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公开(公告)号：US12239947B2
公开(公告)日：2025-03-04
申请号：US17264093
申请日：2019-08-09
Applicant: BASF SE
Inventor： Thomas Pfeiffer , Ruediger Funk , Marco Krueger , Karl Possemiers , Juergen Schroeder , Matthias Weismantel
Abstract: A process for producing superabsorbent particles by polymerizing a monomer solution, comprising the steps of continuously polymerizing the monomer solution on the continuous belt of a belt reactor, comminuting the polymer gel obtained, rinsing the polymer gel obtained on the underside of the belt reactor into a separation unit with water, separating the polymer gel from the water in the separation unit and recycling the polymer gel into the comminution, wherein the polymer gel has a swelling capacity in water of at least 100 g/g, the dwell time of the polymer gel in the rinse water is less than 40 minutes, and the separation unit has openings with a clear width of at least 1 mm.
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公开(公告)号：US20240100506A1
公开(公告)日：2024-03-28
申请号：US18266861
申请日：2021-12-07
Applicant: BASF SE
Inventor： Ruediger Funk , Matthias Weismantel , Marcus Maemecke
CPC classification number: B01J20/3085 , B01J20/267 , C08F6/008 , C08J3/005 , C08J3/075 , C08J3/16 , C08J3/245 , B01J2220/68 , C08J2333/02
Abstract: A process for producing thermally surface postcrosslinked superabsorbent particles, comprising polymerization of a monomer solution or suspension, static drying of the resultant aqueous polymer gel, comminution of the dried polymer gel, classification of the resultant polymer particles, with removal of excessively small polymer particles as undersize, mixing of the removed undersize with an aqueous solution, said aqueous solution comprising a crosslinker, and recycling of the polymer gel obtained from the undersize into the static drying.
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公开(公告)号：US11933552B2
公开(公告)日：2024-03-19
申请号：US17688032
申请日：2022-03-07
Applicant: BASF SE
Inventor： Oskar Stephan , Karl-Friedrich Schneider , Matthias Weismantel
Abstract: The invention relates to a heat exchanger for heating gas to a temperature in the range from 150 to 400° C., wherein the gas is heated by indirect heat transfer and all the surfaces of the walls of the heat exchanger which come into contact with the gas have been hot dip galvanized and the surfaces which come into contact with the gas, after the hot dip galvanization, have been heat treated at a temperature in the range from 400 to 750° C.
The invention further relates to the use of the heat exchanger.-
公开(公告)号：US20220016596A1
公开(公告)日：2022-01-20
申请号：US17289328
申请日：2019-11-04
Applicant: BASF SE
Inventor： Monte Alan Peterson , John Perry Guentzel , Juergen Schroeder , Ruediger Funk , Matthias Weismantel
IPC: B01J20/26 , C08F220/06 , A61L15/60 , B01J20/30 , B01J20/28
Abstract: The invention relates to a process for producing superabsorbent polymer particles, comprising storing acrylic acid in at least one tank (B1) at a production site for acrylic acid and in at least one tank (B2) at a production site for superabsorbent polymer particles, wherein the at least one tank (B1) at the production site for acrylic acid and the at least one tank (B2) at the production site for superabsorbent polymer particles are interconnected by one single pipe line (3) and the flow inside the pipe line (3) is temporary reversed during interruptions of the production superabsorbent polymer particles.
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公开(公告)号：US10648731B2
公开(公告)日：2020-05-12
申请号：US15571862
申请日：2016-04-15
Applicant: BASF SE
Inventor： Gerald Grünewald , Rüdiger Funk , Matthias Weismantel , Karl Possemiers
IPC: C08F2/00 , F26B3/06 , F26B17/04 , F26B21/02 , F26B21/12 , C08F2/01 , B01J20/28 , B01J20/30 , C08F2/06 , C08J3/12 , F26B25/06 , B29B9/10 , B29B9/12 , C08F20/06
Abstract: A production process for production of water-absorbing polymer particles including drying an aqueous polymer gel in a belt drier with a conveyor belt. The belt drier is formed with a drier setup substantially comprising the conveyor belt and an air recycling conduit downstream of the drier setup for air recycling, where recycled air is withdrawn from the drier setup and fed back to the drier setup via the air recycling conduit.
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Patent Agency Ranking
公开(公告)号：US10647787B2
公开(公告)日：2020-05-12
申请号：US15571868
申请日：2016-04-15
Applicant: BASF SE
Inventor： Gerald Grünewald , Rüdiger Funk , Matthias Weismantel
IPC: C08F6/00 , C08F2/10 , C08F2/18 , F26B3/04 , F26B17/04 , F26B5/04 , C08F20/06 , B01J20/26 , B01J20/30 , C08J3/12 , F26B21/00 , F26B21/02 , F26B21/10
Abstract: A production process for production of water absorbing polymer particles, including drying an aqueous polymer gel in a belt drier with a conveyor belt having a drier setup in the interior, in which drying air in the interior of the drier setup is conducted in countercurrent counter to the conveying direction and the interior of the drier setup is kept substantially at a reduced pressure relative to the ambient pressure outside the drier setup, and the interior has and/or forms a pressure zone, and is especially divided into a number of pressure zones.
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公开(公告)号：US20180154335A1
公开(公告)日：2018-06-07
申请号：US15862758
申请日：2018-01-05
Applicant: BASF SE
Inventor： Gerald Grünewald , Rüdiger Funk , Matthias Weismantel , Monte Peterson
CPC classification number: B01J20/30 , B01J20/261 , B01J20/28016 , B01J20/3021 , B01J20/3078 , B01J20/3085 , B65G17/067 , B65G17/34 , B65G69/20 , F26B3/04 , F26B17/04
Abstract: The invention relates to a process for producing water-absorbing polymer particles, comprising the steps of: •—processing an aqueous polymer gel from polymerization of a monomer solution or suspension, •—drying the aqueous polymer gel in a conveyer dryer, in particular in a forced air conveyer dryer, wherein •—the conveyer dryer has a circulating conveyer belt and the aqueous polymer gel is conveyed on the circulating conveyer belt, and wherein •—the circulating conveyer belt is formed as a circulating plate conveyer belt, comprising a number of belt plates separated by a hinge line of a hinge assembly and each belt plate having a surface for receiving the aqueous polymer gel, wherein said hinge assembly comprises a knuckle joint (301) with the hinge line in form of a straight hinge line.
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公开(公告)号：US20180135912A1
公开(公告)日：2018-05-17
申请号：US15571862
申请日：2016-04-15
Applicant: BASF SE
Inventor： Gerald Grünewald , Rüdiger Funk , Matthias Weismantel , Karl Possemiers
IPC: F26B3/06 , F26B17/04 , F26B21/02 , F26B21/12 , F26B25/06 , C08F2/06 , C08J3/12 , B01J20/30 , B01J20/28
CPC classification number: F26B3/06 , B01J20/28016 , B01J20/3021 , B29B9/10 , B29B9/12 , C08F2/00 , C08F2/01 , C08F2/06 , C08F20/06 , C08J3/12 , C08J2300/14 , F26B17/04 , F26B21/02 , F26B21/12 , F26B25/06
Abstract: A production process for production of water-absorbing polymer particles including drying an aqueous polymer gel in a belt drier with a conveyor belt. The belt drier is formed with a drier setup substantially comprising the conveyor belt and an air recycling conduit downstream of the drier setup for air recycling, where recycled air is withdrawn from the drier setup and fed back to the drier setup via the air recycling conduit.
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29.发明申请METHOD FOR PRODUCING WATER-ABSORBENT POLYMER PARTICLES WITH A HIGHER PERMEABILITY BY POLYMERISING DROPLETS OF A MONOMER SOLUTION 审中-公开通过聚合单体溶液制备具有较高渗透性的吸水聚合物颗粒的方法公开(公告)号：US20170037172A1
公开(公告)日：2017-02-09
申请号：US15299922
申请日：2016-10-21
Applicant: BASF SE
Inventor： Uwe Stueven , Matthias Weismantel , Wilfried Heide , Marco Krüger , Volker Seidl , Stefan Blei , Dennis Loesch , Rüdiger Funk , Annemarie Hillebrecht
IPC: C08F222/10 , A61L15/24 , B29B9/10 , A61L15/60
CPC classification number: C08F222/10 , A61L15/24 , A61L15/60 , B29B9/10 , B29K2033/04 , B29K2995/0092 , C08F2/34 , C08F220/06 , C08F222/1006 , C08F222/385 , C08F2222/1026 , C08F2400/00 , C08F2500/24 , Y10T428/2982
Abstract: A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution, comprising monomers bearing acid groups, in a gas phase surrounding the droplets, wherein the monomer solution comprises polyvalent cations and the polymer beads have a mean diameter of at least 150 μm.
Abstract translation: 一种制备具有高渗透性的吸水聚合物珠粒的方法，该方法通过在包围液滴的气相中聚合包含含有酸基团的单体的单体溶液的液滴，其中所述单体溶液包含多价阳离子，并且所述聚合物珠的平均直径为 至少150μm。
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公开(公告)号：US09486777B2
公开(公告)日：2016-11-08
申请号：US14011384
申请日：2013-08-27
Applicant: BASF SE
Inventor： Monte Peterson , John Perry Guentzel , Gregory Boykin , Leo Van Miert , Rene Callot , Oskar Stephan , Rüdiger Funk , Matthias Weismantel
CPC classification number: B01J20/261 , A61L15/60 , B01J2220/68 , C08F2/10 , C08F6/008 , C08J3/245 , C08J2333/02 , C08L33/02
Abstract: The invention relates to a process for producing water-absorbing polymer particles, comprising polymerization, drying the resulting polymer gel on a through circulation belt dryer, crushing the dried polymer gel, pre-grinding, separating of incompletely dried particles with a perforated plate, grinding and classifying the resulting polymer particles.
Abstract translation: 本发明涉及一种生产吸水性聚合物颗粒的方法，包括聚合，在循环带式干燥机上干燥所得聚合物凝胶，粉碎干燥的聚合物凝胶，预研磨，用多孔板分离不完全干燥的颗粒，研磨 并分级得到的聚合物颗粒。
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