US 7,842,829 B2 · Catalyst systems based on aromatic diimine ligands

Abstract

The present invention discloses the use of aromatic diamine ligands to prepare catalyst systems suitable for the oligomerization or polymerization of ethylene and alpha-olefins.

Drawings

Claims5

Dependent claims

A catalyst component represented by the formula

wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 are each independently selected from hydrogen, unsubstituted or substituted hydrocarbyl, or inert functional group and two or more of groups can be linked together to form further ring or rings;
R7 and R8 together, and R9 and R10 together, are joined to form naphthyl groups;
wherein M is Ti, Zr, Hf, V, Cr, Mn, Fe, Co, or Ni;
X is a halogen and n is the valence of M.

1 more element

Dependencies are inferred from the claim text.

Abstract

The present invention discloses the use of aromatic diamine ligands to prepare catalyst systems suitable for the oligomerization or polymerization of ethylene and alpha-olefins.

Drawings

Claims5

Dependent claims

A catalyst component represented by the formula

wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 are each independently selected from hydrogen, unsubstituted or substituted hydrocarbyl, or inert functional group and two or more of groups can be linked together to form further ring or rings;
R7 and R8 together, and R9 and R10 together, are joined to form naphthyl groups;
wherein M is Ti, Zr, Hf, V, Cr, Mn, Fe, Co, or Ni;
X is a halogen and n is the valence of M.

1 more element

Dependencies are inferred from the claim text.

Description6,157 words

Summary2,196 words

#This application claims the benefit of PCT/EP2006/063990, filed Jul. 6, 2006, which claims priority from EP 05106165.3, filed Jul. 7, 2005.

#The present invention relates to the field of single site catalyst systems based on diimine ligands and suitable for oligomerising or polymerising ethylene and alpha-olefins.

#There exists a multitude of catalyst systems available for polymerising or oligomerising ethylene and alpha-olefins, but there is a growing need for finding new systems capable to tailor polymers with very specific properties. More and more post-metallocene catalyst components based on early or late transition metals from Groups 3 to 10 of the Periodic Table have recently been investigated such as for example those disclosed in Gibson and al. review (Gibson, V. C.; Spitzmesser, S. K., Chem. Rev. 2003, 103, p. 283). But there is still a need to improve either the specificities or the performances of these systems.

Detailed description3,961 words

#In a sealed reactor, 4.32 g (30 mmol, 1 eq) of 2-naphthol, 2.85 g (30 mmol, 1 eq) of (NH4)2SO3 and 50 mL of aqueous ammonia were mixed. The mixture was heated to 150° C., the pressure was raised to 10 bars and the mixture was stirred overnight. The mixture was then cooled down to room temperature.

#The brown solid was filtered, washed with water, and dissolved in a mixture of 30 mL of EtOH, 20 mL of H2O and 7 mL of HCl 37% at a temperature of 70° C. The solution was treated with 1.5 g of charcoal at 70° C. during one hour and then filtered. The aqueous phase was washed with 20 mL of toluene and neutralised by adding 10 mL of aqueous ammonia, followed by extraction with 3×40 mL of toluene at 70° C. The organic phase was washed with 40 mL of water, dried over MgSO4 and concentrated. 3.29 g pink solid were obtained with a yield of 77%.

#1H-RMN (500 MHz, CDCl3) results: δ=3.87 (br s, 2H), 6.98 (dd, 1H), 7.02 (d, 1H), 7.25 (t, 1H), 7.39 (t, 1H), 7.62 (d, 1H), 7.69 (d, 1H), 7.72 (d, 1H).

Catalyst systems based on aromatic diimine ligands

Life of this patent

Abstract

Drawings

Claims5

Catalyst systems based on aromatic diimine ligands

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims5

Description6,157 words

Drawings

Classification14 codes

Life of this patent

Description6,157 words