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US 12,606,646 B2Granted
Method for preparing metallocene supported catalyst
AssigneeLG Chem, Ltd.
InventorsJaehoon Choi, Jung Won Lee, Seungmi Lee, Hyun Jee Kwon, Cheolhwan Jeong, Jonghyun Kim
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Abstract
There is provided a method for preparing a metallocene-supported catalyst that exhibits catalytic activity, and yet, can decrease fine generation, and thus, can minimize fouling and chunk generation, and can stably prepare polyethylene having excellent properties.
Claims13
A method for preparing a metallocene-supported catalyst, comprising:
- pre-treating a carrier with an alkyl aluminum-based compound represented by the following Chemical Formula 1 and a monoether-based compound having aliphatic chains;
- introducing a cocatalyst in the pre-treated carrier and reacting them, to support the cocatalyst in the pre-treated carrier to produce a cocatalyst-supported carrier;
- introducing a metallocene-based catalyst precursor in the cocatalyst-supported carrier and reacting them,
- supporting the metallocene-based catalyst precursor in the cocatalyst-supported carrier:
- and
- introducing an antistatic agent in the carrier in which the metallocene-based catalyst precursor is supported, and reacting them,
- wherein the antistatic agent comprises one or more first antistatic agents selected from the group consisting of ethoxylated alkylamine-based compounds and sulfonic acid-based compounds;
- and one or more second antistatic agents selected from the group consisting of fatty acid ester and fatty acid metal salts:
- Al(R)3 Chemical Formula 1
- wherein, in Chemical Formula 1,
- each R is independently C3-20 branched alkyl.
8 more elements
Dependencies are inferred from the claim text.