Polysiloxane-polycarbonate block cocondensates

US9845379B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Alexander Meyer · Mülheim an der Ruhr, DE
• Klaus Horn · Dortmund, DE
• Thomas Pfingst · Tönisvorst, DE
• Sebastian Wetzel · Schwelm, DE

Key dates

• Filing date: Oct 6, 2014
• Grant date: Dec 19, 2017
• Expiry date: Oct 6, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/448
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to polysiloxane-polycarbonate block cocondensates comprising particular rearrangement structures and having improved rheological properties and melt stability as well as to mouldings and extrudates made from these polysiloxane-polycarbonate block cocondensates.