Trinseo BUNA™ SB 1723 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR)

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Trinseo BUNA™ SB 1723 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR)
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Styrene Butadiene Rubber
Material Notes:	BUNA™ SB 1723–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 tires within the EU. A discoloring stabilizer is added during the production process. Application: BUNA™ SB 1723–Schkopau is a general purpose rubber. It can be processed in all sectors of the tire and rubber industry. Information provided by Trinseo.
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Physical Properties	Metric	English	Comments

Density	0.930 g/cc	0.0336 lb/in³
Volatiles	0.30 %	0.30 %	1 hr at 105°C in a hot air oven, 5 g sample; ASTM D5668
Mooney Viscosity	49.2 @Temperature 100 °C	49.2 @Temperature 212 °F	MU, ML 1+4; ASTM D1646
Ash	0.040 %	0.040 %	ASTM D5667

Chemical Properties	Metric	English	Comments
Styrene Content	23.5 %	23.5 %	Bound; ASTM D5775

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	21.5 MPa	3120 psi	Cure: 45 min at 145°C; ASTM D412
Elongation at Break	420 %	420 %	ASTM D412
300% Modulus	14.0 MPa @Strain 300 %	2030 psi @Strain 300 %	ASTM D412

Descriptive Properties
Organic acid	4.5 percent		ASTM D5774
Rheometer	13.9 min		tc(90), ASTM D5289
	16.0 dNm		MH, ASTM D5289
	2.4 dNm		ML, ASTM D5289
	5.0 min		ts2, 160°C, ASTM D5289
	7.8 min		tc(50), ASTM D5289
Test Formulation	1 Part		Stearic acid, ASTM D3185-1A
	1 Part		Accelerator (TBBS), ASTM D3185-1A
	1.75 Parts		Sulfur, ASTM D3185-1A
	100 Parts		Polymer, ASTM D3185-1A
	3 Parts		Zinc oxide, ASTM D3185-1A
	50 Parts		Carbon black IRB8, ASTM D3185-1A

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PDWST239 / 142448

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