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公开(公告)号：US12071399B2
公开(公告)日：2024-08-27
申请号：US17290889
申请日：2019-11-04
申请人： Kemira Oyj
发明人： Jaakko Hiltunen , Petteri Suominen , Ivan Ogibalov , Ain Uustare
IPC分类号： C07C315/04 , C07C317/32
CPC分类号： C07C315/04 , C07C317/32
摘要： The present invention relates to a process for the preparation of arylsulfonylpro-penenitriles. The reaction starting from arylsulfonyl halides is catalyzed by a cat-alyst compound comprising a transition metal. The process is scalable, environ-mentally benign and provides the product in good yield.
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公开(公告)号：US12031274B2
公开(公告)日：2024-07-09
申请号：US17565898
申请日：2021-12-30
申请人： Kemira Oyj
摘要： A method for preparation of a starch-promoted alkyl ketene dimer (AKD) sizing emulsion is provided. The inventive method comprises adding a sizing promoter comprising high-charge cationic starch and polyaluminum chloride (PAC) to a stabilized AKD emulsion and further wherein addition of said sizing promoter comprising high-charge cationic starch and PAC is effected at ambient temperature, after emulsification, stabilization, and homogenization of said stabilized AKD emulsion; and prior to addition of the starch-promoted AKD sizing emulsion to papermaking furnish, pulp, or fiber stock.
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3.发明公开公开(公告)号：US20240173652A1
公开(公告)日：2024-05-30
申请号：US18059975
申请日：2022-11-29
申请人： Kemira Oyj
发明人： Yong Zou
IPC分类号： B01D19/04
CPC分类号： B01D19/0404
摘要： A defoamer composition, method for making the defoamer emulsion, and a method for defoaming an industrial process steam. The defoamer composition comprises a microcrystalline wax and a long chain fatty alcohol in an aqueous emulsion. The defoaming compositions may be used effectively and efficiently in relatively high temperature industrial process streams.
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公开(公告)号：US20240103456A1
公开(公告)日：2024-03-28
申请号：US17769062
申请日：2020-10-13
申请人： KEMIRA OYJ
IPC分类号： G05B13/02
CPC分类号： G05B13/0265
摘要： The invention provides a way to monitor a process (1). The invention utilizes explanation values. A ML model of the process is created. The ML model utilizes measurements from the process as inputs to the ML model and forms model outputs. The inputs are classified to groups in the. The explanation values are calculated for each input indicating contribution of the input to the model output/s, and a sum of the explanation values for each group are calculated. The calculated sums are monitored, each sum indicating status of the group in question.
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5.发明公开公开(公告)号：US20240092668A1
公开(公告)日：2024-03-21
申请号：US18527492
申请日：2023-12-04
申请人： KEMIRA OYJ
CPC分类号： C02F9/00 , B01D65/02 , B01D65/08 , C02F1/24 , C02F1/281 , C02F1/44 , C02F1/5209 , C02F2103/32
摘要： In a water treatment system, a pretreatment chemical is added to water stream in a pretreatment process including a coagulation, flocculation and separation to reduce amount of dissolved and/or particulate matter in the water stream. Hydrophobic conditions in the water stream are monitored upstream or downstream from adding the pretreatment chemicals. Dosing of the pretreatment chemical to the water stream is controlled based on the monitored hydrophobic conditions. Thereby a membrane fouling in subsequent membrane filtration stage can be minimized.
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公开(公告)号：US20240084511A1
公开(公告)日：2024-03-14
申请号：US18266857
申请日：2021-12-16
申请人： KEMIRA OYJ
发明人： Jaakko Hiltunen , Tarja TURKKI
IPC分类号： D21H19/52 , B65D65/42 , C09D7/63 , C09D101/28 , D21H19/12 , D21H19/38 , D21H19/46 , D21H19/82 , D21H21/16 , D21H27/10
CPC分类号： D21H19/52 , B65D65/42 , C09D7/63 , C09D101/28 , D21H19/12 , D21H19/385 , D21H19/46 , D21H19/824 , D21H19/828 , D21H21/16 , D21H27/10 , C08K5/11
摘要： There is provided an aqueous dispersion comprising 40-90 wt-% ethyl cellulose and 10-50 wt-% at least one plasticizer, and to a film having water barrier property produced from the dispersion. Additionally, there is provided a fiber based substrate comprising at least one film layer produced from the aqueous dispersion.
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7.发明公开公开(公告)号：US20240084190A1
公开(公告)日：2024-03-14
申请号：US18506190
申请日：2023-11-10
申请人： Kemira Oyj
发明人： Roopa Tellakula
CPC分类号： C09K8/64 , C09K8/604 , C09K8/68 , C09K8/80 , C09K8/882 , E21B43/16 , E21B43/26 , C09K2208/28 , E21B43/267
摘要： Emulsions, treatment fluids and methods for treating subterranean formations are provided, wherein the emulsions comprise water, a water-immiscible liquid, one or more polymers, and an inverting surfactant composition comprising one or more surfactants selected from the group consisting of ethoxylated amine compounds, ethoxylated fatty acid compounds, and alkyl polyethyleneglycol ether carboxylic acid compounds, alkyl polyglycol ether carboxylic acid compounds, and salts or esters thereof. The emulsions are particularly suitable for use in brine.
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公开(公告)号：US11859128B2
公开(公告)日：2024-01-02
申请号：US16323990
申请日：2017-09-01
申请人： Kemira OYJ
发明人： Roopa Tellakula
CPC分类号： C09K8/64 , C09K8/604 , C09K8/68 , C09K8/80 , C09K8/882 , E21B43/16 , E21B43/26 , C09K2208/28 , E21B43/267
摘要： Emulsions, treatment fluids and methods for treating subterranean formations are provided, wherein the emulsions comprise water, a water-immiscible liquid, one or more polymers, and an inverting surfactant composition comprising one or more surfactants selected from the group consisting of ethoxylated amine compounds, ethoxylated fatty acid compounds, and alkyl polyethyleneglycol ether carboxylic acid compounds, alkyl polyglycol ether carboxylic acid compounds, and salts or esters thereof. The emulsions are particularly suitable for use in brine.
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公开(公告)号：US20230416104A1
公开(公告)日：2023-12-28
申请号：US18036987
申请日：2021-11-25
申请人： KEMIRA OYJ
摘要： The invention relates to a method for producing coagulant aluminium salts. Raw material comprising at least one aluminium oxide compound is mixed with a process acid or a base to form a reaction mixture, which is heated to a reaction temperature of at least 100° C. at a reaction pressure. The aluminium oxide compound is allowed to react with the process acid or the base. The aluminium oxide compound is selected from a group consisting of amorphous aluminium oxide, γ-aluminium oxide, η-aluminium oxide, χ-aluminium oxide, or any of their mixtures. The reaction pressure is at least 2 bar(g).
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公开(公告)号：US20230383378A1
公开(公告)日：2023-11-30
申请号：US18031747
申请日：2021-10-28
申请人： KEMIRA OYJ
CPC分类号： C22B15/0084 , C22B15/0095 , C22B15/0071 , C22B3/26 , C25C1/12
摘要： The invention relates to a control system for a copper extraction process having at least a leaching phase, a solvent extraction phase and an electrowinning phase, the leaching phase comprising a post leach thickener. The control system comprises first measuring units to measure volume and total suspended solids in an influent of the post leach thickener, and at least one second measuring unit to measure at least total suspended solids relating to effluent of the post leach thickener. The control system comprises also a control unit to receive measurements of the first measuring units and the second measuring units. The control unit forms a control signal to a polymer dosing into the influent of the post leach thickener, and another control signal to an organic solvent dosing in the solvent extraction phase.
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