Patent · US Active

Organic colouring agents and coloured polymer compositions with a high stability to weathering

US8641784B2 · kind B2 · utility

2Cited by

43References

11Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

Alexander Meyer · Mülheim an der Ruhr, DE
Michael Wagner · Dortmund, DE
Joerg Reichenauer · Krefeld, DE

Key dates

Filing date	Dec 15, 2011
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Dec 15, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0034
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to organic coloring agents with a high color stability to weathering for thermoplastics. The invention furthermore relates to a polymer composition containing at least one thermoplastic and at least one organic coloring agent, preferably a combination of at least two organic coloring agents, of a specific structure. The invention moreover relates to the use of the coloring agents according to the invention for coloring polymer compositions, in particular for transparent formulations such as are required for the production of panes for use in buildings, motor vehicles and track vehicles or aircraft.

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