LG Chemical BR 1208 Polybutadiene Polymer

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LG Chemical BR 1208 Polybutadiene Polymer
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Description: BR1208 is high cis- 1,4 polybutadiene polymer produced by a solution polymerization process employing a stereospecific catalyst to control microstructure, molecular weight and molecular weight distribution. This grade is stabilized with a non- staining, non- discoloring antioxidant allowing for its physical property persistence during storage and application. BR1208, having very high cis content more than 97%, have a good abrasion resistance, flex- cracking resistance, resilience and low temperature properties. In addition, BR1208 has an excellent building tack, a good roll processability and white color. Application: BR1208 is used in tire tread, carcass compounds, shoe sole, V- belts, conveyor belt coverings, hose and tube covers, solid golf balls and various industrial products. CAS No: 9003-17-2 Information provided by LG Chemical
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Physical Properties	Original Value	Comments

Specific Gravity	0.910 g/cc
Volatiles	0.20 %
Mooney Viscosity	45 @Temperature 100 °C	ML 1+4
Ash	0.050 %

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	16.7 MPa @Treatment Temp. 145 °C, Time 2100 sec	cured; ASTM D412
Elongation at Break	410 % @Treatment Temp. 145 °C, Time 2100 sec	cured; ASTM D412
300% Modulus	110 kg(f)/cm² @Treatment Temp. 145 °C, Time 2100 sec	cured; ASTM D412

Descriptive Properties
cis contents	98%
Color	White
Components	BR1208	100, ASTM D3189
	HAF (IRB#7)	60, ASTM D3189
	Naphthenic Oil	15, ASTM D3189
	Stearic Acid	2, ASTM D3189
	Sulfur	1.5, ASTM D3189
	TBBS	0.9, ASTM D3189
	ZnO	3, ASTM D3189
Extractables	0.003
Rheometer	11.8 min	t'90, 160°C, 1° Arc, ASTM D5289
	2.9 min	ts1, 160°C, 1° Arc, ASTM D5289
	24.5 lb-in	MH, 160°C, 1° Arc, ASTM D5289
	4.0 lb-in	ML, 160°C, 1° Arc, ASTM D5289
	7.8 min	t'50, 160°C, 1° Arc, ASTM D5289

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