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    ACRYLATE COPOLYMERS FOR REDUCING SCALE FORMATION
    1.
    发明申请
    ACRYLATE COPOLYMERS FOR REDUCING SCALE FORMATION 审中-公开

    公开(公告)号：WO2022049702A1

    公开(公告)日：2022-03-10

    申请号：PCT/JP2020/033464

    申请日：2020-09-03

    Applicant: KURITA WATER INDUSTRIES LTD.

    Inventor： WOLF Florian ,  HATER Wolfgang ,  DISCI-ZAYED Duygu ,  LEANEY Deborah ,  STRATMANN Anika

    IPC: C02F5/10 ,  C02F103/08 ,  C02F103/02

    Abstract: The present invention relates to the use of copolymers of acrylic acid and C1-C3 alkyl acrylates with an Mw of from 5200 to 20000 g/mol, calculated as its sodium salt, for reducing the formation of inorganic scale in water-bearing systems. The acrylate content in the copolymer is from 3 to 50 mol-%, and at least 50 mol-% of the polymerized C1-C3 alkyl acrylate units are polymerized units of a C2-C3 alkyl acrylate. The invention also relates to a method for reducing the formation of inorganic scale in a water-bearing system comprising adding such a copolymer to the water contained in the water bearing system.

    Copolymers suitable for reducing the formation of magnesium hydroxide containing scale
    4.
    发明申请
    Copolymers suitable for reducing the formation of magnesium hydroxide containing scale 审中-公开

    公开(公告)号：WO2021117134A1

    公开(公告)日：2021-06-17

    申请号：PCT/JP2019/048292

    申请日：2019-12-10

    Applicant: KURITA WATER INDUSTRIES LTD.

    Inventor： WOLF Florian ,  HATER Wolfgang ,  DISCI-ZAYED Duygu ,  LEANEY Deborah ,  STRATMANN Anika

    IPC: C02F5/10 ,  C02F103/08 ,  C02F103/18

    Abstract: The invention relates to the use of a copolymer, which consists of at least 95% by weight, based on the total weight of the copolymer in its acid form, of a combination of polymerized units of acrylic acid and polymerized units of a C1-C3 alkyl acrylate, where the amount of polymerized units of the C1-C3 alkyl acrylate is in the range from 3 to 30% by weight, based on the total weight of the copolymer in its acid form, and where the copolymer in the form of its sodium salt has a weight average molecular weight Mw in the range from 500 to 4000 g/mol, as determined by gel permeation chromatography, for reducing the formation of magnesium hydroxide containing scale. The invention also relates to a method for reducing the formation of magnesium hydroxide containing scale in a water-treatment unit for processing Mg containing water, which comprises the addition of a copolymer as defined herein to the Mg containing water to be treated in the water-treatment unit.

    AQUEOUS OIL-IN-WATER EMULSIONS OF ORGANIC AMINES
    6.
    发明申请
    AQUEOUS OIL-IN-WATER EMULSIONS OF ORGANIC AMINES 审中-公开
    有机胺水基水包油乳液

    公开(公告)号：WO2017221700A1

    公开(公告)日：2017-12-28

    申请号：PCT/JP2017/021095

    申请日：2017-06-07

    Applicant: KURITA WATER INDUSTRIES LTD.

    Inventor： JASPER, Julia ,  ZIMMER, Kirstin ,  DE BACHE, Andre ,  HATER, Wolfgang

    IPC: B01J13/00 ,  C23F11/14 ,  F22B37/52

    Abstract: The present invention relates to aqueous oil-in-water emulsion containing: a) an oil phase comprising at least one organic amine of the formula (I) R 1 -(NH-R 2 ) n -NH 2 (I) wherein n is an integer from 0 to 7, in particular 0, 1 or 2, R 1 is a linear or branched, acyclic hydrocarbon group having 12 to 22 carbon atoms; R 2 is C 2 -C 4 -alkanediyl; b) and water, wherein the amount of amines of formula (I) with n being 1 or 2 is at least 90 % by weight, based on the total amount of amines of the formula (I) contained in the oil phase. The invention also relates to the use of these emulsions as a corrosion inhibitor in water-bearing systems.

    Abstract translation: 本发明涉及水包油型乳液，其包含：a）包含至少一种式（I）的有机胺的油相R 1 - （ NH-R 2）n -NH 2（I）其中n是0-7的整数，特别是0,1或2 R 1是具有12-22个碳原子的直链或支链无环烃基; R 2是C 2 -C 4正链烷二基; b）和水，其中基于包含在油相中的式（I）的胺的总量，n为1或2的式（I）的胺的量为至少90重量％。 本发明还涉及这些乳液在含水系统中作为缓蚀剂的用途。

    VERWENDUNG VON ZIRKONIUM-HALTIGEN ADDITIVZUSAMMENSETZUNGEN
    7.
    发明申请
    VERWENDUNG VON ZIRKONIUM-HALTIGEN ADDITIVZUSAMMENSETZUNGEN 审中-公开
    USE锆含添加剂组合物

    公开(公告)号：WO2015104371A1

    公开(公告)日：2015-07-16

    申请号：PCT/EP2015/050330

    申请日：2015-01-09

    Applicant: KURITA WATER INDUSTRIES LTD.

    Inventor： WANG, Rongbiao ,  STEIN, Jochen ,  LUNKENHEIMER, Rudolf ,  NEUMANN, Michael

    IPC: D21H17/28 ,  C08L3/02 ,  D21H19/34 ,  D21H19/54 ,  D21H19/64 ,  D21H17/67 ,  D21H21/16

    CPC classification number: D21H19/54 ,  C09J11/04 ,  C09J103/02 ,  D21H17/28 ,  D21H17/675 ,  D21H19/34 ,  D21H19/64 ,  D21H21/16

    Abstract: Die vorliegende Erfindung betrifft die Verwendung einer Additivzusammensetzung in Form einer wässrigen Lösung oder Dispersion mit einem Feststoffgehalt im Bereich von 5 bis 75 Gew.-% bezogen auf das Gesamtgewicht der Additivzusammensetzung, erhältlich nach einem Verfahren umfassend das Vermischen der Bestandteile a) und b) in einem wässrigen Medium, wobei a) ausgewählt ist unter Natriumzirkoniumcarbonat, Kaliumzirkoniumcarbonat, Ammoniumzirkoniumcarbonat und deren Gemischen, b) ausgewählt ist unter wenigstens einem ortho-Phosphat, wenigstens einem kondensierten Phosphat, deren Säuren und Gemischen als Additiv in Stärkeleim.

    Abstract translation: 本发明涉及在具有在5的范围内的固体含量的水溶液或分散体的形式使用的添加剂组合物的以75重量％，基于所述添加剂组合物通过包括混合组分一个的方法获得的总重量计）和b）中 水性介质中，其特征在于，a）选自Natriumzirkoniumcarbonat，Kaliumzirkoniumcarbonat，碳酸锆铵，和它们的混合物，b被选中）从至少一个正磷酸盐，至少一种缩合磷酸盐，它们的酸，以及它们的混合物如在淀粉的添加剂。

    DRUG COMPOSITION
    8.
    发明申请
    DRUG COMPOSITION 审中-公开
    药物组合物

    公开(公告)号：WO1990004980A1

    公开(公告)日：1990-05-17

    申请号：PCT/JP1989001152

    申请日：1989-11-10

    Applicant: KURITA WATER INDUSTRIES, LTD. ,  HASHIMOTO, Masanori ,  OTAGIRI, Masaki ,  IMAI, Teruko

    Inventor： KURITA WATER INDUSTRIES, LTD.

    IPC: A61K47/36

    CPC classification number: A61K31/19 ,  A61K9/146

    Abstract: A drug composition of the invention contains 0.2 to 10 parts by weight of a low molecular weight chitosan per part of a difficultly soluble drug. This drug composition is improved in the solubility of the difficultly soluble drug in water and the dissolution rate of the drug into water. As the low molecular weight chitosan, water-soluble chitosan having a weight-average molecular weight of 500 to 50 x 103 is used. This drug composition is prepared by mixing the low molecular weight chitosan with a difficultly soluble drug in such a manner that the chitosan is homogeneously dispersed in the drug. The drug composition can be utilized either as such in granular form or in various forms according to various preparatory methods as medicines and other drug compositions containing a difficultly soluble drug which can be absorbed in the living organism readily in an increased amount.

    ANIONIC COPOLYMERS SUITABLE AS SCALING INHIBITORS
    10.
    发明申请
    ANIONIC COPOLYMERS SUITABLE AS SCALING INHIBITORS 审中-公开

    公开(公告)号：WO2021106148A1

    公开(公告)日：2021-06-03

    申请号：PCT/JP2019/046588

    申请日：2019-11-28

    Applicant: KURITA WATER INDUSTRIES LTD.

    Inventor： MATHEIS Jurgen ,  WOLF Florian ,  HATER Wolfgang

    IPC: C02F5/00 ,  C02F5/12 ,  C02F5/14

    Abstract: The present invention relates to anionic copolymers, which are suitable as scaling inhibitors in water bearing systems, in particular as inhibitors for the formation of antimony(III) sulfide-containing scale. The present invention also relates to a method for reducing scaling in water bearing systems, in particular in water loops of geothermal power plants, in which the formation of sulfide-containing scale and especially the formation of antimony(III) sulfide-containing scale may occur. The anionic copolymers have the following characteristics: 1) The copolymers comprise a. polymerized units of a monomer M1, which is a primary amide of a monoethylenically unsaturated monocarboxylic acid having 3 to 6 C atoms and b. polymerized units of a monoethylenically unsaturated monomer M2, which is selected from monoethylenically unsaturated monomer having a sulfonate group and or a sulfate group and monoethylenically unsaturated monomer having a carboxyl group and mixtures thereof; 2) The copolymers have an anionic charge density in the range from 0.5 to 6.0 mol/kg, 3) The sodium salts of the copolymers have a weight average molecular weight Mw of at least 10000 g/mol, as determined by gel permeation chromatography.

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