SYNTHOS Kralex® 1712 Styrene Butadiene Rubber
| 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® 1712 Styrene Butadiene Rubber.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Description
Material Notes:
KRALEX® 1712 is a standard grade of oil extended styrene butadiene rubber. It is produced by a technology of cold emulsion polymerisation based on soaps of rosin and fatty acids and contains 23.5% of chemically bounded styrene. It is coagulated by a system of acid and organic coagulant, contains 27% (37 PHR) of aromatic extender oil (DAE grade) and is stabilized by a staining antioxidant.KRALEX® 1712 is appropriate for rubber compounds used in the production of car tires and inner tubes, including tire re-trading, conveyor belts, footwear and various technical rubber articles.It is not approved for production of rubber articles coming into contact with foods or drinking water.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 | 36 – 46
@Temperature 100 °C
|
36 – 46
@Temperature 212 °F
|
(15-1.5 min); ASTM D3346 |
| 44 – 54
@Temperature 100 °C
|
44 – 54
@Temperature 212 °F
|
(1+4); ASTM D1646 | |
| Ash | <= 0.40 % | <= 0.40 % | ASTM D5667 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Tensile Strength, Ultimate | 18.5 MPa | 2680 psi | 35’/145°C; ASTM D412 |
| Elongation at Break | 370 % | 370 % | 35’/145°C; ASTM D412 |
| 300% Modulus | 0.0120 – 0.0170 GPa | 1.74 – 2.47 ksi | 35’/145°C; ASTM D412 |
| Chemical Properties | Metric | English | Comments |
|---|---|---|---|
| Acid Value | 3.6 – 5.4 | 3.6 – 5.4 | 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 | Staining | |
| Compound Safety ts 1 (min.) | 2.2-4 | ASTM D5289 |
| Ethanol-toluene Extract (%) | 29-35 | ASTM D5774 |
| Extender Oil Content (%) | 27 | |
| Extender Oil Grade | DAE | |
| Maximal Moment (dNm) | 15-18 | ASTM D5289 |
| Minimal Moment (dNm) | 2.0-2.6 | ASTM D5289 |
| Optimal Vulcanization t’ 90 (min.) | 11-15 | ASTM D5289 |
| Soaps content (%) | <= 0.3 |
