Dow SE SLR-4630 Solution polymerized Styrene Butadiene Rubber (S-SBR)

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Dow SE SLR-4630 Solution polymerized Styrene Butadiene Rubber (S-SBR)
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	SE SLR-4630 is manufactured by anionic solution polymerization using lithium initiator and is extended with 37.5 parts of TDAE oil in relation to solid rubber. It is a product with medium styrene and high vinyl content. The product is partially Sn-coupled and non-staining stabilized. SE SLR-4630 is used in the tire industry for the manufacture of winter and all season applications. It can also be used for the manufacture of high-quality technical rubber articles. It is supplied in bales weighing 25 kg. Bales are wrapped in 50 micron PE film. At mixing temperatures above 110°C, the rubber can be processed with the packaging film. Information provided by Dow
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Physical Properties	Original Value	Comments

Viscosity Measurement	2.8 @Temperature 160 °C	[dNm]; ML, (0.5 RAD); ASTM D5289
	4.4 @Temperature 160 °C	[min]; ts1, (0.5 RAD); ASTM D5289
	10.9 @Temperature 160 °C	[min]; T50, (0.5 RAD); ASTM D5289
	14.3 @Temperature 160 °C	[dNm]; MH, (0.5 RAD); ASTM D5289
	17.9 @Temperature 160 °C	[min]; T90, (0.5 RAD); ASTM D5289
Mooney Viscosity	55 @Temperature 100 °C	[MU]; ML 1+4, unmassed sample; ASTM D1646
Vinyl Acetate Content	63 %	FTIR, internal method
Collected Volatile Condensable Material	0.32 %	ASTM D5668
Storage Temperature	<= 30.0 °C

Chemical Properties	Original Value	Comments
Styrene Content	25 %	FTIR, internal method

Mechanical Properties	Original Value	Comments
Hardness, Shore A	56.7 @Thickness 12.5 mm	(25 min / 160°C); ASTM D2240
Tensile Strength, Ultimate	20.0 MPa	Die C (35 min / 145°C); ASTM D412
Tensile Stress at Strain	10.5 MPa @Strain 300 %	ASTM D412
Elongation at Break	540 %	ASTM D412
Rebound	19 % @Thickness 12.5 mm	Schob pendulum, (25 min / 160°C); ISO 4662

Thermal Properties	Original Value	Comments
Vicat Softening Point	198 °F
Glass Transition Temp, Tg	-20.0 °F	HR 10 K/min; half height; DSC

Processing Properties	Original Value	Comments
Shelf Life	>= 12.0 Month

Descriptive Properties
Accelerator (TBBS) wt%	1.38	ASTM 3185-2B
Carbon Black wt%	68.75	ASTM 3185-2B; IRB 7
Stearic Acid wt%	1	ASTM 3185-2B
Sulfur content, %	1.75	ASTM 3185-2B
Total Extractables %	27.4	ASTM D5774
Zinc Oxide wt%	3	ASTM 3185-2B

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PDOW1105 / 30309

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