'BINDING AGENT MIXTURE, COATING AGENTS CONTAINING SAID BINDING AGENT MIXTURE, AND COATINGS PRODUCED FROM SAID COATING AGENTS, SAID COATINGS HAVING A HIGH SCRATCH RESISTANCE, HIGH WEATHERING STABILITY, AND GOOD OPTICAL PROPERTIES'

摘要

The invention relates to binder mixtures comprising at least one hydroxyi-containing compound (A), and at least 1.0% by weight, based on the nonvolatile constituents of the binder mixture, of at least one phosphorus-and nitrogen-containing catalyst (D) for the crosslinking of silane groups, wherein the mixtures comprise as hydroxyl-containing compound (A) at least one hydroxyl-functional polyester in which on average at least one hydroxyl function of the polyester is esterified with at least one C8 to C9 monocarboxylic acid, and at least one catalyst (D) is blocked with at least one tertiary amine of the formula (I) where R1 is an acyclic aliphatic or araliphatic hydrocarbon radical having at least 3 C atoms, R2 is an acyclic aliphatic or araliphatic hydrocarbon radical which is the same or different from R1 and/or R3, and R3 is hydrogen or an acyclic aliphatic or araliphatic hydrocarbon radical which is the same or different from R1 and/or R2. The present invention also providers coating compositions based on the binder mixture and further provides a multistage coating method using these coating compositions, and also provides for the use of the coating compositions as clearcoat material for producing multicoat effect and/or color paint systems, and application of the coating method for automotive OEM finishing and automotive refinish.