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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：US20210187479A1
公开(公告)日：2021-06-24
申请号：US16757523
申请日：2018-10-31
Applicant: BASF SE
Inventor： Kristine Hartnagel , Wanthip Poomsuwan , Patrick Neal Hamilton , Norbert Herfert , Thomas Daniel , Olaf Hoeller
IPC: B01J20/32 , A61L15/60 , A61L15/24 , A61L15/18 , B01J20/26 , B01J20/30 , B01J20/02 , C08J3/12 , C08J3/24 , C08J3/07
Abstract: In an improved superabsorbent complexed with aluminum ions, the aluminum ions are applied in the form of an aqueous solution comprising aluminum ions, which has the feature that it comprises aluminum ions in a proportion within the range of 0.5%-15% by weight (converted if appropriate to Al3+), based on the total mass of the solution, and further comprises anions of lactic acid (lactate ions) and phosphoric acid (phosphate ions), where the molar proportion of the lactate ions is within the range of 0.01-2.99 times the molar amount of Al3+ and the molar proportion of the phosphate ions is within the range of 0.01-2.99 times the molar amount of Al3+.
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公开(公告)号：US11813589B2
公开(公告)日：2023-11-14
申请号：US16757523
申请日：2018-10-31
Applicant: BASF SE
Inventor： Kristine Hartnagel , Wanthip Poomsuwan , Patrick Neal Hamilton , Norbert Herfert , Thomas Daniel , Olaf Hoeller
IPC: B01J20/32 , A61L15/18 , A61L15/24 , A61L15/60 , B01J20/02 , B01J20/26 , B01J20/30 , C08J3/07 , C08J3/12 , C08J3/24
CPC classification number: B01J20/3236 , A61L15/18 , A61L15/24 , A61L15/60 , B01J20/0292 , B01J20/267 , B01J20/3021 , C08J3/07 , C08J3/12 , C08J3/245 , B01J2220/68 , C08J2333/02
Abstract: In an improved superabsorbent complexed with aluminum ions, the aluminum ions are applied in the form of an aqueous solution comprising aluminum ions, which has the feature that it comprises aluminum ions in a proportion within the range of 0.5%-15% by weight (converted if appropriate to Al3+), based on the total mass of the solution, and further comprises anions of lactic acid (lactate ions) and phosphoric acid (phosphate ions), where the molar proportion of the lactate ions is within the range of 0.01-2.99 times the molar amount of Al3+ and the molar proportion of the phosphate ions is within the range of 0.01-2.99 times the molar amount of Al3+.
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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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