AQUEOUS COPOLYMER DISPERSIONS WITH REACTIVE DILUENT

• Main Authors: GERTZMANN ROLF DR, HOFACKER STEFFEN DR, MUNZMAY THOMAS DR, YUVA NUSRET DR, MECHTEL MARKUS DR
• Format: Patent
• Language: English; Slovenian
• Published: 31.12.2010
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; 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; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

An aqueous copolymer dispersion comprises hydroxy-functional copolymer(s) prepared from (a) hydroxy-free (meth)acrylic ester(s) and/or vinylaromatics, (b) hydroxy-functional (meth)acrylic ester(s), (c) ionic and/or potential ionic monomer(s) capable of free-radical copolymerization, and (d) optionally monomer(s) other than components (a)-(c) and capable of free-radical copolymerization; and hydroxy-functional polycarbonate polyol(s) as reactive diluent. Independent claims are included for: (1) preparation of aqueous copolymer dispersion by free-radically polymerizing monomer mixture(s) containing components (a)-(d) in the presence of hydroxy (OH)-functional polycarbonate polyols as reactive diluent, and subsequently dispersing the resulting copolymers in water before or after the addition of a neutralizing agent; (2) an aqueous coating composition comprising the above aqueous copolymer dispersion(s) and OH-reactive crosslinker(s); (3) formation of coatings by applying a coating composition to a substrate and subsequently curing the coating composition; and (4) a substrate coated with the coating composition.