Polymerization catalyst comprising amidine ligand

Details Polymerization catalyst comprising amidine ligand Polymerization catalyst comprising amidine ligand

2011-06-07

2011-06-07

Choi, Ling-Siu (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

active

07956140

ABSTRACT:
The invention relates to a process for the preparation of a polymer comprising at least one aliphatic or aromatic hydrocarbyl C2-20olefin in the presence of an ionic catalyst, comprising an organometallic compound and an activator, and optionally a scavenger.

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International Search Report.
G. Chandra et al; “Amido-derivatives of Metals and Metalloids. Part X.1Reactions of Titanium(IV), Zirconium(IV) and Hafnium(IV) Amides with Unsaturated Substrates, and Some Related Experiments with Amides of Boron, Silicon, Germanium, and Tin(IV)”; Journal of the Chemical Society, Section A: Inorganic, Physical and Theoretical Chemistry, Chemical Soceity, Letchworth, GB, vol. 15, 1970, pp. 2550-2558.
Guilhem Rousselet et al; “Cooper(I)-Induced Addition of Amines to Unactivated Nitriles: The First General One-Step Synthesis of Alkyl Amidines”; Tetrahedron Letters, vol. 34, No. 40, Oct. 1, 1993.

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