Organic colouring agents and coloured polymer compositions with a high stability to weathering
AssigneeBayer MaterialScience AG
InventorsAlexander Meyer, Michael Wagner, Jörg Reichenauer
Life of this patent
Estimating the term…
Abstract
The present invention relates to organic colouring agents with a high colour stability to weathering for thermoplastics. The invention furthermore relates to a polymer composition containing at least one thermoplastic and at least one organic colouring agent, preferably a combination of at least two organic colouring agents, of a specific structure. The invention moreover relates to the use of the colouring agents according to the invention for colouring 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.
Claims15
A colouring agent composition comprising a colouring agent or a colouring agent combination of the structures selected from the group consisting of:
- XIV. (3), (4), (7)
- XV. (3), (5), (7)
- XXI. (7), (4)
- XXII. (7), (5)
- wherein the structures are as follows:
- wherein
- R is selected from the group consisting of H and the p-methylphenylamine radical;
- wherein
- R3 is a halogen;
- n=4;
- wherein
- R1 and R2, independently of one another, represent a linear or branched alkyl radical, or halogen;
- n represents a natural number between 0 and 4;
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.