Catalytic oligomerization of octenes

摘要

In accordance with the present disclosure there is provided a process for preparing a hydrogenated olefin polymer by hydrogenation of a polyoctene; said polyoctene being prepared by reacting a C8-olefin feed comprising an isomeric mixture of an alpha-olefin and a non-alpha olefin monomer in a controlled manner with the help of an ionic catalyst, while controlling at least one condition of the reaction selected from the group of condition consisting of exotherm, contact time of the olefin feed with ionic catalyst and molar ratio of the ionic catalyst to the olefin feed within predetermined ranges to obtain an oligomerized mixture comprising at least one polyoctene and unreacted ionic catalyst.

主权项

1. A process for preparing a hydrogenated olefin polymer of Formula (I);
(C8H16)nH2  Formula (I) wherein, n=2 to 40; said process comprising the following steps;
i. reacting a C8-olefin feed comprising an isomeric mixture of a C8-alpha-olefin and a C8-non-alpha olefin monomer in a controlled manner in the presence of an ionic catalyst, while controlling at least one condition of the reaction selected from the group of conditions consisting of exotherm, contact time of the olefin feed with the ionic catalyst and molar ratio of the ionic catalyst to the olefin feed within predetermined ranges to obtain an oligomerized mixture comprising at least one polyoctene and unreacted ionic catalyst; ii. separating the polyoctene from the oligomerized mixture to obtain a separated polyoctene; iii. purifying the separated polyoctene using an ammonium salt to obtain a purified polyoctene; and iv. hydrogenating the purified polyoctene in the presence of a hydrogenation catalyst to obtain a hydrogenated olefin polymer of Formula (I).