Preservation of a mineral molding
AssigneeBASF SE
InventorsBernd Reck, Gernot Franzmann, Bertold Bechert, Reinhard Bächer, Gerd Rehmer
Life of this patent
Estimating the term…
Abstract
In a process for preserving a mineral molding by coating the surface of the mineral molding with an aqueous composition comprising an aqueous polymer dispersion, the dispersed polymer P comprises an ethylenically unsaturated acid of the 2-acrylamido-2-methylpropanesulfonic acid type polymerized into it in free-radically polymerized form.
Claims26
A process for preserving a mineral molding by coating the surface of the mineral molding with an aqueous composition which comprises an aqueous polymer dispersion whose dispersed polymer P comprises at least one ethylenically unsaturated acid and/or its conjugate base polymerized there into in free-radically polymerized form, wherein the polymer P of the aqueous polymer dispersion comprises at least one monomer of formula I
- where the variables have the following meanings:
- n is 0 to 2,
- R1, R2, R3 are, independently of one another, hydrogen or methyl,
- X is oxygen or imino (NH) and
- Y is hydrogen, alkali metal or ammonium,
- polymerized there into in free-radically polymerized form.
Dependencies are inferred from the claim text.