SYNTHOS Kralex® 1500 Styrene Butadiene Rubber

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SYNTHOS Kralex® 1500 Styrene Butadiene Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	KRALEX® 1500 is a standard grade of styrene butadiene rubber. It is produced by a technology of cold emulsion polymerization based on soaps of rosin acids and contains 23.5% of chemically bonded styrene. It is coagulated by a system of acid and organic coagulant, does not contain extender oil and is stabilized by staining antioxidant. KRALEX® 1500 is appropriate for rubber compounds used in the production of car tires and inner tubes, conveyor belts, footwear, cables, hosepipes and various technical rubber articles. It is not approved for production of rubber articles coming into contact with foods or drinking water. Synthos was formerly known as Kaucuk. Synthos was formerly known as Kaucuk. All information provided by Synthos.
Key Words:	SBR
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Physical Properties	Original Value	Comments

Volatiles	<= 0.75 %	ASTM D5668
Mooney Viscosity	44 - 54 @Temperature 100 °C	(1+4); ASTM D1646
Ash	<= 0.40 %	ASTM D5667

Chemical Properties	Original Value	Comments
Acid Value	5.0 - 7.5	ASTM D5774
Styrene Content	23.5 %	ASTM D5775

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	23.0 MPa	35'/145°C; ASTM D412
Elongation at Break	400 %	35'/145°C; ASTM D412
300% Modulus	0.0130 - 0.0190 GPa @Strain 300 %	35'/145°C; ASTM D412

Descriptive Properties
50% of Vulcanization t' 50 (min.)	6.5-10.5	ASTM D5289
Antioxidant Grade	Staining
Compound Safety ts 1 (min.)	2.2-4.0	ASTM D5289
Maximal Moment (dNm)	19-22	ASTM D5289
Minimal Moment (dNm)	2.1-2.8	ASTM D5289
Optimal Vulcanization t' 90 (min.)	12-17	ASTM D5289
Soaps content (%)	<= 0.3

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PSYNT001 / 82614

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