Aluminium compound and process for producing the same, catalyst for olefin polymer production, and process for producing olefin polymer
A technology of olefin polymers and aluminum compounds, applied in the field of new aluminum compounds and their preparation, can solve the problem of low polymerization activity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0085] Example 1: Preparation of μ-carbonyl·isobutylaluminum (Isobutil-Alminium-μ-Okiso) compound
[0086] A Schneenke tube with a volume of 200 ml was replaced with nitrogen, and 40 ml (0.88 mol / liter, 35 mmol) of tetraisobutyldialumoxane / toluene solution was added thereto. Keep it at room temperature, mix it with magnetic stirring, and at the same time, slowly exhaust the system to make the vacuum degree reach 1.0×10 -3 mmHg. This state was maintained for 4 hours, and then under the same reduced pressure condition, the temperature inside the system was raised to 90° C. with an oil bath and the treatment was continued for 24 hours. At this point a constant amount (5.8 g) was reached, and the following measurements and analyzes demonstrated that the title compound was obtained. use 27 The compound determined by Al-NMR is as expected figure 1 As shown, only one sharp single peak (Singlett) was observed at 68ppm, indicating that the aluminum atom is only in the 5-coordinatio...
Embodiment 2
[0088] Example 2: Preparation of μ-carbonyl·methyl isobutylaluminum (ISOBCHIL-, MECHIL-ALMINIUM-μ-OKISO) compound
[0089] Replace the 200-mL Schneenck tube with nitrogen, add 50 mL (0.88 mol / L, 44 mmol) of tetraisobutyldialuminoxane / toluene solution and 44 mL (1.0 mol / L, 44 mmol) trimethylaluminum / toluene solution. It was kept at room temperature and mixed with magnetic stirring for 24 hours. Then slowly exhaust the system to make the vacuum degree reach 1.0×10 -3 mmHg. This state was maintained for 4 hours, and then under the same reduced pressure condition, the temperature inside the system was brought to 90° C. with an oil bath and the treatment was continued for 48 hours. At this point a constant amount (5.8 g) was reached, and the following measurements and analyzes demonstrated that the title compound was obtained. use 27 As expected, only a sharp single peak can be observed at 68ppm of the compound measured by Al-NMR, which indicates that the aluminum atom is only...
Embodiment 3
[0094] Example 3: Propylene Polymerization
[0095] Fully replace the volume with nitrogen to be 1.0 liter stainless steel autoclave, this autoclave is equipped with stirring device and temperature control device, add 400 milliliters of fully dehydrated and deoxygenated toluene, 0.5 mmol triisobutylaluminum and 1.0 mmol (with aluminum atom Conversion) the μ-carbonyl·methyl isobutylaluminum compound obtained in Example 2, then add 1 μmol of methylenebisindenyl dimethyl zirconium and heat up, at 50°C, the pressure of propylene is 5kg / cm 2 Under the conditions of G, propylene was polymerized for 30 minutes. After the polymerization was completed, the slurry was put into 1 liter of methanol, and the polymer was filtered and dried to obtain 54.7 g of polypropylene. The catalyst activity was 1200 kg-polymer / g-Zr.
PUM
| Property | Measurement | Unit |
|---|---|---|
| melting point | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More