Polyhydroxyfunctional polysiloxane as anti-adhesive and dirt-repellant additives

US8486188B2 · kind B2 · utility

Assignee

• BYK-CHEMIE GMBH · DE

Inventors

• Wojciech Jaunky · Wesel, DE
• Albert Frank · Xanten, DE
• Hans-Willi Bogershausen · Tönisvorst, DE
• Wolfgang Griesel · Wesel, DE
• Petra Della Valentina · Dinslaken, DE
• Jürgen Omeis · Wulfen, DE

Key dates

• Filing date: Jul 6, 2009
• Grant date: Jul 16, 2013
• Expiry date: Jul 6, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/46
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a method for production of polyhydroxyfunctional polysiloxanes with branched polyglycidol polyether groups, in which firstly at least one allylic or methallylic starting material is reacted with at least one glycidol, such that an allyl polyether or methallyl polyether is formed, and then the allyl polyether or methallyl polyether thus produced is added to a Si—H functional alkyl polysiloxane in the presence of an acid buffering agent. The invention further relates to polysiloxanes, which may be obtained by said method and the use of the polysiloxanes in coating agents, polymeric coating masses and thermoplastics.