公开(公告)号：DE59704509D1

公开(公告)日：2001-10-11

申请号：DE59704509

申请日：1997-06-05

Applicant: BASF AG

Inventor： PAKUSCH DR ,  ROSER DR ,  ANGEL DR ,  DRAGON ANDREE

IPC: C04B24/26 ,  C04B40/00 ,  C04B40/06 ,  C08J3/12 ,  C08J3/16 ,  C08K3/24 ,  C08L1/00 ,  C08L29/04 ,  C08L33/10 ,  C08L33/26 ,  C08L35/00 ,  C08L39/06 ,  C08L61/00 ,  C08L83/04 ,  C08L97/00 ,  C08L101/00 ,  C08L101/02

Abstract: The production of polymer powder (I) suitable for the modification of mineral binder building materials, involves drying an aqueous polymer dispersion which forms films with a Tg of not above 30 degrees C, where before drying, the dispersion is treated with drying agents (IIa) which have a liquefying action on the mineral binder when it is mixed with water and ready for use; after drying, the powder (I) is treated with finely divided solid additive(s) (IIIa) which have a solidifying action on the binder/water mix. Alternatively, the dispersion is treated with solidifying driers (IIb) before drying, and the dried powder is treated with finely divided solid additives (IIIb) which have a liquefying action on the mix. Also claimed are: (i) polymer powder (I) obtained by this process; (ii) mineral binders containing (I); and (iii) dry mortar preparations containing 20-60 wt% mineral binder, 0.1-20 wt% (I) and up to 25 wt% conventional additives, the remainder consisting of sand, fillers, pigments and natural and/or synthetic fibres.

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.