Entity

Time filter

Source Type

Germany

The invention relates to a process for coating metallic surfaces with a composition containing silane/silanol/siloxane/polysiloxane, the composition consisting essentially of The invention further relates to corresponding aqueous compositions.


A process for producing a repair coating on at least one metallic surface that is coated with at least one corrosion protecting coating A applied with at least one composition selected from the group of pretreatment compositions, of organic compositions and of silicon compound(s) containing compositions, whereby the at least one corrosion protecting coating A has been at least partially removed in the area Z, whereby a thin corrosion protecting coating B containing at least one silicon compound is applied with a solution or dispersion containing at least one silane, at least one silanol, at least one siloxane, at least one polysiloxane or any mixture of these (=siloxane composition) on at least a part of the area Z. Optionally, a further corrosion protecting coating C may be applied on the thin corrosion protecting coating B generated with the siloxane composition whereby the at least one further corrosion protecting coating C is generated with at least one organic composition like a primer, a wet-primer, an e-coat, a powder coat, a base-coat or a clear-coat or with at least one composition which is the same or another siloxane composition as for the thin film B.


A method for coating a metallic surface with an aqueous composition for pretreating before applying another coating or for treating said metallic surface. In addition to water, the composition contains: a) at least one hydrolyzable or at least partially hydrolyzed silane; b) at least one metal chelate; c) at least one organic film former, and; d) at least one long-chain alcohol that serves as a film forming aid. The unsoiled, scoured, cleaned and/or pretreated metallic surface is brought into contact with the aqueous composition so that a film forms on the metallic surface, which is subsequently dried, compacted in part or completely by film formation and, if necessary, additionally hardened. The dried and, if necessary, additionally hardened film has a layer thickness ranging from 0.01 to 10 m. The invention also relates to corresponding aqueous compositions.


A method of using a silane additive in an aqueous cleaning composition, in an aqueous rinsing liquid and/or in an aqueous activation composition for preventing pinholes on zinc-containing metallic surfaces, wherein the silane content in at least one of these aqueous compositions is in a range of 0.001 to 5 g/l.


Grant
Agency: Cordis | Branch: FP7 | Program: CP-FP | Phase: GC.NMP.2012-1 | Award Amount: 3.74M | Year: 2012

This project is aimed to the identification and development of nanostructured electrode and electrolyte materials to promote the practical implementation of the very high energy lithium-sulfur battery. In particular, the project will be directed to the definition and test of a new, lithium metal-free battery configuration based on the use of lithiated silicon as the anode and a nanostructured sulfur-carbon composite as the cathode. It is expected that this battery will offer an energy density at least three times higher than that available from the present lithium battery technology, a comparatively long cycle life, a much lower cost (replacement of cobalt-based with a sulfur-based cathode) and a high safety degree (no use of lithium metal). All the necessary steps for reaching this goal are considered, starting from material synthesis and characterization, exploiting nanotechnology for improving rate capability and fast charging, the fabrication and test of large scale prototypes and to the completion of the cycle by setting the conditions for the recycling process. A team of experts have been selected as partners of the project, including a number of academic laboratories, all with worldwide recognized experience in the lithium battery field, whose task will be that of defining the most appropriate electrode and electrolyte nanostructures. The project will benefit by the support of a laboratory expert in battery modeling to provide the theoretical guidelines for materials optimization. Large research laboratories, having advanced and modern battery producing machineries will be involved in the preparation and test of middle size battery prototypes. Finally, chemical and battery manufacturing industries will assure the necessary materials scaling-up and the fabrication and test of large batteries and particular attention will be devoted to the control of the safety and to definition and practical demonstration of its most appropriate recycling process.

Discover hidden collaborations