摘要:
Process for producing multicoat color and/or effect paint systems comprising a color and/or effect basecoat (A) and a transparent topcoat (B) by a wet-on-wet method using a color and/or effect coating material (A) and a transparent coating material (B), the coating material (A) being prepared by separately preparing an aqueous, structurally viscous powder dispersion (A1), in an amount, based on (A), of 50% to 100% by weight, mixing it with the other constituents (A2) of the coating material (A), and homogenizing the resulting mixtures (A).
摘要:
A process for producing moldings, in which a solventborne or aqueous, pigmented coating composition (P) and a free-radically crosslinkable coating composition (K), which after crosslinking to completion produces a transparent coating (KE) are applied to a support sheet, a dried but as yet not completely crosslinked coating (KT) is produced from the coating composition (K), the coated support sheet is shaped and is injection backmolded or foam-backed with a liquid polymeric material, and the coating (KT)—if this has not already taken place—is cured or aftercured; the crosslinkable coating composition (K) comprising a free- radically crosslinkable component (KK) which comprises carbamate and/or biuret and/or allophanate and/or urea and/or amide groups.
摘要:
A process for producing moldings, in which a pigmented coating composition (P) and a free-radically crosslinkable coating composition (K), which after crosslinking to completion produces a transparent coating (KE) are applied to a support sheet a dried but as yet not completely crosslinked coating (KT) is produced from the coating composition (K), the coated support sheet is shaped and is injection backmolded or foam-backed with a liquid polymeric material, and the coating (KT)—if this has not already taken place—is cured or aftercured; the crosslinkable coating composition (K) comprising a free-radically crosslinkable component (KK) which contains hydrogen bond forming structural elements in an amount such that 1. a coating (MT) produced from the mixture (M) of component (KK) with additives, but as yet not crosslinked to completion, has a ratio of storage modulus G(MT)′ to loss modulus G(MT)″ of from 5 to 200, G(MT)′ and G(MT)″ having been determined at 20° C. by means of rheological oscillation measurements, and 2. a coating (ME) produced from the mixture (M) of component (KK) with additives and crosslinked to completion has a storage modulus E(ME)″ of from 1.0*107.0 to 8.0*107.0 Pa, E(ME)′ having been measured in the rubber-elastic range by dynamic mechanical thermal analysis.
摘要:
Disclosed herein is a refinish sheet produced by (1) coating one side of a temporary carrier sheet (A) with at least one aqueous coating material (B) comprising at least one free-radically crosslinkable binder (B1) having a glass transition temperature of −70 to +50° C., an olefinically unsaturated double bond content of 2 to 10 eq/kg, and an acid group content of 0.05 to 15 eq/kg to produce at least one resultant layer (B); and (2) drying but not curing, or only part-curing, the at least one resultant layer (B) to produce at least one dried, uncured or part-cured layer (B). Also disclosed is a method of repairing a surface of a coated substrate using the refinish sheet.
摘要:
Powder slurries curable thermally and with actinic radiation and comprising solid and/or highly viscous particles dimensionally stable under storage and application conditions, including at least one binder free of carbon-carbon double bonds activatable with actinic radiation, comprising at least one (meth)acrylate copolymer containing on average per molecule at least one isocyanate-reactive functional group and at least one ion-forming group; at least one blocked and/or part-blocked polyisocyanate; and at least one olefinically unsaturated constituent which is free of isocyanate-reactive functional groups and contains on average per molecule at least one isocyanate group blocked with pyrazole or with at least one substituted pyrazole and at least two carbon-carbon double bonds which can be activated with actinic radiation, prepared by reacting at least one polyisocyanate with pyrazole and/or with at least one substituted pyrazole and also with at least one compound containing an isocyanate-reactive functional group and at least two carbon-carbon double bonds activatable with actinic radiation, processes for preparing them, and their use.
摘要:
A process is disclosed for producing moldings, in which a pigmented coating composition (P) and a free-radically crosslinkable coating composition (K), which after crosslinking to completion produces a transparent coating (KE) are applied to a support sheet, wherein a dried but as yet not completely crosslinked coating (KT) is produced from the coating composition (K), the coated support sheet is shaped and is injection backmolded or foam-backed, and the coating (KT) is cured or aftercured; the crosslinkable coating composition (K) comprising a free-radically crosslinkable component (KK) which contains hydrogen bond forming structural elements.
摘要:
The invention relates to a radiation-curable laminated sheet or film comprising at least one substrate layer and a top layer which comprises a radiation-curable material having a glass transition temperature below 50° C. and having a high double bond density and acid groups, processes for the production thereof and the use thereof.
摘要:
Disclosed herein is a refinish sheet produced by (1) coating one side of a temporary carrier sheet (A) with at least one aqueous coating material (B) comprising at least one free-radically crosslinkable binder (B1) having a glass transition temperature of −70 to +50° C., an olefinically unsaturated double bond content of 2 to 10 eq/kg, and an acid group content of 0.05 to 15 eq/kg to produce at least one resultant layer (B); and (2) drying but not curing, or only part-curing, the at least one resultant layer (B) to produce at least one dried, uncured or part-cured layer (B). Also disclosed is a method of repairing a surface of a coated substrate using the refinish sheet.
摘要:
Aqueous, structurally viscous powder dispersions curable by free-radical polymerization, substantially or entirely free from volatile organic compounds, and comprising as their disperse phase solid and/or highly viscous particles (A) which are dimensionally stable under storage and application conditions and have a z-mean average particle size as measured by photon correlation spectroscopy of 80 to 750 nm, the particles (A) comprising at least one free-radically crosslinkable binder (A1) having a glass transition temperature of −70 to +50° C., an olefinically unsaturated double bond content of 2 to 10 eq/kg and an acid group content of 0.05 to 15 eq/kg, in an amount, based on (A), of 50 to 100% by weight; process for their preparation, and their use.