C CHEMISTRY; METALLURGY
C08 ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08K Use of inorganic or non-macromolecular organic substances as compounding ingredients
C08K2201/00 Specific properties of additives
C08K2201/002 Physical properties
C08K2201/005 Additives being defined by their particle size in general