The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2012
Filed:
Jun. 13, 2007
Marja Tiitta, Porvoo, FI;
Anna-mari Illikainen, Porvoo, FI;
Kari Kulmala, Porvoo, FI;
Vesa-matti Lehtinen, Porvoo, FI;
Fredrik Nissfolk, Porvoo, FI;
Marja Tiitta, Porvoo, FI;
Anna-Mari Illikainen, Porvoo, FI;
Kari Kulmala, Porvoo, FI;
Vesa-Matti Lehtinen, Porvoo, FI;
Fredrik Nissfolk, Porvoo, FI;
Neste Oil Oyj, Espoo, FI;
Abstract
The present invention relates to a process for producing polyolefins wherein a feedstock comprising n-olefin or a mixture of n-olefins is dimerized in the presence of a solid acidic catalyst by passing the feedstock to a catalytic distillation apparatus comprising either a) a combination of a distillation column and a reactor comprising at least one catalyst bed, or b) a distillation column connected to one or more side reactors comprising at least one catalyst layer, recovering the unreacted n-olefin from the distillation column or the combination of the distillation column and the reactor at the upper part thereof as a side-stream to be combined with the feedstock, and the reaction product from the dimerization is hydrogenated.