Process for polymerization of polypropylene using ziegler-natta procatalyst with novel 1,3-diether internal donors

US12378332B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Martin Alexander Zuideveld · Kelmis, BE
• Anika Meppelder · Aachen, DE
• Dafne Lise Steinfort · Sittard, NL
• Kiran Puthamane · Jamkhed, IN
• Mudubagilu Udaya Kumar · Salumbar, IN

Key dates

• Filing date: Sep 29, 2020
• Grant date: Aug 5, 2025
• Expiry date: Aug 25, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing a procatalyst for polymerization of olefins, comprising contacting a magnesium-containing support with a halogen-containing titanium compound, and an internal electron donor according to Formula (I), said process comprising the steps of: i) contacting a compound R4zMgX42-z with an alkoxy- or aryloxy-containing silane compound to give a first intermediate reaction product, being a solid Mg(OR1)xX12-x, ii) optionally contacting the solid Mg(OR1)xX1 2-x obtained in step ii) with at least one activating compound selected from the group formed by activating electron donors and metal alkoxide compounds of formula M1(OR2)v-w(OR3)w or M2(OR2)v-w(R3)w, to obtain a second intermediate product; iii) contacting the first or second intermediate reaction product, obtained respectively in step i) or ii), with a halogen-containing Ti-compound and said compound represented Formula (I), as the internal electron donor.