Patent ID: 11912584
Assignee: MARTINSWERK GMBH
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 13:
14. The polymer composition of claim 1, wherein:
the fine alumina particle size component has a d50 particle size in a range from 1 to 4.5 μm, and is characterized by a BET surface area in a range from 0.8 to 4 m2/g;
the coarse alumina particle size component has a d50 particle size in a range from 12 to 30 μm, and is characterized by a BET surface area in a range from 0.25 to 1 m2/g; and
the amount of the fine alumina particle size component in the alumina product is from 40 to 80 wt. %, based on the total weight of the fine alumina particle size component and the coarse alumina particle size component.