Henkel Ag & Company, Kgaa

Marina Glesius

Haitao Rong

Matthias Schweinsberg

Heinz-Dieter Soldanski

Martin Möller

Peter Greiwe

Jürgen Groll

Christine Mohr

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

Aqueous liquid compositions containing: (a) at least one alkyl ether sulphate (b) at least one multi-armed silyl polyalkoxylate of the formula (I) (H-A)-Z-[A-B&#x2014;Si(OR)(R)](I), where Z is an (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, and (c) 0-50% of at least one alkylsulphonate and/or arylsulphonate; (d) 0-15% of at least one alkyl sulphate and/or (e) 0-20% of at least one amphoteric surfactant cause an improvement of the drying and draining behavior in the cleaning of hard surfaces, in particular dishes.

Cleaning compositions for hard surfaces comprising a silyl polyalkoxylate

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Ober-Ramstadt, Germany

Marina Glesius