Wacker Chemie Ag

Wacker-chemie Gmbh

Consortium Fur Elektrochemische Industrie Gmbh

Wacker Chemicalcorporation

Huels Silicone Gmbh

Uwe Scheim

Peter Schoeley

Detlev Ostendorf

Wolfgang Ziche

Marko Prasse

Wolfram Schindler

Daniel Schildbach

Peter Jenkner

Volker Stanjek

Bernd Pachaly

Yang Chen

Holger Rautschek

Herbert Barthel

Torsten Gottschalk-Gaudig

Gabriele Dineiger

Michael A Brook

Daniel J Mania

Robert Lehnert

Elke Fritz-Langhals

Otto Schneider

Hans-Juergen Eberle

Hartmut Ackermann

Marco Hofmann

Marco Kauschke

Hans-Jürgen Eberle

Anja Roscher

Bernhard Ruhland

Stephan Marrack

Peter Schöley

Steffen Lau

Uwe Bankwitz

Bicyclic guanidines are prepared by reacting dialkylenetriamines with dialkylcarbonates in the presence of a silane of the formulaSi(OR)R  (IV)and/or their partial hydrolysates, with the proviso that contain minimally one unit Rwhich is monovalent optionally substituted hydrocarbon radial with 3 to 10 carbon atoms.

Process for preparing bicyclic guanidines

Silicone-containing cartridges having a plunger at one end thereof are effectively sealed against moisture penetration by introducing a silicone oil composition having a viscosity of from 5000 mPa&#xb7;s to 100,000 mPa&#xb7;s between the walls of the plunger and the interior surface of the cartridge wall.

Method for packaging silicone compounds

The invention relates to cross-linkable compositions comprising

Cross-linkable masses based on organosilicon compounds

Aqueous dispersions which are storage stable and cure to tack-free elastomers upon removal of water contain water, alkoxysilyl-terminated polyethers and alkoxy-functional siloxanes, optionally catalysts, fillers, and other additives customary in dispersions of organosilicon compounds.

Aqueous dispersions of organosilicon compounds

Artificial stone having excellent mechanical and weatherability properties is prepared from a highly filled crosslinkable organosilicon composition where the filler comprises at least 20 weight percent of coarse fillers, the organosilicon component contains silicon-bonded alkoxy and or hydroxyl groups, with a catalyst containing a metal compound and an amidine or guanidine.

Curable organopolysiloxane compositions

A grout compositions, storable with the exclusion of water, and crosslinkable upon ingress of water at room temperature is prepared by admixing a relatively minor proportion of a moisture-curable organopolysiloxanes, composition containing an alkoxysilyl-terminated, urethane-group-containing polymer and a silicone resin, with a major proportion of aggregate.

Curable compositions

Artificial stone which exhibits minimal visual change when exposed to weathering, UV light, and heat, is prepared by shaping and curing a crosslinkable composition based on crosslinkable organopolysiloxanes as a binder, at least 85% by weight of a filler component, the filler component containing at least 20% by weight of coarse grain mineral filler having grain sizes of 0.2 mm to 10 mm.

Cross-linkable compositions based on organosilicon compounds and thus produced molded bodies

Stable emulsions of silicone terminated polyethers and silicone resins are used to prepare one-component grout with very good mechanical properties gained within a short time after the grout cures by adding a proportion of aggregate to the emulsions.

One component ready-to-use tile grout

Curable organosilicon compositions with good adhesion to substrates and good workability contain a condensable base organopolysiloxane, a carbamato-alkyl-functional alkoxysilane, and a heterocycle substituted at a heteroatom by an alkoxysilylmethyl group.

An artificial stone can be prepared by binding a suitable stone filler with a binder which contains a silicon bonded, hydroxyl-functional silicone resin also optionally bearing silicon bonded alkoxy groups, and an organosilicon compound which is a silane or siloxane bearing silicon bonded alkoxy groups. The artificial stone is resistant to the effects of UV light as well as heat.

Curable RTV-1 organopolysiloxane compositions which maintain the properties and adhesive strength even in hot moist conditions include a bis-hydroxyl-functional organopolysiloxane, an organosilicon compound comprising an &#x3b1;-alkoxysilane bonded through a methylene group to a heteroatom of a heterocyclic compound, and a branched, non-resinous alkoxyfunctional organopolysiloxane containing at least 20 mol percent of RSiOmoieties where Ris a hydrocarbyl radical.

Crosslinkable compositions based on organosilicon compounds

Moisture curable RTV-1 silicone elastomers with hydrophilic surfaces are produced from crosslinkable compositions containing a polyoxyethylene ether glycol terminated with both a Chydrocarbon group and an alkoxysilyl group.

Cross-linkable compositions based on organosilicon compounds

Compounds of the formula where Reach individually is identical or different and is a hydrocarbon radical, Reach individually is hydrogen or a methyl radical, n is an integer from 6 to 11, and m is 0 or 1, with the proviso that the sum of the number of carbon atoms in the three radicals Rin the compound of the formula (I) is 6 to 24, can be admixed with curable polymer compositions to form products with hydrophilic surfaces, or can be applied to surfaces to render them hydrophilic.

Organosilicon compounds and their use for producing hydrophilic surfaces

Crosslinkable compositions based on organosilicon compounds, more particularly RTV-1 sealants, contain

The invention provides alkoxy-crosslinking rubber mixtures (M) which comprise a compound of the general formula (1) M(OR)(OSiR)(1) and polymers with end groups of the general formula (2) &#x2014;SiR(OR)(2), where M is defined as Nb or Ta, R, R; Rand Rare each hydrocarbon radicals having 1 to 10 carbon atoms, n is 1, 2, 3 or 4, and a is 0 or 1.

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Coswig, Germany

Uwe Scheim