198147-61-4

Upstream product

• 75-78-5 dimethylsilicon dichloride 
• 159531-97-2 2-methyl-4-phenyl indene 
• 198147-64-7 2-methyl-7-phenylindenyllithium 
• 153733-75-6 2-methyl-7-phenyl-1H-indene 

Downstream Products

• 681805-96-9 dimethyl(2-methyl-4-phenylindenyl)(2-(2-(5-methyl)-furyl)-4-phenyl-indenyl)silane 
• 681805-98-1 dimethyl(2-methyl-4-phenyl-indenyl)(2-phenyl-4-phenyl-indenyl)silane 
• 681806-06-4 dimethyl(2-methyl-4-phenylindenyl)(2-(2-(5-methyl)thienyl)-4-phenylindenyl)silane 

Relevant academic research and scientific papers

Asymmetric polypropylene catalysts

This invention relates to unsymmetrical metallocenes, catalyst systems therefrom and their use to make highly isotactic polypropylene.

NOVEL LIGAND COMPOUND, PREPARATION METHOD THEREFOR, TRANSITION METAL COMPOUND, AND PREPARATION METHOD THEREFOR

The present invention relates to a novel ligand compound, a preparation method thereof, a transition metal compound including the ligand compound, and a preparation method thereof. The ligand compound of novel structure according to the present invention

Metallocene compounds, processes for the production of olefin polymers using catalysts containing the compounds, and olefin polymers produced by the processes

Metallocene compounds represented by the following general formula (1): YqKLMX2??(1) wherein M, Y, q, L and X are each as defined in the Specification.

CATALYST FOR POLYOLEFIN PRODUCTION AND PROCESS FOR PRODUCING POLYOLEFIN

A catalyst component for polyolefin production catalysts comprising a metallocene compound represented by general formula (1) (symbols have the meanings as described in the specification), polyolefin production catalyst containing the component, and metho

Indenyl-amido titanium and zirconium dimethyl complexes: Improved synthesis and use in propylene polymerization

The synthesis of a series of indenyl amido titanium dimethyl complexes, by means of the direct synthesis from the ligand, a 2-fold excess of MeLi, and TiCl4 is reported. The 1H NMR spectra of the complexes show a quartet structure for the metal-bound methyl groups, due to through-metal proton-proton coupling. Coupling of Ti-methyl protons with protons on the Cp ring is also revealed by COSY 2D-NMR. The performance of the Ti complexes in propylene polymerization, including [Me2Si(Me4C5)(t-BuN)]TiMe2 (1-TiMe2), [Me2Si(Ind) (t-BuN)]TiMe2(2-TiMe2) and six other methyl titanium complexes bearing substituted indenyl ligands, has been investigated with different cocatalysts and at different polymerization temperatures and propylene concentrations. All complexes produce amorphous polypropylene (am-PP). The catalytic activity and molecular weight strongly depend on the substitution of the Cp ring: 2-TiMe2 gives polymers of lower molecular weight, while the presence of a methyl group in position 2 (as in 3-TiMe2) determines up to 4-fold increase in molecular weight. The type of cocatalyst influences mainly the catalytic activity, the borates being better activators than MAO, but also molecular weight, with again the borates giving higher molecular weights than MAO. ΔΔE? 2-TiMe2 = 3.4 kcal mol-1, ΔΔE? 5-TiMe2 = 3.8 kcal mol-1, ΔΔE? 3-TiMe2 = 6.3 kcal mol-1. Even if all the polymers produced are amorphous, 2-TiMe2 and 5-TiMe2 show a microstructure unbalanced towards isotacticity, while 3-TiMe2, 6-TiMe2 and 8-TiMe2 are syndiotactic-enriched. Chiral induction comes mainly from a weak enantiomorphic site control.

Novel octahydro- and tetrahydro-fluorenyl containing C1 symmetric zirconocenes for the stereoregular polymerization of propylene

The synthesis and polymerization behavior of two new asymmetric metallocenes containing partially or fully hydrogenated fluorenyl moieties is reported. The zirconocenes, dimethylsilylene-[η5-1-(2-methyl-4-phenyl)indenyl]-(η 5-9-tetra