Improvement of the dynamic properties of vulcanized rubber products.
There is a strong catalytic effect on the crosslinking reaction of diene rubber. As the amount added increases, the vulcanization rate rises, and the crosslink density and reversion resistance increase. Significant improvements in the dynamic properties of vulcanized rubber products can be expected. Struktol 73A and Struktol ZEH are commonly used with stearic acid, either partially or fully replaced. There are no bloom concerns.
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basic information
Structol Activator 73A - A mixture of zinc soaps of aliphatic and aromatic carboxylic acids - Beige, tablet form ■ Significant active effect; modulus increase ■ Suppression of sulfur reversion ■ Reduction of high-temperature compression set ■ Reduces zinc oxide dependency when replaced with stearic acid Structol ZEH/ZEH-DL/ZEH-75 - Zinc 2-ethylhexanoate - DL: Silica mixture, active ingredient 67% - 75: Silica mixture, active ingredient 75% - Light yellow, available in liquid and powder forms ■ Stress relaxation, reduces creep ■ Suitable for soluble EV sulfur systems ■ Improved dynamic properties ■ Improved compression set at low temperatures Structol IB531 - A mixture of alkanolamine ammonium salts and silica - Cream-colored, highly flowable powder ■ Promotes vulcanization of conventional sulfur crosslinking systems ■ Activates fillers with high-reinforcement white fillers ■ Maintains scorch safety while reducing vulcanization time ■ Can partially replace secondary accelerators ■ Suitable for injection, transfer, and continuous vulcanization
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Applications/Examples of results
Improvement of rubber processability ■ Low viscosity formulation ■ Filler activation ■ Sponge formulation ■ Vulcanization activation ■ Improvement of high-temperature tear resistance
Line up（5）
| Model number | overview |
|---|---|
| Structol Activator 73A | Mixture of zinc soaps of aliphatic and aromatic carboxylic acids, tablets |
| Structol ZEH | Zinc 2-ethylhexanoate, liquid |
| Structol ZEH-DL | Zinc 2-ethylhexanoate, silica mixture, powder |
| Structol ZEH-75 | Zinc 2-ethylhexanoate, silica mixture, powder |
| Structol IB 531 | Alkanolamine ammonium salt and silica mixture, free-flowing powder |
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Company information
We offer a wide range of German-made processing aids for rubber under the "Structol" brand, starting with lubricants. For many years, we have been favored by numerous rubber manufacturers in Japan, including the four major tire manufacturers, as well as many large, medium, and small companies. In recent times, with rising electricity costs and increasing raw material prices putting pressure on cost reduction, "Structol" contributes to reducing production costs for rubber product manufacturers by improving productivity, enhancing quality, and reducing defects.