Polymerization methods using the catalysts

Details Polymerization methods using the catalysts Polymerization methods using the catalysts

2011-01-11

2011-01-11

Choi, Ling-Siu (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

active

07868105

ABSTRACT:
Provided is a method of preparing a cyclic olefin polymer by addition polymerization of a cyclic olefin monomer, the method including contacting a metal catalyst complex represented by Formula 1 below with a cyclic olefin monomer represented by Formula 2 below:in-line-formulae description="In-line Formulae" end="lead"?[M(L1)x(L′2)y(L3)z]a[Ani]b  <Formula 1>in-line-formulae description="In-line Formulae" end="tail"?wherein M is a Group X metal; [M(L1)x(L′2)y(L3)z] is a cationic complex; L1is an anionic hydrocarbyl-containing ligand; L′2is a neutral ligand; L3is an N-heterocyclic carbene ligand; [Ani] is an anion capable of weakly coordinating with the metal M; x is 1 or 2; y is 0 to 4; z is 1 or 2; 2≦x+y+z≦6; a and b are respectively the number of cations and the number of anions capable of weakly coordinating with the metal M and are each a number of 1-10 which is used to satisfy the net charge balance of the metal catalyst complex, and wherein for each of L1, L′2, and L3, when a plurality of ligands are present in a molecule of the metal catalyst complex, the ligands may be the same or different, andwherein m is an integer of 0 to 4; and R7, R′7, R″7, and R″′7are each independently a polar functional group or a nonpolar functional group.According to the method of the present invention, a high molecular weight cyclic olefin addition polymer can be produced in a high yield even when using a polar functional group-containing cyclic olefin monomer. A polymer produced using the method shows good thermal stability.

REFERENCES:
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patent: 6455650 (2002-09-01), Lipian et al.
Janiak, C. et al., “Metal catalysts for the vinyl polymerization of norbornene”, Journal of Molecular Catalysis A: Chemical, 166 (2001), pp. 193-209.
Li et al., “Synthesis and evaluation of substituted pyrazoles palladium(II) complexes as ethylene polymerization catalysts”, Journal of Organometallic Chemistry, 660 (2002), pp. 108-115.
Koprowski, M. et al., “Iminophosphine Palladium Complexes in Catalytic Stille Coupling Reactions: From Monomers to Dendrimers”, Organometallics, 21 (2002), pp. 4680-4687.
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