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'))的结构单元 3-x)n(X'-SiR''y(OR')3-y)m,以及两种或多种上述化合物(H)的组合,其通过使含异氰酸酯基的化合物(HG)与 原料存在于(HG)中的多于90摩尔%的异氰酸酯基的化合物(H)中的氨基化合物已经发生反应,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 (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 (D) for the crosslinking of silane groups, where (i) one or more constituents of the coating composition contain hydrolyzable silane groups and (iii) the coating composition can be finally cured to a coating which has statistically distributed regions of an Si—O—Si network. The finally cured coating obtained from the coating composition has a post-crosslinking index (PCI) of less than 2, wherein (PCI) is defined as the ratio of the storage modulus E′(200) at 200° C. to the minimum of the storage modulus E′(min) at a temperature above the measured glass transition temperature Tg.
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 invention relates to the use of partly silanized compounds based on polyisocyanate as crosslinking agents with heightened refractive index in curable coating compositions, more particularly in clearcoat materials for automotive finishing. The invention likewise relates to a coating composition which comprises these compounds as crosslinking agents, and to the use of the coating composition to produce a coating.
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:
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:
The invention relates to the use of partly silanized compounds based on polyisocyanate as crosslinking agents with heightened refractive index in curable coating compositions, more particularly in clearcoat materials for automotive finishing. The invention likewise relates to a coating composition which comprises these compounds as crosslinking agents, and to the use of the coating composition to produce a coating.
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).