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公开(公告)号：US09738769B2
公开(公告)日：2017-08-22
申请号：US13763029
申请日：2013-02-08
Applicant: BASF SE
Inventor： Matthias Weismantel , Ulrich Riegel , Thomas Gieger , Markus Braun , Michael A. Mitchell
CPC classification number: C08J9/18 , C08J9/06 , C08J9/14 , C08J9/16 , C08J2300/14 , C08J2333/08 , C08J2333/14
Abstract: A process for producing water-absorbing polymer particles with high free swell rate and high permeability by polymerization of an aqueous monomer solution or suspension to give an aqueous polymer gel, wherein a thermal blowing agent essentially free of inorganic acid anions is mixed into the polymer gel, and subsequent thermal drying of the polymer gel.
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2.发明申请Water-Absorbing Polymer Particles with High Free Swell Rate and High Permeability 有权具有高自由溶胀速率和高渗透性的吸水聚合物颗粒公开(公告)号：US20130210947A1
公开(公告)日：2013-08-15
申请号：US13763029
申请日：2013-02-08
Applicant: BASF SE
Inventor： Matthias Weismantel , Ulrich Riegel , Thomas Gieger , Markus Braun , Michael A. Mitchell
IPC: C08J9/14
CPC classification number: C08J9/18 , C08J9/06 , C08J9/14 , C08J9/16 , C08J2300/14 , C08J2333/08 , C08J2333/14
Abstract: A process for producing water-absorbing polymer particles with high free swell rate and high permeability by polymerization of an aqueous monomer solution or suspension to give an aqueous polymer gel, wherein a thermal blowing agent essentially free of inorganic acid anions is mixed into the polymer gel, and subsequent thermal drying of the polymer gel.
Abstract translation: 一种生产具有高自由溶胀速率和高渗透性的吸水聚合物颗粒的方法，其通过聚合单体水溶液或悬浮液得到聚合物水凝胶，其中将基本上不含无机酸阴离子的热发泡剂混合到聚合物凝胶 ，随后聚合物凝胶的热干燥。
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3.发明授权Water-absorbing polymer particles with high free swell rate and high permeability 有权具有高自由溶胀率和高渗透性的吸水聚合物颗粒公开(公告)号：US09587081B2
公开(公告)日：2017-03-07
申请号：US14861409
申请日：2015-09-22
Applicant: BASF SE
Inventor： Matthias Weismantel , Ulrich Riegel , Thomas Gieger , Markus Braun , Michael A. Mitchell
CPC classification number: C08J9/18 , C08J9/06 , C08J9/14 , C08J9/16 , C08J2300/14 , C08J2333/08 , C08J2333/14
Abstract: A process for producing water-absorbing polymer particles with high free swell rate and high permeability by polymerization of an aqueous monomer solution or suspension to give an aqueous polymer gel, wherein a thermal blowing agent essentially free of inorganic acid anions is mixed into the polymer gel, and subsequent thermal drying of the polymer gel.
Abstract translation: 一种生产具有高自由溶胀速率和高渗透性的吸水聚合物颗粒的方法，其通过聚合单体水溶液或悬浮液得到聚合物水凝胶，其中将基本上不含无机酸阴离子的热发泡剂混合到聚合物凝胶 ，随后聚合物凝胶的热干燥。
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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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Patent Agency Ranking
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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公开(公告)号：US09833766B2
公开(公告)日：2017-12-05
申请号：US15308382
申请日：2015-05-07
Applicant: BASF SE
Inventor： Markus Braun , Monica Haag , Stephan Deuerlein
IPC: B01J20/26 , C08F220/06 , A61L15/24 , A61L15/60 , B01J20/28 , C08J3/24 , C08F2/10 , C08F222/10
CPC classification number: B01J20/261 , A61L15/24 , A61L15/60 , B01J20/267 , B01J20/28004 , C08F2/10 , C08F220/06 , C08F2222/1026 , C08J3/245 , C08J2333/02
Abstract: Crosslinked polymer particles having a) a proportion of particles having a particle size of 150 to 300 μm of at least 20% by weight, b) a free swell rate of the entirety of the polymer particles FSRoverall of at least 0.25 g/g·s, c) a difference ΔFSR of at least 0.15, d) a centrifuge retention capacity CRC of at least 25.0 g/g, and e) a permeability of the swollen gel bed SFC of at least 90×10−7 cm3·s/g are disclosed.
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公开(公告)号：US20170050170A1
公开(公告)日：2017-02-23
申请号：US15308382
申请日：2015-05-07
Applicant: BASF SE
Inventor： Markus Braun , Monica Haag , Stephan Deuerlein
CPC classification number: B01J20/261 , A61L15/24 , A61L15/60 , B01J20/267 , B01J20/28004 , C08F2/10 , C08F220/06 , C08F2222/1026 , C08J3/245 , C08J2333/02
Abstract: Water-absorbing polymer particles are formed from crosslinked polymer chains comprising predominantly polymerized units of at least partly neutralized acrylic acid. They have a) a proportion of particles having a particle size of 150 to 300 μm of at least 20% by weight, b) a free swell rate of the entirety of the polymer particles FSRoverall of at least 0.25 g/g·s, c) a difference ΔFSR of at least 0.15, d) a centrifuge retention capacity CRC of at least 25.0 g/g, and e) a permeability of the swollen gel bed SFC of at least 90×10−7 cm3·s/g. ΔFSR is defined as =ΔFSR=FSR150-300 μm−FSRoverall in which FSR150-300 μm represents the free swell rate of the polymer particles having a particle size of 150 to 300 μm. The absorption capacity of the entirety of the polymer particles is substantially utilized even in the case of segregation of particles of different size.
Abstract translation: 其中FSR150-300μm表示粒径为150-300μm的聚合物颗粒的自由溶胀速率。 即使在不同尺寸的颗粒分离的情况下，也可以充分利用聚合物颗粒整体的吸收能力。
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9.发明申请WATER-ABSORBING POLYMER PARTICLES WITH HIGH FREE SWELL RATE AND HIGH PERMEABILITY 有权具有高自由率和高渗透性的吸水聚合物颗粒公开(公告)号：US20160009889A1
公开(公告)日：2016-01-14
申请号：US14861409
申请日：2015-09-22
Applicant: BASF SE
Inventor： Matthias Weismantel , Ulrich Riegel , Thomas Gieger , Markus Braun , Michael A. Mitchell
IPC: C08J9/18
CPC classification number: C08J9/18 , C08J9/06 , C08J9/14 , C08J9/16 , C08J2300/14 , C08J2333/08 , C08J2333/14
Abstract: A process for producing water-absorbing polymer particles with high free swell rate and high permeability by polymerization of an aqueous monomer solution or suspension to give an aqueous polymer gel, wherein a thermal blowing agent essentially free of inorganic acid anions is mixed into the polymer gel, and subsequent thermal drying of the polymer gel.
Abstract translation: 一种生产具有高自由溶胀速率和高渗透性的吸水聚合物颗粒的方法，其通过聚合单体水溶液或悬浮液得到聚合物水凝胶，其中将基本上不含无机酸阴离子的热发泡剂混合到聚合物凝胶 ，随后聚合物凝胶的热干燥。
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