Star poly-(methyl)acrylate long-chain ester polymer and preparation method thereof
A technology of long-chain acrylic acid ester and polymer, which is applied in the field of star-shaped polyacrylic acid long-chain ester polymer and its preparation, can solve the problems of complex polymerization method and process, and achieves improved low-temperature fluidity, high molecular weight and low vitrification Effect of transition temperature
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Embodiment 1
[0036] In a refluxed 100ml three-necked flask, nitrogen was introduced to replace oxygen, and 5.1g of lauryl methacrylate and 12.4ml of cyclohexanone were added. After bubbling with high-purity nitrogen for 30 minutes, 65.2 mg CuCl and 124.8 μL PMDETA were added. And continue to stir, after the ligand is fully complexed with cuprous chloride, add 3.26mgCuCl 2 . Continue to feed nitrogen into the system and start heating. When the temperature rises to the reaction temperature of 60° C., add 97.8 μL of initiator EBriB. After reacting for 1.5 hours, 1.2 mL of EGDMA was added, the temperature was raised to 90° C., the reaction was carried out in a nitrogen atmosphere for 9 hours, and the reaction was stopped by rapid cooling. After adding 120ml of tetrahydrofuran to dissolve the reaction product, pass through 110g of alumina to remove copper ions, add to a large amount of methanol precipitant to precipitate the product, repeat twice and vacuum dry to constant weight to obtain th...
Embodiment 2
[0042] In Example 1, the temperature was raised to 60° C., the initiator EBriB was added and reacted for 2 hours, and then EGDMA was added, and the rest were the same as Example 1.
Embodiment 3
[0044] In Example 1, after adding EGDMA and raising the temperature to 90° C., the reaction was carried out in a nitrogen atmosphere for 6 hours, and the rest were the same as Example 1.
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