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公开(公告)号：US11458665B2
公开(公告)日：2022-10-04
申请号：US16470590
申请日：2017-12-15
Applicant: BASF SE
Inventor： Monica Haag , Stephan Deuerlein , Holger Barthel , Volker Klock , Roland Krauss
IPC: B29C48/00 , B29C48/63 , B29C48/68 , B29C48/395 , B29C48/535 , B29C48/625 , B29C48/685 , B29B7/42 , C08J3/075 , C08L101/14 , B29K105/00
Abstract: A single-screw extruder for changing a morphology of a superabsorbent polymer, specifically a polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw has a pitch value of a pitch of the screw flights along the conveying zone of the channel, where the channel has a mixing-element arrangement with at least one mixing element which protrudes into the channel of the single-screw extruder and which is configured for the mixing of the SAP polymer gel.
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公开(公告)号：US09822203B2
公开(公告)日：2017-11-21
申请号：US14763185
申请日：2014-01-20
Applicant: BASF SE
Inventor： Monica Haag , Roland Krauss , Thomas Gieger , Volker Klock , Matthias Weismantel
IPC: C08F2/10 , C08F222/10 , C08F6/00 , C08F8/00 , C08J3/24 , A61L15/60 , C08F220/06
CPC classification number: C08F222/1006 , A61L15/60 , C08F2/10 , C08F220/06 , C08J3/245 , C08J2333/02 , C08F2222/1026 , C08L33/08
Abstract: A process for producing water-absorbing polymer particles having high free swell rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed by polymerization of an aqueous monomer solution in a polymerization reactor having at least two shafts (kneaders) which rotate in an axially parallel manner, subsequent extrusion at high temperatures and thermal surface postcrosslinking.
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公开(公告)号：US08945716B2
公开(公告)日：2015-02-03
申请号：US13920515
申请日：2013-06-18
Applicant: BASF SE
Inventor： Roland Krauss , Thomas Gieger , Volker Klock
IPC: B32B27/08
CPC classification number: B01J20/265 , B01J2220/68 , C08F220/06 , Y10T428/31866 , C08F2222/1026
Abstract: A process for producing water-absorbing polymer particles, comprising polymerization of a monomer solution or suspension, classification and drying of the resulting moist polymer gel, and comminution of the coarse fraction removed in the classification of the moist polymer gel, wherein the classification of the moist polymer gel is performed by means of a plurality of bar decks arranged in a cascade in a vibrating frame.
Abstract translation: 一种生产吸水性聚合物颗粒的方法，包括单体溶液或悬浮液的聚合，所得湿聚合物凝胶的分级和干燥，以及粉碎在湿聚合物凝胶分级中除去的粗级分，其中分级 湿聚合物凝胶通过在振动框架中级联布置的多个条形甲板进行。
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公开(公告)号：US20130338328A1
公开(公告)日：2013-12-19
申请号：US13920515
申请日：2013-06-18
Applicant: BASF SE
Inventor： Roland Krauss , Thomas Gieger , Volker Klock
IPC: B01J20/26
CPC classification number: B01J20/265 , B01J2220/68 , C08F220/06 , Y10T428/31866 , C08F2222/1026
Abstract: A process for producing water-absorbing polymer particles, comprising polymerization of a monomer solution or suspension, classification and drying of the resulting moist polymer gel, and comminution of the coarse fraction removed in the classification of the moist polymer gel, wherein the classification of the moist polymer gel is performed by means of a plurality of bar decks arranged in a cascade in a vibrating frame.
Abstract translation: 一种生产吸水性聚合物颗粒的方法，包括单体溶液或悬浮液的聚合，所得湿聚合物凝胶的分级和干燥，以及粉碎在湿聚合物凝胶分级中除去的粗级分，其中分级 湿聚合物凝胶通过在振动框架中级联布置的多个条形甲板进行。
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公开(公告)号：US11560456B2
公开(公告)日：2023-01-24
申请号：US16470270
申请日：2017-12-15
Applicant: BASF SE
Inventor： Monica Haag , Stephan Deuerlein , Roland Krauss , Volker Klock , Holger Barthel
IPC: C08J3/075 , B29C48/68 , B29C48/00 , B29C48/395 , B29C48/53 , B29C48/625 , B29C48/685 , B29B7/42 , B29B7/82 , B29C48/05 , B29C48/345 , B29C48/535 , B29C48/04 , C08J3/24
Abstract: A single-screw extruder for changing a morphology of superabsorbent polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw in the invention has a first pitch value of a pitch of the screw flights along the conveying zone of the channel and, following in conveying direction, has a second pitch value of the pitch of the screw flights along the conveying zone of the channel, where the second pitch value is smaller than the first pitch value.
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Patent Agency Ranking
公开(公告)号：US20190330426A1
公开(公告)日：2019-10-31
申请号：US16470270
申请日：2017-12-15
Applicant: BASF SE
Inventor： Monica Haag , Stephan Deuerlein , Roland Krauss , Volker Klock , Holger Barthel
IPC: C08J3/075 , B29B7/42 , B29B7/82 , B29C48/00 , B29C48/04 , B29C48/395 , B29C48/53 , B29C48/625 , B29C48/68 , B29C48/685 , B29C48/345 , B29C48/535
Abstract: A single-screw extruder for changing a morphology of superabsorbent polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw in the invention has a first pitch value of a pitch of the screw flights along the conveying zone of the channel and, following in conveying direction, has a second pitch value of the pitch of the screw flights along the conveying zone of the channel, where the second pitch value is smaller than the first pitch value.
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公开(公告)号：US20190308358A1
公开(公告)日：2019-10-10
申请号：US16470590
申请日：2017-12-15
Applicant: BASF SE
Inventor： Monica Haag , Stephan Deuerlein , Holger Barthel , Volker Klock , Roland Krauss
IPC: B29C48/00 , B29B7/42 , B29C48/395 , B29C48/535 , B29C48/625 , B29C48/63 , B29C48/685 , C08J3/075 , C08L101/14 , B29C48/68
Abstract: A single-screw extruder for changing a morphology of a superabsorbent polymer, specifically a polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw has a pitch value of a pitch of the screw flights along the conveying zone of the channel, where the channel has a mixing-element arrangement with at least one mixing element which protrudes into the channel of the single-screw extruder and which is configured for the mixing of the SAP polymer gel.
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公开(公告)号：US10179185B2
公开(公告)日：2019-01-15
申请号：US15308383
申请日：2015-05-07
Applicant: BASF SE
Inventor： Markus Braun , Monica Haag , Stephan Deuerlein , Volker Klock , Roland Krauss
Abstract: A process for producing water-absorbing polymer particles is provided, comprising a) a polymerization step in which an aqueous monomer solution comprising at least one ethylenically unsaturated monomer M which bears acid groups and may have been at least partly neutralized and at least one crosslinker is polymerized to obtain an aqueous polymer gel; b) a pelletization step in which the aqueous polymer gel having a solids content of 35 to 70% by weight and a temperature of 75 to 125° C. is forced from a high-pressure zone through a die plate into a low-pressure zone and pellets are obtained, the pressure differential between the high-pressure zone and the low-pressure zone being 4 to less than 14 bar and the orifice ratio of the die plate being 30 to 80%; c) a drying step in which the pellets are dried to a moisture content of less than 10% by weight; d) a grinding step and a classifying step to obtain water-absorbing polymer particles; and e) surface crosslinking of the water-absorbing polymer particles. The water-absorbing polymer particles have a high swell rate and a high retention capacity combined with a favorable ratio of permeability of the swollen gel bed SFC to centrifuge retention capacity CRC.
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公开(公告)号：US20170065739A1
公开(公告)日：2017-03-09
申请号：US15308383
申请日：2015-05-07
Applicant: BASF SE
Inventor： Markus Braun , Monica Haag , Stephan Deuerlein , Volker Klock , Roland Krauss
CPC classification number: A61L15/24 , A61L15/60 , B01J20/267 , B01J20/28011 , C08F2/001 , C08F2/10 , C08F220/06 , C08J3/245 , C08J2333/02 , C08F2222/1026 , C08L33/02
Abstract: A process for producing water-absorbing polymer particles is provided, comprising a) a polymerization step in which an aqueous monomer solution comprising at least one ethylenically unsaturated monomer M which bears acid groups and may have been at least partly neutralized and at least one crosslinker is polymerized to obtain an aqueous polymer gel; b) a pelletization step in which the aqueous polymer gel having a solids content of 35 to 70% by weight and a temperature of 75 to 125° C. is forced from a high-pressure zone through a die plate into a low-pressure zone and pellets are obtained, the pressure differential between the high-pressure zone and the low-pressure zone being 4 to less than 14 bar and the orifice ratio of the die plate being 30 to 80%; c) a drying step in which the pellets are dried to a moisture content of less than 10% by weight; d) a grinding step and a classifying step to obtain water-absorbing polymer particles; and e) surface crosslinking of the water-absorbing polymer particles. The water-absorbing polymer particles have a high swell rate and a high retention capacity combined with a favorable ratio of permeability of the swollen gel bed SFC to centrifuge retention capacity CRC.
Abstract translation: 提供了一种生产吸水性聚合物颗粒的方法，该方法包括：a）聚合步骤，其中包含至少一种带有酸基团且至少部分中和的至少一种烯属不饱和单体M的单体水溶液和至少一种交联剂是 聚合得到聚合物水凝胶; b）造粒步骤，其中固体含量为35至70重量％，温度为75至125℃的聚合物凝胶水凝胶被迫从高压区通过模板进入低压区 得到颗粒，高压区与低压区之间的压力差为4〜14巴，模板的孔径比为30〜80％。 c）干燥步骤，其中将颗粒干燥至含水量小于10重量％; d）研磨步骤和分级步骤以获得吸水性聚合物颗粒; 和e）吸水性聚合物颗粒的表面交联。 吸水性聚合物颗粒具有高的溶胀速率和高的保留能力以及膨胀的凝胶床SFC的渗透性与离心保留容量CRC的良好比率。
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公开(公告)号：US20150065594A1
公开(公告)日：2015-03-05
申请号：US14456711
申请日：2014-08-11
Applicant: BASF SE
Inventor： Martin Wendker , Markus Braun , Roland Krauss , Francisco Javier Lopez Villanueva
IPC: C08F122/10
CPC classification number: C08F220/06 , C08F222/1006
Abstract: A process for preparing water-absorbing polymer particles, comprising polymerisation of a foamed aqueous monomer solution or suspension, drying, grinding and classification, whereas the process further comprising adjusting the amount of foaming agent in the aqueous monomer solution by admixing the aqueous monomer solution with a foaming agent of 1% to 15% by weight based on the amount of ethylenically unsaturated monomer and keeping the solution on a pressure of 6 bar to 15 bar and then expanding the solution.
Abstract translation: 一种制备吸水性聚合物颗粒的方法，包括发泡的含水单体溶液或悬浮液的聚合，干燥，研磨和分级，而该方法还包括通过将单体水溶液与 基于烯键式不饱和单体的量为1重量％至15重量％的发泡剂，并将溶液保持在6巴至15巴的压力下，然后使溶液膨胀。
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