Catalyst component and catalyst for ethylene polymerization or copolymerization
A catalyst and copolymerization technology, which is used in the field of catalyst components and catalysts for ethylene polymerization or copolymerization, and can solve the problems of catalysts such as poor sensitivity to hydrogen adjustment, low activity, and wide particle size distribution of polymers.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0042] 1. Preparation of catalyst components
[0043] Under the protection of nitrogen, 4.8 grams of magnesium chloride, 90 milliliters of toluene, 4.0 milliliters of epichlorohydrin, 12.5 milliliters of tributyl phosphate, and 0.5 ml of ethanol were added to the reactor. Under the conditions of stirring at 450 rpm and temperature of 60°C, After reacting for two hours, add 1.5 g of titanium trichloride and 1.4 g of phthalic anhydride, continue the reaction for one hour, lower the temperature to -28°C, add 56 ml of titanium tetrachloride dropwise, gradually increase the temperature to 85°C, and keep the temperature constant for one hour. The mother liquor is filtered off, washed with an inert diluent toluene and organic solvent hexane for multiple times, and then dried to obtain a solid A containing magnesium / titanium.
[0044] Add 10ml tetrabutoxytitanium and 10ml tetrahydrofuran to the dissolving kettle, add 1g of titanium trichloride after stirring uniformly, and dissolve the tit...
Embodiment 2
[0050] Add 5ml of tetrabutoxytitanium and 10ml of tetrahydrofuran to the dissolving kettle, add 1g of titanium trichloride after stirring evenly, and dissolve at a stirring speed of 450rpm to form a titanium compound solution D.
[0051] In the reactor, 11 grams of the solid A prepared in Example 1 was added, 100 ml of isopentane was added, and 10 ml of the titanium compound solution D was added dropwise under the conditions of stirring at 200 rpm and the temperature of 10°C. React for one hour at room temperature, filter off the solution, and wash twice with hexane, then add 60ml isopentane and 3.5ml diethylaluminum chloride solution with a volume concentration of 26.43% to react for one hour, then evaporate and dry to obtain a particulate catalyst The solid component E 15.5 g, which contains 1.80% by weight of titanium, 13.56% by weight of Mg, 0.257% by weight of aluminum, and 28.33% by weight of tetrahydrofuran.
[0052] The polymerization evaluation conditions were the same as ...
Embodiment 3
[0054] Add 3ml of tetrabutoxytitanium and 10ml of tetrahydrofuran to the dissolving kettle, add 1g of titanium trichloride after stirring uniformly, and dissolve at a stirring speed of 450rpm to form a titanium compound solution F.
[0055] In the reactor, 11 g of the solid A prepared in Example 1 was added, 100 ml of isopentane was added, and 10 ml of the titanium compound solution F was added dropwise under the conditions of stirring at 200 rpm and the temperature of 10°C. React for one hour at room temperature, filter off the solution, and wash twice with hexane, then add 60ml isopentane, 3.5ml volume concentration of 26.43% monochlorodiethylaluminum solution and react for one hour, then dry by evaporation to obtain a granular solid Substance component G14.9 g, which contains 1.82% by weight of titanium, 12.75% by weight of magnesium, 0.55% by weight of aluminum, and 27.79% by weight of tetrahydrofuran.
[0056] The polymerization evaluation conditions were the same as in Exampl...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More