摘要:
The present invention relates to a coating composition comprising (d) at least one binder (A) having reactive groups, (e) at least one crosslinking agent (B) which is able to react, with crosslinking with the reactive groups of the binder (A), and at least one catalyst (C) for the crosslinking of silane groups, one or more constituents (A) and/or (B) and/or at least one further constituent of the coating composition containing hydrolyzable silane groups, wherein the catalyst (C) is a phosphoric acid compound, more particularly phosphoric acid or phosphonic acid, which is blocked with an amine having a pKb≧3 and a boiling point >100° C.
摘要:
Disclosed are coating compositions comprising (a) at least one hydroxyl-containing compound (A), (b) at least one compound (B) having isocyanate groups, and (c) at least one catalyst (D) for the crosslinking of silane groups, said catalyst (D) comprising phosphorus. It is an aspect of the disclosed coating compositions that (i) one or more constituents of the coating composition contain hydrolyzable silane groups and (ii) the coating composition can be finally cured to a coating which has statistically distributed regions of an Si—O—Si network.
摘要:
Coating compositions comprising at least one hydroxyl-containing compound (A), at least one isocyanato-containing compound (B) and at least one urea-group-containing compound (H) different from (B), compound (H) comprising at least one structural unit selected from the group consisting of a structural unit (I) a structural unit (II) a structural unit (III) —NR′″—C(O)—N(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m, and combinations of two or more of the foregoing, compound (H) being obtained by reacting an isocyanato-containing compound (HG) with amino-containing compounds, wherein in compound (H) more than 90 mol % of the isocyanate groups originally present in (HG) have undergone reaction to form the structural units (I), (II), (III), or combinations thereof, where R′, R′″=hydrogen, alkyl, cycloalkyl, aryl or aralkyl; R, R″=alkyl, cycloalkyl, aryl or aralkyl; X, X′=linear and/or branched alkyl or cycloalkyl radical; x, y, n, m=0 to 2; and m+n=2.
摘要翻译:包含至少一种含羟基的化合物(A),至少一种含异氰酸酯基的化合物(B)和至少一种不同于(B)的含脲基化合物(H),化合物(H) 选自结构单元(I),结构单元(II),结构单元(III)-NR'-C(O)-N(X-SiR“x(OR')3 - )的结构单元 x)n(X'-SiR“y(OR')3-y)m和上述两种或更多种的组合,化合物(H)是通过含异氰酸酯基的化合物(HG)与含氨基的化合物 化合物,其中在(HG)中原子存在的大于90摩尔%的异氰酸酯基团的化合物(H)中已经发生反应以形成结构单元(I),(II),(III)或其组合,其中R' R'“=氢,烷基,环烷基,芳基或芳烷基; R,R“=烷基,环烷基,芳基或芳烷基; X,X'=直链和/或支链烷基或环烷基; x,y,n,m = 0〜2; m + n = 2。
摘要:
Disclosed are coating compositions comprising at least one hydroxyl-containing compound (A) and at least one isocyanato-containing compound (B), wherein one or more of the constituents of the coating composition comprise between 2.5 and 97.5 mol %, based on the entirety of structural units (I) and (II), of at least one structural unit of the formula (I) —N(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m (I) and between 2.5 and 97.5 mol %, based on the entirety of structural units (I) and (II), of at least one structural unit of the formula (II) —Z—(X—SiR″x(OR′)3-x) (II).
摘要:
The present invention relates to coating compositions comprising (A) at least one hydroxyl-containing polyacrylate and/or at least one hydroxyl-containing polymethacrylate and (B) at least one compound containing isocyanate groups and having at least one structural unit (I) of the formula (I) —NR—(X—SiR″x(OR′)3-x) (I), and having at least one structural unit (II) of the formula (II) —N(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m (II), where (i) (A) has a glass transition temperature of less than 10° C., (ii) (B) contains more than 10 to more than 90 mol %, of at least one structural unit of the formula (I) and 10 to less than 90 mol % of at least one structural (II), based on the entirety of the structural units (I) and (II), and (iii) 10 to 60 mol % of the isocyanate groups of the diisocyanate and/or polyisocyanate parent structure of (I) and (II). The invention provides multistage coating processes using these coating compositions.
摘要:
The present invention relates to a coating composition comprising (a) at least one hydroxyl-containing compound (A), (b) at least one compound (B) having free and/or blocked isocyanate groups, and (c) at least one catalyst (C) for the crosslinking of silane groups, one or more constituents of the coating composition containing hydrolyzable silane groups, wherein the coating composition contains a water scavenger as further constituent (D).
摘要:
Disclosed are aqueous coating compositions comprising at least one hydroxyl-containing compound (A), at least one compound (B) having isocyanate groups and also having hydrolyzable silane groups, and at least one catalyst (C)wherein the compound (B) has 10 mol % to less than 90 mol % of at least one structural unit (I) —N(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m (I) Where R′=hydrogen, alkyl or cycloalkyl, X, X′=linear and/or branched alkylene or cycloalkylene radical having 1 to 20 carbon atoms, R″=alkyl, cycloalkyl, aryl or aralkyl, n=0 to 2, m=0 to 2, m+n=2, and x, y=0 to 2, and more than 10 to 90 mol % of at least one structural unit (II) —Z—(X—SiR″x(OR′)3-x) (II), where Z=—NH—, —NR—, —O— or —S—, where R=alkyl, cycloalkyl, aryl or aralkyl, and x, X, R′ and R″ have the definition indicated for formula (I).
摘要:
Disclosed are coating compositions comprising (a) at least one hydroxyl-containing compound (A), (b) at least one compound (B) having isocyanate groups, and (c) at least one catalyst (D) for the crosslinking of silane groups, said catalyst (D) comprising phosphorus. It is an aspect of the disclosed coating compositions that (i) one or more constituents of the coating composition contain hydrolyzable silane groups and (ii) the coating composition can be finally cured to a coating which has statistically distributed regions of an Si—O—Si network.
摘要:
The present invention relates to a process for the coating of polycarbonate substrates, in particular of transparent polycarbonate substrates, by applying a transparent coating composition encompassing at least one radiation-curing binder resin (A) and/or reactive diluent (C), nanoparticles (B), optionally solvent and at least one light stabilizer (L), to a polycarbonate substrate, wherein the coating composition comprises at least one light stabilizer (L) which comprises, per molecule, an average of at least one ethylenically unsaturated group bonded by way of a urethane group.The present invention also relates to the coating compositions used in said process, and to the coated polycarbonate substrates obtainable via is the process, and to their use.
摘要:
The present invention relates to coating compositions comprising (A) at least one hydroxyl-containing polyacrylate and/or at least one hydroxyl-containing polymethacrylate and (B) at least one compound (B) containing isocyanate groups and having at least one structural unit (I) of the formula (I) —NR—(X—SiR″x(OR′)3-x) (I), and having at least one structural unit (II) of the formula (II) —N(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m (II), where (i) the hydroxyl-containing polyacrylate and/or the hydroxyl-containing polymethacrylate have/has a glass transition temperature of less than 10° C., (ii) the compound (B) containing isocyanate groups contains more than 10 mol % to 90 mol % of at least one structural unit of the formula (I) and 10 to less than 90 mol % of at least one structural unit of the formula (II), based in each case on the entirety of the structural units (I) and (II), and (iii) 10 to 60 mol % of the isocyanate groups of the diisocyanate and/or polyisocyanate parent structure of the compound (B) have been reacted to form the structural units of the formulae (I) and (II). The present invention additionally provides multistage coating processes using these coating compositions, and also the use of the coating compositions as clearcoat or application of the coating process for automotive OEM finishing, the finishing of surface-mounted automotive components, and automotive refinish.