Styrene Butadiene Rubber (Sbr 1712)

We are making, supplying and exporting of Styrene Butadiene Rubber (SBR 1712) in Sofia, Oblast Sofiya-Grad, Bulgaria to our consumer with the following details:
Mooney Viscosity (1) ML 100A C : 35 a 60
Oil Content (acetone extraction), wt.% : 15 - 30
Antioxidant Staining
Ash Content (1h, 550A C), wt.% : 2,5 max.
Moisture Content (105A C, 10 mins.), wt.% : 1,5 max.
Density, g/cmA 0,95
Color Dark
Standard 34 kg bales, wrapped Packaging in dispersible PE-film. 30 bales stacked in one crate.
Typical Inspections UMAC a SBR 1712
GRADE Repro SBR 1712
Cure Characteristics (2)(3)
Max. Torque (MH)
dN.m 34
0 a 45

Min. Torque (ML)
dN.m 5
0 a 12

Scorch Time (ts1)
mins. 2
0 a 5

50 % Cure Time (ta 50)
mins. 6
0 a 10

90 % Cure Time (ta 90)
mins. 9
0 a 16

Physical Properties (3)(4)
Tensile Strength, MPa 13,0 a 25,0
Modulus 300 %, MPa 11,0 a 17,0
Ultimate Elongation, % 280 a 500
Hardness, Shore A 67 a 73
(1) Mooney Viscosity Testing in accordance with ASTM D1646, MV2000, unmassed sample.
(2) Rheometer Testing in accordance with ASTM D2084; Temperature 160A C, Frequency 100 cpm,
30 mins. test, 1 A Arc.
(3) Characteristics determined on a standard compound of the following formulation; in accordance with ASTM D3185: UMAC a SBR 1712 130