摘要:
The present invention relates to coating material compositions comprising at least one polyhydroxyl group-containing compound (A), at least one polyisocyanate group-containing compound (B) having free and/or blocked isocyanate groups, and at least one catalyst (D) based on a zinc-amidine complex which is preparable by reaction of 1.0 moles of at least one zinc(II) biscarboxylate with less than 2.0 moles of at least one amidine where R5 = hydrogen and R1, R2, R3, and R4 are each identical or different radicals, R1 and R3 being hydrogen or an alkyl radical or an aryl radical, and R2 and R4 being an alkyl radical or an aryl radical. The present invention additionally provides multistage coating methods using these coating material compositions, and also the use of the coating material compositions as clearcoat material, and application of the coating method for automotive refinish and/or for the coating of plastics substrates and/or of utility vehicles.
摘要:
The invention relates to coating agent compositions, containing an isocyanate-group-containing component, a hydroxyl-group-containing component, a zinc-imidazole-carboxylate complex and a monomeric aromatic carbonic acid, and to the use of a zinc-imidazole-carboxylate complex in the presence of a monomeric aromatic carbonic acid as a catalyst system for the urethane reaction in coating agent compositions.
摘要:
The present invention relates to coating material compositions comprising at least one polyhydroxyl group-containing compound (A), at least one polyisocyanate group-containing compound (B) having free and/or blocked isocyanate groups, and at least one catalyst (D) based on a zinc-amidine complex which is preparable by reaction of 1.0 moles of at least one zinc(II) biscarboxylate with more than 2.0 moles of at least one amidine (I) where R5 = hydrogen and R1, R2, R3, and R4 are each identical or different radicals, R1 and R3 being hydrogen or an alkyl radical or an aryl radical, and R2 and R4 being an alkyl radical or an aryl radical, and comprises at least one monomeric aromatic, optionally substituted carboxylic acid (S) whose carboxyl group is in conjugation with a ?-electron system. The present invention additionally provides multistage coating methods using these coating material compositions, and also the use of the coating material compositions as clearcoat material, and application of the coating method for automotive refinish and/or for the coating of plastics substrates and/or of utility vehicles.
摘要:
Described are coating material compositions comprising an isocyanate group-containing component, a hydroxyl group-containing component, and a zinc (1-methylimidazole)bis(2-ethylhexanoate) complex. Also described is the use of a zinc (1-methylimidazole)bis(2-ethylhexanoate) complex as a catalyst system for the urethane reaction in coating material compositions.
摘要:
The present invention relates to coating agent compositions comprising at least one compound (A) containing polyhydroxyl groups, at least one compound (B) containing polyisocyanate groups, said compound having free and/or blocked isocyanate groups, and at least one catalyst (D) based on a zinc amide complex that can be produced by reacting 1.0 moles of at least one zinc (II) biscarboxylate with 2.0 moles of at least one amidine, wherein R5 = hydrogen and R1, R2, R3, and R4 are each identical or different radicals, R1 and R3 being hydrogen or an alkyl radical or an aryl rest, and R2 and R4 being an alkyl radical or an aryl radical, characterized in that the coating agent composition additionally comprises at least one monomeric aromatic, optionally substituted carboxylic acid (S), the carboxyl group thereof being in conjugation with an n-electron system. The invention further relates to a multistage coating method using said coating agent compositions, and to the use of the coating agent compositions as clear coating material and the use of the coating method for automotive repair painting and/or for coating plastic substrates and/or commercial vehicles.
摘要:
The invention relates to moisture-curing coating compositions based on aprotic solvents, comprising (A) at least one binder having alkoxysilane groups and (B) at least one crosslinking catalyst, characterized in that it comprises, as the binder (A), at least one polyacrylate and/or polymethacrylate obtainable using one or more ethylenically unsaturated monomers (a1) of the formula (l) where R = hydrogen or a methyl radical, R' = hydrogen, alkyl or cycloalkyl, R" = alkyl, cycloalkyl, aryl or aralkyl, where the carbon chain may be interrupted by nonadjacent oxygen, sulfur or NRa groups, where Ra = alkyl, cycloalkyl, aryl or aralkyl, x = 0 to 2, and, as a crosslinking catalyst, at least one phosphorus- and nitrogen-containing catalyst (B). The present invention also provides a process for producing a multilayer paint system using this coating composition, more particularly for producing a refinishing system, and also the use of this process for coating automobile interior or exterior components or components for shipbuilding and aircraft construction, or components for domestic and electrical appliances, or polymer moldings or films.
摘要:
Described are coating material compositions comprising an isocyanate group-containing component, a hydroxyl group-containing component, and a zinc (1-methylimidazole)bis(2-ethylhexanoate) complex. Also described is the use of a zinc (1-methylimidazole)bis(2-ethylhexanoate) complex as a catalyst system for the urethane reaction in coating material compositions.