Styrene-butadiene copolymers with high styrene content

Details Styrene-butadiene copolymers with high styrene content Styrene-butadiene copolymers with high styrene content

1984-07-19

1985-05-28

Lipman, Bernard

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152330R, 5253329, 5253591, 525371, B60C 1100

Patent

active

045194319

ABSTRACT:
A styrene-butadiene copolymer having a high styrene content is disclosed, which is obtained by polymerizing styrene and butadiene in a hydrocarbon solvent in the presence of an organolithium compound and, if necessary, a Lewis base and then coupling with a tin halide compound. This copolymer contains in its main chain at least 30 wt % of polymer having a tin-carbon bond and has a bound styrene content of more than 25 wt % but not more than 60 wt % and a content of vinyl bond in butadiene portion of not less than 30% but less than 50%.

REFERENCES:
patent: 3956232 (1976-05-01), Uraneck et al.
patent: 4309318 (1982-01-01), Ahagon et al.
patent: 4334567 (1982-06-01), Bond

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