Evonik Operations Gmbh

Evonik Degussa Gmbh

Evonik Goldschmidt Corporation

Berend-Jan De Gans

Markus Hallack

Wilfried Knott

Michael Ferenz

Stefan Silber

Frank Schubert

Joachim Venzmer

Matthias Naumann

Horst Dudzik

Verena Dahl

Sascha Herrwerth

Frauke Henning

Martin Glos

Mona Seyfried

Florian Düllmann

Michael Fiedel

Philippe Favresse

Kathrin Lehmann

Christian Hartung

Thomas Ebbrecht

Dirk Kuppert

Rüdiger Landers

Alexandra Trambitas

Petra Hinrichs

Ruediger Landers

Susann Wiechers

Roger Reinartz

Sylvia Hicking

Giuseppe Giuffre

A method using silicon dioxide improves the cathodic anticorrosion effect of ground coats, preferably of a zinc primer, based on epoxy-functional polymers and at least one metal particle.

Use of silicon dioxide for improving the cathodic anticorrosion effect of ground coats

Curable condensation compounds are obtainable by a reaction of non-end-equilibrated acetoxy group-bearing siloxanes with at least one alkoxy-functional polysiloxane, in the presence of a catalyst.

Curable condensation compounds based on alkoxy-functional polysiloxanes

A process for producing an aqueous polyorganosiloxane hybrid resin dispersion includes emulsifying a polyorganosiloxane hybrid resin solution of a polyorganosiloxane hybrid resin and an organic or semi-organic solvent with an emulsifier solution that includes at least one emulsifier based on a partly hydrolysed polyvinylacetate and removing the organic or semi-organic solvent.

Aqueous polyorganosiloxane hybrid resin dispersion

Curable condensation compounds are useful, obtainable by the reaction of end-equilibrated acetoxy group-bearing siloxanes with at least one alkoxy-functional polysiloxane, in the presence of a catalyst.

A universal slip and levelling additive having a recoatable or reprintable property contains polyoxyalkylene-polysiloxane copolymers of general formula (I)

Universal slip and flow control additives with recoatable quality

An aqueous polyorganosiloxane hybrid resin dispersion includes at least one polyorganosiloxane hybrid resin and at least one emulsifier based on partly hydrolysed polyvinylacetates. The dispersion has a solids content of 30.0% by weight-70.0% by weight, preferably 45.0% by weight-55.0% by weight, based on the polyorganosiloxane hybrid resin dispersion, and the residual solvent content is <6.0% by weight, preferably <2.5% by weight, more preferably <1.0% by weight, based on the polyorganosiloxane hybrid resin dispersion.

A curing agent mixture is for coatings that cure at room temperature. The curing agent mixture can include (A) 10-60% by weight, preferably 20-60% by weight, more preferably 30-50% by weight, of a polysiloxane, (B) 40-90% by weight, preferably 40-80% by weight, more preferably 40-70% by weight, of an amino-functional alkoxysilane and (C) 1-10% by weight, preferably 2-7% by weight, more preferably 3-5% by weight, of a guanidine compound. The stated amounts of components (A), (B), and (C) add up to 100% by weight and are based on the curing agent mixture.

Curing agent mixture

An aqueous polyorganosiloxane hybrid resin dispersion can include at least one polyorganosiloxane hybrid resin, at least one amphiphilic emulsifier, and water.

The present invention provides a curable coating composition comprising at least one linear or cyclic polysiloxane containing at least one quaternary ammonium group, a process for producing the aforesaid coating composition, and a process for producing a coating with the curable coating composition, and also the coatings and coating compositions themselves that are obtainable by the processes described.

Coating composition comprising polysiloxane quats

The invention relates to microemulsions which comprise, as oil phase, a polysiloxane containing at least one quaternary ammonium group, methods for production thereof and also to the use of such microemulsions.

Microemulsion of polysiloxanes containing quaternary ammonium groups, production and use thereof

The invention relates to emulsions containing hydroxyl compound bearing silyl groups, to the production and to the use thereof.

Emulsions based on hydroxyl compounds bearing silyl groups

Use of one or more mixed curable hydroxyl-containing silyl polyethers as a constituent of compositions, as modifiers for surfaces, the silyl polyethers being prepared by DMC-catalysed alkoxylation of epoxy-functional alkoxysilanes.

Process for modifying surfaces

The present invention related to particles and composite particles, their uses and a novel process for producing them from alkoxysilyl-group-carrying alkoxylation products.

Particles and composite particles, their uses and a novel process for producing them from alkoxysilyl-group-carrying alkoxylation products

The subject matter of the present invention relates to a low-viscosity aqueous hot-cure flexible polyurethane foam stabilizer solution which can be used in the production of hot-cure flexible polyurethane foams, wherein the low-viscosity aqueous hot-cure flexible polyurethane foam stabilizer solution comprises the following components: &#x2267;40% to &#x2266;70% by weight of polyethersiloxane, &#x2267;0.5% to &#x2266;20% by weight of organic surfactant, &#x2267;10% by weight of water, &#x2267;0% by weight of organic solvent additions, in which the polyethersiloxane has the following formula (I) &#x2014;R&#x2014;Si(CH)O&#x2014;[Si(CH)(OSi(CH)R)O&#x2014;]&#x2014;[Si(OSi(CH)R)O&#x2014;]&#x2014;[Si(CH)O&#x2014;]&#x2014;[SiCHRO&#x2014;]&#x2014;[SiCHRO&#x2014;]&#x2014;[SiCHRO]&#x2014;[SiRRO]&#x2014;Si(CH)&#x2014;R(I).

Use of low-viscosity aqueous hot-cure flexible polyurethane foam stabilizer solutions containing polyethersiloxanes in the production of hot-cure flexible polyurethane foams

Growing community of inventors

Muelheim an der Ruhr, Germany

Berend-Jan De Gans