Other

Ivan P Mitin

Valerian Mikhailovich Sobolev

Vladimir Vasilievich Moiseev

Vladimir Vasilievich Kosovtsev

Vasily V Polyakov

Leonid Vasillevich Kovtunenko

Valentin Pavlovich Shatalov

Vyacheslav G Fil

Alexandr G Kharitonov

Vasily F Kozlov

Alexandr A Arest-Yakubovich

Raisa V Basova

Boris A Dolgoplosk

Anna R Gantmakher

Valentin P Shatalov

Stanislav V Efremov

Dmitry K Polyakov

Klavdia A Kulakova

Nadezhda K Kashkina

Jury S Tsybin

Neonila M Semenova

Viktor P Judin

Valery P Kotov

Lidia N Mistjukova

Fedor P Afanasov

Valeria G Shalganova

Ervin M Rivin

Zinaida N Korbanova

Vladimir S Glukhovskoi

Anatoly P Garshin

A process for producing carbo-chain homopolymers, block- and random copolymers of conjugated dienes and vinylaromatic monomers comprising polymerization of dienes, vinyl- or di-vinylaromatic monomers or copolymerization thereof in a medium of a hydrocarbon solvent at a temperature ranging from -30.degree. to +150.degree. C. in the presence of an organolithium catalyst of the formula R(Li).sub.x, wherein R is a hydrocarbon radical or a diene polymer, x is an integer of from 1 to 4, and a modifying additive which is a compound comprising a product of interaction between a phenolamine resin and an alkali metal and having the general formula: ##STR1## wherein n is an integer of from 1 to 10;

Process for producing carbo-chain homo-polymers, block- and random

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

Voronezh, undefined

Ivan P Mitin