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

IPC: C07D263/20 ,  A61L15/00 ,  A61L15/60 ,  C08F8/30 ,  C08G73/06 ,  C08J3/24

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.

公开(公告)号：DE10351267A1

公开(公告)日：2005-06-02

申请号：DE10351267

申请日：2003-10-31

Applicant: BASF AG

Inventor： BECK MARTIN ,  FRENZ VOLKER ,  KOWALSKI ANNA ,  SELZER ELISABETH ,  BAUER ERNST JUERGEN ,  KELLER HARALD ,  STEINMETZ BERNHARD

IPC: A61L15/48 ,  A61L15/60 ,  C08J3/075 ,  B01J20/30

Abstract: A novel hydrogel (I), showing floating behaviour, thickens 40-90% of a solution and/or suspension to be thickened from the fluid surface and the remainder of the solution and/or suspension from the bottom of the container. Independent claims are included for: (1) the preparation of a hydrogel (I'), by post-treating a dried hydrogel with a hydrophobic compound (II) and optionally a hydrophilic compound (III); and (2) mixtures of (I') with auxiliaries, specifically one or more of biocides, antimicrobial or antibacterial agents, perfumes or fragrances, stabilizers, dyes and/or pH indicators.

公开(公告)号：CA2542491A1

公开(公告)日：2005-05-12

申请号：CA2542491

申请日：2004-10-28

Applicant: BASF AG

Inventor： STEINMETZ BERNHARD ,  BECK MARTIN ,  SELZER ELISABETH ,  KELLER HARALD ,  BAUER ERNST JUERGEN ,  KOWALSKI ANNA ,  FRENZ VOLKER

IPC: A61L15/00 ,  A61L15/48 ,  A61L15/60

Abstract: Polymeric particles capable of absorbing blood and/or body fluids, the polymeric particles being coated with at least one surfactant and with at least one solvent, are produced and used for absorbing blood and/or body fluids, especially in hygiene articles.

公开(公告)号：ES2216617T3

公开(公告)日：2004-10-16

申请号：ES99963322

申请日：1999-11-23

Applicant: BASF AG

Inventor： RIEGEL ULRICH ,  WEISMANTEL MATTHIAS ,  FRENZ VOLKER ,  DANIEL THOMAS ,  ENGELHARDT FRITZ

IPC: A61F5/44 ,  A61F13/15 ,  A61F13/53 ,  A61F13/49 ,  A61L15/00 ,  C08F8/30 ,  C08J3/24 ,  C08K5/357 ,  C08L101/00

Abstract: Liquid-absorbent polymers are prepared by a process for the gel and/or surface postcrosslinking of water-absorbent polymers by the polymer being treated with a surface postcrosslinking solution and being postcrosslinked and dried during and after the treatment by raising the temperature, wherein the crosslinker comprises a compound of the formula Iwhere R is hydrogen, C1-C4-alkyl, C1-C4-hydroxyalkyl, trialkylsilyl or acetyl and R , R , R , R , R , R are each independently hydrogen, C1-C12-alkyl, C2-C12-alkenyl or C6-C12-aryl, dissolved in an inert solvent, and are used in hygiene articles, packaging materials and nonwovens.

公开(公告)号：DE10230121A1

公开(公告)日：2004-02-05

申请号：DE10230121

申请日：2002-07-04

Applicant: BASF AG

Inventor： STEPHAN OSKAR ,  WEIDL CHRISTIAN HUBERT ,  FRENZ VOLKER ,  GOERTH FELIX CHRISTIAN ,  BECK MARTIN

IPC: A61F13/82 ,  C09J7/02 ,  B05D5/10

公开(公告)号：AU2003257431A1

公开(公告)日：2004-01-23

申请号：AU2003257431

申请日：2003-07-03

Applicant: BASF AG

Inventor： WEIDL CHRISTIAN HUBERT ,  FRENZ VOLKER ,  GORTH FELIX CHRISTIAN ,  BECK MARTIN ,  STEPHAN OSKAR

IPC: A61F13/82 ,  C09J7/02 ,  C09J5/00

公开(公告)号：CA2490890A1

公开(公告)日：2004-01-15

申请号：CA2490890

申请日：2003-07-03

Applicant: BASF AG

Inventor： FRENZ VOLKER ,  GOERTH FELIX CHRISTIAN ,  BECK MARTIN ,  WEIDL CHRISTIAN HUBERT ,  STEPHAN OSKAR

IPC: A61F13/82 ,  C09J7/02 ,  C09J5/00

Abstract: The invention relates to a method for producing discrete patterns of a sticking coating on a substrate, comprising the following steps: (a) moving continuously or discontinuously the substrate in a conveyor device; (b) flat ly applying a low viscosity, polymerizable and/or cross-linkable precursor material of a sticking material through at least one opening substantially configured in the form of a slot of a movable application device on the substrate, whereby a pattern is produced by moving the application device relative to the substrate and (c) the applied precursor material is polymerized and/or crosslinked downstream of the application area.

公开(公告)号：DE59906512D1

公开(公告)日：2003-09-11

申请号：DE59906512

申请日：1999-02-19

Applicant: BASF AG

Inventor： FUNK RUEDIGER ,  FRENZ VOLKER ,  RIEGEL ULRICH ,  WEISMANTEL MATTHIAS ,  ENGELHARDT FRITZ ,  DANIEL THOMAS

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

公开(公告)号：AU2003244472A8

公开(公告)日：2003-09-02

申请号：AU2003244472

申请日：2003-01-30

Applicant: BASF AG

Inventor： HEIDER WOLFGANG ,  FRENZ VOLKER ,  HAHNLE HANS-JOACHIM ,  FUNK RUDIGER ,  SCHORNICK GUNNAR

IPC: A61F13/53 ,  A61F13/00 ,  A61F13/49 ,  A61L15/16 ,  A61L15/60 ,  C08F6/00 ,  C08J9/00 ,  C08J9/36 ,  C08F6/10 ,  C08L101/14

Abstract: A process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water absorbent crosslinked polymer foams containing units derived from monoethylenically unsaturated acids, which comprises treating the formed articles with at least 0.5% by weight of a polymer containing primary and/or secondary amino groups and having a molar mass of at least 300, the formed foam articles thus obtainable and use of the wet strength enhanced formed foam articles in hygiene articles.

公开(公告)号：DE19854573A1

公开(公告)日：2000-05-31

申请号：DE19854573

申请日：1998-11-26

Applicant: BASF AG

Inventor： RIEGEL ULRICH ,  WEISMANTEL MATTHIAS ,  FRENZ VOLKER ,  DANIEL THOMAS ,  ENGELHARDT FRITZ

IPC: A61F13/53 ,  A61F5/44 ,  A61F13/15 ,  A61F13/49 ,  A61L15/00 ,  C08F8/30 ,  C08J3/24 ,  C08K5/357 ,  C08L101/00 ,  C08F8/00

Abstract: The invention relates to a method for the secondary cross-linking of gels or surfaces of water-absorbing polymers by treating the polymer with a surface secondary cross-linking agent and subsequently subjecting it to a secondary cross-linking reaction during or after the treatment by raising the temperature and drying the polymer. According to the invention, the cross-linking agent is a compound of formula (I), wherein R is hydrogen, C1-C4 alkyl, C1-C4 hydroxyalkyl, trialkylsilyl or acetyl and R , R , R , R , R , R independently is hydrogen, C1-C12 alkyl, C2-C12 alkenyl or C6-C12 aryl, dissolved in an inert solvent. The invention also relates to the liquid-absorbing polymers obtained by said method, to their use in hygiene items, packaging material and nonwovens.