Polymerisation catalyst

Details Polymerisation catalyst Polymerisation catalyst

2008-04-29

2008-04-29

Choi, Ling-Sui (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S348000, C526S317100, C502S103000, C502S152000

Reexamination Certificate

active

11633561

ABSTRACT:
A complex of transition metal Ti, Fe, Co, Ni, Cr, Mn, Ta, Rh, Y, Sc, Ru, Pd, Zr, Hf, V or Nb and a mono-, bi-, tri-, or tetra-dentate ligand, wherein at least one of the donor atoms of the ligand is a nitrogen atom N with a 5-membered heterocyclic substituent joined to the N by a carbon atom. The complex is preferably Formula (I) wherein R5—N-G-X1is a bi-, tri, or tetra-dentate ligand, N is joined to G by an imine linkage; G is a bridging group which can contain a third or fourth donor atom; X1is —O or —S if the X1-M bond is covalent, or if the X1-M bond is dative X1is ═S, —PR7R8, —PR8R9, ═NR7, ═NR8, —NR7R8or —NR8R9; R5and R7are 5-membered heterocyclic substituents joined to the nitrogen (or phosphorus) atoms via a carbon atom: R8and R9are hydrocarbyl or heterohydrocarbyl, substituted hydrocarbyl or aryl substituent; X represents an atom or group covalently or ionically bonded to the transition metal M: L is a group datively bound to M, and n is from 0 to 5; q is 1 or 2. The complexes find use as polymerisation catalysts, preferably with an activator, e.g. MAO

REFERENCES:
patent: WO 99/12981 (1999-01-01), None
patent: WO 00/50470 (2000-08-01), None
patent: WO 01/14391 (2001-03-01), None
van Meurs et al., J.Am.Chem.Soc., 127, 9913-9923 (2005).
Dash, B. et al., “Cobalt (II), nickel (II), copper (II), and zinc (II) complexes of Schiff base derived from 4-aryl-2-aminothiazoles and salicyaldehyde”, Chemical Abstracts, vol. 83, No. 4, Jul. 28, 1975.
Pancholi et al., “Ni(II), Cu (II), and Co (II) complexes of Schiff base derived from 2-amino-5methyl-4-phenylthiazole”, Chemical Abstracts, vol. 121, No. 10, Sep. 5, 1994.
Garnovskii, et al., “Competitive coordination in the N-, O-, S-donating ligand sequence: cobalt (II), nickel (II), copper (II), and palladium (II) chelate complexes with o-N-tosylamino (oxy,mercapto)-R-arylidene-4-aminoantipyrine”, Chemical Abstracts, vol. 123, No. 12, Sep. 18, 1995.
Pancholi et al., Manganese (II) complexes of Schiff base derived from substituted 2-amonothiazoles, Chemical Abstracts, vol. 125, No. Sep. 2, 1996.
Mahapatra, B. et al., “Complexes of divalent cobalt ,nickel, copper, iron, manganese, cadmim and mercury with tridentate ONN donor Schiff bases”, Chemical Abstracts, vol. 112, No. 14, Apr. 2, 1990.
Spinu, Cezar et al., “Studies on N-′2-thienylmethylidene!-2-aminothiazole complexes of Fe (II), Co (II), Ni (II), Cu (II), Zn (II) and Cd (II)”, Chemical Abstracts, vol. 135.
Sharma, R.C. et al., “Synthesis and structural studies of Co (II), Ni (II), Zn (II), and Cd(II) metal complexes of 2-hydroxy-5-methylbenzene-1, 3-bis (methylen e-2-aminothiazole)”, Chemical Abstracts, vol. 136.
Meurs et al., J. Am. Chem. Soc. 127, 9913-9923 (2005).

Affiliated with

Also associated with

Rating

Polymerisation catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymerisation catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymerisation catalyst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3954663