Evonik Degussa Gmbh

Degussa Aktiengesellschaft

Evonik Operations Gmbh

Huels Aktiengesellschaft

Degussa-huels Aktiengesellschaft

Eckhard Just

Philipp Albert

Peter Jenkner

Burkhard Standke

Jaroslaw Monkiewicz

Michael Horn

Albert-Johannes Frings

Sabine Giessler-Blank

Sabine Giessler

Julia Kirberg

Helmut Mack

Roland Edelmann

Ralf Laven

Ekkehard Mueh

Christian Wassmer

Tilman Taeger

Manfred Kaussen

Thomas Kränzler

Helmut Lohmann

Christian Waβmer

Stephan Ramlow

Johannes Liebermann

Christian Waßmer

Dirk Laur

Jennifer Schrantz

Ekkehard Müh

Dennis Bringmann

Dominik Hitzler

The present invention relates to a composition comprising &#x2014;a specific binder containing at least one cocondensate based on at least one &#x3c9;-glycidyloxyalkylalkoxysilane and a bis(alkoxyalkylsilyl)amine, &#x2014;water, &#x2014;alcohol in an amount of less than 3% by weight, based on the composition, &#x2014;at least one addition selected from the group consisting of particulate metals, metal alloys and metal compounds and &#x2014;optionally at least one additive, where the pH of the composition is from 1 to 14 and the dry residue of the binder is from 1 to 50% by weight, based on the binder used, a process for the production thereof and also the use thereof for coatings, in particular for the protection of metals against corrosion.

Aqueous corrosion protection formulation based on silanes

A composition contains a mixture of 3-glycidyloxypropylalkoxysilane oligomers in a proportion of &#x2265;60% by weight based on the composition, which is storage stable over at least 8 weeks at a storage temperature of 60&#xb0; C., has a colour number of &#x2264;20 mg Pt&#x2014;Co/l, a pH of not less than 3.5 to not more than 6.5 and a monomer proportion of silane employed in the production of the composition of not more than 5 mol % based on the molar proportion of Si in the composition, wherein the proportion of epoxy groups bound in Si compounds and present in the composition is not less than 95 mol % based on the molar proportion of Si in the composition.

Composition containing 3-glycidyloxypropylalkoxysilane oligomers, process for the production thereof and use thereof

A process produces a C- to C-alkyltrialkoxysilane by hydrosilylation, wherein alkoxy represents methoxy, ethoxy or propoxy. Initially, a mixture is charged of at least one hydroalkoxysilane from the group of hydrotrialkoxysilane, hydroalkyldialkoxysilane, and hydrodialkylalkoxysilane, and a Pt catalyst. The mixture is then heated to a temperature of 30&#xb0; C. to 60&#xb0; C. Subsequently, with mixing, an omega-unsaturated or mono-unsaturated C- to C-hydrocarbon, at least one carboxylic acid and at least one alcohol as cocatalysts are added to the mixture. The mixture is then reacted and subsequently worked up to obtain the product.

Process for producing alkylalkoxysilanes

A process can prepare an isocyanurate compound by hydrosilylation. The compound is a tris[3-(trialkoxysilyl)propyl] isocyanurate, a tris[3-(alkyldialkoxysilyl)propyl] isocyanurate, and/or a tris[3-(dialkylalkoxysilyl)propyl] isocyanurate, The process includes (A) preparing a mixture of at least one carboxylic acid, a platinum catalyst, and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione; (B) heating the mixture to a temperature in the range of 40 to 140&#xb0; C.; (C) adding at least one H-silane among a hydrotrialkoxysilane, a hydroalkyldialkoxysilane, and a hydrodialkylalkoxysilane to the mixture; (D) adding at least one alcohol to the mixture prepared in step (C); and (E) isolating the isocyanurate compound.

Process for preparing tris[3-(alkyldialkoxysilyl)propyl]isocyanurates

Process for preparing tris[3-(dialkylalkoxysilyl)propyl]isocyanurates

A process can prepare an isocyanurate compound by hydrosilylation. The compound is a tris[3-(trialkoxysilyl)propyl] isocyanurate, a tris[3-(alkyldialkoxysilyl)propyl] isocyanurate, and/or a tris[3-(dialkylalkoxysilyl)propyl] isocyanurate. The process includes (A) preparing a mixture of at least one carboxylic acid, a platinum catalyst, and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione; (B) heating the mixture to a temperature in the range of 40 to 140&#xb0; C.; (C) adding at least one H-silane among a hydrotrialkoxysilane, a hydroalkyldialkoxysilane, and a hydrodialkylalkoxysilane to the mixture; (D) adding at least one alcohol to the mixture prepared in step (C); and (E) isolating the isocyanurate compound.

Process for preparing tris[3-(alkoxysilyl)propyl]isocyanurates

The present invention relates to a process for preparing a tris[3-(alkoxysilyl)propyl] isocyanurate from the group of tris-[3-(trialkoxysilyl)propyl] isocyanurate, tris[3-(alkyldialkoxysilyl)propyl] isocyanurate and tris[3-(dialkylalkoxysilyl)propyl] isocyanurate by hydrosilylation, by

Process for preparing tris[3-(alkoxysilyl)propyl] isocyanurates

The present invention relates to a composition comprising water and a mixture of [3-(2,3-dihydroxyprop-1-oxy)propyl]silanol oligomers and ethers thereof, wherein the proportion of epoxy groups bound within Si compounds which may be present in the composition is not more than 0.05 mol of epoxy groups per mole of Si in the composition. The invention further relates to a particular process for preparing a composition according to the invention and to the use thereof.

Aqueous composition comprising [3-(2,3-dihydroxyprop-1-oxy)propyl] silanol oligomers, process for preparation thereof and use thereof

The present invention relates to a process for preparing a tris[3-(alkoxysilyl)propyl] isocyanurate from the group of tris[3-(trialkoxysilyl)propyl] isocyanurate, tris[3-(alkyldialkoxysilyl)propyl] isocyanurate and tris[3-(dialkylalkoxysilyl)propyl] isocyanurate by hydrosilylation, by 

A tris[3-(alkoxysilyl)propyl] isocyanurate from the group of tris[3-(trialkoxysilyl)propyl] isocyanurate, tris[3-(alkyldialkoxysilyl)propyl] isocyanurate and tris[3-(dialkylalkoxysilyl)propyl] isocyanurate is prepared by hydrosilylation, by a) initially charging a mixture of at least one hydroalkoxysilane from the group of hydrotrialkoxysilane, hydroalkyldialkoxysilane, hydrodialkylalkoxysilane [called H-silane(s) for short] and a Pt catalyst, b) heating the mixture to a temperature of 40 to 170&#xb0; C., c) then adding or metering in 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, at least one carboxylic acid and at least one alcohol as cocatalyst while mixing, and d) leaving the mixture to react and then working up the product mixture thus obtained.

The invention relates to a method for treating an ammonium halogenide and/or residue containing organic aminhydrohalogenides, produced during the production of an amino-functional organosilane of general formula (I) RN[(CH)NH](Z)Si(R&#x2033;)(OR')(Ia), wherein the production of the amino-functional organosilane according to formula (Ia) is based on the conversion of a halogen-functional organosilane of general formula (II) X&#x2014;Z&#x2014;Si(R&#x2033;)(OR&#x2032;)(II), with excess ammonia or an organic amine of general formula (III) RNH[(CH)NH]R (III) and subsequently separating and treating the raw product and the resulting residue containing salt. The treatment consists of adding an essentially non-polar organic solvent and an aqueous lye to the residue. The mixture is reacted, subsequently the aqueous phase is separated from the organic phase, the organic solvent contained in the organic phase is removed from said phase and the residual organic phase is recovered.

Method for treating residues containing salt, produced during the production of amino-functional organosilanes

The invention relates to an aqueous composition based on tris-silylated amino-functional silicon compounds, which is substantially free of organic solvents and which substantially does not release any alcohol even during the cross-linking process, and to method for the production thereof, and to the use thereof, for example for the hydrophobization of metal, glass or mineral surfaces, such as concrete and bricks, as adhesion promoter or for rock consolidation, among other things.

Aqueous silane systems based on tris(alkoxysilylalkyl)amines and the use thereof

The present invention relates to a furnace () for melting heated glass using burners (), wherein the combustion energy is at least partially produced by oxy-fuel combustion, and wherein at least a portion of the oxygen used in the burners () is produced by separation, on a ceramic separation membrane (), from a gaseous mixture including oxygen, the oxygen from the separation being directly channeled into at least one burner ().

Aqueous silane systems for bare corrosion protection and corrosion protection of metals

A process for preparing an alkylamino-alkylalkoxysilane of formula (I) R&#x2014;(NR')&#x2014;Y&#x2014;Si(R)(OR)(I) in which R is a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, R&#x2032; is a hydrogen (H) or is a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, Y is a bivalent alkyl group from the group of &#x2014;CH&#x2014;, &#x2014;(CH)&#x2014;, &#x2014;(CH)&#x2014;, &#x2014;(CH)(CH(CH))(CH)&#x2014; and &#x2014;(CH)&#x2014;, Rand Rgroups are the same or different and are each a linear or branched alkyl group having 1 to 4 carbon atoms, and n is 0 or 1 or 2, by reacting an alkylamine, used in excess, distilling off excess free alkylamine, treating the remaining product mixture with the alkylaminoalkylalkoxysilane and working up.

Process for preparing alkylaminoalkylalkoxysilanes

The invention relates to an aqueous composition of bis-amino-functional silicon compounds which is essentially free of organic solvents and releases essentially no further alcohol in the course of crosslinking, and to processes for preparing it and to the use thereof, for example for hydrophobization of metal or glass surfaces.

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Rheinfelden, Germany

Eckhard Just