| 摘要 |
Producing jointing mortars, comprises obtaining copolymers of ethylenically unsaturated monomers and ethylenically functionalized nanoparticles in the form of their aqueous polymer dispersions or water-redispersible polymer powder by radically initiated polymerization in an aqueous medium, and optionally subsequently drying the resulting polymer dispersion. Producing jointing mortars, comprises obtaining copolymers of ethylenically unsaturated monomers and ethylenically functionalized nanoparticles in the form of their aqueous polymer dispersions or water-redispersible polymer powder by radically initiated polymerization in an aqueous medium, and optionally subsequently drying the resulting polymer dispersion of (A) one or more monomers comprising vinyl esters, (meth)acrylic acid esters, vinyl aromatics, olefins, 1,3-dienes, vinyl ethers and vinyl halides, and optionally further monomers copolymerizable with them, in the presence of (B) at least one particle-P having an average diameter of = 1000 nm, which is functionalized with ethylenically unsaturated, radically polymerizable groups, where: the component (B) contains (B1) metal oxides or semimetal oxides, and/or (B2) silicone resins that are produced from silicon group-containing repeating units of formula (R4 ( p + z )SiO ( 4 - p -z ) / 2) (II); and the components (B1) and (B2) are functionalized with one or more alpha -organosilane compounds of formula ((R1O) 3 - n(R2) nSi-(CR3 2)-X) (I). R4 : H or hydroxy, or 1-18C-alkyl, -cycloalkyl, -aryl, -alkoxy or -aryloxy (all optionally substituted), where p+z is = 0-3 for at least 20 mol% of the respective silicone resin; R1 : H, 1-6C-alkyl or aryl; R2, R3 : H, 1-12C-alkyl or aryl; n : 0-2; and X : 2-20C-hydrocarbon radical having an ethylenically unsaturated group. An independent claim is included for the jointing mortars obtained by the process. |
