Abstract:
Es wird ein Verfahren zur Herstellung einer Isolatorschicht angegeben. Dieses umfasst folgende Verfahrensschritte: A) Bereitstellen eines Precursors, der eine Mischung einer ersten, einer zweiten und einer dritten Komponente umfasst, wobei - die erste Komponente eine Verbindung der allgemeinen Formel IA umfasst, wobei R 1 und R 2 unabhängig voneinander aus einer Gruppe auswählt sind, die Wasserstoff und Alkylreste umfasst und n = 1 bis 10000; die zweite Komponente eine Verbindung der allgemeinen Formel IIA umfasst, wobei R 3 für einen Alkylrest steht, und die dritte Komponente zumindest eine Aminverbindung umfasst B) Aufbringen des Precursors auf ein Substrat; C) Aushärten des Precursors zur Bildung der Isolatorschicht.
Abstract:
The invention relates to hardeners for epoxy resins, containing at least one adduct consisting of trimethylhexamethylendiamine and cresyl glycidyl ether. Said hardener has a low viscosity and hardens quickly together epoxy resins even in moist, cold conditions and without blushing to form films with a high hardness and surface quality, which turns a little yellow under the influence of light. It is particularly suitable for low-emission, room-temperature hardening coatings.
Abstract:
An epoxy composition that includes an epoxy-terminated prepolymer, an alkanolamine hardener having at least one hydroxyl group and an organometallic compound, where amine groups of the alkanolamine hardener react with epoxy groups of the epoxy-terminated prepolymer in a stoichiometric ratio to form a cured epoxy composition. The epoxy-terminated prepolymer is formed from a reaction product of an amine terminated polymeric polyol and a molar excess of epoxy groups in an epoxy monomer, relative to a molar amount of amine groups in the amine terminated polymeric polyol.
Abstract:
An adduct including a reaction product of (a) at least a first cycloaliphatic amine compound; (b) at least a second cycloaliphatic amine compound; and (c) at least one cycloaliphatic epoxy resin compound; a curable epoxy resin coating composition including (i) the above adduct; and (ii) at least one thermosetting epoxy resin compound; said curable composition being curable at ambient temperature; and a cured weatherable coating prepared from the above curable composition.
Abstract:
A curable composition comprising a blend of: a) an epoxy resin; and b) a hardener comprising a polyfunctional amine is disclosed. The curable composition can be used in a variety of applications including, but not limited to coatings, civil engineering, flooring, composites, adhesives, and electrical laminates.
Abstract:
The invention includes compositions comprising curable imidazolium- functionalized poly(room-temperature ionic liquid) copolymers and homopolymers. The invention further includes methods of preparing and using the compositions of the invention. The invention further includes novel methods of preparing thin, supported, room-temperature ionic liquid-containing polymeric films on a porous support. In one embodiment, the methods of the invention avoid the use of a gutter layer, which greatly reduces the overall gas permeance and selectivity of the composite membrane. In another embodiment, the films of the invention have increased gas selectivity and permeance over films prepared using methods described in the prior art.
Abstract:
A salicylic acid salt-containing liquid composition useful as an accelerator for a hardener includes a reaction product of (a) salicylic acid; and (b) at least one amine compound compatible with said salicylic acid such that the composition is in liquid form, the composition has a concentration of salicylic acid at from about 35 weight percent to about 55 weight percent, and the composition has a viscosity in the range of from about 500 mPas to about 20,000 mPa-s at 25 °C; a curable epoxy resin composition containing the salicylic acid salt-containing liquid composition accelerator; and a cured product made from the curable composition.
Abstract:
Ein Reparaturwerkstoff, insbesondere zur Reparatur einer Isolierung eines Leiterstabs einer elektrischen Maschine wird angegeben, welcher ein zunächst fließfähiges, kalthärtendes Matrixmaterial enthält. Erfindungsgemäß enthält der Reparaturwerkstoff zudem mindestens einen nanopartikulär vorliegenden Füllstoff, dessen Partikel einen mittleren Partikeldurchmesser von etwa 5 nm bis 200 nm, vorzugsweise etwa zwischen 15 nm und 75 nm aufweisen. Dieser Reparaturwerkstoff ist besonders teilentladungsfest.
Abstract:
Die Erfindung betrifft eine härtbare Zusammensetzung umfassend ein oder mehrere Epoxidverbindungen, ein oder mehrere Aminohärter und einen Zusatz eines oder mehrerer dendritischer Polymere, ausgewählt aus der Gruppe bestehend aus den dendritischen Polyester-Polymeren, wobei die dendritischen Polyester-Polymere durch eine Ax + By Synthese-Route sich herstellen lassen.
Abstract:
Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct.