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Low molecular weight polybutadiene hydroxylated EFRODIENE DIOL

Specification
Properties	Value for grades
Properties	Efrodiene Diol-48	Efrodiene Diol-56	Efrodiene Diol-73
Content of hydroxyl groups, mmol KOH/g (mg KOH/g)	0.44…0.53 (25…30)	0.49…0.64 (27…36)	0.71…0.75 (40…42)
Dynamic viscosity at 40°C, Pa·s	≤ 9.5	≤ 8.5	≤ 3.5
Number average molecular weight, Mn (GPC)	3800…4600	3300…4100	2700…3300
Water content, wt. %	≤ 0.5
Content of peroxide compounds (as H₂O₂) (m/m), %	≤ 0.04	≤ 0.04	≤ 0.05
Mass fraction of antioxidant Irganox 1010 (or it's analogue), %	0.1-0.4

Description

EFRODIENE DIOL rubber is a low molecular weight liquid polybutadiene containing two functional hydroxyl groups per polymer macromolecule and at least 20% 1,2-vinyl units.

Areas of use

Due to the high content of double bonds and low molecular weight, it retains mobility at low ambient temperatures. The product does not mix with water and alcohols; it is soluble in non-polar organic solvents, oils, and bitumen. It exhibits reactivity both with respect to double bonds contained in the main polymer chain and with hydroxyl groups. It is widely used as a hydroxyl-containing component of polyurethane systems. Used in the production of adhesives, polyurethane coatings, sealants, thermoplastics, injection molded urethane elastomers, as a coupling agent for elastomers, to increase the hydrolytic stability of polyurethanes.

Packaging and transportation

EFRODIENE DIOL rubber is packaged in steel barrels with a capacity of 100 to 275 dm³, IBC and tank trucks. The product can be transported by any type of transport.

Warranty period

Three years from date of manufacture.

Worldwide analogues:

Evonik Polyvest HT (Germany), Tanyun Chemical Research Institute Co.,Ltd HTPB (China), Cray Valley Poly bd R45 HTLO (USA), Krasol LBH (Czech Republic).