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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：US12121877B2
公开(公告)日：2024-10-22
申请号：US17258931
申请日：2019-07-15
Applicant: BASF SE
Inventor： Marco Krueger , Ruediger Funk , Thomas Pfeiffer , Karl Possemiers , Juergen Schroeder , Matthias Weismantel
CPC classification number: B01J20/267 , A61L15/26 , A61L15/60 , B01J20/28016 , B01J20/3085 , C08F20/06 , C08J3/245 , C08F2810/20
Abstract: A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising the steps of continuously preneutralizing a monomer while cooling and partly recycling the preneutralized monomer into the preneutralization, continuously heating the preneutralized monomer by means of a heat exchanger and continuously postneutralizing the heated monomer, wherein the monomer solution or suspension prior to entry into the polymerization reactor is at a temperature of 70 to 99° C. and the temperature of the heating medium used in the heat exchanger is less than 160° C.
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公开(公告)号：US20220089789A1
公开(公告)日：2022-03-24
申请号：US17422466
申请日：2020-01-13
Applicant: BASF SE
Inventor： Rene Callot , Karl Possemiers , Ruediger Funk , Marco Krueger , Matthias Weismantel , Juergen Schroeder
IPC: C08F2/18 , C08F2/04 , C08F20/04 , C08F6/00 , B01J20/26 , F26B17/04 , F26B17/02 , B01J20/285 , A61F13/53
Abstract: A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising drying of the resultant aqueous polymer gel in an air circulation belt dryer, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt dryer by means of an oscillating conveyor belt and that guide devices are located at the edges of the conveyor belt.
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公开(公告)号：US12220686B2
公开(公告)日：2025-02-11
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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Patent Agency Ranking
公开(公告)号：US12059504B2
公开(公告)日：2024-08-13
申请号：US17272364
申请日：2019-09-17
Applicant: BASF SE
Inventor： Rene Callot , Ruediger Funk , Marco Krueger , Thomas Pfeiffer , Karl Possemiers , Juergen Schroeder , Matthias Weismantel
CPC classification number: A61L15/60 , B01J20/261 , B08B1/165 , B08B1/20 , C08F220/06 , C08J3/245 , B01J2220/68 , C08F6/008
Abstract: A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising drying of the resultant aqueous polymer gel in an air circulation belt drier, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt drier by means of an oscillating conveyor belt, the underside of the revolving conveyor belt is freed of adhering polymer gel by means of at least one stripper device, and the underside of the revolving conveyor belt is sprayed with water.
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公开(公告)号：US20220185924A1
公开(公告)日：2022-06-16
申请号：US17432135
申请日：2020-02-21
Applicant: BASF SE
Inventor： Monte Alan Peterson , Ruediger Funk , Matthias Weismantel , Juergen Schroeder
IPC: C08F220/06 , A61L15/60 , B02C4/02 , B02C4/28 , B02C4/40 , C08F2/06 , B01J20/28 , B01J20/26 , B01J20/30
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：US20210402373A1
公开(公告)日：2021-12-30
申请号：US17289302
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 vessel (B) has a cylindrical shape and a torispherical bottom.
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公开(公告)号：US20210291145A1
公开(公告)日：2021-09-23
申请号：US17258931
申请日：2019-07-15
Applicant: BASF SE
Inventor： Marco Krueger , Ruediger Funk , Thomas Pfeiffer , Karl Possemiers , Juergen Schroeder , Matthias Weismantel
Abstract: A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising the steps of continuously preneutralizing a monomer while cooling and partly recycling the preneutralized monomer into the preneutralization, continuously heating the preneutralized monomer by means of a heat exchanger and continuously postneutralizing the heated monomer, wherein the monomer solution or suspension prior to entry into the polymerization reactor is at a temperature of 70 to 99° C. and the temperature of the heating medium used in the heat exchanger is less than 160° C.
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公开(公告)号：US12275808B2
公开(公告)日：2025-04-15
申请号：US17422466
申请日：2020-01-13
Applicant: BASF SE
Inventor： Rene Callot , Karl Possemiers , Ruediger Funk , Marco Krueger , Matthias Weismantel , Juergen Schroeder
IPC: C08F2/18 , A61F13/53 , B01J20/26 , B01J20/285 , C08F2/04 , C08F6/00 , C08F20/04 , F26B17/02 , F26B17/04
Abstract: A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising drying of the resultant aqueous polymer gel in an air circulation belt dryer, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt dryer by means of an oscillating conveyor belt and that guide devices are located at the edges of the conveyor belt.
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