Patent · US Expired

Containers made of a branched polycarbonate

US6613869B1 · kind B1 · utility

35Cited by

3References

15Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Klaus Horn · Dortmund, DE
Ralf Hufen · Duisburg, DE
Wolfgang Alewelt · Krefeld, DE
Peter Gebauer · Troisdorf, DE
Franky Bruynseels · Sint-Gillis-Waas, BE

Key dates

Filing date	Apr 12, 2002
Grant date	Sep 2, 2003
Priority date	—
Expiry date	Apr 12, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/1397
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A branched polycarbonate resin suitable for making containers is disclosed. The polycarbonate is characterized in that at 260° C. and shear rate of 10 s−1 it has a melt viscosity of 5500 to 900 Pas, and in that at 260° C. and shear rate of 1000 s−1 it has a melt viscosity of 880 tom 1500 Pas, and in that it has a melt flow index (MFR) of 0.1 to 3.0 g/10 min. A container made of the polycarbonate exhibits great breaking strength.

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