Aqueous dispersions

• Main Authors: BILLIANI JOHANN, PIETSCH CLAUDIA, LUNZER FLORIAN, STEINER ANDREAS, HYDEN WOLFGANG, GOBEC MICHAEL, ZIRNGAST MICHAELA
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2017
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; 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

The present invention relates to an aqueous dispersion obtained by a process comprising the steps of (a) preparing an acidic copolymer (A) by radical copolymerization of monomers comprising: (a1) at least one unsaturated fatty acid, (a2) at least one ethylenically unsaturated monomer containing at least one acid group or group capable of forming an acid group, (a3) at least one other ethylenically unsaturated monomer different from (a1) and (a2), (b) neutralizing totally or partially the acid groups of copolymer (A) and dissolving it in water, (c) copolymerizing in the solution obtained at step (b) a monomer mixture different from the monomer mixture of step (a) to form a copolymer (B)as well as blends based on such dispersions, especially in combination with oxidatively drying alkyds. 本发明涉及种通过包括下述步骤的方法获得的含水分散体：(a)通过自由基共聚包括下述的单体制备酸性共聚物(A)：(a1)至少种不饱和脂肪酸，(a2)含有至少个酸基或能形成酸基的基团的至少种烯键式不饱和单体，(a3)与(a1)和(a2)不同的至少种其它烯键式不饱和单体，(b)完全或部分中和共聚物(A)的酸基并使之在水中溶解，(c)在步骤(b)获得的溶液中共聚与步骤(a)的单体混合物不同的单体混合物，形成共聚物(B)，以及基于这种分散体、特别地与氧化干燥性醇