Abstract: The invention produces suspensions of higher ?-olefins without using cryogenic comminution as well as without using polymer precipitation by adding a non-solvent to a polymer solution. Fine polymer dispersions are produced by thermal re-precipitation of a polymer in a liquid being a non-solvent for that polymer at room temperature and being capable of dissolving the polymer at a higher temperature. The polymer component of a suspension is produced by co-polymerization of higher ?-olefins in a monomer mass in the presence of a Ziegler-Natta catalyst.
Type:
Grant
Filed:
September 28, 2012
Date of Patent:
July 7, 2015
Assignees:
OIL TRANSPORTING JOINT STOCK COMPANY “TRANSNEFT”, LIMITED LIABILITY COMPANY <<TRANSNEFT RESEARCH AND DEVELOPMENT INSTITUTE FOR OIL AND OIL PRODUCTS TRANSPORTATION>>
Inventors:
Georgy Viktorovich Nesyn, Andrey Mikhailovich Shiryaev, Marat Iozefovich Valiev, Aleksandr Nikolaevich Chentsov, Vladimir Ivanovich Fedota, Yuriy Viktorovich Lisin