Specialty Products of Sankyo Yuka


 Active N (Recycle Asphalt activator, Extra Heavy Naphthenic Base-Oil)

Pavement Mixture (Asphalt and Stones) is produced in relatively small Mixing Plant, the location of which is scattering around Japan, because the Pavement Mixture could be delivered only to the road paving site of short distance by special Lorry equipped with heating system.
Total production of Pavement Mixture is ; 60 Million tons per year.

Out of them ; 20 Millions tons per year (approx. one third) is Recycled Pavement Mixture.

Due to the shortage of stones, as well as in order to decrease disposal waste of Old Pavement Mixture for environmental reason, Recycle-use of Old Pavement Mixture became important.

Old Pavement Mixture could become as good as the new Pavement Mixture by adding some kinds of Base-oil to re-activate the old Asphalt portion, although a certain volume of new Asphalt must be also added.

Aromatic Extract has long been used as activator base-oil because of its good solubility and cheapness, but now, every body came to know the very high Carcinogenic Risk of Aromatic Extract, and usage of Aromatic Extract is decreasing sharply.






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