CENWAY BI IR-2301

Composition
Copolymer rubber of brominated Isobutylene-Isoprene, low mooney viscosity, fast cure rate grade.

Basic Properties

Properties	Unit	Index	Test Method
Product Form		Off-white	Visual
Mooney Viscosity (ML1+8,125℃)	MU	32±5	ISO 289/ASTM D1646
Volatile Matter	wt%	≤0.7	ISO 248/ASTM D5668
Bromine Content	wt%	2.1±0.2	CENWAY METHOD
Total Ash	wt%	≤0.7	ISO 247/ASTM D5667
Antioxidant (non-staining)	wt%	≥0.02	CENWAY METHOD
Stabilizer	wt%	1.3±0.3	CENWAY METHOD

Cure Characteristics

Properties	Unit	Index	Test Method
FL	dN•m	2.5±0.9	ISO 6502/ASTM  D5289
FH	dN•m	7.4±1.4	ISO 6502/ASTM  D5289
ts1	min	2.4±1.5	Rotorless cur (MDR)
tc50	min	4.3±1.8	160℃X40min,0.5°arc
tc90	min	6.6±2.8	160℃X40min,0.5°arc
Test Formulation	ISO 7663/ASTM D 3958 BI IR2301 100, IRB#7  40, Zn0 5, St.A 1

Applications
Bromobutyl Rubber BI IR 2301 has superior air impermeability, outstanding performance of heat-resistance, chemical corrosion-resistance, thermal aging resistance, and good curing performance. It is especially used for medical stoppers, and other applications as corrosion-resistance lining, protective clothing, shoes production and TPV industry.

Safety & Toxicity
BI IR 2301 is polymer in solid with stable performance. It is harmless and not dangerous for humans, plants and animals. For relevant safety data and reference, please refer to MSDS.

Packaging
25 ± 0.5 kg/bale in EVA film.
Pallets of plywood box of 1050 kg with 42 bales.
Pallets of metal box of 1200 kg with 48 bales.

Storage Life & Conditions
Two years with keeping storage & transport under 35℃ and against sunlight.