摘要:
The invention relates to an aqueous coating agent for metal substrates, comprising a water-dispersible and/or water-soluble polymer P with a gradient in the concentration of covalently bonded hydrophilic groups along the polymer backbone, wherein the polymer P has covalently bonded ligands A which form chelates with the metal ions released on corrosion of the substrate and/or the substrate surface and cross-linked functional groups B which can form covalent bonds with itself, with further complementary functional groups B' on the polymer P and/or with further functional groups B and/or B' on cross-linkers V.
摘要:
The invention relates to a method for producing molded parts, according to which a pigmented coating agent (P) and a radically cross-linkable coating agent (K), which after final cross-linking produces a transparent coating (KE), are applied to a support film, the coating agent (K) is used to produce a dried but not finally cross-linked coating(KT), the coated support film is shaped and back-injected or back-foamed with a liquid plastic material, and the coating (KT) is allowed to cure or post-cure unless it has already done so. The cross-linkable coating agent (K) comprises a radically cross-linkable component (KK) which has H-bridging structure elements in such an amount that 1) a not finally cross-linked coating (MT) produced from the mixture (M) of component (KK) with additives has a ratio of storage modulus G(MT)' to loss modulus G(MT)' of 5 to 200, G(MT)' and G(MT)' being determined at 20 °C by rheological oscillation measurements, and 2) a finally cross-linked coating (ME) produced from the mixture (M) of component (KK) with additives has a storage modulus E(ME)' of 1.0 * 107.0 to 8.0 * 107.0 Pa, whereby E(ME)' is measured by dynamic mechanical thermal analysis in the rubber-elastic range.
摘要:
The invention relates to color- and/or effect-producing, single-layer or multi-layer films that contain or consist of a color- and/or effect-producing layer, producible by (1) continuously applying a partial quantity of a base paint (A), using a directional application method, onto a carrier, the application device (1) and the carrier being displaced relative to each other, thereby building a partial layer of the color- and/or effect-producing layer, (2) continuously applying, once or repeatedly, the remaining quantity of the base paint (A) and/or a base paint (B) that is different from the base paint (A) onto the partial layer (1) thus formed by way of an application method (2) that induces in the resulting partial layer (2) no orientation of the pigments in a preferred direction, the application device (2) and the carrier being displaced relative to each other, thereby further building or completing the color- and/or effect-producing layer, and (3) drying or partially or completely curing the color- and/or effect-producing layer. The invention further relates to a method for producing said films and to the use of said films.
摘要:
The invention relates to transparent coating powder dispersions (transparent coating powder slurry) which can be produced by adding a secondary (meth) acrylate copolymer dispersion in a liquid form and/or in a powder form to a powder slurry during and/or after the production thereof. The invention also relates to the use thereof in the production of transparent lacquers, especially colour and or effect multicoat lacquers.
摘要:
The invention relates to a colour and/or effect-imparting paint coating for a primed or unprimed substrate, containing a combined effect layer. Said combined effect layer can be produced from a pigmented powder slurry.
摘要:
The invention relates to a coating agent containing a) one or more polyester resins (A); b) one or more polyacrylate resins (B); c) one or more di- and/or polyiscyanates (C) with free or blocked isocyanate groups; d) one or more light stabilizers (L1) based on a UV absorber; e) one or more light stabilizers (L2) based on sterically hindered amines; and f) one or more organic solvents (D). The coating agent is characterized in that 1) the polyester (A) has a hydroxyl number of 80-200 mg KOH/g and an acid number
摘要:
The invention relates to a sol-gel coating material containing (A) an acrylate copolymer solution containing at least one acrylate copolymer (A1); (B) a parent varnish which can be prepared by hydrolysis and condensation of at least one hydrolysable silane (B1) of the general formula (I) SiR4, in which the variable R = hydrolysable groups, hydroxy groups and non-hydrolysable groups, provided that there should be at least one, preferably two, hydrolysable groups; and (C) an additive solution containing c1) at least one ethylenically unsaturated compound containing at least one epoxide group; c2) at least one silane (B1) with at least one non-hydrolysable group R presenting at least one epoxide group; and c3) at least one adduct of at least one silane (B1) with at least one non-hydrolysable group R presenting at least one amino group and at least one cyclic ethylenically unsaturated dicarboxylic acid anhydride. The invention also relates to the use of said sol-gel coating material for producing scratchproof sol-gel coatings.