Patent · US Active

Solid single site catalysts with high polymerisation activity

US9670293B2 · kind B2 · utility

21Cited by

45References

12Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Alexander Reznichenko · Porvoo, FI
Noureddine Ajellal · Helsinki, FI
Pascal Castro · Helsinki, FI
Irfan Saeed · Porvoo, FI

Key dates

Filing date	Oct 22, 2014
Grant date	Jun 6, 2017
Priority date	—
Expiry date	Oct 22, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2410/01
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Process for the preparation of a solid catalyst system comprising the steps of preparing a liquid clathrate comprising a mixing of an aluminoxane, an aromatic compound and an organo-silicon compound, wherein the mol-ratio between the organo-silicon compound and aluminum of the aluminoxane is below 0.1, mixing said liquid clathrate with an organometallic compound obtaining a liquid mixture, and precipitating the solid catalyst system out of said liquid mixture by adding a saturated aliphatic compound to said mixture liquid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.