The invention relates to aqueous dispersions comprising multistage-prepared polymers, and also to coating material compositions comprising them, preparable by multistage polymerization of olefinically unsaturated monomers, using an emulsifier and a water-soluble initiator, under conditions of starved feed polymerization, and using particular monomer mixtures in the individual stages. The invention also relates to a pigmented aqueous basecoat material comprising the aqueous dispersion of the invention, to the use of the aqueous dispersion of the invention in aqueous basecoat materials for improving adhesion, to a process for producing a multicoat paint system on a substrate, and to a multicoat paint system produced in accordance with the stated process.

A method of forming a multilayer coating on a substrate is provided. The multilayer coating exhibits reduced strike-in and mottling. The method includes the steps of providing the substrate including a primer disposed thereon, applying a basecoat composition on the primer, applying a clearcoat composition on the basecoat composition, and curing the basecoat composition and the clearcoat composition to form the multilayer coating on the substrate. The basecoat composition includes a film forming resin, a pigment, and about 5% to about 75% by weight on binder of a cyclic lactone modified branched acrylic polymer having a hydroxyl monomer content of about 1% to 65% by weight, all or part of which has been reacted with a cyclic lactone, and having a weight average molecular weight (Mw) of about 10,000 to about 150,000 g/mol.

The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one compound of the formula (I)
X.sub.1YX.sub.2(I)
in which
X.sub.1 and X.sub.2, independently of one another, are each a functional group which is reactive toward hydroxyl groups, and Y is a divalent aliphatic or araliphatic, carboxy-functional organic radical having a number-average molecular weight of 100 to 1000 g/mol,
with
(b) at least one polyether of the general structural formula (II) ##STR00001##
in which
R is a C.sub.3 to C.sub.6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 200 to 4000 g/mol, where components (a) and (b) are used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possesses a number-average molecular weight of 500 to 15 000 g/mol and an acid number of 10 to 120 mg KOH/g.

Disclosed herein are a method for producing materials having at least one carbamate functionality, carbamate-functional materials obtained from the process, coating compositions including said carbamate-functional materials, and a process for at least partially coating a substrate with the coating compositions. The method disclosed herein reduces unwanted transesterification which can occur as a side reaction by using a tertiary alkyl carbamate in combination with a tin catalyst and thus results in increased yields and purity of the carbamate-functional materials.

Described herein is a method for producing a multicoat paint system by producing a basecoat or a plurality of directly successive basecoats directly on a substrate coated with a first coat, producing a clearcoat directly on the one or the topmost of the plurality of basecoats, and subsequently jointly curing the one or the plurality of basecoats and the clearcoat. At least one of the basecoat materials is admixed, directly before application, either with an aqueous dispersion (D1) including a polyamide (PA) having an acid number of 15 to 60 mg KOH/g or with an aqueous dispersion (D2) including a polyamide (PA) and an amide wax (AW).

The method for producing a repair sheet includes: attaching a nonpolar resin plate to an appropriate position on a dummy vehicle body corresponding to a repair area including a coating film in need of repair; supplying the dummy vehicle body to a topcoat application line and forming a pigment layer on a nonpolar resin plate and a clear layer on a nonpolar resin plate under a condition equal to that for topcoat application to a vehicle body to be actually coated; and supplying the dummy vehicle body to a coating drying line and drying the nonpolar resin plate having the pigment layer and the nonpolar resin plate having the clear layer formed thereon under a condition equal to that for coating drying of the vehicle body to be actually coated.

The present invention relates to a panel, in particular a wall, ceiling or floor panel, comprising a carrier plate (12) based on polyvinyl chloride with a density of, for example, 900 to 2,500 kg/m.sup.3 and a film (17) applied thereon. The film is a thin PVC-film and comprises a decorative pattern (18) directly printed thereon.

A matte clear coating composition for an aluminum member, comprising acrylic resin (A) having a hydroxy value of 100 to 200 mgKOH/g; melamine resin (B); silica particles (C) having an average particle size of 1.0 to 15 m; and polyolefin wax (D) having an average particle size of 10 to 40 m and a melting point of 145 C. to 180 C., the matte clear coating composition comprising 5 to 20 mass % of silica particles (C) and 3 to 15 mass % of polyolefin wax (D) based on the total solids content of acrylic resin (A) and melamine resin (B). The matte clear coating composition for an aluminum member satisfies both corrosion resistance and abrasion resistance (scratch resistance).

The present invention relates to a method of treating PVC plates as well as plates and panels manufactured by this method. Further, the invention relates to plates and panels, in particular wall, ceiling or floor panels, comprising a heat-treated carrier plate (12) based on polyvinyl chloride with a density of, for example, 900 to 2,500 kg/m.sup.3 and a film (17) applied thereon. The film is a thin PVC-film and comprises a decorative pattern (18) directly printed thereon.

The invention provides a method of forming a multilayer coating film with excellent flip-flop properties and smoothness, allowing formation of a high-design multilayer coating film. In a method of forming a multilayer coating film comprising a low-brightness intercoating film, a first base coating film and a second base coating film formed on an object to be coated, and a clear coating film formed on the second base coating film, a multilayer coating film that includes a first base coating film obtained by applying a first aqueous base coating material, a second base coating film obtained by applying a second aqueous base coating material containing a brightness pigment, and a clear coating film, with specific compositions and properties, is formed on a low-brightness intercoating film by a wet-on-wet method and is heat cured to form a cured multilayer coating film.