METHOD FOR PREPARING POLYMER, AND OBTAINED POLYMER
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United States of America Patent
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Issued Date -
Jul 11, 2024
app pub date -
Mar 21, 2022
filing date -
Apr 28, 2021
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Abstract
A method for preparing polymer includes the steps of enabling olefin and unsaturated carboxylate be subjected to a polymerization reaction in the presence of a catalyst to generate an olefin-unsaturated carboxylate polymer. The catalyst has a primary catalyst and optionally a cocatalyst. The primary catalyst has at least one complex represented by formula I, formula I′, or formula I″. By selecting a reacted unsaturated carboxylate monomer, catalysts, and a suitable polymerization process, a spherical and/or sphere-like polymer having good shape is directly prepared without subsequent processing steps such as granulation, and the obtained polymer product is not prone to fouling in a reactor and is convenient for transportation.
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