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    METHODS OF PREPARATION AND UTILIZATION OF BAUXITIC KAOLINS
    3.
    发明申请
    METHODS OF PREPARATION AND UTILIZATION OF BAUXITIC KAOLINS 审中-公开

    公开(公告)号：WO2019246082A1

    公开(公告)日：2019-12-26

    申请号：PCT/US2019/037710

    申请日：2019-06-18

    申请人： BASF CORPORATION

    发明人： YILDIRIM, Ismail ,  RAY, Amy ,  MATHUR, Sharad ,  KHOKHANI, Ashok ,  GODFREY, James ,  MUMFORD, Randy

    IPC分类号： B01J20/08

    摘要： Bauxitic kaolins, compositions comprising the same, and methods of making and using the bauxitic kaolins are disclosed herein. The bauxitic kaolins can have an Al 2 O 3 content of greater than 50% to 85% by weight (on a calcined basis), a loss on ignition of at least 17% by weight, and a surface area of at least 100 m 2 /g, as determined by a Micrometrics Gemini 2370 surface area analyzer. The bauxitic kaolins can be used in various applications depending on their average particle size and/or particle size distribution as well as other desired properties. In some embodiments, the bauxitic kaolin can be used as a flame retardant filler in applications such as carpets and plastics or as an adsorbent.

    SURFACE MODIFIED KAOLIN PIGMENT AND METHOD THEREOF
    5.
    发明申请
    SURFACE MODIFIED KAOLIN PIGMENT AND METHOD THEREOF 审中-公开

    公开(公告)号：WO2021003182A1

    公开(公告)日：2021-01-07

    申请号：PCT/US2020/040343

    申请日：2020-06-30

    申请人： BASF CORPORATION

    发明人： KAMAU, Wilson Wanene ,  MATHUR, Sharad ,  KHOKHANI, Ashok ,  GODFREY, James Robert

    IPC分类号： C08K3/013 ,  C09C1/02 ,  C09C1/30 ,  C09C1/40 ,  C09D7/62 ,  C09C1/42 ,  C09C3/00 ,  C09C3/08 ,  C09C3/10 ,  C09C3/12

    摘要： Provided herein are surface treated pigments and methods of making and using the surface treated pigments. The surface treated pigments can comprise a mineral pigment surface treated with a hydrophilic latex composition and a hydrophobic material, which produce a film on an outer surface of the pigment. The hydrophobic material can be selected from a silane, a siloxane, or a siloxane/silicone resin blend, wax, fatty acid, styrene-butadiene latex, or a mixture thereof. The hydrophilic latex composition can be selected from a straight (meth)acrylic latex emulsion, a styrene-(meth)acrylic latex emulsion, or a blend thereof. The surface treated pigment has a surface energy that is less than a surface energy of the mineral pigment alone, a water contact angle of at least 90° and a dodecane contact angle of less than 150°.

    CALCINED KAOLIN AS EXTENDER FOR COATINGS
    6.
    发明申请
    CALCINED KAOLIN AS EXTENDER FOR COATINGS 审中-公开

    公开(公告)号：WO2019144114A1

    公开(公告)日：2019-07-25

    申请号：PCT/US2019/014532

    申请日：2019-01-22

    申请人： BASF CORPORATION

    发明人： YILDIRIM, Ismail ,  KHOKHANI, Ashok ,  WILLIAMS, Danny ,  MUDD, Bryan

    IPC分类号： C09C1/42 ,  C09D7/00 ,  C08K3/34 ,  D21H19/40 ,  C09C1/40

    摘要： Calcined kaolin comprising a narrow particle size distribution and a fluxing agent are disclosed herein. In some examples, the calcined kaolin comprises particles, wherein 90% by weight or less of the particles have a diameter of less than 10 microns; 80% by weight or less of the particles have a diameter of less than 5 microns; 40% by weight or less of the particles have a diameter of less than 2 microns; and 20% by weight or less of the particles have a diameter of less than 1 micron. The calcined kaolin exhibits improved brightness, whiteness, particle size distribution, mullite index, and +325 mesh residue level compared to conventional calcined kaolin. Methods of making and using the calcined kaolin particles are also provided herein.