LG Chemical BR 1280 Polybutadiene Polymer

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LG Chemical BR 1280 Polybutadiene Polymer
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	BR 1280 is high cis- 1,4 polybutadiene polymer produced by a solution polymerization process 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. BR 1280, having very high cis content, have a good abrasion resistance, flex cracking resilience and low temperature properties. Especially, BR 1280 has very good storage stability because BR 1280 has very low cold flow property than BR 1280. And it is excellent for dispersion of filler, shorter mixing cycle, resistance,improved milling and extrusion, lower power requirements for processing. Application: BR 1280 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	0.30 %
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	450 % @Treatment Temp. 145 °C, Time 2100 sec	cured; ASTM D412
300% Modulus	100 kg(f)/cm² @Treatment Temp. 145 °C, Time 2100 sec	cured; ASTM D412

Descriptive Properties
cis contents	96%
Color	Light Yellow
Components	BR1280	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	0.011
Rheometer	11.6 min	t'90, 160°C, 1° Arc, ASTM D5289
	20.5 lb-in	MH, 160°C, 1° Arc, ASTM D5289
	3.0 min	ts1, 160°C, 1° Arc, ASTM D5289
	3.6 lb-in	ML, 160°C, 1° Arc, ASTM D5289
	7.9 min	t'50, 160°C, 1° Arc, ASTM D5289

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