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US 12,503,524 B2Granted
Method for purifying polyalkylaluminoxane-containing solution using hydroxy group-containing compound and catalyst composition using the same
AssigneeLG Chem, Ltd.
InventorsYoon Hee Cho, Ue Ryung Seo, Seung Hyo Kim, Seung Hwan Jung, A Rim Kim, Ki Won Han, Hyo Jung Han
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Abstract
The present invention relates to a method for purifying a polyalkylaluminoxane-containing solution using a hydroxy group-containing compound, a method for producing a catalyst composition using the method, a catalyst composition produced by the production method, and a method for producing an olefin polymer using the catalyst composition.
Claims9
A method for producing a catalyst composition, the method comprising:
- (S1) preparing a polyalkylaluminoxane-containing solution including a polyalkylaluminoxane, a trialkylaluminum, and a hydrocarbon solvent;
- (S2) reacting the polyalkylaluminoxane-containing solution with a hydroxy group-containing compound;
- (S3) filtering a reaction product of Step (S2);
- and
- (S4) mixing a filtrate of Step (S3) and a transition metal compound,
- wherein the hydroxy group-containing compound is one or more selected from the group consisting of 1,3,5-trihydroxybenzene, neopentylglycol, naphthalene-1,5-diol, ethyleneglycol, bisphenol-A, catechol, methylhydroquinone, and 1,2,3-trihydroxybenzene.
3 more elements
Dependencies are inferred from the claim text.