Caoutchouc sbr 1502

BUNATM SB 1502 - Schkopau
Cold Polymerised Emulsion Styrene Butadiene Rubber (E-SBR)


Composition
BUNATM SB 1502 - Schkopau is manufactured by cold polymerisation using mixed rosin acid
/ fatty acid soaps. A non-discolouring stabiliser is added during the production process.

Application
BUNATM SB 1502 - Schkopau is a general purpose rubber. It can be processed in all sectors of the tyre and rubber industry. BUNATM SB 1502 - Schkopau is mainly used for the production of light-coloured rubber articles which can also be applied in the food industry .

Packaging
• BUNATM SB 1502 - Schkopau is supplied in bales of 25 kg nominal weight.
• Bales are wrapped in 50 micron polyethylene film (Vicat softening temperature: 92 °C).
• One box contains forty bales (nominal 1000 kg)

Specification sheet
Raw material specification sheets are available from Styron or your local supplier on request.
Handling precautions • BUNATM SB 1502 - Schkopau has to be kept away from sources of ignition.
• Reference must be made to the Safety Data Sheet for this product.
• The precautions advised in the Safety Data Sheet should be strictly observed.

Storage
BUNATM SB 1502 - Schkopau should be stored in an adequately ventilated area where it will not be subjected to direct sunlight or temperatures in excess of 30°C. Under these conditions BUNATM SB 1502 - Schkopau has a shelf life of at least 12 months.



Characteristic Properties of BUNATM SB 1502 - Schkopau
Chemical and Physical Data

Property Test method Unit Value
Mooney viscosity(1) ASTM D 1646 MU 50.0
Bound Styrene ASTM D 5775 % 23.5
Organic Acid ASTM D 5774 % 5.8
Volatile Matter ASTM D 5668(2) % 0.3
Ash ASTM D 5667 % 0.05
Specific gravity SM(3) g/cm3 0.93

Test Formulation (ASTM D 3189 based on IRB7 black)

Parts by Mass
Polymer 100.0
IRB7 industry reference oil furnace carbon black 50.0
Zinc oxide 3.0
Sulphur 1.75
Stearic acid 1.0
N-tert-butyl-2-benzothiazole sulphenamide (TBBS) 1.0


Rheometera) b)

Property Test method Unit Value
ts2 ASTM D5289(4) min 5.6
tc(50) ASTM D5289 min 9.2
tc(90) ASTM D5289