Patent · US Active

Process for producing polypropylene

US10626199B2 · kind B2 · utility

0Cited by

2References

15Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Pauli Leskinen · Porvoo, FI
Johanna Lilja · Porvoo, FI
Jingbo Wang · Linz, AT
Markus Gahleitner · Ansfelden, AT
Thomas Horill · Deutsch-Wagram, AT
Peter Denifl · Gries am Brenner, AT
Cornelia Tranninger · Linz, AT

Key dates

Filing date	Dec 21, 2015
Grant date	Apr 21, 2020
Priority date	—
Expiry date	Dec 21, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2500/15
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Propylene is polymerised in the presence of a polymerisation catalyst comprising a solid catalyst component, an organoaluminium compound and an external electron donor, the process comprising the steps of (i) contacting propylene and hydrogen with the polymerisation catalyst in polymerisation conditions in a polymerisation reactor to produce a polymer of propylene; (ii) recovering the polymer of propylene from the polymerisation reactor; wherein the polymer of propylene has MFR of from more than 100 to 10000 g/10 min. The solid catalyst component comprises titanium, magnesium, halogen and an internal electron donor, characterised in that the internal electron donor is a compound according to formula (I):

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