摘要:
A thermosetting coating material comprising (A) at least 50% by weight, based on the amount of nonvolatile substances in the coating material of (A1) from 0% to 50% by weight, based on the entirety of components (A1) and (A2), of a polymethacrylate copolymer containing more than 50% by weight, based on the entirety of comonomers in the copolymer (A1), of free-radically polymerizable, ethylenically unsaturated compounds (a1) containing at least one reactive group of the formula I —X—SiR″x(OR″)3-x (I) and (A2) from 50% to 100% by weight, based on the entirety of components (A1) and (A2), of an adduct of polyisocyanate and alkoxysilane, (A2) containing at least one reactive group of the formula II: —NR—C(O)—N—(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m (II) (B) a catalyst for the crosslinking of the —Si(OR′)3-x units, and (C) an aprotic solvent or a mixture of aprotic solvents.
摘要翻译:一种热固性涂料,其包含(A)至少50重量%,基于组合物(A1)和(A1)的总成分(A1)中(A1)的涂料中的非挥发性物质的量为0重量%至50重量% A2),含有基于共聚物(A1)中共聚单体总共的50重量%以上的含有至少一个式I的反应性基团的可自由基聚合的烯属不饱和化合物(a1)的聚甲基丙烯酸酯共聚物 <?in-line-formula description =“In-line Formulas”end =“lead”?> X-SiR“x”(OR“)3-x SUB (A1)和(A1)和(A1)的全部组成成分(A1)和(A2)以重量百分比计,从50%到100% A2),包含至少一个式II的反应性基团的(A2)的聚异氰酸酯和烷氧基硅烷的加合物:<?in-line-formula description =“In-line formula”end =“lead”→> C(O)-N-(X-SiR“x”(OR')3-x N)(X'-SiR' ' y SUB (OR')3-y sub> m(II)<?in-line-formula description =“In-line Formulas”end =“tail”?>( B)用于交联-Si(OR')3-x sub>单元的催化剂,和(C)非质子溶剂或非质子传递溶剂的混合物。
摘要:
A thermosetting coating material comprising (A) at least 50% by weight, based on the amount of nonvolatile substances in the coating material of (A1) from 0% to 50% by weight, based on the entirety of components (A1) and (A2), of a polymethacrylate copolymer containing more than 50% by weight, based on the entirety of comonomers in the copolymer (A1), of free-radically polymerizable, ethylenically unsaturated compounds (a1) containing at least one reactive group of the formula I —X—SiR″x(OR′)3-x (I) and (A2) from 50% to 100% by weight, based on the entirety of components (A1) and (A2), of an adduct of polyisocyanate and alkoxysilane, (A2) containing at least one reactive group of the formula II: —NR—C(O)—N—(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m (II) (B) a catalyst for the crosslinking of the —Si(OR′)3-x units, and (C) an aprotic solvent or a mixture of aprotic solvents.
摘要:
The invention relates to a coating material comprising (A) at least 50% by weight, based on the amount of nonvolatile substances in the coating material, of at least one compound (A1) containing at least one reactive group of the formula(I) —NR—C(O)—N—(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m (I) where R=hydrogen, alkyl, cycloalkyl, aryl or aralkyl, the carbon chain being uninterrupted or interrupted by nonadjacent oxygen, sulfur or NRa groups, with Ra=alkyl, cycloalkyl, aryl or aralkyl, R′=hydrogen, alkyl or cycloalkyl, the carbon chain being uninterrupted or interrupted by nonadjacent oxygen, sulfur or NRa groups, X, X′=linear and/or branched alkylene or cycloalkylene radical of 2 to 20 carbon atoms, R″=alkyl, cycloalkyl, aryl or aralkyl, the carbon chain being uninterrupted or interrupted by nonadjacent oxygen, sulfur or NRa groups, n=0 to 2, m=0 to 2, m+n=2, and x, y=0 to 2, (B) a catalyst for the crosslinking of the —Si(OR′)3-X(y) units, and (C) an aprotic solvent or a mixture of aprotic solvents.
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 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 phosphate-containing catalyst (C) for the crosslinking of silane groups, (d) at least one further catalyst (D), one or more constituents of the coating composition containing hydrolyzable silane groups, wherein the catalyst (D) is a bicyclic amine.
摘要:
Disclosed are coating compositions comprising film-forming material with at least one reactive functional group G″′, catalyst for the crosslinking of the silane groups, aprotic solvents, and at least one adduct with silane functionality which is prepared by an addition reaction of (a) at least one silane (S1) which has at least one functional group G′ which is reactive with the complementary functional groups G″ of the compound (O), and (b) at least one compound (O) which has at least one complementary functional group G″ and at least one surface-active radical. Also disclosed are multicoat paint systems in which the transparent coating has been produced from these coating compositions, methods of making and use, as well as methods of improving the hardness and/or the scratch resistance of coatings.
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 hydroxyl-functional binders having an OH number greater than or equal to 180 mg KOH/g as determined in accordance with DIN 53240 and a solubility parameter SP=10, and to clearcoat compositions comprising said binders. Also disclosed are processes for preparing the disclosed hydroxyl-functional binders, methods of making coated automotive substrates by applying the disclosed clearcoat compositions to automotive substrates, and to coated substrates made therefrom.
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:
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.