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公开(公告)号:BR0313757A
公开(公告)日:2005-06-21
申请号:BR0313757
申请日:2003-08-25
Applicant: BASF AG
Inventor: DANIEL THOMAS , RIEGEL ULRICH , ELLIOTT MARK , WEISMANTEL MATTHIAS , WENDKER MARTIN
IPC: B01J20/26 , A61L15/24 , A61L15/60 , C08J3/24 , C08L33/02 , C08L33/24 , C08L33/26 , C08L101/14 , C08L39/02 , C08L101/00 , C08L57/00
Abstract: Water-absorbing product comprises water-absorbing polymer particles and a nitrogen-containing polymer containing 5-17 mole/kg of protonatable nitrogen atoms. An Independent claim is also included for production of the water-absorbing product by applying the nitrogen-containing polymer or a solution thereof onto the water-absorbing polymer particles and optionally drying the product.
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公开(公告)号:ZA200403357B
公开(公告)日:2005-05-04
申请号:ZA200403357
申请日:2004-05-04
Applicant: BASF AG
Inventor: DANIEL THOMAS , MASSONNE KLEMENS , MICHAEL EXNER KAI , RIEGEL ULRICH , WEISMANTEL MATTHIAS
IPC: B65D65/02 , A61L15/00 , A61L15/60 , C07D265/32 , C08F8/30 , C08K5/357 , C08L101/14 , C08F , A61L
Abstract: The invention relates to a method for gel post-crosslinking or surface post-crosslinking water-absorbing hydogels with morpholine-2,3-diones, to the post-crosslinked hydrogels and to the use thereof.
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公开(公告)号:BR0311498A
公开(公告)日:2005-03-15
申请号:BR0311498
申请日:2003-06-10
Applicant: BASF AG
Inventor: DANIEL THOMAS , SCHROEDER JUERGEN , JAWOREK THOMAS , FUNK RUEDIGER , SCHWALM REINHOLD , WEISMANTEL MATTHIAS , RIEGEL ULRICH , POPP ANDREAS
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公开(公告)号:DE10334584A1
公开(公告)日:2005-02-24
申请号:DE10334584
申请日:2003-07-28
Applicant: BASF AG
Inventor: DANIEL THOMAS , RIEGEL ULRICH , ELLIOTT MARK , OEHSEN UBBO VON , EXNER KAI MICHAEL , MASSONNE KLEMENS
Abstract: A process for the post crosslinking of water absorbing polymers comprises treatment with a bicyclic amideacetal crosslinking agent with simultaneous or subsequent heating. A process for the post crosslinking of water absorbing polymers comprises treatment with a bicyclic amideacetal crosslinking agent (I) of formula (I) with simultaneous or subsequent heating. [Image] R 1>-R 9>H, 1-12 C alkyl, 2-12 C alkenyl or 6-12 C aryl, all optionally halogenated An independent claim is included for the resulting water absorbing polymer.
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公开(公告)号:DE10331456A1
公开(公告)日:2005-02-24
申请号:DE10331456
申请日:2003-07-10
Applicant: BASF AG
Inventor: HERMELING DIETER , DANIEL THOMAS , ELLIOTT MARK , RIEGEL ULRICH , DIETSCHE FRANK
IPC: C08G65/26 , C08G65/332 , C08L101/14
Abstract: Disclosed are novel (meth)acrylic esters of alkoxylated unsaturated polyol ethers, a process for their preparation and their use for preparing crosslinked swellable hydrogel-forming polymers and crosslinked swellable hydrogel-forming polymers.
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公开(公告)号:MX225754B
公开(公告)日:2005-01-24
申请号:MXPA01005256
申请日:2001-05-25
Applicant: BASF AG
Inventor: DANIEL THOMAS , RIEGEL ULRICH , WEISMANTEL MATTHIAS , HERFERT NORBERT , ENGELHARDT FRIEDRICH
IPC: A61F13/53 , A61F5/44 , A61F13/15 , A61F13/49 , A61L15/18 , A61L15/60 , C08F2/44 , C08F20/04 , C08K3/34
Abstract: The invention relates to hydrogels capable of absorbing aqueous fluids, which hydrogels are produced by polymerization of olefinically unsaturated carboxylic acids or their derivatives. The hydrogels are characterized in that before, during or after the polymerization reaction and before drying a silicic acid alkali salt of the general formula (I) M2O×nSiO2 is added to the polymerization reaction mixture. In said formula M is an alkali metal and n is a number between 0.5 and 4. The hydrogel obtained in this way is then dried at an elevated temperature. The invention also relates to a method for producing said hydrogels and to their use for absorbing aqueous fluids.
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公开(公告)号:DE10358369A1
公开(公告)日:2004-12-23
申请号:DE10358369
申请日:2003-12-11
Applicant: BASF AG
Inventor: RIEGEL ULRICH , DANIEL THOMAS , WEISMANTEL MATTHIAS , ELLIOTT MARK , FUNK RUEDIGER , SCHWALM REINHOLD
IPC: C08G65/26 , C08G65/332 , A61L15/26 , B65D65/38 , C04B24/32 , C09D171/02
Abstract: New mixtures (F i) of at least two (preferably 2-4) compounds (I), each having at least two double bonds and where at least two of (I) have at least two (meth)acrylate ester groups as double bond components, have a weight-functionality ratio (WFR) value (defined as the sum of the (molar fraction times molecular weight divided by number of double bonds) values for all the components (I)) of 200-600 (preferably 250-350) g per mole double bond. Independent claims are included for: (a) the preparation of (F i); (b) the production of a crosslinked hydrogel (CHG), by polymerizing the mixture (F i) with (meth)acrylic acid, optionally other monoethylenically unsaturated monomers (N) and optionally further copolymerizable hydrophilic comonomer(s) (M) in presence of radical initiator(s) (K) and optionally graft substrate(s) (L), then optionally post-crosslinking, drying and optionally milling and/or screening; (c) polymers obtained by the above CHG production method; (d) CHG's, containing at least one M in polymerized form and crosslinked with (F i); (e) mixtures comprising (by weight) 0.1-40% (F i) and (meth0acrylic acid, 0.5-99.9% (M), 0-10% esterification catalyst(s) (C), 0-5% polymerization inhibitor(s) (D), 0-10% solvent (E) and optionally diluents (G) to 100%; (f) CHG's obtained from the mixtures, followed by optionally post-crosslinking, drying and optionally milling and/or screening.
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公开(公告)号:DE10358372A1
公开(公告)日:2004-10-14
申请号:DE10358372
申请日:2003-12-11
Applicant: BASF AG
Inventor: RIEGEL ULRICH , DANIEL THOMAS , HERMELING DIETER , ELLIOTT MARK , SCHWALM REINHOLD
IPC: C07C69/00 , C08F20/18 , C08G65/26 , C08G65/28 , C08G65/332 , C09D5/02 , C08F220/32 , C08F265/06 , C08L33/10 , C08J3/075 , C04B24/24
Abstract: Trimethylolpropane esters are new. Trimethylolpropane esters are of formula (1). (1) AO : OCH2CH2, OCH2CH(CH3), OCH(CH3)CH2, n1-n3 : 4-6; n1+n2+n3+n4 : 14-16; m1-m3 : 1-3; m1+m2+m3 : 4-6; R1-R3 : 4-6 Independent claims are included for: (1) a process for the production of esters of formula (1) by reaction of alkoxylated trimethylolpropane with (meth)acrylic acid in the presence of at least one esterification catalyst (C) and at least one polymerization inhibitor (D) as well as optionally a solvent (E) that forms an azeotrope with water; optionally removal of at least a portion of the water from the reaction mixture during or after the water from the reaction, optiionally neutralizing the reaction mixture; optionally removing the solvent if present by distillation and/or stripping with an inert gas; (2) across-linked hydrogel prepared by polymerization of an ester of formula (1) with (meth)acrylic acid with optionally additional monoethylenicaly unsaturated compounds (N) as well as optionally at least a further copolymerizable hydrophilic monomer (M) in the presence of at least one radicatl initiator (K) and optionally a graft base (L); optionally cross-linking of the resulting reaction mixture; drying of the reaction mixture and optionally grinding the reaction mixture; (3) a mixture comprising 0.1-40 wt.% of a ester of formula (1) and (meth)acrylic acid, 0.5-99.9 wt.% of a hydrophilic monomer (M), 0-10 wt.% of an esterification catalyst (C), 0-5 wt.% polymerization inhibitor (D) and 0-10 wt.% sovlent (E).
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公开(公告)号:BR0212952A
公开(公告)日:2004-10-13
申请号:BR0212952
申请日:2002-09-27
Applicant: BASF AG
Inventor: DANIEL THOMAS , EXNER KAI MICHAEL , MASSONNE KLEMENS , RIEGEL ULRICH , WEISMANTEL MATTHIAS
IPC: B65D65/02 , A61L15/00 , A61L15/60 , C07D265/32 , C08F8/30 , C08K5/357 , C08L101/14
Abstract: The invention relates to a method for gel post-crosslinking or surface post-crosslinking water-absorbing hydogels with morpholine-2,3-diones, to the post-crosslinked hydrogels and to the use thereof.
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公开(公告)号:ZA200303812B
公开(公告)日:2004-08-13
申请号:ZA200303812
申请日:2003-05-16
Applicant: BASF AG
Inventor: DANIEL THOMAS , HEIDE WILFRIED , STUEVEN UWE , WICKEL STEFAN
IPC: C08F2/01 , B01J19/20 , C08F2/04 , C08F2/10 , C08F8/00 , C08F220/04 , C08F220/06 , C08F220/56 , C08F290/06 , C08F
Abstract: The invention relates to a cross-linked, water-swellable polymer that contains polymerized into it moieties of a) water-soluble, monoethylenically unsaturated monomers, and b) 0.001 to 5 mole % based on the monomers a) of a cross-linking combination, b1) a first cross-linking agent with at least two (meth)acrylic ester moieties in the molecule and b2) a second cross-linking agent with at least two (meth)allyloxy moieties in the molecule, the molar ratio of b1) to b2) ranging from 0.7:1 to 10:1. The polymer according to the invention has a balanced property profile as regards absorptivity, gel strength, absorption speed and extractable componenents and can be advantageously produced by a continuous method.
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