Method of preparing graft copolymer
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United States of America Patent
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Jul 25, 2023
Grant Date -
Jun 3, 2021
app pub date -
Nov 8, 2019
filing date -
Nov 15, 2018
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Abstract
Provided is a method of preparing a graft copolymer, which includes: preparing a liquid maleimide-based monomer; preparing a reaction solution including a diene-based rubber polymer, an aromatic vinyl-based monomer, and a vinyl cyan-based monomer; and adding the liquid maleimide-based monomer and the reaction solution to a reactor and carrying out polymerization. According to the preparation method of the present invention, the amount of the maleimide-based monomer involved in the polymerization can be increased, and the color characteristics, glass transition temperature, and softening temperature of the graft copolymer are improved.
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