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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：US20250041828A1
公开(公告)日：2025-02-06
申请号：US18694478
申请日：2022-09-16
Applicant: BASF SE
Inventor： Thomas Daniel , Sebastian Marius Raupp , Monte Alan Peterson , Vernon Lynn Adey , Karl Possemiers
Abstract: A process for producing surface postcrosslinked superabsorbent particles, wherein an aqueous monomer solution with a small amount of initiator is polymerized to give a polymer gel, the resultant polymer gel is extruded through a die plate, the extruded polymer gel is dried on an air circulation belt drier having one or more zones, and the resultant polymer particles are ground and classified and then thermally surface postcrosslinked, wherein the temperatures of the drying gas supplied in the course of drying in the forward zones of the air circulation belt drier are from 120 to 160° C., and the speeds of the air supplied are from 1.2 to 3.0 m/s.
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公开(公告)号：US11883848B2
公开(公告)日：2024-01-30
申请号：US16630873
申请日：2018-07-20
Applicant: BASF SE
Inventor： Rüdiger Funk , Matthias Weismantel , Monte Alan Peterson , Patrick Neal Hamilton , Ronny De Kaey , Karl Possemiers
CPC classification number: B07B13/16 , B01J20/261 , B07B4/08 , B07B11/02 , C08F20/06 , B01J2220/68 , B07B2220/02
Abstract: The invention relates to a classification process for superabsorbent polymer particles, comprising classifying the water-absorbent polymer particles in a screen machine under reduced pressure wherein the pressure above the uppermost sieve is from 0 to 4.0 mbar per sieve higher than below the undermost sieve.
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公开(公告)号：US12161994B2
公开(公告)日：2024-12-10
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 , A61L15/60 , B01J20/28 , B01J20/30 , C08F220/06
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：US11535719B2
公开(公告)日：2022-12-27
申请号：US16649793
申请日：2018-10-09
Applicant: BASF SE
Inventor： Oskar Stephan , Gerald Gruenewald , Matthias Weismantel , Karl Possemiers , Monte Alan Peterson , Ruediger Funk , Sylvia Bertha , Tom Catternan
Abstract: A process for producing superabsorbents, comprising the steps of i) classifying the superabsorbent particles by means of one or more sieves and ii) removing metallic impurities by means of one or more magnetic separators, wherein classification is accomplished using sieves made of a wire mesh, the wires of the wire mesh consist of a steel composed of at least 70% by weight of iron, at least 10% by weight of chromium and less than 2.5% by weight of nickel, and the throughput of superabsorbent particles in the magnetic separator is in the range from 2.0 to 6.5 g/s per cm2 of free cross-sectional area.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20190255514A1
公开(公告)日：2019-08-22
申请号：US16344046
申请日：2017-10-16
Applicant: BASF SE
Inventor： Dieter Hermeling , Rüdiger Funk , Matthias Weismantel , Monte Alan Peterson , Peter Leunis , Karl Possemiers
Abstract: Filling process for superabsorbent polymer particles The invention relates to a filling process for superabsorbent polymer particles, comprising discharging the superabsorbent polymer particles out of a silo into bulk container for shipping, wherein the filling level of the silo during filling of the bulk container is never less than 20%, in order to avoid particle segregation.
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公开(公告)号：US12037429B2
公开(公告)日：2024-07-16
申请号：US17432135
申请日：2020-02-21
Applicant: BASF SE
Inventor： Monte Alan Peterson , Ruediger Funk , Matthias Weismantel , Juergen Schroeder
IPC: B02C4/42 , A61L15/60 , B01J20/26 , B01J20/28 , B01J20/30 , B02C4/02 , B02C4/28 , B02C4/40 , C08F2/06 , C08F220/06
CPC classification number: C08F220/06 , A61L15/60 , B01J20/267 , B01J20/28004 , B01J20/3021 , B02C4/02 , B02C4/286 , B02C4/40 , C08F2/06 , B01J2220/68
Abstract: The invention relates to a process for producing superabsorbent polymer particles, comprising polymerization of a monomer solution, drying the resulting polymer gel and grinding the dried polymer gel with a roll mill, wherein the rolls of the roll mill are cleaned by reducing the feed rate to the roll mill, and if the deflection and/or the power consumption increases above a setpoint, operating the roll mill with reduced feed, and increasing the feed rate to the roll mill.
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公开(公告)号：US20210402370A1
公开(公告)日：2021-12-30
申请号：US17289287
申请日：2019-11-04
Applicant: BASF SE
Inventor： Monte Alan Peterson , Ronny De Kaey , Karl Possemiers , Juergen Schroeder , Ruediger Funk , Matthias Weismantel
Abstract: The invention relates to a process for producing superabsorbent polymer particles, comprising polymerization of a monomer solution, wherein the monomer solution comprises partly neutralized acrylic acid formed by continuous mixing of acrylic acid and an aqueous solution of a base, the apparatus for preparing the partly neutralized acrylic acid comprises a vessel (B), and the feed line to vessel (B) ends inside vessel (B) below the liquid Level of the partly neutralized acrylic acid.
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公开(公告)号：US20200283588A1
公开(公告)日：2020-09-10
申请号：US16649793
申请日：2018-10-09
Applicant: BASF SE
Inventor： Oskar Stephan , Gerald Gruenewald , Matthias Weismantel , Karl Possemiers , Monte Alan Peterson , Ruediger Funk , Sylvia Bertha , Tom Catternan
IPC: C08J5/02
Abstract: A process for producing superabsorbents, comprising the steps of i) classifying the superabsorbent particles by means of one or more sieves and ii) removing metallic impurities by means of one or more magnetic separators, wherein classification is accomplished using sieves made of a wire mesh, the wires of the wire mesh consist of a steel composed of at least 70% by weight of iron, at least 10% by weight of chromium and less than 2.5% by weight of nickel, and the throughput of superabsorbent particles in the magnetic separator is in the range from 2.0 to 6.5 g/s per cm2 of free cross-sectional area.
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公开(公告)号：US20200147652A1
公开(公告)日：2020-05-14
申请号：US16630873
申请日：2018-07-20
Applicant: BASF SE
Inventor： Rüdiger Funk , Matthias Weismantel , Monte Alan Peterson , Patrick Neal Hamilton , Ronny De Kaey , Karl Possemiers
Abstract: The invention relates to a classification process for superabsorbent polymer particles, comprising classifying the water-absorbent polymer particles in a screen machine under reduced pressure wherein the pressure above the uppermost sieve is from 0 to 4.0 mbar per sieve higher than below the undermost sieve.
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