Water → Benzene, ethenyl-, polymer with 1,3-butadiene

Participants

Reaction Steps

To a 2-gallon reactor equipped with turbine agitator blades was added 1597 g of hexane, 399 g of 34.0 wt % styrene in hexane, and 2440 g of 22.3 wt % 1,3-butadiene in hexane. To the reactor was charged 2.58 mL of 1.6 M n-butyllithium in hexane and 0.85 mL of 1.6 M 2,2-bis(2′-tetrahydrofuryl)propane in hexane. The batch was heated by applying hot water to the reactor jacket. Once the batch temperature reached 55° C., the reactor jacket was cooled with cold water. Two hours after the addition of the catalyst, the polymer cement was removed from the reactor and coagulated with 3 gallons of isopropanol containing 7 g of 2,6-di-tert-butyl-4-methylphenol, and then drum-dried. The properties of the resulting unmodified SBR are summarized in Table 4.

Provenance & Evidence