摘要:
Autocatalyzed, thermally curable compositions free from external catalysts and comprising condensates of silanes which contain at least one of hydrolyzable atoms and hydrolyzable groups and processes for preparing them, and their use for producing thermally cured compositions.
摘要:
Surface-modified nanoparticles whose surface is covered completely or near-completely with(A) modifying groups which are attached covalently to the surface via linking functional groups (a) and contain inert spacer groups (b) and contain reactive functional groups (c) which are connected via the groups (b) to the groups (a) and are inert toward the reactive functional groups of the surface to be modified, (B) modifying groups which are attached covalently to the surface via linking functional groups (a) and contain inert groups (d) having a smaller hydrodynamic volume VH than the inert spacer groups (Ab), and (C) modifying groups which are attached to the surface via linking functional groups (a) which contain at least one silicon atom, contain inert groups (e), and have a smaller hydrodynamic volume VH than the modifying groups (A); dispersions comprising the nanoparticles, processes for preparing them, and their use.
摘要翻译:表面被完全或接近完全覆盖的表面改性纳米粒子(A)修饰基团,其通过连接官能团(a)共价连接到表面并含有惰性间隔基团(b)并含有反应性官能团(c),其中 通过基团(b)连接到基团(a)上,并且对于待改性表面的反应性官能团是惰性的,(B)通过连接官能团(a)共价连接到表面上并且含有 惰性基团(d)具有比惰性间隔基团(Ab)更小的流体动力学体积V H,和(C)通过连接官能团(a)连接到表面上的改性基团 至少一个硅原子含有惰性基团(e),并且具有比修饰基团(A)更小的流体动力学体积V H H。 包含纳米颗粒的分散体,制备它们的方法及其用途。
摘要:
Surface-modified nanoparticles whose surface is covered completely or near-completely with (A) modifying groups which are attached covalently to the surface via linking functional groups (a) and contain inert spacer groups (b) and contain reactive functional groups (c) which are connected via the groups (b) to the groups (a) and are inert toward the reactive functional groups of the surface to be modified, (B) modifying groups which are attached covalently to the surface via linking functional groups (a) and contain inert groups (d) having a smaller hydrodynamic volume VH than the inert spacer groups (Ab), and (C) modifying groups which are attached to the surface via linking functional groups (a) which contain at least one silicon atom, contain inert groups (e), and have a smaller hydrodynamic volume VH than the modifying groups (A); dispersions comprising the nanoparticles, processes for preparing them, and their use.
摘要翻译:表面被完全或接近完全覆盖的表面改性纳米粒子(A)修饰基团,其通过连接官能团(a)共价连接到表面并含有惰性间隔基团(b)并含有反应性官能团(c),其中 通过基团(b)连接到基团(a)上,并且对于待改性表面的反应性官能团是惰性的,(B)通过连接官能团(a)共价连接到表面上并且含有 惰性基团(d)具有比惰性间隔基团(Ab)更小的流体动力学体积V H,和(C)通过连接官能团(a)连接到表面上的改性基团 至少一个硅原子含有惰性基团(e),并且具有比修饰基团(A)更小的流体动力学体积V H H。 包含纳米颗粒的分散体,制备它们的方法及其用途。
摘要:
An aqueous dispersion with a pH of from 2 to 7, comprising (A) at least one swellable polymer or oligomer containing anionic and/or potentially anionic functional groups, (B) surface-modified, cationically stabilized, inorganic nanoparticles of at least one kind, and (C) at least one amphiphile; and its use for producing highly scratch-resistant coatings, moldings, and self-supporting films.
摘要:
The invention relates to a short-pulse laser device (11) with a preferably passive mode coupling. Said device comprises a resonator (12) which contains a laser crystal (14) in addition to several mirrors (M1-M7, OC) that define a long resonator arm (17) and a short resonator arm (16), one (M1) of said mirrors forming a pump beam coupling-in mirror and another (OC) forming a laser beam output coupler and comprising a multiple reflection telescope (18) that increases the length of the resonator and is allocated to the resonator arms (16, 17). Said telescope is constructed using mirrors (25, 26), in order to reflect a laser beam (15) that is coupled into the space between them back and forth several times, prior to being decoupled back into the other resonator, whereby sequential eccentric reflection points (1 to 8; 1′ to 8′) on the mirrors (25,26) are offset in relation to one another. The telescope (18) comprises only one curved mirror (26), in addition to a planar mirror (25), whose position corresponds at least substantially to the centre (25′) of an imaginary multiple reflection assembly comprising two curved mirrors (26a, 26b), whereby the one curved mirror (26) of the telescope (18) also contains the reflection points of the other imaginary curved mirror. The invention also relates to a multiple reflection telescope (18) for said device.
摘要:
Disclosed is a hyperbranched, dendritic, hydroxyl-functional polyester comprising an OH number greater than or equal to 180 mg KOH/g as measured via DIN 53240 and to clearcoat compositions comprising said polyesters. Also disclosed are processes for preparing the disclosed polyester, methods of making coated automotive substrates by applying the disclosed clearcoat compositions to automotive substrates, and to coated substrates made therefrom.
摘要:
[Problem] To provide a paint composition which forms paint films which are excellent in terms of car-wash scratching resistance, acid resistance and weather resistance, a method of finish painting and painted objects.[Means of Resolution] A paint composition which has as essential components hydroxyl group containing resin (A) which has a hydroxyl group value of from 80 to 220 mgKOH/g, a glass transition temperature of −50° C. or above but below 0° C. and which contains from 25 to 55 mass % of units of 4-hydroxybutyl (meth)acrylate origin, hydroxyl group containing resin (B) which has a hydroxyl group value of from 80 to 220 mgKOH/g and a glass transition temperature of from 0 to 50° C. and crosslinking agent (C) comprising polyisocyanate compound, characterized in that the proportions of hydroxyl group containing resin (A) and hydroxyl group containing resin (B) included are, as a ratio of the solid fraction masses, from 95/5 to 50/50, and the proportion of isocyanate groups which are the functional groups of the crosslinking agent (C) included with respect to the hydroxyl groups in total of the hydroxyl group containing resin (A) and the hydroxyl group containing resin (B), as the NCO/OH mol ratio, is from 0.5 to 1.5.
摘要:
An aqueous dispersion with a pH of from 2 to 7, comprising (A) at least one swellable polymer or oligomer containing anionic and/or potentially anionic functional groups, (B) surface-modified, cationically stabilized, inorganic nanoparticles of at least one kind, (C) at least one compound selected from the group consisting of amphiphiles and organic compounds which are capable of forming chelate ligands, and (D) at least one crosslinking agent; method for its production and its use for producing highly scratch-resistant coatings, moldings, and self-supporting films.
摘要:
The invention relates to two-component coating systems comprising as component (a) one or more polyisocyanates, as component (b) one or more oligomeric and/or polymeric compounds that are reactive with component (a), and as component (c) one or more phosphonates selected from the group of phosphonic diesters and diphosphonic diesters, where (i) component (b) comprises all oligomeric and/or polymeric compounds that are present in the two-component coating system and are reactive with component (a) and (ii) component (b) contains not more than 15% by weight, based on the total weight of component (b), of oligomeric and/or polymeric compounds which carry isocyanate-reactive amino groups. Additionally provided by the invention are a process for preparing the two-component coating systems, and the use of these coating systems as a clearcoat, more particularly for multicoat automobile finishing.
摘要:
Pseudoplastic aqueous dispersions comprising particles which are solid and/or of high viscosity, are dimensionally stable under storage and application conditions, are in dispersion in a continuous aqueous phase and said particles comprise surface-modified nanoparticles whose surface is covered fully or almost fully by modifying groups, processes for preparing them, and their use