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Alexandr A Arest-Yakubovich

Valerian Mikhailovich Sobolev

Vasily V Polyakov

Ivan P Mitin

Anna R Gantmakher

Dmitry K Polyakov

Jury S Tsybin

Fedor P Afanasov

Ervin M Rivin

Alexandr G Kharitonov

Anatoly P Garshin

Klavdia A Kulakova

Vyacheslav G Fil

Vasily F Kozlov

Valery P Kotov

Raisa V Basova

Valentin P Shatalov

Vladimir S Glukhovskoi

Boris A Dolgoplosk

Stanislav V Efremov

A process for producing high-impact polystyrene which comprises polymerization of styrene in the presence of a reinforcing agent, i.e. a conjugated diolefin polymer, random copolymer, graft-copolymer or block-copolymer of a conjugated diolefin with styrene or a mixture of said copolymers and an anionic catalyst based on organic derivatives of alkali metals or adducts thereof in a medium of inert hydrocarbon solvents such as aliphatic, cycloaliphatic and aromatic solvents or mixtures thereof. On completion of polymerization the resulting polymer is subjected to cross-linking by means of peroxide compounds or redox systems, followed by isolation of the desired product. The process for producing high-impact polystyrene according to the present invention makes it possible to shorten the technological cycle due to increased polymerization rate, to facilitate production technology, and to manufacture polystyrene with improved properties.

Process for producing-impact polystyrene

Growing community of inventors

Moscow, Russia

Alexandr A Arest-Yakubovich