摘要:
Disclosed is a hyperbranched, dendritic, hydroxyl-functional polyester comprising an OH number greater than or equal to 180 mg KOH/g as measured via DIN 53240 and to clearcoat compositions comprising said polyesters. Also disclosed are processes for preparing the disclosed polyester, methods of making coated automotive substrates by applying the disclosed clearcoat compositions to automotive substrates, and to coated substrates made therefrom.
摘要:
Structurally viscous, curable, aqueous powder dispersions free entirely or substantially from organic solvents and comprising dimensionally stable particles (A) having an average particle size as measured by the laser diffraction method of D (v, 0.5)=1 to 10 μm, the dimensionally stable particles (A) comprising as binder 10% to 100% by weight of at least one (meth)acrylate copolymer (A1) having an OH number of 40 to 250 mg KOH/g and an acid number of 5 to 100 mg KOH/g and prepared by multistage copolymerization of(a11) hydroxyl-containing acrylate and/or methacrylate monomers and(a12) acid-group-containing olefinically unsaturated monomers in organic solution, where(1) in one stage the entirety or predominant fraction of monomers (a11), if appropriate together with a small fraction of the monomers (a12), has been (co)polymerized, before(2) in a further stage the entirety or predominant fraction of monomers (a12), if appropriate together with the remainder of monomers (a11), has been co)polymerized;process for preparing them; and their use.
摘要:
Disclosed is a hyperbranched, dendritic, hydroxyl-functional polyester comprising an OH number greater than or equal to 180 mg KOH/g as measured via DIN 53240 and to clearcoat compositions comprising said polyesters. Also disclosed are processes for preparing the disclosed polyester, methods of making coated automotive substrates by applying the disclosed clearcoat compositions to automotive substrates, and to coated substrates made therefrom.
摘要:
Curable mixtures free from compounds of molybdenum and of tungsten and comprising (A) at least one constituent containing blocked isocyanate groups (a1) and isocyanate-reactive functional groups (a2), and (B) at least one cesium compound; processes for preparing them, and their use.