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SYNTHOS Kralex® 1501 Styrene Butadiene Rubber

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE)
Manufacturer SYNTHOS Kralupy a.s.
Trade Name Kralex®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF SYNTHOS Kralex® 1501 Styrene Butadiene Rubber.pdf
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Material Notes:
KRALEX® 1501 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 a non-staining antioxidant.KRALEX® 1501 is appropriate for rubber compounds used in the production of floor coverings, bicycle tires, footwear, children toys, cables, hosepipes and various rubber articles having dark color shades.It is approved for the production of rubber articles coming into contact with foods. The producer of these articles, however, is responsible for any decision about the suitability of the final product for predicted usage and for the compliance with specific requirements for individual cases.Synthos was formerly known as Kaucuk. All information provided by Synthos.
Physical Properties Metric English Comments
Volatiles <= 0.75 %
<= 0.75 %
ASTM D5668
Mooney Viscosity 44 - 54

@Temperature 100 °C
44 - 54

@Temperature 212 °F
(1+4); ASTM D1646
Ash <= 0.40 %
<= 0.40 %
ASTM D5667
Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 23.0 MPa
3340 psi
35'/145°C; ASTM D412
Elongation at Break 410 %
410 %
35'/145°C; ASTM D412
300% Modulus 0.0120 - 0.0180 GPa
1.74 - 2.61 ksi
35'/145°C; ASTM D412
Chemical Properties Metric English Comments
Acid Value 5.0 - 7.5
5.0 - 7.5
ASTM D5774
Styrene Content 23.5 %
23.5 %
ASTM D5775
Descriptive Properties Value Comments
50% of Vulcanization t' 50 (min.) 7-11
ASTM D5289
Antioxidant Grade Non-Staining
Compound Safety ts 1 (min.) 2.2-4
ASTM D5289
Maximal Moment (dNm) 18.5-21
ASTM D5289
Minimal Moment (dNm) 2.1-2.6
ASTM D5289
Optimal Vulcanization t' 90 (min.) 14-19
ASTM D5289
Soaps content (%) <= 0.3
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