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SYNTHOS Kralex® 1507 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® 1507 Styrene Butadiene Rubber.pdf
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Material Notes:
KRALEX® 1507 is a standard grade of styrene butadiene rubber. It is produced by a technology of cold emulsion polymerization based on soaps of rosin and fatty 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® 1507 is appropriate for rubber compounds used in the production of floor coverings, bicycle tires, footwear, children toys and various rubber articles having light color shades.KRALEX® 1507 does not contain any components excluding usage of KRALEX® 1507 for production of articles coming into contact with foodstuffs.Producer of KRALEX® 1507 is not responsible for hygienic parameters of the final vulcanizate.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 34 - 42

@Temperature 100 °C
34 - 42

@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 380 %
380 %
35'/145°C; ASTM D412
300% Modulus 0.0140 - 0.0200 GPa
2.03 - 2.90 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.) 5.5-9.5
ASTM D5289
Antioxidant Grade Non-Staining
Compound Safety ts 1 (min.) 2-3.8
ASTM D5289
Maximal Moment (dNm) 18.5-21.5
ASTM D5289
Minimal Moment (dNm) 2.0-2.5
ASTM D5289
Optimal Vulcanization t' 90 (min.) 12-17
ASTM D5289
Soaps content (%) <= 0.3
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