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公开(公告)号：DE59909423D1
公开(公告)日：2004-06-09
申请号：DE59909423
申请日：1999-11-18
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：ES2205788T3
公开(公告)日：2004-05-01
申请号：ES99910242
申请日：1999-02-19
Applicant: BASF AG
Inventor： FUNK RUDIGER , FRENZ VOLKER , RIEGEL ULRICH , WEISMANTEL MATTHIAS , ENGELHARDT FRITZ , DANIEL THOMAS
IPC: C07D263/20 , A61L15/00 , A61L15/60 , C08F8/30
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公开(公告)号：DE10225943A1
公开(公告)日：2004-01-08
申请号：DE10225943
申请日：2002-06-11
Applicant: BASF AG
Inventor： JAWOREK THOMAS , DANIEL THOMAS , WOLF LOTHAR , KOENIGER RAINER , SCHWALM REINHOLD , HARTMANN GABRIELE , WICKEL STEFAN
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公开(公告)号：CA2488226A1
公开(公告)日：2003-12-18
申请号：CA2488226
申请日：2003-06-06
Applicant: BASF AG
Inventor： JAWOREK THOMAS , SCHROEDER JUERGEN , SCHWALM REINHOLD , FUNK RUEDIGER , RIEGEL ULRICH , WEISMANTEL MATTHIAS , POPP ANDREAS , DANIEL THOMAS
IPC: C08G65/332 , A61L15/60 , C07B61/00 , C07C67/08 , C07C69/54 , C08F290/06 , C08G65/26 , C08G65/28
Abstract: The invention relates to the novel (meth)acrylic esters of polyalkoxylated trimethylolpropane of formula (I) wherein AO independently represents EO, PO or BO, whereby EO represents O-CH2-CH2-, PO independently represents O-CH2- CH(CH3)- or O-CH(CH3)-CH2-, BO independently represents O-CH2-CH(CH2-CH3)- o r O-CH(CH2-CH3)-CH2-, p1 + p2 + p3 equals 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74 o r 75, and R1, R2, R3 independently represent H or CH3. The invention also relates to a simplified method for producing said esters and to the use of t he reaction mixtures thereby obtained.
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公开(公告)号：CZ20031084A3
公开(公告)日：2003-09-17
申请号：CZ20031084
申请日：2001-10-17
Applicant: BASF AG
Inventor： HEIDE WILFRIED , WICKEL STEFAN , DANIEL THOMAS , STUVEN UWE
IPC: C08F2/01 , B01J19/20 , C08F2/04 , C08F2/10 , C08F8/00 , C08F220/04 , C08F220/06 , C08F220/56 , C08F290/06
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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Patent Agency Ranking
公开(公告)号：AU2002250836A1
公开(公告)日：2002-08-12
申请号：AU2002250836
申请日：2002-01-18
Applicant: BASF AG
Inventor： DANIEL THOMAS , RIEGEL ULRICH , WEISMANTEL MATTHIAS
IPC: A61F13/53 , A61F5/44 , A61F13/15 , A61F13/49 , A61L15/18 , A61L15/60 , B01J20/26 , B01J20/30 , C08K3/32 , C09K17/02 , C09K17/20 , C09K17/40 , C09K101/00
Abstract: Disclosed is a water absorbent comprising particles of a water absorbent polymer whose surface is associated with a water insoluble metal phosphate. It possesses an improved performance profile comprising high absorption capacity, improved fluid transportation performance and a faster swell rate.
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公开(公告)号：AU1055302A
公开(公告)日：2002-04-29
申请号：AU1055302
申请日：2001-10-17
Applicant: BASF AG
Inventor： HEIDE WILFRIED , WICKEL STEFAN , DANIEL THOMAS , STUVEN UWE
IPC: C08F2/01 , B01J19/20 , C08F2/04 , C08F2/10 , C08F8/00 , C08F220/04 , C08F220/06 , C08F220/56 , C08F290/06
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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公开(公告)号：MXPA01005256A
公开(公告)日：2001-09-01
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：CA2352579A1
公开(公告)日：2000-06-02
申请号：CA2352579
申请日：1999-11-18
Applicant: BASF AG
Inventor： WEISMANTEL MATTHIAS , ENGELHARDT FRIEDRICH , FRENZ VOLKER , DANIEL THOMAS , RIEGEL ULRICH
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, whic h hydrogels are produced by polymerization of olefinically unsaturated carboxylic acids or their derivatives. The hydrogels are characterized in th at before, during or after the polymerization reaction and before drying a silicic acid alkali salt of the general formula (I) M2O x n SiO2 is added to the polymerization reaction mixture. In said formula M is an alkali metal an d 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：CA2319453A1
公开(公告)日：1999-09-02
申请号：CA2319453
申请日：1999-02-24
Applicant: BASF AG
Inventor： ENGELHARDT FRIEDRICH , WEISMANTEL MATTHIAS , RIEGEL ULRICH , DANIEL THOMAS , FRENZ VOLKER , FUNK RUDIGER
Abstract: The invention relates to a method for surface subsequent cross-linking of water absorbing polymers. The invention is characterized in that the polymers are treated with a surface subsequent cross-linking solution and are subsequently cross-linked and dried during or after treatment by increasing the temperature. The invention is additionally characterized in that the crosslinking agent contains a bis-2-oxazolidinone or a poly-2-oxazolidinone which is dissolved in an inert solvent and which comprises structural units of general formula (I), wherein R1 is a branched or unbranched C1-C18-alkylene, a branched or unbranched C2-C18-alkenylene, C5-C8-cycloalkylene, phenylene, naphthylene, anthracenylene, phenylene substituted with hydrocarbons, naphthylene or anthracenylene or another substituted or non-substituted C6-C18-arylene radical; R2 is a branched or unbranched C1-C18-alkylene, and; n is a whole number from 1 to 50. In addition, the cross-linking agent can also contain a mixture of bis-2-oxazolidinones and poly-2-oxazolidinones dissolved in an inert solvent.
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