| 摘要 |
Disclosed herein is an agent comprising at least one inorganic pigment selected from the group of iron oxides, iron oxide hydroxides, chromium oxides, titanium dioxides and/or mixed-phase pigments based on metal oxides, one or more oils, at least one Fischer-Tropsch wax having a congealing point between 50 and 140°C and a needle penetration at 25°C of up to 1 mm, and at least one second wax having a congealing point between 50 and 140°C, wherein this wax is not a Fischer-Tropsch wax nor a polyolefin wax wherein the total amount of Fischer-Tropsch wax and second wax is from 8 to 20 wt% based on the total amount of the agent. At least 50 wt% of the agent has a particle size of 1 mm or less. The second wax may be selected from the group of mineral waxes, montan waxes, vegetable waxes and/or animal waxes. The disclosure also relates to methods of forming the agent and the use of the agent for colouring building materials, preferably asphalt, bitumen, bituminous mixtures, tar and tar-containing compositions. |
