Catalysts and process for olefins and polar vinyl monomers copolymerization and olefins homopolymerization
AssigneeUniversita' Degli Studi Di Trieste
InventorsBarbara MILANI, Anna DALL'ANESE, Cyril GODARD, Myriam Yasmine SOULEYMANOU
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Abstract
The invention relates to a family of Pd(II)-based catalysts of general formula (I) reproduced below for use in the production of olefin/polar vinyl monomer copolymers and olefin homopolymers. The invention also refers to ligands that are intermediates in the synthesis of the catalysts, to the process for the synthesis of homo- and copolymers using these catalysts, and to the homo- and copolymers thus obtained.
Claims12
1-13. (canceled)
A compound of formula (II) below, intermediate in the preparation of a palladium-based catalyst:
- wherein R1 is selected between hydrogen and methyl, R2 is selected between methyl and isopropyl and n is an integer from 1 to 4.
A palladium-based catalyst for the preparation of olefin/polar vinyl monomer copolymers and olefin homopolymers, prepared from the compound of formula (II) of claim 1, having general formula (I):
- wherein:
- palladium is in oxidation state +2;
- the dashed lines indicate coordination of palladium by the two nitrogen atoms;
- R1 is selected between hydrogen and methyl;
- R2 is selected between methyl and isopropyl;
- n is an integer from 1 to 4;
- X is selected between chloride and acetonitrile, and when is X = CH3CN a monovalent counter-anion Y is present to balance the charge of palladium.
Dependencies are inferred from the claim text.