Preparation method of organic zinc catalyst and poly(alkylene carbonate) resin
First Claim
1. A preparation method of an organic zinc catalyst, the preparation method comprising:
- providing a zinc precursor surface-treated with a dispersant; and
reacting the surface-treated zinc precursor with a dicarboxylic acid having 3 to 20 carbon atoms to form a zinc dicarboxylate-based catalyst,wherein the reaction step is performed under a condition at which the number of moles of the dicarboxylic acid present in a reaction system is larger than that of the zinc precursor throughout the entire reaction step,wherein the dispersant is an anionic surfactant.
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Abstract
The present invention relates to a preparation method of an organic zinc catalyst capable of preparing an organic zinc catalyst having a finer and more uniform particle size and more improved activity during a polymerization process for preparing a poly(alkylene carbonate) resin, and a preparation method of a poly(alkylene carbonate) resin using the organic zinc catalyst. The preparation method of an organic zinc catalyst includes reacting a zinc precursor and a dicarboxylic acid in the presence of a dispersant to form a zinc dicarboxylate-based catalyst, wherein a reaction step is performed under a condition at which the number of moles of the dicarboxylic acid present in a reaction system is larger than that of the zinc precursor throughout the entire reaction step.
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Citations
13 Claims
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1. A preparation method of an organic zinc catalyst, the preparation method comprising:
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providing a zinc precursor surface-treated with a dispersant; and reacting the surface-treated zinc precursor with a dicarboxylic acid having 3 to 20 carbon atoms to form a zinc dicarboxylate-based catalyst, wherein the reaction step is performed under a condition at which the number of moles of the dicarboxylic acid present in a reaction system is larger than that of the zinc precursor throughout the entire reaction step, wherein the dispersant is an anionic surfactant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification