Epg Engineered Nanoproducts Germany Ag

Christian Schmidt

Helmut Schmidt

Klaus Endres

Heike Schneider

Carsten Schmidt

Barbara Kutzky

Luis Genolet

The invention relates to the use of a coating of a layer including an inorganic, glass-like matrix of an alkali silicate and/or alkaline earth silicate or a layer including an inorganic-organic hybrid matrix or of a double layer of a base layer including an inorganic, glass-like matrix of an alkali silicate and/or alkaline earth silicate or a base layer including an inorganic-organic hybrid matrix and an alkali silicate-free and alkaline earth silicate-free top layer including a matrix of an oxidated silicon compound as the anti-limescale coating on at least one metal surface or inorganic surface of an object or material. The anti-limescale coating can be used for storage or transport devices for water or media containing water. The anti-limescale coating is suitable for pipelines, sand control systems or safety valves in the conveyance of oil or gas or the storage of oil or gas.

Highly abrasion-resistant anti-limescale layers with high chemical resistance

The invention relates to a method of stabilizing the bonding agent gelation time in the consolidation of a geological formation in the presence of one or more catalytically active substances, in which method a bonding agent is infiltrated into the formation, a portion of the infiltrated bonding agent is optionally expelled by flushing with a gas or a liquid, and the bonding agent remaining in the formation is cured. the bonding agent comprises a mixture of a) a heterocondensate, obtainable by hydrolysis and condensation of at least one hydrolyzable silicon compound and at least one metal, phosphorus or boron compound, the metal being selected from Al, Ge, Sn, Pb, Ti, Mg, Li, V, Nb, Ta, Zr and Hf, B) at least one organic polymerizable monomer or oligomer comprising a C-C double bond, and C) at least one thermal polymerization initiator without peroxide function.

Robust binder, which is independent from the influence of catalytically active substances, for use in the crude oil and natural gas industry

The invention relates to articles comprising a metal surface provided with a glass-, glass-ceramic- or ceramic-type protective layer, characterized in that the protective layer comprises a base layer comprising a matrix made of an alkali and/or alkaline earth silicate and an alkali metal- and alkaline earth metal-free top layer comprising a matrix made of an oxidic silicon compound, and to a method for the manufacture of said articles. The articles comprising the protective layer exhibit high chemical resistance and improved non-stick properties. They are characterized in particular by high dishwasher resistance.

Metal surfaces compromising a thin glass- or ceramic type protective layer having high chemical resistance and improved non-stick properties

A binder is described which comprises A) a hydrolysate or heterocondensate of at least one hydrolysable silicon compound and at least one metal, phosphorus or boron compound, the metal being selected from Al, Ge, Sn, Pb, Ti, Mg, Li, V, Nb, Ta, Zr and Hf, B) an organic polymerizable or polycondensable monomer or oligomer and C) a buffer, so that the pH of the buffered binder is in the range from 2 to 7, and optionally a complexing agent, if appropriate, the at least one hydrolysable silicon compound comprising one or more hydrolysable silicon compounds having at least one nonhydrolysable group or oligomers thereof. The binder is suitable for consolidating bulk or loose substrates.

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Saarbruecken, Germany

Christian Schmidt