Abstract: A process for the production of aqueous binder latices by multistage emulsion polymerization in the aqueous phase, comprising the successive steps: 1) free-radical polymerization of a mixture A of olefinically unsaturated, free-radically polymerizable monomers, comprising at least one monomer with at least one acid group in a proportion corresponding to an acid value of mixture A of 10 to 100 mg of KOH/g and 0.5 to 5 wt.

Abstract: The invention is directed to a process for multilayer coating of substrates comprising the following steps: 1. applying a base coat layer of a water-based colour- and/or special effect-imparting base coat composition onto an optionally precoated vehicle substrate, 2. optionally drying or curing the base coat layer obtained in step 1, 3. applying a clear coat layer of a transparent clear coat onto the base coat layer and 4.

Abstract: Coating system for the preparation of aqueous coating compositions used for the preparation of waterborne basecoats for the coating of vehicles and vehicle parts in vehicle repair coating, containing: A) 55-95 wt-% of at least one special effect composition, containing at least 15 wt-% water, special effect pigments, at least one water-dilutable resin selected from the group of polyurethane, polyester, and poly(meth)acrylate resins, and optionally organic solvents and additives conventionally used I coating, and B) 5-45 wt-% of a pigment-free component, containing: B1) 0.3-5.0 wt-% of at least one inorganic layered silicate, B2) 1.0-20.0 wt-% of at least one water-dilutable polyurethane resin, which optionally can be modified B3) 75.0-98.7 wt-% water; And optionally organic solvents and additives conventionally used in coating, whereby the wt-% of A and B total 100 wt-% and the wt-% of B1, B2 and B3 total 100 wt-% of component B.

Abstract: The invention relates to an aqueous binder dispersion for physically drying coating agents, which contains a mixture ofA) 20-80 wt. % of one or more, carbonate group-containing polyurethanes with a number average molecular weight (Mn) of 70,000 to 500,000 in the form of an aqueous dispersion, andB) 20-80 wt. % of one or more carbonate group-free and preferably urea group-free polyurethane resins containing ionic groups, with a number average molecular weight (Mn) of 10,000 to 300,000 and an acid value of 5 to 50, in the form of an aqueous dispersion,the wt. % of the components A) and B), in each case referred to the resin solids, amounting to 100%.