| 主权项 |
1. A polymer composition comprising
a. at least one transparent polycarbonate or copolycarbonate; b. at least one inorganic IR absorber selected from the group consisting of boride compounds, tungstates, and mixtures thereof, c. optionally an inorganic, nano-scale pigment, d. a colouring agent or a colouring agent combination having structures selected from: III. (1a) and/or (1b), (7) IV. (1a) and/or (1b), (4), (7) V. (1a) and/or (1b), (5), (7) X. (3), (4) XL (3), (5) XIV. (3), (4), (7) XV. (3), (5), (7) XX. (1a) and/or (1b), (8b) XXI. (7), (4) XXII. (7), (5), wherein the structures are as follows: wherein
Ra and Rb, independently of one another, represent a linear or branched alkyl radical, or halogen;n, independently of the respective R, represents a natural number from 0 to 3, the radical for n=0 being H; wherein
R represents H or a p-methylphenylamine radical; wherein
R3 represents 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 from 0 to 4; 8b: wherein
the radicals R(5-20), independently of one another, represents hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, neopentyl, hexyl, thexyl, fluorine, chlorine, bromine, sulfone or CN, andM represents aluminium, nickel, cobalt, iron, zinc, copper or manganese wherein the colouring agent of structure (7) has a bulk volume of from 2 to 10 l/kg, a specific surface area of from 5 to 60 m2/g, and a pH value of from 4 to 9, and wherein the nano-scale pigment is carbon black and the IR absorber is lanthanum hexaboride. |
