Other

Valentin P Shatalov

Valerian Mikhailovich Sobolev

Ivan P Mitin

Vasily V Polyakov

Anna R Gantmakher

Alexandr A Arest-Yakubovich

Ervin M Rivin

Fedor P Afanasov

Anatoly P Garshin

Klavdia A Kulakova

Vyacheslav G Fil

Boris A Dolgoplosk

Dmitry K Polyakov

Jury S Tsybin

Raisa V Basova

Alexandr G Kharitonov

Stanislav V Efremov

Vladimir S Glukhovskoi

Valery P Kotov

Vasily F Kozlov

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

Valentin P Shatalov