Preparation method of low-entanglement ultrahigh molecular weight polyolefin

Example 1

Purge the reaction device with high-purity nitrogen to remove air and water in the reaction device. 900 μmol of iron acetylacetonate / pyridine diimide catalyst (post transition metal catalyst) was dissolved in 10 ml of toluene (90 μmol / ml), and 0.9 μmol of vinyl trimethoxysilane was added and stirred for 1 h. After the catalyst component solution is monitored by laser particle size, heterogeneous catalyst component particles with a radius of 350 nm can be formed. Adjust the slurry polymerization reactor to 30°C, add 400ml of toluene, add 1ml of the above catalyst component solution, stir for 1min, 450μmol of triethylboron (the molar ratio of the cocatalyst to the catalyst component is 5), 1-octane Olefin (25bar), polymerize for 15min. The polyoctene is measured by a rotor rheometer at 160°C to determine the modulus versus time curve, and the initial storage modulus and the maximum storage modulus (the modulus when the storage modulus does not change with the test ti

Example 2

Purge the reaction device with high-purity nitrogen to remove air and water in the reaction device. 900 μmol of iron acetylacetonate / pyridine diimide catalyst (post transition metal catalyst) was dissolved in 10 ml of toluene (90 μmol / ml), and 0.9 μmol of vinyl trimethoxysilane was added and stirred for 1 h. After the catalyst component solution is monitored by laser particle size, heterogeneous catalyst component particles with a radius of 350 nm can be formed. Adjust the slurry polymerization reactor to 30°C, add 400ml of toluene, add 1ml of the above catalyst component solution, stir for 1min, 450μmol of triethylboron (the molar ratio of the cocatalyst to the catalyst component is 5), 1-octane Olefin (25bar), polymerize for 15min. The polyoctene is measured by a rotor rheometer at 160°C to determine the modulus versus time curve, and the initial storage modulus and the maximum storage modulus (the modulus when the storage modulus does not change with the test ti

Example 3

Purge the reaction device with high-purity nitrogen to remove air and water in the reaction device. 900 μmol of iron acetylacetonate / pyridine diimide catalyst (post transition metal catalyst) was dissolved in 10 ml of toluene (90 μmol / ml), and 0.9 μmol of vinyl trimethoxysilane was added and stirred for 1 h. After the catalyst component solution is monitored by laser particle size, heterogeneous catalyst component particles with a radius of 350 nm can be formed. Adjust the slurry polymerization reactor to 30°C, add 400ml of toluene, add 1ml of the above catalyst component solution, stir for 1min, 450μmol of triethylboron (the molar ratio of the cocatalyst to the catalyst component is 5), 1-octane Olefin (25bar), polymerize for 15min. The polyoctene is measured by a rotor rheometer at 160°C to determine the modulus versus time curve, and the initial storage modulus and the maximum storage modulus (the modulus when the storage modulus does not change with the test ti