US20090239071A1 - Method for Producing Water-Absorbent Polymer Particles with a Higher Permeability by Polymerising Droplets of a Monomer Solution - Google Patents

Method for Producing Water-Absorbent Polymer Particles with a Higher Permeability by Polymerising Droplets of a Monomer Solution Download PDF

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Publication number
US20090239071A1
US20090239071A1 US12/306,790 US30679007A US2009239071A1 US 20090239071 A1 US20090239071 A1 US 20090239071A1 US 30679007 A US30679007 A US 30679007A US 2009239071 A1 US2009239071 A1 US 2009239071A1
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US
United States
Prior art keywords
polymer beads
water
weight
fibers
process according
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Abandoned
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US12/306,790
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English (en)
Inventor
Uwe Stueven
Matthias Weismantel
Heide Wilfried
Marco Kruger
Volker Seidi
Stefan Blei
Dennis Lösch
Rüdiger Funk
Annemarie Hillebrecht
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BASF SE
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Individual
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Application filed by Individual filed Critical Individual
Assigned to BASF SE reassignment BASF SE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KRUGER, MARCO, SEIDL, VOLKER, BLEI, STEFAN, FUNK, RUDIGER, LOSCH, DENNIS, WEISMANTEL, MATTHIAS, HEIDE, WILFRIED, STUEVEN, UWE, HILLEBRECHT, ANNEMARIE
Publication of US20090239071A1 publication Critical patent/US20090239071A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/34—Polymerisation in gaseous state
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/04—Acids; Metal salts or ammonium salts thereof
    • C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
    • C08F222/10—Esters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0092—Other properties hydrophilic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
    • C08F222/10—Esters
    • C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
    • C08F222/103—Esters of polyhydric alcohols or polyhydric phenols of trialcohols, e.g. trimethylolpropane tri(meth)acrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
    • C08F222/36—Amides or imides
    • C08F222/38—Amides
    • C08F222/385—Monomers containing two or more (meth)acrylamide groups, e.g. N,N'-methylenebisacrylamide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2400/00—Characteristics for processes of polymerization
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
    • C08F2500/24—Polymer with special particle form or size
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]

Definitions

  • Spray polymerization combines the process steps of polymerization and drying.
  • the particle size is set within certain limits by suitable process control.
  • the gas phase comprises preferably only inert gases, i.e. gases which do not intervene in the polymerization under reaction conditions, for example nitrogen and/or water vapour.
  • the polymerization in the monomer solution droplets takes place in homogeneous phase, not taking account of inhomogeneities caused by the suspended inorganic salt. This means that the monomer solution is homogeneous and that the monomer solution remains homogeneous even during the polymerization.
  • the polymer may swell during the polymerization but not precipitate out and form a second phase in the droplet. Otherwise, several polymer nuclei would form in each droplet and form agglomerates of very small primary particles during the drying.
  • the aim of the process according to the invention is the production of one primary particle each per droplet.
  • the monomers a) and the crosslinkers b) are therefore to be selected such that the resulting polymer is swellable in the aqueous phase of the droplet.
  • A is the cross-sectional area and U is the cross-sectional circumference of the polymer beads.
  • the mean sphericity is the volume-average sphericity.
  • the mean sphericity can be determined, for example, with the Camsizer® image analysis system (Retsch Technolgy GmbH; Germany):
  • inventive water-absorbing polymer beads constructions which comprise the inventive water-absorbing polymer beads or to which they are fixed may be present in the absorbent composition according to the present invention.
  • a suitable construction is any which can accommodate the inventive water-absorbing polymer beads and which can additionally be integrated into the absorption layer.
  • a construction for the incorporation of the inventive water-absorbing polymer beads may, for example, be a fiber matrix which consists of a cellulose fiber blend (airlaid web, wet laid web) or of synthetic polymer fibers (meltblown web, spunbonded web), or else of a fiber blend composed of cellulose fibers and synthetic fibers. Possible fiber materials are described in detail in the chapter which follows. The process of an airlaid web is outlined, for example, in the patent application WO 98/28478.
  • open-pore foams or the like can serve for the incorporation of crosslinked, swellable, hydrogel-forming polymers.
  • such a construction can be formed by fusing two individual layers to form one chamber or, better, a multitude of chambers which comprise the inventive water-absorbing polymer beads.
  • a chamber system is outlined in detail in the patent application EP-A 0 615 736 page 7 lines 26 ff.
  • the two layers should be water-pervious.
  • the second layer may be either water-pervious or water-impervious.
  • the layer material used may be tissues or other fabric, closed or open-cell foams, perforated films, elastomers or fabrics made from fiber material.
  • the layer material should have a pore structure whose pore dimensions are small enough to retain the inventive water-absorbing polymer beads.
  • the above examples of the construction of the absorbent composition also include laminates of at least two layers, between which the inventive water-absorbing polymer beads are incorporated and fixed.
  • L0 is the thickness of the gel layer in cm
  • d is the density of the NaCl solution in g/cm 3
  • A is the surface area of the gel layer in cm 2
  • WP is the hydrostatic pressure over the gel layer in dyn/cm 2 .
  • the values reported for the centrifuge retention capacity are based on the anhydrous water-absorbing polymer beads, i.e. the values measured were corrected according to the water content of the water-absorbing polymer beads before the measurement.
  • the water content of the water-absorbing polymer beads is determined by the EDANA (European Disposables and Nonwovens Association) recommended test method No. 430.2-02 “Moisture content”.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Epidemiology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)
US12/306,790 2006-07-19 2007-07-11 Method for Producing Water-Absorbent Polymer Particles with a Higher Permeability by Polymerising Droplets of a Monomer Solution Abandoned US20090239071A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06117489 2006-07-19
EPEP061174892 2006-07-19
PCT/EP2007/057082 WO2008009599A1 (de) 2006-07-19 2007-07-11 Verfahren zur herstellung wasserabsorbierender polymerpartikel mit hoher permeabilität durch polymerisation von tropfen einer monomerlösung

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/057082 A-371-Of-International WO2008009599A1 (de) 2006-07-19 2007-07-11 Verfahren zur herstellung wasserabsorbierender polymerpartikel mit hoher permeabilität durch polymerisation von tropfen einer monomerlösung

Related Child Applications (1)

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US15/299,922 Division US10208149B2 (en) 2006-07-19 2016-10-21 Method for producing water-absorbent polymer particles with a higher permeability by polymerising droplets of a monomer solution

Publications (1)

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US20090239071A1 true US20090239071A1 (en) 2009-09-24

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US12/306,790 Abandoned US20090239071A1 (en) 2006-07-19 2007-07-11 Method for Producing Water-Absorbent Polymer Particles with a Higher Permeability by Polymerising Droplets of a Monomer Solution
US15/299,922 Active 2028-05-04 US10208149B2 (en) 2006-07-19 2016-10-21 Method for producing water-absorbent polymer particles with a higher permeability by polymerising droplets of a monomer solution

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Country Status (11)

Country Link
US (2) US20090239071A1 (ru)
EP (1) EP2046839B2 (ru)
JP (2) JP5637685B2 (ru)
CN (1) CN101490097B (ru)
AT (1) ATE467645T1 (ru)
BR (1) BRPI0714447B1 (ru)
DE (1) DE502007003770D1 (ru)
MY (1) MY152868A (ru)
RU (1) RU2464284C2 (ru)
WO (1) WO2008009599A1 (ru)
ZA (1) ZA200901112B (ru)

Cited By (14)

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US20090315204A1 (en) * 2007-01-16 2009-12-24 Basf Se A German Corporation Method for Producing Polymer Particles by the Polymerization of Fluid Drops in a Gas Phase
US20100261604A1 (en) * 2007-12-19 2010-10-14 Norbert Herfert Process for Producing Surface Crosslinked Superabsorbents
US20100294988A1 (en) * 2006-12-22 2010-11-25 Basf Se Method for Producing Mechanically Stable Water-Absorbent Polymer Particles
US20110001087A1 (en) * 2008-03-05 2011-01-06 Basf Se Process for Preparing Superabsorbents
US20110059329A1 (en) * 2009-09-04 2011-03-10 Basf Se Water-Absorbent Polymer Particles
US20110125119A1 (en) * 2008-08-06 2011-05-26 Basf Se Fluid-absorbent articles
US20110130735A1 (en) * 2008-08-06 2011-06-02 Matthias Weismantel Fluid Absorbent Articles
US20110130275A1 (en) * 2008-08-06 2011-06-02 Matthias Weismantel Fluid-Absorbent Articles
US20110223413A1 (en) * 2010-03-15 2011-09-15 Basf Se Process for Producing Water Absorbent Polymer Particles by Polymerizing Droplets of a Monomer Solution
US20110224361A1 (en) * 2008-11-21 2011-09-15 Basf Se Method for producing permeable water-absorbing polymer particles through polymerization of drops of a monomer solution
WO2011117187A1 (en) * 2010-03-24 2011-09-29 Basf Se Ultrathin fluid-absorbent cores
US20110237754A1 (en) * 2010-03-24 2011-09-29 Basf Se Process for Producing Water-Absorbent Polymer Particles by Polymerizing Droplets of a Monomer Solution
US20170107312A1 (en) * 2014-07-11 2017-04-20 Sumitomo Seika Chemicals Co. Ltd. Water-absorbent resin and absorbent article
US10894245B2 (en) 2017-02-16 2021-01-19 Lg Chem, Ltd. Method for preparing superabsorbent polymer

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RU2463309C2 (ru) * 2006-07-19 2012-10-10 Басф Се Способ получения водопоглощающих полимерных частиц с высокой проницаемостью путем полимеризации капель мономерного раствора
US20100062932A1 (en) * 2007-02-06 2010-03-11 Basf Se A German Corporation Method for Producing Water-Absorbent Polymer Particles by the Polymerization of Droplets of a Monomer Solution
CN102481387B (zh) * 2009-08-25 2014-10-01 巴斯夫欧洲公司 通过聚合单体溶液液滴而制备具有提高的血液吸收量的吸水聚合物颗粒的方法
JP2013522403A (ja) * 2010-03-15 2013-06-13 ビーエーエスエフ ソシエタス・ヨーロピア モノマー溶液の液滴の重合による水吸収ポリマー粒子の製造方法
DE102011076931A1 (de) 2011-06-03 2012-12-06 Basf Se Wässrige Lösung, enthaltend Acrylsäure und deren konjugierte Base
WO2013045163A1 (en) 2011-08-12 2013-04-04 Basf Se A process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution
US10577135B2 (en) 2013-09-30 2020-03-03 Nippon Shokubai Co., Ltd. Method for filling particulate water absorbing agent and method for sampling filled particulate water absorbing agent
JP6950158B2 (ja) * 2016-09-23 2021-10-13 王子ホールディングス株式会社 吸収体及び吸収性物品
WO2018151453A1 (ko) * 2017-02-16 2018-08-23 주식회사 엘지화학 고흡수정 수지의 제조 방법
EP4214252A1 (en) 2020-09-17 2023-07-26 Basf Se Process for producing superabsorbent polymer particles

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