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- Styron Buna® SB 1739 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR)
Styron Buna® SB 1739 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR)
| Category | Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE) , Styrene Butadiene Rubber |
| Manufacturer | Styron |
| Trade Name | Buna® |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Styron Buna® SB 1739 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR).pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Composition: Buna® SB 1739 – Schkopau is manufactured by cold polymerization using mixed rosin acid /fatty acid soaps. In relation to solid rubber it is plasticized with 37.5 parts of TDAE oil which does comply with EU DIRECTIVE 2005/69/EC for use in tyres within the EU. A discoloring stabilizer is added during the production process.Application: Buna® SB 1739 – Schkopau is a general purpose rubber. It can be processed in all sectors of the tyre and rubber industry. The main application is tyre production, imparting improved grip and handling performance due to its increased styrene content.Information provided by Styron
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 0.950 g/cc | 0.0343 lb/in³ | |
| Volatiles | 0.30 % @Treatment Temp. 105 °C, Time 3600 sec |
0.30 % @Treatment Temp. 221 °F, Time 1.00 hour |
5 g in hot air oven; ASTM D5668 |
| Mooney Viscosity | 53 @Temperature 100 °C |
53 @Temperature 212 °F |
[MU] ML 1+4; ASTM D1646 |
| Ash | 0.080 % | 0.080 % | ASTM D5667 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Tensile Strength at Break | 22.7 MPa @Treatment Temp. 145 °C, Time 2100 sec |
3290 psi @Treatment Temp. 293 °F, Time 0.583 hour |
Cure; ASTM D412 |
| Elongation at Break | 510 % | 510 % | ASTM D412 |
| 300% Modulus | 0.0132 GPa | 1.91 ksi | ASTM D412 |
| Chemical Properties | Metric | English | Comments |
|---|---|---|---|
| Styrene Content | 40 % | 40 % | Bound; ASTM D5775 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Composition | 0.047 | Organic Acid |
| 0.323 | Total Extractables | |
| Rheometer | 14.6 min | t<sub>c</sub> (90), ASTM D5289 |
| 16.8 dNm | MH, ASTM D5289 | |
| 2.3 dNm | ML, ASTM D5289 | |
| 5.5 min | t<sub>s</sub>2, test temperature 160°C; ASTM D5289 | |
| 8.1 min | t<sub>c</sub> (50), ASTM D5289 |
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