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

Participants

Reaction Steps

5000 g of cyclohexane was placed in a 10 l autoclave reactor, followed by the addition of 100 g of tetrahydrofuran, 130 g of styrene monomer, 870 g of butadiene monomer and 10 mmol of n-butyl lithium for one-hour polymerization. Then, 0.9 g of t-butyl chloride was added to the mixing solution to deactivate the terminal of polymer. Thus, a styrene-butadiene random copolymer, so obtained, had the following characteristics: 13% as a combined content of styrene, 57% as a combined 1,2 vinyl content of butadiene unit, and a number average molecular weight of about 100,000.

Provenance & Evidence