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    ACCELERATOR COMPOSITION
    4.
    发明申请
    ACCELERATOR COMPOSITION 审中-公开

    公开(公告)号：US20190263720A1

    公开(公告)日：2019-08-29

    申请号：US15753603

    申请日：2016-08-19

    Applicant: BASF SE

    Inventor： Torben GAEDT ,  Christoph HESSE

    IPC: C04B24/26 ,  C04B28/02 ,  C04B40/00

    Abstract: The invention relates to a process for producing a composition suitable as accelerator for the curing of cement, by contacting the components aa) at least one component selected from the series of hydraulic binders and/or latent hydraulic binders, and bb) at least one dispersant suitable for the dispersing of inorganic particles in water, and cc) water, the weight ratio of components aa) to cc) being between 1.5:1 and 1:70, wherein the rate ratio of components aa) to bb) is between 20:1 and 1:2. In addition, the use of the composition obtained as hardening acceleration for chemical mixtures in construction is disclosed.

    SPRAY DRYING METHOD
    6.
    发明申请
    SPRAY DRYING METHOD 审中-公开

    公开(公告)号：US20200283584A1

    公开(公告)日：2020-09-10

    申请号：US16759339

    申请日：2018-10-24

    Applicant: BASF SE

    Inventor： Torben GAEDT ,  Joachim DENGLER ,  Manfred BICHLER

    IPC: C08J3/12 ,  C04B28/02 ,  C04B28/14 ,  C04B24/38

    Abstract: The invention relates to a process for producing a pulverulent composition comprising at least one polymeric dispersant (PD) which comprises structural units having anionic and/or anionogenic groups and structural units having polyether side chains, and at least one polysaccharide (PS). The process here comprises the process steps: a) production of an aqueous dispersion having a viscosity of the dispersion of less than 10 000 mPa·s, comprising the at least one polymeric dispersant (PD) and the at least one polysaccharide (PS) and b) spray drying of the aqueous dispersion produced in process step a). Furthermore, the use of the pulverulent composition according to the invention in inorganic binder compositions, especially as a rheological additive, is disclosed.

    CALCIUM SULFATE COMPOSITION COMPRISING AN ADDITIVE
    8.
    发明申请
    CALCIUM SULFATE COMPOSITION COMPRISING AN ADDITIVE 审中-公开
    包含添加剂的硫酸钙组合物

    公开(公告)号：US20170022108A1

    公开(公告)日：2017-01-26

    申请号：US15113190

    申请日：2015-01-09

    Applicant: BASF SE

    Inventor： Torben GAEDT ,  Harald GRASSL ,  Martin WINKLBAUER ,  Oliver MAZANEC

    IPC: C04B24/26 ,  C04B28/14

    CPC classification number: C04B24/2647 ,  C04B24/2629 ,  C04B24/2658 ,  C04B24/267 ,  C04B28/14 ,  C04B2103/006 ,  C04B2103/402 ,  C04B2103/408 ,  C04B2111/60 ,  C04B2111/62 ,  C04B2103/308

    Abstract: The invention relates to a composition comprising at least 10 wt. % of a binder based on calcium sulfate and 0.005 to 5 wt. % of an additive made of at least one water-soluble salt of a multivalent metal cation, at least one compound which is capable of releasing an anion that forms a poorly soluble salt together with the multivalent metal cation, and at least one polymer dispersant which comprises anionic and/or anionogenic groups and polyether side chains. The invention further relates to a method for producing said composition and to the use thereof as a calcium sulfate flow screed, a flowable calcium sulfate filler compound, or an earth-moist calcium sulfate screed.

    Abstract translation: 本发明涉及包含至少10wt。 ％的基于硫酸钙的粘合剂和0.005-5重量％ 由多价金属阳离子的至少一种水溶性盐制成的添加剂的至少一种化合物，能够释放与多价金属阳离子一起形成难溶性盐的阴离子的至少一种化合物，以及至少一种聚合物分散剂 包括阴离子和/或阴离子基团和聚醚侧链。 本发明还涉及一种用于生产所述组合物的方法及其用途，其为硫酸钙流动熨平板，可流动的硫酸钙填充剂化合物或土壤 - 潮湿的硫酸钙洗涤剂。

    LATEX STYRENE BUTADIENE POWDERS AND ASPHALT COMPOSITION COMPRISING SAID POWDER
    9.
    发明申请
    LATEX STYRENE BUTADIENE POWDERS AND ASPHALT COMPOSITION COMPRISING SAID POWDER 有权

    公开(公告)号：US20210340337A1

    公开(公告)日：2021-11-04

    申请号：US17281085

    申请日：2019-09-25

    Applicant: BASF SE

    Inventor： Kostas S. AVRAMIDIS ,  Torben GAEDT ,  Martin WINKLBAUER ,  Christian SCHMIDTKE ,  Sophie PUTZIEN ,  Susanne SCHNEIDER

    IPC: C08J3/12 ,  C08L9/08 ,  C08L5/00 ,  C08L33/02 ,  C08L39/06 ,  C08L31/04 ,  C08L95/00

    Abstract: Provided herein are dispersible copolymer powders and asphalt compositions comprising the same. The dispersible copolymer powders comprise a core polymer having a glass transition temperature (Tg) of 40° C. or less and a shell comprising a water soluble protective colloid polymer having a Tg of 50° C. or greater. The core polymer can be derived from a vinyl aromatic monomer, a 1,3-diene monomer, and optionally one or more ethylenically-unsaturated monomers. The protective colloid polymer can be selected from a polyvinyl alcohol, a polyvinyl pyrrolidone, a polysaccharide, other water soluble polymers, or a combination thereof. Methods of preparing a styrene-butadiene modified asphalt without significantly increasing the viscosity, comprising adding the dispersible copolymer powder to an asphalt composition, wherein the addition of the copolymer polymer increases the viscosity of the asphalt by 100% or less at 135° C. within 2 hours of mixing are also described herein.

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