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:
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:
For readjusting a polarization drift in the transmission of a polarization-encoded optical signal from a transmitter via a light guide to a receiver, optical auxiliary signals having the same wavelength as the polarization-encoded signal as well as different polarizations as in correspondence with a first base and a second base are fed into the light guide on the side of the transmitter while the transmission of the polarization-encoded signal is interrupted, and the optical auxiliary signals are picked up from the light guide and checked for shifts of the different polarizations by a polariometer on the side of the receiver, whereupon, in the event of the detection of polarization shifts, the different polarizations shifted during the transmission are displaced in the sense of the polarization set values via a polarization controller associated with the light guide.
摘要:
The invention relates to coating compositions comprising (a) at least one hydroxyl-containing compound (A), (b) at least one saturated compound (B) having free and/or blocked isocyanate groups and containing at least in part hydrolyzable silane groups, and (c) at least one catalyst (D) for the crosslinking of silane groups, wherein the coating composition comprises as hydroxyl-containing compound (A) at least one hyperbranched, dendritic hydroxy-functional polyester in which on average at least one hydroxyl function of the polyester is esterified with at least one acid selected from the group of the isomeric C8 to C9 monocarboxylic acids. The present invention also provides a multistage coating method using these coating compositions, and also the use of the coating compositions as clearcoat material for producing multicoat effect and/or color paint systems, and use of the coating method for automotive OEM finishing and automotive refinish.
摘要:
The invention discloses deagglomerated barium sulphate which has an average primary particle size of less than 0.5 μm and is coated with a dispersant. The dispersant has preferably reactive groups which are able to interact with the surface of the barium sulphate; particularly preferred dispersants are those which are able to endow the barium sulphate with a hydrophilic surface and have reactive groups for coupling to or into polymers. Also disclosed is a plastics premix comprising the deagglomerated, coated barium sulphate.
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 connection element, in particular a plate nut, comprising a base body for attachment of an arbitrary component to a metallic planar object, in particular to a sheet metal.According to the invention, the base body comprises a securement portion the cross-sectional geometry of which deviates from a circular shape, the securement portion being at least partially positively receivable in a deformation in the sheet metal. The base body is, by means of a holding device, secured in the deformation against dropping out.In an alternative embodiment of the connection element, wherein unilateral accessibility to the sheet metal is sufficient, the holding device is formed by bead portions in a shaft area of the base body, which are plastically deformed into a bead by pull-out of a threaded bolt that is screwed into a thread portion.In accordance with a further embodiment the holding device is formed by a threaded nut engageable on the underside with the base body of the connection element or/and snappable onto the same, bilateral accessibility to the sheet metal however being required.
摘要:
Silanes of the formula: [(ZmRnSi—R1o—)pR2q—Y—C(X)—Y—]rG[—Y—(X)C—Y—R3]s (I), in which m+n=3; m=1,2 or 3; n=0, 1 or 2; o=0 or 1, and q=if o=0; p=1, 2, 3 or 4; q=0 or 1, and p=1 if q=0; r, s=1, 2 or 3; and Z is a hydrolyzable atom or group; R is a nonhydrolyzable group without an epoxide group; R1 is a divalent group; R2 is a (p+1)-valent group; R3 is a nonhydrolyzable, epoxy-containing group; X is an oxygen atom and/or sulfur atom; G is an (r+s)-valent cyclic group; Y is an oxygen atom, sulfur atom or imino group >NR4 where R4=hydrogen atom, group R, group (ZmRnSi—R1o—)pR2q—, group R3—, group (ZmRnSi—R1o—)pR2q—NH—C(X)— or group R3—NH—C(X)—; processes for their preparation, and their use.
摘要翻译:具有下式的硅烷:<?in-line-formula description =“In-line formula”end =“lead”?> [(Z> m sub> - - - - (X)-Y(X)-Y(X)-Y - ] i> G [-Y-(X)CYR 3](I),<?在线公式描述=“ 在线公式“end =”tail“?>其中m + n = 3; m = 1,2或3; n = 0,1或2; o = 0或1,q =如果o = 0; p = 1,2,3或4。 q = 0或1,如果q = 0,则p = 1; r,s = 1,2或3; Z是可水解的原子或基团; R是不含环氧基团的不可水解基团; R 1是二价基团; R 2是(p + 1)价基团; R 3是一种不可水解的含环氧基团; X是氧原子和/或硫原子; G是(r + s)价的环状基团; Y是氧原子,硫原子或亚氨基> NR 4,其中R 4 =氢原子,基团R,基团(Z m R 其中R 1,R 2,R 2,R 3,R 3,R 3,R 3, 基团R 3, - 基团(Z m),R n,Si-R 1, - - - - - - - - - - - - - - - - - - - - - (2) -NH-C(X) - ; 其准备过程及其使用。
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:
Binder mixture comprising a hydroxyl-containing compound (A), and at least 1.0% by weight, based on the nonvolatile constituents of the binder mixture, of a phosphorus- and nitrogen-containing catalyst (D) for the crosslinking of silane groups, wherein the hydroxyl-containing compound (A) comprises a hydroxyl-functional polyester having on average at least one hydroxyl function of the polyester esterified with a C8 to C9 monocarboxylic acid, and the catalyst (D) is blocked with at least one tertiary amine of the formula (I) where R1 is an acyclic aliphatic or araliphatic hydrocarbon radical having at least 3 C atoms, R2 is an acyclic aliphatic or araliphatic hydrocarbon radical which is the same or different from R1 and/or R3, and R3 is hydrogen or an acyclic aliphatic or araliphatic hydrocarbon radical which is the same or different from R1 and/or R2.