Use of multi-stage polymerizate dispersions to coat metal sheets

• Main Authors: JAHNS EKKEHARD, ROLLER SEBASTIAN, DENU HANS-JUERGEN, KUREK ALEXANDER
• Format: Patent
• Language: English
• Published: 22.04.2015
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to the use of aqueous multi-stage polymerizate dispersions, which can be obtained by radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase and a stage ratio of hard to soft of 25 to 95 wt% to 75 to 5 wt%, wherein the glass transition temperature (Tg) of the soft phase as the first stage is -30 to 0 DEG C and the glass transition temperature of the hard phase as the second stage is 20 to 60 DEG C, containing at least one monomer of general formula (I) in which the variables have the following meaning: n = 0 to 2, R1, R2, R3 = hydrogen or a methyl group independently of each other, X = O or NH, Y = H, alkali metal, NH4, to coat metal sheets.