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Rubber Anti-oxygen Agent K-208

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Rubber Anti-oxygen Agent K-208



K-208 agent consists of anti-oxygen new material, Nano-silicon dioxide and boron complex. The agent is a new multi-functional material which produced by in-situ composite technologies.



It is non-toxic, harmless to human and no environmental pollution.



Test Method


grey powder

visual inspection

Heating loss105X2h,%



Ignition loss800X2h),%



pH Value





1.    Ageing resistance performance. Nano-silicon dioxide, boron compounds and medium & small molecule can capture active radicals and close rubber active point, which can ensure the performance of vulcanized rubber. Therefore, it can significantly improve ozone-resistance and fatigue-resistance of rubber

2.    The Nano material can effectively improve the compactness and dimensional stability of rubber compound. Therefore, it can improve the comprehensive performance of the final products.


Usage and Dosage:

Add K-208 agent together with rubber antioxidant when mixing rubber master-batch.

2~4 units of total tire compound can be used for tire tread, tire sidewall.


Packing and Storage:

It is packed in Kraft paper bags lined with plastic film, net weight is 25kg/bag.

It should be stored in a cool, dry warehouse.

The shelf life is 24 months.