Unit Mixes Using oil/black masterb

Unit Mixes Using oil/black masterbatches and/or modern mixers, acceptable compound can be produced with a unit mix. These mixes are acceptable provided that a minimum 75% carbon black dispersion can be shown for the compound after it has been processed (calendered or extruded) and all required physical properties are met. Slush Mixes Slush Mixing is defined as charging polymer, oil and black into the the mixer simultaneously. Since the only advantage to slush mixing is a re- duction of mix time which carries the disadvantage of poor black dispersion, Compounding absolutely forbids its use for any compound which comes in contact with the road surface.