METHOD OF PRODUCING PIGMENT SUSPENSIONS
    1.
    发明申请
    METHOD OF PRODUCING PIGMENT SUSPENSIONS 审中-公开
    生产色素悬浮液的方法

    公开(公告)号:WO2008122695A1

    公开(公告)日:2008-10-16

    申请号:PCT/FI2008/050166

    申请日:2008-04-04

    Abstract: A method of producing a stable aqueous dispersion of a latex, solid particles and a dispersing agent, comprising contacting the latex with an anionic dispersing agent to form a modified latex, feeding the modified latex and the solid particles to a zone of high shear forces, and simultaneously subjecting essentially all of the modified latex and the solid particles fed to said zone to high shear forces to form a latex-particle slurry. By means of the invention, over 60 wt-% of the latex can be adsorbed on the solids. Latex immobilization increases the surface strength of final coating layer and allows for a decrease of latex consumption in paper and cardboard and paint applications.

    Abstract translation: 一种制备胶乳,固体颗粒和分散剂的稳定水性分散体的方法,包括使胶乳与阴离子分散剂接触以形成改性胶乳,将改性胶乳和固体颗粒进料到高剪切力区域, 并同时对进料到所述区域的基本上所有的改性胶乳和固体颗粒进行高剪切力以形成胶乳颗粒浆料。 通过本发明,超过60重量%的胶乳可以被吸附在固体上。 乳胶固定增加了最终涂层的表面强度,并允许降低纸和纸板和油漆应用中胶乳的消耗。

    A METHOD AND REACTOR FOR IN-LINE PRODUCTION OF CALCIUM CARBONATE INTO THE PRODUCTION PROCESS OF A FIBROUS WEB
    4.
    发明申请
    A METHOD AND REACTOR FOR IN-LINE PRODUCTION OF CALCIUM CARBONATE INTO THE PRODUCTION PROCESS OF A FIBROUS WEB 审中-公开
    将碳酸钙直接生产到纤维网的生产过程中的方法和反应器

    公开(公告)号:WO2011110744A2

    公开(公告)日:2011-09-15

    申请号:PCT/FI2011050203

    申请日:2011-03-09

    CPC classification number: D21H17/70 D21H17/675

    Abstract: The present invention relates to a method of and reactor for in-line production of calcium carbonate into a target suspension flow. The method and reactor according to the invention are suitable for introducing and mixing lime milk and carbon dioxide into a target suspension flow so that the calcium carbonate crystals formed during their reaction are not allowed to precipitate onto the walls (12) of the reactor (10), because the reactor is provided with means (16, 18, 20) for preventing the carbonate crystals from attaching to the surfaces of the structures located in the reaction zone.

    Abstract translation: 本发明涉及将碳酸钙直接生产成目标悬浮液流的方法和反应器。 根据本发明的方法和反应器适用于将石灰乳和二氧化碳引入和混合到目标悬浮液流中,使得在其反应期间形成的碳酸钙晶体不允许沉淀到反应器(10)的壁(12)上 ),因为反应器设置有用于防止碳酸盐晶体附着到位于反应区域中的结构表面的装置(16,18,20)。

    5.
    发明专利
    未知

    公开(公告)号:FI20070983A

    公开(公告)日:2009-06-15

    申请号:FI20070983

    申请日:2007-12-14

    Applicant: IMPPOLA OLAVI

    Abstract: A method and an apparatus for producing precipitated calcium carbonate (PCC). Interesting and at the same time surprising is the very small size of the continuous carbonation reactor and very fast reaction speed in it. All these together and alone reduce investment and production costs of this carbonation process. This achievement is reached by maximizing mass transfer speed from gas phase (carbon dioxide) to liquid phase and from solid phase (calcium hydroxide) to liquid phase. In this innovation the fast mass transfer is made by pulsating high shear forces and ultra sound at high pressure in a rotor-stator system. Surprisingly it was seen in the test runs that 100 % conversion was achieved in this continuous process in less than 5 seconds when in the conventional batch processes the reaction can take several hours and even in the most advanced continuous reactors several minutes.

    6.
    发明专利
    未知

    公开(公告)号:FI20070983A0

    公开(公告)日:2007-12-14

    申请号:FI20070983

    申请日:2007-12-14

    Applicant: IMPPOLA OLAVI

    Abstract: A method and an apparatus for producing precipitated calcium carbonate (PCC). Interesting and at the same time surprising is the very small size of the continuous carbonation reactor and very fast reaction speed in it. All these together and alone reduce investment and production costs of this carbonation process. This achievement is reached by maximizing mass transfer speed from gas phase (carbon dioxide) to liquid phase and from solid phase (calcium hydroxide) to liquid phase. In this innovation the fast mass transfer is made by pulsating high shear forces and ultra sound at high pressure in a rotor-stator system. Surprisingly it was seen in the test runs that 100 % conversion was achieved in this continuous process in less than 5 seconds when in the conventional batch processes the reaction can take several hours and even in the most advanced continuous reactors several minutes.

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