摘要:
The present invention relates to coating compositions for flat assemblies, hybrids, SMD assemblies, comprising at least one binder or binder mixtures which are curable at 60° C.-120° C., preferably at 70° C.-110° C., more particularly at 80° C.-90° C., and also to a process for preparing them and to their use for flat assemblies in electronics, hybrids, SMD assemblies and assembled printed circuit boards.
摘要:
The invention relates to an overcoat lacquer containing a) at least one binding agent containing alkyd resins made from tris-(2-hydroxylethyl)-isocyanurate, 2,6-naphthaline dicarboxylic acid, drying fatty acids, and, optionally, other components known from alkyd resin chemistry, b) at least one solvent or at least one technical solvent or mixture thereof based on hydrocarbon and c) at least one siccative or at least one mixture of siccatives or several anti-skin agents.
摘要:
The invention relates to novel liquid epoxy resin emulsions which contain the following components, dissolved and/or dispersed in water: (A) at least one binding agent selected from the group made of epoxy resins and modified epoxy resins, (B) at least one non ionic thickener and (C) at least one catalyst for hardening, produced by reacting at least one boron trifluoride complex with at least one compound containing at least one epoxy group. The invention also relates to a method for the production and use thereof as an impregnating varnish for electrotechnical components, particularly for electrical winding items.
摘要:
The invention relates to an overcoat lacquer containing a) at least one binding agent containing alkyd resins made from tris-(2-hydroxylethyl)-isocyanurate, 2,6-naphthaline dicarboxylic acid, drying fatty acids, and, optionally, other components known from alkyd resin chemistry, b) at least one solvent or at least one technical solvent or mixture thereof based on hydrocarbon and c) at least one siccative or at least one mixture of siccatives or several anti-skin agents.
摘要:
The invention relates to mixtures of preferably from 80 to 99.9% by weight, based on the mixture, of a solution S1 comprising one or more polyamidocarboxylic acids and preferably from 0.1 to 20% by weight, based on the mixture, of a solution S2 comprising one or more, preferably primary, diamines and one or more tetracarboxylic acid diesters, processes for producing polyimide coatings using such mixtures, the use of such mixtures for producing polyimide coatings, and also polyamide-coated articles obtainable using such mixtures.
摘要:
A coating for enamelled wire having a base coat and a top coat, and enamelled wire having such coating. The top coat contains a binder, titanium dioxide and pyrogenic silica.
摘要:
Solvent composition comprising ethanol, aromatic hydrocarbon or hydrocarbon mixture, high-boiling solvent, wire enamel formulation based on polyvinyl formal and comprising the solvent composition, preparation process and use.
摘要:
Solvent composition comprising ethanol, aromatic hydrocarbon or hydrocarbon mixture, high-boiling solvent, wire enamel formulation based on polyvinyl formal and comprising the solvent composition, preparation process and use.
摘要:
An allyl amine compound such as an allyl dialkyl amine is prepared by the reaction of ammonia or a water soluble amine with an allyl halide in the presence of an alkali metal or alkaline earth metal hydroxide or carbonate using a two-phase reaction system comprising water and a water-immiscible organic liquid. The allyl amine product is of an exceptionally high purity and contains relatively small amounts of salts. When the reaction method is employed to prepare an allyl dialkyl amine, the allyl dialkyl amine can effectively be quaternized to prepare a pure diallyl dialkyl ammonium compound at high yields.
摘要:
A process is proposed for preparing hydroxyaromatics by heterogeneous catalytic reaction of hydroxyaromatics with C1-C4-alkanols in a microreactor (10), comprising the steps of: a) introducing the hydroxyaromatic and at least one compound selected from the group consisting of C1-C4-alkanols as reactants into at least one inlet orifice (22) of the microreactor (10) comprising at least one microreactor unit (18), b) passing the reactants through at least one microreactor unit (18) of the microreactor (10), said unit comprising a multitude of microchannels (28), said microchannels (28) having a lateral extent of less than 1 mm, and a heterogeneous catalyst being incorporated in the microchannels (28) for conversion of the reactants, c) passing the hydroxyaromatics prepared out through at least one outlet orifice (24) of the microreactor (10).