Listing ID #4291744
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Contact SupplierButyl rubber is a synthetic polymer, a copolymer of isobutylene with isoprene. The key advantages butyl rubber offers is superlative air-barrier performance with superior flex properties. Butyl Rubber abbreviated as IIR (Isobutylene-Isoprene copolymer) is extensively used to manufacture tire’s Inner Tube. It offers matchless ozone & weather resistance along with heat stability.
Parameter | IIR-1 | IIR-2 | IIR-3 | Test Method |
---|---|---|---|---|
Mooney viscosity ML 1+8 (125°Ð¡) | 35-47 | 46-56 | 35-65 | ASTM D 1646-06 |
Unsaturation, % mol. | 1.4-1.8 | 1.4-1.8 | 0.7-2.3 | Manufacturer Testing Method |
Drying loss, %, max. | 0.5 | 0.5 | 0.5 | ASTM D 5668 |
Mass fraction of an antioxidant Irganox 1010 %: | 0.02– 0.08 | 0.02– 0.08 | - | Manufacturer Testing Method |
Mass fraction of ash, %, max. | 0.35 | 0.4 | - | ASTM D 5667 |
Mass fraction of calcium stearate, %, max. | 1.2 | 1.2 | - | Manufacturer Testing Method |