Patent · US Active

Talc-filled polycarbonate compositions

US11535747B2 · kind B2 · utility

0Cited by

11References

10Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Tim Hungerland · Cologne, DE
Tanja Cassel · Oberhausen, DE

Key dates

Filing date	Dec 12, 2018
Grant date	Dec 27, 2022
Priority date	—
Expiry date	Jun 20, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH05K7/2039
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to the use of PMMI copolymers for reducing the decrease in molecular weight of the polymer induced by addition of talc in compositions based on aromatic polycarbonate. At the same time, the mechanical, optical and rheological properties of the thermoplastic composition, in spite of the addition of the PMMI copolymer, remain good and are in some cases even improved.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.