公开(公告)号：AT276288T

公开(公告)日：2004-10-15

申请号：AT99947451

申请日：1999-10-01

Applicant: BASF AG

Inventor： DENTLER JOACHIM ,  FUNK RUEDIGER ,  HERFERT NORBERT ,  WANIOR MARIOLA ,  ENGELHARDT FRIEDRICH

IPC: A61F13/15 ,  A61F13/53 ,  A61L15/00 ,  A61L15/60 ,  B01J20/26 ,  C08F2/10 ,  C08F6/02 ,  C08F6/26 ,  C08F8/00 ,  C08F8/42 ,  C08F20/02 ,  C08F22/00 ,  C08F28/02 ,  C08F30/02 ,  C08F220/06 ,  C08F251/00 ,  C08F261/04 ,  C08F283/02 ,  C08F283/06 ,  C08F291/00

公开(公告)号：MX220853B

公开(公告)日：2004-06-10

申请号：MXPA01003429

申请日：2001-04-03

Applicant: BASF AG

Inventor： DENTLER JOACHIM ,  FUNK RUEDIGER ,  HERFERT NORBERT ,  WANIOR MARIOLA ,  ENGELHARDT FRIEDRICH

IPC: A61F13/15 ,  A61F13/53 ,  A61L15/00 ,  A61L15/60 ,  B01J20/26 ,  C08F2/10 ,  C08F6/02 ,  C08F6/26 ,  C08F8/00 ,  C08F8/42 ,  C08F20/02 ,  C08F22/00 ,  C08F28/02 ,  C08F30/02 ,  C08F220/06 ,  C08F251/00 ,  C08F261/04 ,  C08F283/02 ,  C08F283/06 ,  C08F291/00

公开(公告)号：AU2002338987A1

公开(公告)日：2002-12-03

申请号：AU2002338987

申请日：2002-05-18

Applicant: BASF AG

Inventor： ENGELHARDT FRIEDRICH ,  WHITMORE DARRYL L

IPC: A61L15/42 ,  A61L15/60 ,  A61F13/15

公开(公告)号：PL347935A1

公开(公告)日：2002-04-22

申请号：PL34793599

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.

公开(公告)号：CA2345625A1

公开(公告)日：2000-04-20

申请号：CA2345625

申请日：1999-10-01

Applicant: BASF AG

Inventor： DENTLER JOACHIM ,  FUNK RUDIGER ,  HERFERT NORBERT ,  ENGELHARDT FRIEDRICH ,  WANIOR MARIOLA

IPC: A61F13/15 ,  A61F13/53 ,  A61L15/00 ,  A61L15/60 ,  B01J20/26 ,  C08F2/10 ,  C08F6/02 ,  C08F6/26 ,  C08F8/00 ,  C08F8/42 ,  C08F20/02 ,  C08F22/00 ,  C08F28/02 ,  C08F30/02 ,  C08F220/06 ,  C08F251/00 ,  C08F261/04 ,  C08F283/02 ,  C08F283/06 ,  C08F291/00

Abstract: The invention relates to a hydrophilic hydrogel with a high swelling capacit y. The inventive hydrogel is based on (co)polymerised monomers or graft (co)polymers and is produced by a) radical (co)polymerisation of one or more hydrophilic monomers or graft (co)polymerisation of one or more hydrophilic monomers to a graft base, the average degree of neutralisation of the monome rs containing the acid groups being 0 to 40 mol. %, b) reducing the acidic hydrogel, c) neutralising the acidic hydrogel to an end degree of neutralisation of 50 85 mol. % by adding a neutralising agent, d) drying, milling, and sieving the hydrogel particles, the hydrogel having a centrifug e retention of at least 29g/g for a 0.9 % aqueous NaCl solution and a swelling height of at least 3.5 cm with vertical absorption (1 g) and an extractable content (16 h-value) of less than 5 % or a centrifuge retention of at least 23g/g for a 0.9 % aqueous NaCl solution and a swelling height of at least 5 cm with vertical absorption (3 g) and an extractable content (16 h-value) of le ss than 5 % t.

公开(公告)号：CA2319786A1

公开(公告)日：1999-08-26

申请号：CA2319786

申请日：1999-02-18

Applicant: BASF AG

Inventor： FUNK RUDIGER ,  DANIEL THOMAS ,  FRENZ VOLKER ,  STUVEN UWE ,  ENGELHARDT FRIEDRICH

IPC: A61L15/00 ,  A61L15/60 ,  C07F7/07 ,  C08F8/42 ,  C08G85/00 ,  C08J3/24

Abstract: The invention relates to a method for surface cross-linking particles of superabsorbent polymers, characterized by the use of compounds of formula (1) as cross-linking agents, where R and R' independently of each other are hydrogen or C1-C6 alkyl.

公开(公告)号：DE50303831D1

公开(公告)日：2006-07-27

申请号：DE50303831

申请日：2003-03-04

Applicant: BASF AG

Inventor： ENGELHARDT FRIEDRICH ,  FUNK RUEDIGER ,  WANIOR MARIOLA

IPC: A61F13/49 ,  C08L33/00 ,  A61F5/441 ,  A61F13/15 ,  A61F13/20 ,  A61F13/472 ,  A61F13/53 ,  A61L15/24 ,  A61L15/60 ,  C08F265/00 ,  C08J3/20 ,  C08L23/00 ,  C08L33/02 ,  C08L33/08 ,  C08L35/06 ,  C08L51/00 ,  C08L51/02

Abstract: The present invention relates to polymer mixtures including hydrogel-forming polymers capable of absorbing aqueous fluids and prepared by polymerization of olefinically unsaturated carboxylic acids or derivatives thereof together with copolymers of C 2 -C 8 olefins or styrenes with anhydrides and also their preparation, use and hygiene articles which include same.

公开(公告)号：ES2228104T3

公开(公告)日：2005-04-01

申请号：ES99947451

申请日：1999-10-01

Applicant: BASF AG

Inventor： DENTLER JOACHIM ,  FUNK RUDIGER ,  HERFERT NORBERT ,  WANIOR MARIOLA ,  ENGELHARDT FRIEDRICH

IPC: A61F13/15 ,  A61F13/53 ,  A61L15/00 ,  A61L15/60 ,  B01J20/26 ,  C08F2/10 ,  C08F6/02 ,  C08F6/26 ,  C08F8/00 ,  C08F8/42 ,  C08F20/02 ,  C08F22/00 ,  C08F28/02 ,  C08F30/02 ,  C08F220/06 ,  C08F251/00 ,  C08F261/04 ,  C08F283/02 ,  C08F283/06 ,  C08F291/00

Abstract: Hidrogel hidrófilo altamente hinchable a base de monómeros (co)polimerizados o a base de (co)polímeros de injerto, obtenido por a) (co)polimerización por medio de radicales de uno o varios monómeros hidrófilos de la fórmula en la cual R1 significa hidrógeno, metilo o etilo, R2 significa un grupo ¿COOR4. hidroxisulfonilo, fosfonilo, el grupo fosfonilo esterificado con alcanol con 1 a 4 átomos de carbono o un grupo de la fórmula general (II) R3 significa hidrógeno, metilo, etilo o el grupo carboxilo, R4 significa hidrógeno, aminoalquilo con 1 a 4 átomos de carbono o hidroxialquilo con 1 a 4 átomos de carbono, y R5 significa hidroxisulfonilo, fosfonilo o carboxilo, o (co)polimerización de injerto de uno o varios monómeros hidrófilos de la fórmula sobre una base de injerto, ascendiendo el grado medio de neutralización de los monómeros, que contienen grupos ácido, a un 0 hasta un 40 % en mol, b) trituración del hidrogel ácido, c) neutralización de hidrogel ácido hasta un grado terminal de neutralización de un 50 hasta un 85 % en mol mediante adición de un neutralizante, y d) secado, molienda y tamizado de las partículas de hidrogel, caracterizado porque el hidrogel -muestra una retención de centrífuga para una solución acuosa al 0, 9 % de NaCl de al menos 29 g/g, -una altura de hinchamiento a una absorción vertical (1 g) de al menos 3, 5 cm, y -un contenido de extraíble (valor de 16 h) menor de un 5 %, o -muestra una retención de centrífuga para una solución acuosa al 0, 9 % de NaCl de la menos 23 g/g, -una altura de hinchamiento a una absorción vertical (3 g) de al menos 5 cm, y -un contenido de extraíble (valor de 16 h) menor de un 4 %.

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.

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.