MMA preparation method with isobutene including saturated hydrocarbon

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United States of America Patent

PATENT NO 11434191
APP PUB NO 20210139407A1
SERIAL NO

17076292

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Abstract

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Disclosed is a method for preparing methyl methacrylate (MMA), the method including: (1) separating isobutene containing saturated hydrocarbon (n-butane and iso-butane), via a catalytic distillation process from a stream of C4 hydrocarbons containing butadiene, n-butene, and isobutene; (2) producing methacrolein via a first oxidation reaction of the separated isobutene; (3) producing methacrylic acid via a second oxidation reaction of the produced methacrolein; and (4) esterifying the produced methacrylic acid with methanol. By having a high heat capacity, the amount of nitrogen added is minimized to reduce the size of the reactor and the amount of gas production at a rear end, which has a high economic feasibility due to the effect of reducing investment and investment cost.

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Patent Owner(s)

  • HANWHA TOTAL PETROCHEMICAL CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Ho Sik Daejeon, KR 15 33
Choi, Hyun Chul Yongin-si, KR 17 59
Choi, Yo Han Chungcheongnam-do, KR 27 116
Lee, Jin Suk Seoul, KR 34 138

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