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Dive into the research topics where Arild Follestad is active.

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Featured researches published by Arild Follestad.


Studies in Surface Science and Catalysis | 1990

6. Kinetic Profile of Polymerization with Cr-Oxide/SiO2 Catalyst

Arild Follestad; Stein Helleborg; Vidar Almquist

Polymerization with Cr-oxide/SiO2 catalyst gives initially low activity, then a gradual increase in activity. Several factors are discussed that might be responsible for the long time to reach full activity: Chemical, transport restrictions, catalyst fracturing. A locking and unlocking of Cr-C bond cycle is proposed. A concequence of this theory is that as soon as the pores in the catalyst have been filled with polymer, polymerization must virtually stop. Slowly, however, pressure in the pores build up and fractures the catalyst, making an increase in polymerization rate possible.


Archive | 2001

Process for producing propylene based polymer compositions

Espen Ommundsen; Arild Follestad; Mika Harkonen; Merja Poikela; Pirjo Jaaskelainen; Kauno Alastalo


Archive | 2000

Improvements in or relating to polymers

Arild Follestad; Espen Ommundsen


Archive | 2002

Polyolefin composition for rotomolding

Arild Follestad; Espen Ommundsen; Knut Fosse


Archive | 1999

Polyethylenes obtained by use of dual site catalyst

Arild Follestad; Vidar Almquist; Espen Ommundsen; Tore Dreng


Archive | 1999

A catalyst for the (co)polymerisation of ethylene and a method for the preparation thereof

Arild Follestad; Vidar Almquist; Ulf Palmqvist; Harri Hokkanen


Archive | 2001

Polyethylene compositions for rotomolding

Arild Follestad; Knut Fosse; Espen Ommundsen


Archive | 2013

Multimodal polyethylene polymers and process preparing said polymer

Irene Helland; Tore Dreng; Arild Follestad


Archive | 2005

Process for the preparation of bimodal polyethylene

Arild Follestad; Erling Rytter; Richard Blom; Espen Ommundsen


Archive | 2013

Polymères polyéthylène multimodaux et procédé de préparation desdits polymères

Irene Helland; Tore Dreng; Arild Follestad

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Erling Rytter

Norwegian Institute of Technology

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