公开(公告)号：DE59610369D1

公开(公告)日：2003-05-28

申请号：DE59610369

申请日：1996-10-17

Applicant: BASF AG

Inventor： PAKUSCH DR ,  DIEING DR ,  TROPSCH DR

IPC: C08L33/14 ,  C08F6/00 ,  C08F6/14 ,  C08J3/16 ,  C08L33/04 ,  C08L33/24 ,  C09D5/00 ,  C09D5/02 ,  C09J11/08 ,  C09J201/00

Abstract: The production of polymer powder comprises drying an aqueous dispersion of a polymer (A) in which the dispersed particles have a positive or negative electric charge on the surface. The process comprises adding, as auxiliary drying agent, a polyelectrolyte (B) which, in its dissociated form as poly-ion and counter-ion is soluble in the aqueous dispersion medium and in which the charge on the poly-ion is opposite to the surface charge on the dispersed polymer. Also claimed are: (i) the polymer powder obtained by this process; and (ii) the polymer powder containing charged spherical particles of (A) and a polyelectrolyte (B).

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：DE50104674D1

公开(公告)日：2005-01-05

申请号：DE50104674

申请日：2001-10-06

Applicant: BASF AG

Inventor： CHRISTIE DR ,  PAKUSCH DR ,  WISTUBA DR ,  SEIBERT HORST ,  FICKEISEN PETER

IPC: C08L25/10 ,  C08F236/10 ,  C08K5/00 ,  C09J109/02 ,  C09J109/06 ,  C09J113/00 ,  C09J125/10 ,  C09J133/20

Abstract: Aqueous compositions containing a filler and a copolymer based on a vinyl aromatic monomer and a conjugated diene, in which the copolymer also contains 0.1-4.5 wt.% of monomer unit(s) with acid or acid anhydride group(s) and optionally a water-soluble monomer without acid or anhydride groups. Aqueous compositions (I) containing: (A) a polymer (1-60 wt.%) based on: (a) a vinyl aromatic monomer with up to 20 carbon atoms (10-50 wt.%); (b) a non-aromatic hydrocarbon with two conjugated double bonds (45-75 wt.%); (c) a water-soluble monomer containing no acid or acid anhydride groups, with a solubility of at least 100 g/l water at 21 degrees C and 1 bar (0-20 wt.%); (d) a monomer with acid or anhydride group(s) (0.1-4.5 wt.%); and (e) other monomers (0-30 wt.%); and (B) a filler (40-99 wt.%) An Independent claim is also included for substrates coated with (I).

公开(公告)号：DE59610368D1

公开(公告)日：2003-05-28

申请号：DE59610368

申请日：1996-10-15

Applicant: BASF AG

Inventor： PAKUSCH DR ,  SCHULER DR ,  MAECHTLE DR ,  BAUMSTARK DR

IPC: C08F6/00 ,  C08F6/14 ,  C08L33/14 ,  C08J3/12 ,  C08L33/04 ,  C08L33/06 ,  C08L33/24 ,  C08L41/00 ,  C08L101/00 ,  C09D5/00 ,  C09D5/02 ,  C09J11/08 ,  C09J201/00

Abstract: The process for drying aqueous dispersions of a polymer (B), in which the dispersion contains, as auxiliary drying agent, at least one polymer (A) containing (in polymerised form) 80-100 wt.% monomer(s) (a) of formula CH2CR1C(O)XCR2R3-R4-SOH (I) or salts thereof and 0-20 wt.% other radically polymerisable monomer(s) (b), in which R1-3 = H or 1-3 C alkyl; R4 = 1-5 C alkylene; and X = O or NH. Also claimed are: (i) the polymer powder containing (A) and (B); (ii) the mineral binder containing such polymer powder(s); (iii) the synthetic resin-plaster drying preparation containing such powder(s); (iv) the aqueous polymer dispersions of (B) with an emulsifier content of not more than 2 wt.%, containing (A) with a Mw of 5000-35,000 as added dispersant; (v) the process for the radical aqueous emulsion polymerisation of ethylenic monomers, in which (A) with a Mw of 5000-35000 is added before, during or after polymerisation; and (vi) the polymer powder obtained by drying as above.

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.