| 摘要 |
The invention relates to a matting agent based on silicon dioxide, the silicon dioxide particles having a particle size of 2.5 to 20 mu m and a moisture content of 0 to 65 wt.%, based on the matting agent, and being coated with 0.2 to 10 wt.% of a urea-urethane derivative or a mixture of urea-urethane derivatives. |
