公开(公告)号：DE59705859D1

公开(公告)日：2002-01-31

申请号：DE59705859

申请日：1997-09-19

Applicant: BASF AG

Inventor： MUELLER DR ,  RECK DR ,  ROSER DR

IPC: C12N11/14 ,  A61K47/02 ,  A61K47/04 ,  B01J21/08 ,  B01J35/10 ,  C01B33/12 ,  C01B37/02 ,  C09C1/30

Abstract: Mesoporous silicon dioxide has a surface area of mesopores of ≥ 500 m /g and a pore volume of ≥ 1.0 ml/g. Also claimed is production of the mesoporous silicon dioxide which comprises reacting silicon dioxide precursors in a water-containing reaction medium containing a cationic polymers dispersion.

公开(公告)号：DE50012008D1

公开(公告)日：2006-03-30

申请号：DE50012008

申请日：2000-08-09

Applicant: BASF AG

Inventor： DREHER DR ,  PAKUSCH DR ,  SANDOR DR ,  RECK DR ,  WOOD DR ,  DENU HANS-JURGEN

IPC: C04B28/02 ,  C04B24/26 ,  C04B24/32 ,  C04B111/72 ,  C08F2/30 ,  C08F220/10 ,  C08F220/18 ,  C08F290/06 ,  C09D1/08 ,  C09D5/34 ,  C09K3/10

Abstract: Cement-based compositions comprising per 100 parts by weight of cement from 1 to 500 parts by weight of a polymer built up froma) 30-99.5% by weight of at least one alkyl ester of (meth)acrylic acid,b) 0-70% by weight of at least one vinylaromatic,c) 0.5-10% by weight of at least one alkyl polyethoxy(meth)acrylate of the formulawhere R1 is a hydrogen atom or a methyl group, R2 is a C1 to C4 alkyl group and n is an integer from 1 to 55,d) 0-10% by weight of at least one ethylenically unsaturated mono- or dicarboxylic acid, such as acrylic acid, methacrylic acid, maleic acid, itaconic acid, or anhydride, amide or hydroxyalkylamide thereof,e) 0-10% by weight of acrylonitrile or methacrylonitrile, andf) 0-50% by weight of further ethylenically unsaturated compounds other than a) to e).

公开(公告)号：DE50301117D1

公开(公告)日：2005-10-13

申请号：DE50301117

申请日：2003-01-30

Applicant: BASF AG

Inventor： LAUBENDER DR ,  GERST DR ,  RECK DR

IPC: C08F265/02 ,  C08F267/02 ,  D04H1/587 ,  C08L51/00 ,  D04H1/64

Abstract: Preparing an aqueous polymer dispersion comprises supplying at least one portion of ethylenically unsaturated monomers, a portion of water, at least one portion of polymer synthesized from ethylenically unsaturated monocarboxylic and/or dicarboxylic acid, ethylenically unsaturated compound(s) and further monomers, and at least portions of auxiliaries to a polymerization vessel together, without an emulsion being formed through a feed line. Preparing an aqueous polymer dispersion including dispersed polymer particles of addition polymer A1 obtainable by semi-continuous free-radical emulsion polymerization of ethylenically unsaturated monomers in the presence of an addition polymer A2 comprises supplying portion(s) of the ethylenically unsaturated monomers, a portion of water, portion(s) of the polymer A2 and, if desired, at least portions of further auxiliaries to the polymerization vessel together, without an emulsion being formed through a feed line. The addition polymer A2 is synthesized from 50-99.5 wt.% ethylenically unsaturated monocarboxylic and/or dicarboxylic acid, 0.5-50 wt.% ethylenically unsaturated compound(s) and up to 20 wt.% further monomer(s). The ethylenically unsaturated compound is ester of ethylenically unsaturated monocarboxylic acid or monoester and diester of ethylenically unsaturated dicarboxylic acid with an amine containing hydroxyl group(s).