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

US8816000B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Haitao Rong · Darmstadt, DE
• Peter Greiwe · Heidelberg, DE
• Jürgen Groll · Oberstotzingen, DE
• Christine Mohr · Allschwil, CH
• Marina Glesius · Ober-Ramstadt, DE
• Martin Möller · Aachen, DE

Key dates

• Filing date: Feb 22, 2010
• Grant date: Aug 26, 2014
• Expiry date: May 20, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2210/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to coatings having a contact angle hysteresis with water measured by the sessile drop method of at most 20°. 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 R1 of general formula (I): R1=—CRa2—Si(ORb)r(Rc)3−r, where Ra=H or straight or branched chain 1-6C alkyl, ORb=a hydrolysable group, Rc=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/…