公开(公告)号：DE19607529A1

公开(公告)日：1997-09-04

申请号：DE19607529

申请日：1996-02-28

Applicant: BASF AG

Inventor： HAEHNLE HANS-JOACHIM DR ,  WALTER MANFRED DR ,  TROPSCH JUERGEN DR ,  KREMESKOETTER JENS DR ,  SCHORNICK GUNNAR DR ,  ANSTOCK THOMAS DR

IPC: A61F13/53 ,  A61F5/44 ,  A61F13/15 ,  A61F13/49 ,  A61L15/42 ,  A61L15/60 ,  B32B5/18 ,  C08F220/06 ,  A61L15/24 ,  C08J9/02 ,  C08L23/00

Abstract: The invention concerns absorber elements consisting of at least one composite with absorbent elements on a carrier, the invention being characterized in that on at least one carrier a plurality of elements of a superabsorbent foam are arranged in a grid-like manner at spacings such that the peripheries of the elements touch in the swollen state.

公开(公告)号：DE19859249A1

公开(公告)日：1999-06-10

申请号：DE19859249

申请日：1998-12-22

Applicant: BASF AG

Inventor： HEIBEL CLAUDIA DR ,  KREMESKOETTER JENS DR ,  DOBBELAAR JOHANNES DR

IPC: C08F6/00 ,  C08F6/10

Abstract: A process for the reduction in the residual monomer content of aqueous polymer dispersions is carried out by the addition of a radical redox initiator system. A process for the reduction of the non-chemically bound residual content of an aqueous polymer dispersion (I) that contains compounds having ethylenically unsaturated groups (residual monomers), comprises the post treatment of the dispersion (I) with a radical redox initiator system (II). (II) contains (A) an oxidising agent consisting of compounds liberating hydrogen peroxide and compounds of formula (1); and (B) a reducing agent consisting of alpha -hydroxycarboxylic acids containing a hydroxymethine group and corresponding salts. R = H, 1-8C alkyl or 6-12C aryl. The addition of (II) to (I) is such that (i) at least a portion of (B) is added to (I) followed by the simultaneous but spatially separate addition of the remainder of (B) with the total amount of (A); or (ii) at least a portion of (A) is added to (I) followed by the simultaneous but spatially separate addition of the remainder of (A) with the total amount of (B); or (iii) the simultaneous but spatially separate addition of the total amounts of (A) and (B).

公开(公告)号：DE19634450A1

公开(公告)日：1998-03-05

申请号：DE19634450

申请日：1996-08-26

Applicant: BASF AG

Inventor： HERRMANN CHRISTOF DR ,  HUEBINGER WOLFGANG DR ,  KREMESKOETTER JENS DR ,  MINGES ROLAND DR ,  SCHMIDT-THUEMMES JUERGEN DR ,  MORITZ HANS-ULRICH PROF DR ,  SCHMIDT WOLFGANG

IPC: B01J19/24 ,  C08F10/00 ,  F28D7/08 ,  B01J19/00 ,  B01F13/00 ,  F28D1/00

Abstract: A throughflow reactor shaped as a bent pipe is suitable for continuously carrying out chemical reactions, for preparing mixtures and as a heat exchanger for liquid phases. It comprises several successive bends in alternating directions.