Mitsubishi Rayon Company, Limited

Daisuke Nonaka

Mitsuhiro Matsuo

Hisaaki Yoshimura

Masahiro Hayashida

Yusuke Morita

There is provided a method capable of producing a methacrylic-based polymer excellent in pyrolysis resistance and excellent in fabricability in a high productivity. The method for producing a methacrylic-based polymer includes the following steps (1) and (2): step (1) of using a complete mixing reactor (A) to thereby obtain the first syrup, including specific steps; step (2) of using a reaction apparatus (D) including a plug flow mixer (B) and a plug flow reactor (C) to thereby obtain the second syrup, including specific steps.

Method for producing methacrylic-based polymer

Disclosed is an apparatus for producing a high-quality methacrylic polymer with good productivity, comprising a complete mixing type reactor, tubular reactorsandwhich have been serially connected, and a volatile removing instrument, wherein at least two of the tubular reactorsandare connected via a coolerfor cooling the reaction mixture. It is preferable that the cooleris a multitubular cooler and the tubular reactorsandare plug flow reactors.

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Otake, Japan

Daisuke Nonaka