CA2037292A1 - Preparation of finely divided, water-soluble polymers - Google Patents

Preparation of finely divided, water-soluble polymers

Info

Publication number
CA2037292A1
CA2037292A1 CA2037292A CA2037292A CA2037292A1 CA 2037292 A1 CA2037292 A1 CA 2037292A1 CA 2037292 A CA2037292 A CA 2037292A CA 2037292 A CA2037292 A CA 2037292A CA 2037292 A1 CA2037292 A1 CA 2037292A1
Authority
CA
Canada
Prior art keywords
surfactant
polymerization
water
finely divided
soluble polymers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2037292A
Other languages
French (fr)
Other versions
CA2037292C (en
Inventor
Manfred Niessner
Stefan Wickel
Walter Schneider
Juergen Beck
Heinrich Hartmann
Thomas Meyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of CA2037292A1 publication Critical patent/CA2037292A1/en
Application granted granted Critical
Publication of CA2037292C publication Critical patent/CA2037292C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • C08F2/04—Polymerisation in solution
    • C08F2/10—Aqueous solvent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

Finely divided, water-soluble polymers are prepared by polymerization of water-soluble, monoethylenically unsaturated monomers in not less than 20% strength by weight aqueous solution in the presence of a polymerization initiator in a kneader by a process in which from 0.1 to 10% by weight, based on the total monomers, of a surfactant are used in the polymerization, the polymerization initially being carried out to a conversion of the monomers of not less than 60% in the absence of the surfactant or in the presence of not more than 50% of the amount of surfactant, and the remaining amount of surfactant then being added to the reaction mixture and the polymerization completed. The addition of surfactant causes the polymer gel to disintegrate with formation of fine particles.
CA002037292A 1990-03-08 1991-02-28 Preparation of finely divided, water-soluble polymers Expired - Fee Related CA2037292C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4007313.0 1990-03-08
DE4007313A DE4007313A1 (en) 1990-03-08 1990-03-08 METHOD FOR PRODUCING FINE-PART, WATER-SOLUBLE POLYMERISATS

Publications (2)

Publication Number Publication Date
CA2037292A1 true CA2037292A1 (en) 1991-09-09
CA2037292C CA2037292C (en) 2000-09-26

Family

ID=6401692

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002037292A Expired - Fee Related CA2037292C (en) 1990-03-08 1991-02-28 Preparation of finely divided, water-soluble polymers

Country Status (6)

Country Link
EP (1) EP0445619B1 (en)
JP (1) JP2901773B2 (en)
AU (1) AU633705B2 (en)
CA (1) CA2037292C (en)
DE (2) DE4007313A1 (en)
ZA (1) ZA911671B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316200A1 (en) * 1993-05-14 1994-11-17 Roehm Gmbh Process for the preparation of low-viscosity, water-soluble polymer dispersions
DE10037629A1 (en) * 2000-08-02 2002-02-14 Skw Bauwerkstoffe Deutschland Water-soluble or water-swellable sulfo-containing associative thickening copolymers, process for their preparation and their use
DE102005014291A1 (en) 2005-03-24 2006-09-28 Basf Ag Process for the preparation of water-absorbing polymers
FR2888240B1 (en) 2005-07-11 2007-09-07 Biomerieux Sa SOLUBLE ELECTROPOLYMERISABLE MONOMERS IN AQUEOUS SOLUTION AND ELECTROACTIVE PROBES THAT MAY BE OBTAINED WITH SUCH MONOMERS
DE102005042604A1 (en) 2005-09-07 2007-03-08 Basf Ag Neutralization process
WO2008007345A2 (en) * 2006-07-12 2008-01-17 Vacuumschmelze Gmbh & Co. Kg Method for the production of magnet cores; magnet core and inductive component with a magnet core
EP2163266A1 (en) 2008-09-12 2010-03-17 The Procter & Gamble Absorbent article comprising water-absorbing material
CN102596266B (en) 2009-08-28 2014-12-24 巴斯夫欧洲公司 Process for producing triclosan-coated superabsorbents
BR112012005901A2 (en) 2009-09-16 2019-09-24 Basf Se superabsorbent, process for producing a superabsorbent, article for absorbing fluids, and process for producing articles for absorbing fluids
WO2011032922A1 (en) 2009-09-17 2011-03-24 Basf Se Color-stable superabsorber
EP2476714A1 (en) 2011-01-13 2012-07-18 Basf Se Polyurethane integral foams with improved surface hardness
US8741169B2 (en) 2011-09-26 2014-06-03 Basf Se Heat storage composition comprising sodium sulfate decahydrate and superabsorbent
EP2573153A3 (en) 2011-09-26 2014-07-30 Basf Se Heat storing composition containing sodium sulfate, decahydrate and superabsorber
CN104245760A (en) 2012-03-30 2014-12-24 巴斯夫欧洲公司 Color-stable super-absorbent
CN104271622B (en) 2012-03-30 2017-02-22 巴斯夫欧洲公司 Color-stable super-absorbent
EP2730596A1 (en) 2012-11-13 2014-05-14 Basf Se Polyurethane soft foam materials containing plant seeds
US10881555B2 (en) 2016-03-30 2021-01-05 Basf Se Fluid-absorbent article
WO2019091848A1 (en) 2017-11-10 2019-05-16 Basf Se Super absorber
JP7361714B2 (en) 2018-04-10 2023-10-16 ビーエーエスエフ ソシエタス・ヨーロピア Osmotic superabsorbent and method of manufacturing the same
CN112512476A (en) 2018-08-01 2021-03-16 巴斯夫欧洲公司 Fluid-absorbent core
DE102019216910A1 (en) 2018-11-12 2020-05-14 Basf Se Process for post-crosslinking superabsorbents
WO2021013639A1 (en) 2019-07-24 2021-01-28 Basf Se Permeable superabsorbent and process for production thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232915A (en) * 1962-05-02 1966-02-01 Du Pont Suspension polymerization using 2-stage buffer salt addition to prevent clustering and to regulate bead size
US4286082A (en) * 1979-04-06 1981-08-25 Nippon Shokubai Kagaku Kogyo & Co., Ltd. Absorbent resin composition and process for producing same
JPH0830098B2 (en) * 1987-07-16 1996-03-27 日本合成化学工業株式会社 Super absorbent resin manufacturing method
DE3843780A1 (en) 1988-12-24 1990-07-05 Basf Ag METHOD FOR PRODUCING FINE-PARTICLE, GEL-SHAPED, WATER-SWELLABLE COPOLYMERS

Also Published As

Publication number Publication date
EP0445619A2 (en) 1991-09-11
JPH0597907A (en) 1993-04-20
EP0445619B1 (en) 1994-11-09
DE4007313A1 (en) 1991-09-12
JP2901773B2 (en) 1999-06-07
ZA911671B (en) 1992-11-25
CA2037292C (en) 2000-09-26
EP0445619A3 (en) 1991-10-16
AU7271491A (en) 1991-09-12
AU633705B2 (en) 1993-02-04
DE59103454D1 (en) 1994-12-15

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