公开(公告)号：AU2002349359A1

公开(公告)日：2003-07-09

申请号：AU2002349359

申请日：2002-10-15

Applicant: BASF AG

Inventor： WHITMORE DARRYL L ,  ENGELHARDT FRIEDRICH

IPC: A61F13/15 ,  A61L15/46 ,  A61L15/60

Abstract: A storage layer obtainable by a process including (a) forming a sprayable blend containing one or more superabsorbent forming monomers; superabsorbent polymer particles; water; and one or more initiators; (b) applying the sprayable blend to a fibrous web; and (c) subjecting the sprayed fibrous web to conditions under which the superabsorbent forming monomer polymerizes. The storage layer is used in absorbent articles to store aqueous fluids.

公开(公告)号：AU1232502A

公开(公告)日：2002-04-29

申请号：AU1232502

申请日：2001-10-17

Applicant: BASF AG

Inventor： FRENZ VOLKER ,  HERFERT NORBERT ,  WEISMANTEL MATTHIAS ,  RIEGEL ULRICH ,  ENGELHARDT FRIEDRICH ,  FUNK RUDIGER

IPC: A61L15/60 ,  C08F220/04 ,  C08F271/02

公开(公告)号：DE10013217A1

公开(公告)日：2001-09-20

申请号：DE10013217

申请日：2000-03-17

Applicant: BASF AG

Inventor： ENGELHARDT FRIEDRICH ,  HERFERT NORBERT ,  DANIEL THOMAS ,  FRENZ VOLKER ,  RIEGEL ULRICH

IPC: A61L15/18 ,  A61L15/60 ,  B01J20/26 ,  C08G77/02 ,  B01J20/22 ,  C08G63/52 ,  C08G63/84 ,  C08K7/26

Abstract: Hydrophilic, swellable, hydrogel-forming polymers (I) containing an aluminosilicate component (II).

公开(公告)号：CA2361577A1

公开(公告)日：2000-08-10

申请号：CA2361577

申请日：2000-01-29

Applicant: BASF AG

Inventor： BROWN PATRICIA D ,  WOODRUM GUY T ,  ENGELHARDT FRIEDRICH ,  FUNK RUDIGER ,  HERFERT NORBERT ,  WANIOR MARIOLA

IPC: A61F13/53 ,  A61F5/44 ,  A61F13/15 ,  A61F13/49 ,  A61L15/60 ,  B01J20/26 ,  B01J20/30 ,  C08F8/00 ,  C08F20/06 ,  C08F20/58 ,  C08F22/02 ,  C08F22/38 ,  C08F28/02 ,  C08F220/04 ,  C08F291/00 ,  C08J3/12 ,  C08J3/24 ,  C08F220/06 ,  A61L15/00

Abstract: The invention relates to cross-linked, hydrophilic highly swellable hydrogel s on the basis of polymerized monomers or on the basis of graft polymers that have a pressure absorbency index of ~100 and a vertical absorption under a pressure of 1922.8 Pa of at least 12 g/g. The invention further relates to a method for producing such hydrogels by radical polymerization of hydrophilic monomers containing acidic groups, their alkali metal or ammonium salts with (a) a copolymerization cross-linking agent which contains at least two ethylenically unsaturated double bonds in the molecule, and (b) with a reactive cross-linking agent A which has an ethylenically unsaturated double bond and at least one functional group that forms covalent bonds with the acidic groups of the hydrophilic polymers, a reactive cross-linking agent B which has at least two functional groups that form covalent bonds with the acidic groups of the hydrophilic polymers, and/or with ions of polyvalent alcohols, optionally in the presence of at least one graft base, to give a cross-linked, hydrophilic base polymer, reducing the base polymer in size an d subjecting the surface of the particles of the base polymer to a secondary cross-linking step. The invention further relates to the use of the highly swellable hydrogels as absorption agents for water and aqueous liquids.

公开(公告)号：CA2320778A1

公开(公告)日：1999-08-26

申请号：CA2320778

申请日：1999-02-19

Applicant: BASF AG

Inventor： WEISMANTEL MATTHIAS ,  ENGELHARDT FRIEDRICH ,  DANIEL THOMAS ,  RIEGEL ULRICH ,  FRENZ VOLKER ,  FUNK RUDIGER

IPC: C07D263/20 ,  A61L15/00 ,  A61L15/60 ,  C08F8/30

Abstract: The invention relates to a method for the gel-phase or surface secondary crosslinking of water-absorbent polymers, characterized in that the polymer is treated with a solution for surface secondary cross-linking, during or after treatment undergoes secondary cross-linking by temperature elevation and is then dried. Dissolved in an inert solvent the cross-linking agent contains a compound of formula (I), where R1 and R2 independently of each other are H, hydroxy, phenyl or C1-C6-alkyl, R3 is hydrogen, C1-C12-alkyl, C1-C12-alkenyl or C6-C12-aryl and R4 and R5 independently of each other are C1-C12-alkyl, C1C12-alkenyl, C6-C12-aryl, hydroxy, C1-C12-alkoxy or hydrogen. The invention also relates to water-absorbent polymers obtained according to the above method, and to their use in hygiene articles, packaging materials and nonwoven materials.

公开(公告)号：CA2319457A1

公开(公告)日：1999-08-26

申请号：CA2319457

申请日：1999-02-19

Applicant: BASF AG

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

IPC: A61L15/00 ,  A61L15/60 ,  C08F8/40 ,  C08J3/24 ,  D06M15/263

Abstract: The invention relates to a method for the surface secondary cross-linking of water-absorbent polymers, according to which the polymer is sprayed with a solution for surface secondary cross-linking. As cross-linking agent said solution contains phosphoric acid esters of the formula (1) or (2), where X is OH or NH2 and R is C1-C12 alkylene, or a mixture of such esters dissolved in an inert solvent. The moist product during or after spraying is subjected to secondary cross-linking and dried by raising the temperature to 50-250 ~C. The invention also relates to water-absorbent polymers obtainable in accordance with the above method and to their use in hygiene articles, packing materials and non-woven materials.