Patent · US Expired

Polycarbonate composite material which can be thermoplastically shaped, methods for the production thereof, use of the same and a flame-proof polycarbonate moulded part

US6872798B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

ROEHM GMBH & CO. KG · DE

Inventors

Detlef Bumann · Zwingenberg, DE
Andreas Fetzer · Emmelshausen, DE
Michael Meier-Kaiser · Pfungstadt, DE

Key dates

Filing date	Nov 2, 2001
Grant date	Mar 29, 2005
Priority date	—
Expiry date	Nov 15, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31565
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a polycarbonate composite material which can be thermoplastically shaped and which comprises at least two layers. The invention is characterised in that at least one layer comprises an LOI value of lower than 29 and at least one layer comprises an LOI value of higher than 29. The invention also relates to methods for producing said material, the use of the same and flame-proof polycarbonate moulded parts.

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