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Dow SE BR-1203H Stereospecific high cis-1,4 Polybutadiene (BR)

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE)
Manufacturer Dow Chemical
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Dow SE BR-1203H Stereospecific high cis-1,4 Polybutadiene (BR).pdf
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Material Notes:
SE BR-1203H is manufactured by a solution process using cobalt catalyst which produces polymers with a very light color and low ash content. A non-staining stabilizer is added during the production process. BR-1203H is suitable for tires, conveyor belting, footwear and mechanical goods. It offers a unique property combination of good abrasion resistance, particularly at high severity, excellent groove crack resistance and good heat aging. Other features include high resilience, low hysteresis, good set properties and a low glass transition point which results in better low temperature performance. BR-1203H is able to accept high filler and oil loadings without significant loss of properties. It may be blended with natural rubber and styrene butadiene (SBR), isoprene (IR), nitrile (NBR), or polychloroprene (CR) synthetic rubbers. BR-1203H is supplied in bales weighing ca. 34 kg. Bales are wrapped in 50 micron PE or EVA film.Information provided by Dow
Physical Properties Metric English Comments
Viscosity Measurement 6.4

@Temperature 160 °C
6.4

@Temperature 320 °F
[min]; ts1, (1 RAD); ASTM D2084
10

@Temperature 160 °C
10

@Temperature 320 °F
[min]; T50, (1 RAD); ASTM D2084
10.8

@Temperature 160 °C
10.8

@Temperature 320 °F
[dNm]; ML, (1 RAD); ASTM D2084
13.1

@Temperature 160 °C
13.1

@Temperature 320 °F
[min]; T90, (1 RAD); ASTM D2084
42

@Temperature 160 °C
42

@Temperature 320 °F
[dNm]; MH, (1 RAD); ASTM D2084
Mooney Viscosity 48

@Temperature 100 °C
48

@Temperature 212 °F
[MU]; ML 1+4; ASTM D1646
Ash 0.030 %
0.030 %
ASTM D1416
Collected Volatile Condensable Material 0.20 %
0.20 %
ASTM D1416
Storage Temperature <= 30.0 °C
<= 86.0 °F
Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 16.8 MPa
2440 psi
Die C (35 min / 145°C); ASTM D412
Tensile Strength, Yield 9.30 MPa

@Strain 300 %
1350 psi

@Strain 300 %
ASTM D412
Elongation at Break 490 %
490 %
ASTM D412
Processing Properties Metric English Comments
Shelf Life >= 12.0 Month
>= 12.0 Month
Descriptive Properties Value Comments
Accelerator (TBBS) wt% 0.9
ASTM D3189
Carbon Black wt% 60
ASTM D3189; IRB 6
Cis-1,4 Content % 97
Supplier Method (NMR)
Dry Gel Content mg/kg 200
Supplier Method
Naphthenic oil type 103 wt% 15
ASTM D226
Stearic Acid wt% 2
ASTM D3189
Sulfur content, % 1.5
ASTM D3189
Zinc Oxide wt% 3
ASTM D3189
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