Patent ID: 6306460
Filing Date: 2001-10-23
Classification: C04B,C08F,C09D

Abstract:
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 ##STR7##where the variables have the following meanings:n is 0 to 2,R.sup.1, R.sup.2, R.sup.3 are, independently of one another, hydrogen or methyl,X is oxygen or imino (NH) andY is hydrogen, alkali metal or ammonium,polymerized there into in free-radically polymerized form.