Borealis Ag

Borealis Technology Oy

The Japan Steel Works, Ltd.

Borealis A/s

Borealis Holding A/s

Jari Aarila

Markku Vahteri

Peter Niedersüss

Floran Prades

Jarmo Kela

John Jamieson

Annika Smedberg

Carl-Gustaf Ek

Klaus Nyfors

Bill Gustafsson

Shigeki Inoue

Leif Leiden

Willem De Wever

Henrik Andtsjo

Hans-Bertil Martinsson

Mikko Lylykangas

Arja Lehtinen

Aimo Sahila

Takayuki Yamazawa

Jari Hatonen

Markku Asumalahti

Laila Rogestedt

Junichi Iwai

Elina Koski

Eira Johansson

Yutaka Mizutani

Arne Syre

Willem Wever

Bengt Hagstrom

The present invention relates to a film comprising at least one layer which comprises a polymer composition comprising (a) a multimodal polymer of ethylene.

Film layer

The present invention relates to a polymer composition, to the use of the polymer composition in film applications and to a film comprising the polymer composition of the invention.

Polyethylene composition for a film layer

Process and apparatus for recovering polymer from a gas phase reactor having a distribution plate via an outlet vessel comprising at least one apparatus for the breakup of polymeric agglomerates, the apparatus further comprising a feed pipe connecting the gas phase reactor and the outlet vessel a return gas line connecting the gas phase reactor and the outlet vessel, means for varying the flow rate through the return gas line from the outlet vessel to the gas phase reactor, and means for varying the outlet rate of polymer product from the outlet vessel.

Method for recovering polymer and apparatus therefor

A screw extruder having a body forming a chamber of two barrels housing two counter-rotating axis-parallel rotors, a supply port for the material to be mixed in the chamber at one end of the body, a discharge port for discharging the mixed material at the other end of the body, a conveying section with screws for feeding the material from the supply port downstream to a mixing section which comprises at least two mixing zones, each mixing zone having at least one forward-conveying wing and at least one backward-conveying wing downstream of the forward-conveying wing on each rotor characterized in that a throttle valve is provided in the chamber downstream of the mixing section, and downstream of the throttle valve a second conveying section with screws and a second mixing section are provided.

Counter-rotating twin screw extruder

An insulating composition for an electric power cable, and an electric power cable that includes a conductor surrounded by an inner semiconducting layer, an insulating layer, and an outer semiconducting layer, where the insulating layer consists of said insulating composition. The insulating composition is characterized in that the ethylene polymer is a multimodal ethylene copolymer obtained by coordination catalyzed polymerization of ethylene and at least one other alpha-olefin in at least one stage, said multimodal ethylene copolymer having a density of 0.890-0.940 g/cm , a MFR of 0.1-10 g/10 min, a MWD of 3.5-8, a melting temperature of at most 125&deg; C., and a comonomer distribution as measured by TREF, such that the fraction of copolymer eluted at a temperature higher than 90&deg; C. does not exceed 10% by weight, and the multimodal ethylene copolymer includes an ethylene copolymer fraction selected from (a) a low molecular weight ethylene copolymer having a density of 0.900-0.950 g/cm and a MFR of 25-500 g/10 min, and (b) a high molecular weight ethylene copolymer having a density of 0.870-0.940 g/cm and a MFR of 0.01-3 g/10 min.

Insulation composition for an electric power cable

Conventional coating compositions have the disadvantage of being insufficiently coatable and having an unsatisfactory environmental stress cracking resistance. Now a coating composition has been found which has both good coating processability and environmental stress cracking resistance. It comprises a multimodal ethylene polymer, which contains from 80 to 100% by weight of ethylene repeating units and from 0 to 20% by weight of C -C &agr;-olefin repeating units, has a density of between 0.915 g/cm and 0.955 g/cm , and is a blend of at least a first ethylene polymer having a first average molecular weight and a first molecular weight distribution and a second ethylene polymer having a second average molecular weight, which is higher than said first average molecular weight, and a second molecular weight distribution, said blend having a third average molecular weight and a third molecular weight distribution.

Coating composition

Polyolefin-condensation polymer blend

Method for functionalization of polyolefins

Growing community of inventors

Porvoo, Finland

Jari Aarila