Henkel Ag & Company, Kgaa

Dwi an Der Rwth Aachen E.v.

Jürgen Groll

Martin Möller

Peter Greiwe

Haitao Rong

Mirko Weide

Marina Glesius

Matthias Lüken

Stefan Stumpe

Christine Mohr

Matthias Eberhardt

The invention relates to coatings having a contact angle hysteresis with water measured by the sessile drop method of at most 20&#xb0;. The coatings can be produced from a mixture of at least two different stellate prepolymers and/or stellate prepolymer/nanoparticle complexes which may cross-link to each other and to the surface of the substrate coated, wherein the stellate prepolymers and/or stellate prepolymer/nanoparticle complex have at least three hydrophilic polymer branches before cross-linking which are themselves soluble in water with on all or a part of the free ends thereof, silyl end groups Rof general formula (I): R=&#x2014;CR&#x2014;Si(OR)(R), where R=H or straight or branched chain 1-6C alkyl, OR=a hydrolysable group, R=linear or branched chain 1-6C alkyl and r=a number from 1 to 3 and the optionally non silyl end group carrying ends have reactive end groups which a reactive with each other, with the substrate to be coated optional entities included in the coating and/or with the silyl end groups with the proviso the mixture (a) has at least one stellate prepolymer with 3-5 hydrophilic polymer branches and (b) at least one stellate prepolymer and/or a stellate prepolymer/nanoparticle complex with a least 6 hydrophilic polymer branches. The invention further relates to a method for production for said coatings and stellate prepolymers as used in the coatings. The invention furthermore relates to the use of the stellate prepolymers as additives in various materials for temporary or permanent anti-soiling treatment of surfaces.

Multifunctional stellate prepolymer mixtures, production and use and coatings made thereof

The present invention relates to a label-free biosensor system, a method for manufacturing said label-free biosensor system, its use for detecting biochemical reactions and/or bindings, enzymatic reactions, nucleic acid hybridizations, protein-protein interactions and protein-ligand interactions, as well as an assay method for detecting and/or quantifying an analyte of interest in a biological sample which comprises detecting the Recognition Induced Birefringence (RIB) generated in the presence as opposed to the absence of said analyte by bringing said sample into contact with said label-free biosensor system.

Biosensor system based on recognition induced birefringence (RIB)

The invention relates to compositions for treating a hard surface, in particular for cleaning and/or dirt-repellent treatment of a hard surface, containing a) at least one multi-armed silyl polyalkoxylate of the formula (I) (H-A)-Z-[A-B&#x2014;Si(OR)(R)](I), where Z is a (m+n)=valent radical having at least three carbon atoms, A is a divalent polyoxyalkylene radical, wherein the m+n polyoxyalkylene radicals bound to Z can be different from one another, and wherein one radical A is in each case bound to Z via an oxygen atom belonging to Z, and one oxygen atom belonging to A is bound to B or hydrogen, B is a chemical bond or a divalent organic radical having 1 to 50 carbon atoms, ORis a hydrolysable group, Rand Rindependently of one another are a linear or branched alkyl group having 1 to 6 carbon atoms and r is an integer from 1 to 3, and m is an integer &#x2267;1 and n is 0 or an integer &#x2267;1, and m+n has a value from 3 to 100, b) at least one surfactant, c) water and/or at least one nonaqueous solvent, d) if appropriate further conventional components of surface treatment and/or cleaning compositions which are compatible with the remaining components of the composition.

Compositions for treating hard surfaces comprising silyl polyalkoxylates

Growing community of inventors

Aachen, Germany

Jürgen Groll