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SYNTHOS Kralex® 1507 Styrene Butadiene Rubber
| Category | Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE) |
| Manufacturer | SYNTHOS Kralupy a.s. |
| Trade Name | Kralex® |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | SYNTHOS Kralex® 1507 Styrene Butadiene Rubber.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
KRALEX® 1507 is a standard grade of styrene butadiene rubber. It is produced by a technology of cold emulsion polymerization based on soaps of rosin and fatty acids and contains 23.5% of chemically bonded styrene. It is coagulated by a system of acid and organic coagulant, does not contain extender oil and is stabilized by a non-staining antioxidant.KRALEX® 1507 is appropriate for rubber compounds used in the production of floor coverings, bicycle tires, footwear, children toys and various rubber articles having light color shades.KRALEX® 1507 does not contain any components excluding usage of KRALEX® 1507 for production of articles coming into contact with foodstuffs.Producer of KRALEX® 1507 is not responsible for hygienic parameters of the final vulcanizate.Synthos was formerly known as Kaucuk. All information provided by Synthos.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Volatiles | <= 0.75 % | <= 0.75 % | ASTM D5668 |
| Mooney Viscosity | 34 - 42 @Temperature 100 °C |
34 - 42 @Temperature 212 °F |
(1+4); ASTM D1646 |
| Ash | <= 0.40 % | <= 0.40 % | ASTM D5667 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Tensile Strength, Ultimate | 23.0 MPa | 3340 psi | 35'/145°C; ASTM D412 |
| Elongation at Break | 380 % | 380 % | 35'/145°C; ASTM D412 |
| 300% Modulus | 0.0140 - 0.0200 GPa | 2.03 - 2.90 ksi | 35'/145°C; ASTM D412 |
| Chemical Properties | Metric | English | Comments |
|---|---|---|---|
| Acid Value | 5.0 - 7.5 | 5.0 - 7.5 | ASTM D5774 |
| Styrene Content | 23.5 % | 23.5 % | ASTM D5775 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| 50% of Vulcanization t' 50 (min.) | 5.5-9.5 | ASTM D5289 |
| Antioxidant Grade | Non-Staining | |
| Compound Safety ts 1 (min.) | 2-3.8 | ASTM D5289 |
| Maximal Moment (dNm) | 18.5-21.5 | ASTM D5289 |
| Minimal Moment (dNm) | 2.0-2.5 | ASTM D5289 |
| Optimal Vulcanization t' 90 (min.) | 12-17 | ASTM D5289 |
| Soaps content (%) | <= 0.3 |
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