Patents Assigned to Open Joint Stock Company "SIBUR Holding"
  • Publication number: 20140249276
    Abstract: The invention relates to the field of producing synthetic rubbers, in particular diene (co)polymers, such as polybutadiene, polyisoprene and styrene-butadiene rubber (SBR), which can be used in the production of tyres and industrial rubber articles, in the modification of bitumens, in electrical engineering and in other fields. The method consists of a polymerization process or a copolymerization process which is carried out in two parallel reactors, and each of dienes are polymerized or copolymerized with each other and/or with arylvinyl compounds, wherein an organolithium initiator, an electron donor additive and a branching agent are fed into the first reactor, and an organo lithium initiator, an electron donor additive and a functionalizing agent are fed into the second reactor, and the resultant polymerized mixtures are subsequently mixed with each other.
    Type: Application
    Filed: October 3, 2012
    Publication date: September 4, 2014
    Inventors: Anna Viktorovna Budeeva, Artur Igorevich Rakhmatullin, Alexander Viktorovich Rogalev, Viktor Ivanovich Aksenov
  • Publication number: 20140121435
    Abstract: The invention relates to the production of olefin oligomers by a method of oligomerization of olefins, and, in particular, to a method of isolating olefin oligomerization products and decomposing the oligomerization catalyst residues. The method of isolating products of an oligomerization reaction of olefins including a terminal double bond, in which the reaction is carried out by the action of a catalyst having chromium compounds, a nitrogen-containing ligand and organoaluminum compounds, includes a step of isolating independent olefin products and a step of treating catalyst residues. Further, the method includes the following sequential steps: a) isolating at least one liquid product of the oligomerization reaction of olefins from an output stream of an oligomerization reactor; b) treating a residue with an aqueous solution of an acid; and c) separating an organic layer and an aqueous layer.
    Type: Application
    Filed: June 21, 2012
    Publication date: May 1, 2014
    Applicant: Open Joint Stock Company "SIBUR Holding"
    Inventors: Timur Mikhailovich Zilbershtein, Maxim Vladimirovich Lipskikh, Vladislav Alexandrovich Kardash, Vladlena Vladimirovna Suvorova