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US 9,803,048 B2Granted
Organic zinc catalyst and preparation method thereof
AssigneeLG Chem, Ltd.
InventorsSeong Kyun Kang, Hyun Ju Cho, Sung-Kyoung Kim, Jong Won Lee, Seung Young Park, Hyeon Choi
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Abstract
An organic zinc catalyst and a preparation method thereof are provided. According to the present invention, the organic zinc catalyst has a smaller thickness and a larger surface area to exhibit more improved activity in polymerization for the preparation of a poly(alkylene carbonate) resin.
Claims8
A method of preparing an organic zinc catalyst, the method comprising:
- reacting a zinc precursor and dicarboxylic acid having 3 to 20 carbon atoms to form zinc dicarboxylate-based particles in a liquid medium containing a polar solvent and a non-polar solvent at a volume ratio of 30:70 to 75:25,
- wherein the zinc dicarboxylate-based particles formed by the reaction have an average particle thickness of 30 nm or less and an argon adsorption Brunauer-Emmett-Teller (BET) surface area of 20 m2/g or more.
Dependencies are inferred from the claim text.