Rubber Additives

Otsuka Chemical specializes in the synthesis of hydrazide derivatives, development of functionalized specialty rubber compound additives, and manufacture and sales of rubber additives, foaming agents and inorganic fillers.
These specialty rubber additives can significantly improve the endurance, fuel efficiency properties, performance, etc. of rubber compounds. Otsuka Chemical’s mission is to protect the environment through its contributions to enhancing the performance of rubber products.

• Foaming Agent
• TERRACESS

Otsuka Chemical's R&D activities for rubber additives

Otsuka Chemical has its own well-established lab facilities to evaluate rubber compound properties for developing next generation rubber additives. With these application-oriented lab testing methods, we can propose customized additive solutions with optimized formula and processes to our customers.

Rubber compound sample preparation and testing equipment

Organic chemicals for rubber applications (Acroad series)

Part of its rubber additive product portfolio, Otsuka Chemical has named its unique organic chemicals “Acroad”. “Acro” is Greek and means “top” or “most advanced”, while “ad” is short for “additive”. The name also contains the word “road”, which signifies tire mobility. This brand name compromises the efforts of Otsuka Chemical to provide the most advanced performance by means of its sophisticated additive technologies.

Features of organic chemicals for rubber applications

Organic chemicals for rubber applications are represented by the following product range, each product having specific performance advantages.

Filler Dispersion

1. Natural rubber/carbon black compounds
   Carbon black dispersion in natural rubber can be improved with as few dosages as 0.2 to 2 phr during mixing. The obtained rubber vulcanizates feature low heat build-up and low hysteresis loss. For tire applications, it results in higher fuel efficiency and endurance.. For vibration-proof usage, it contributes to a lower dynamic to static stiffness ratio.
2. Synthetic rubber/silica and carbon black compounds
   Silica and carbon black dispersion in synthetic rubber (SBR/BR/NBR) can be improved with as few dosages as 0.4 to 2 phr during mixing. The obtained rubber vulcanizates feature low heat build-up and low hysteresis loss. For tire applications, it results in higher fuel efficiency and endurance.

Endurance (Natural rubber and synthetic rubber/carbon black compound)

The tear resistance of rubber vulcanizates can be improved with as few dosages as 0.2 to 2 phr during mixing. This results in higher tear/crack propagation resistance and longer service life.

Constant viscosity (Natural rubber raw material)

The Mooney viscosity stability of CVNR (constant viscosity natural rubber) can be improved with as few dosages as 0.1 to 0.3 phr during the natural rubber manufacturing process. It provides improved quality without the mastication process for most natural rubber application situations.

Applications

• Truck bus and off-road tires (natural rubber/carbon black compounds)
• Passenger car tires (synthetic rubber/silica compounds)
• Vibration-proof conveyor and belt compounds
• Other industrial rubber applications
• Natural rubber raw stock