Akzo Nobel Chemicals International B.v.

Other

Bayer Aktiengesellschaft

Bayer Materialscience Ag

H.c. Starck Gmbh

Covestro Deutschland Ag

Vetrotech Saint-Gobain Ag

Dietrich Pantke

Rüdiger Musch

Peter-Nikolaus Schmitz

Hartmut Melzer

Lothar Puppe

Hans-Dieter Block

Hans-Heinrich Moretto

Stephan Kirchmeyer

Udo Gelderie

Knut Panskus

Christoph Holzner

Wolfgang Ohlendorf

Norbert Schwankhaus

Knud Panskus

Alfred Wagner

Ruediger Musch

The invention relates to aqueous dispersions, characterized in that they comprise (c) at least one aqueous silicon dioxide dispersion with a mean particle diameter of the SiO-particles of 1 to 400 nm and (d) at least one water-soluble hydroxyl-containing organic compound, to a process for their preparation and to their use in adhesive and coating formulations.

Aqueous silicon dioxide dispersions for sealant and adhesive formulations

A light-permeable heat-protection element including at least one support element and at least one protective coating containing a reaction product which includes an aqueous alkali silicate solution and aluminate-modified or borate-modified silicon dioxide.

Light-permeable heat protection element with aluminate-modified or borate-modified silicon dioxide

A process of preparing a silica sol is described. The process involves reacting a fresh sol with guanidine carbonate. The reaction may be conducted in the presence of a base (e. g. , sodium water glass), and at a pH of from 8 to 12. The process of the present invention may also include concentrating steps. The silica sol prepared by the method of the present invention has a BET surface area of greater than or equal to 100 m/g, and contains from 0.05 to 15% by weight of gaunidinium ions, based on the total weight of the silica gel.

Silica gel comprising guanidine carbonate

Aqueous polymeric dispersions comprising a mixture of: (a) a component selected from the group consisting of polyvinylacetates, polyvinylacetate copolymers, and combinations thereof; and (b) SiOparticles having an average particle diameter of 1 to 400 nm; their use as adhesives and coatings; processes for preparing such dispersions; and substrates coated and/or adhered therewith.

Aqueous dispersions of polyvinylacetate and silica, processes for preparing the same, uses therefor and substrates coated and/or bonded therewith

Aqueous polymer dispersions based on polychloroprene, and a process for their preparation and use. The aqueous polymer dispersions are produced from a polychloroprene dispersion having an average particle size of from 60 to 220 nm, and an aqueous silicon dioxide dispersion having an SiOparticle diameter of from 1 to 400 nm.

Aqueous adhesive dispersions

The invention relates to a process for producing a molding, characterized in that a silicatic solid is mixed with a solution comprising a first silicatic binder and the mixture is then press-molded, and the compression molding is then post-treated with a solution comprising a second silicatic binder, and to silicatic moldings obtainable by this process, and also to their use as construction material, insulator material, gasket material or fire-resistant material.

Process for producing silicatic moldings

In the preparation of dimethylamine-borane by reacting an alkali metal or alkaline earth metal borohydride with a dimethylammonium salt, the improvement which comprises effecting the reaction in a liquid mixture comprising dimethylamine as a solvent and an additional organic solvent.

Method of preparing dimethylamine-borane

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Ratingen, Germany

Dietrich Pantke