF (METH)ACRYLIC ACID IN SOLUTION, POLYMER SOLUTIONS OBTAINED AND THEIR USES 有权
    溶液中(甲基)丙烯酸的聚合方法,获得的聚合物溶液及其用途

    公开(公告)号:US20140088250A1

    公开(公告)日:2014-03-27

    申请号:US14037622

    申请日:2013-09-26

    Applicant: COATEX

    CPC classification number: C08L33/02 C08F2/38 C08F20/06 C08L33/10

    Abstract: The present invention relates to a new solvent-free preparation method of a (meth)acrylic acid polymer in solution, where said polymer has a molecular weight less than 8,000 g/mol and a polydispersity IP index between 2 and 3 by radical polymerisation, the polymers obtained by this means, and their applications in industry.

    Abstract translation: 本发明涉及溶液中的(甲基)丙烯酸聚合物的新的无溶剂制备方法,其中所述聚合物具有小于8,000g / mol的分子量和通过自由基聚合在2和3之间的多分散性IP指数, 通过这种方式获得的聚合物及其在工业中的应用。

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