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Maleic anhydride

Manufactured by Tokyo Chemical Industry
Sourced in Japan

Maleic anhydride is a chemical compound used in various industrial processes. It is a white, crystalline solid with a distinctive odor. Maleic anhydride serves as a raw material in the production of various chemical intermediates and polymers.

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5 protocols using maleic anhydride

1

Synthesis of Furan-Based Polymer Composites

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Furan, maleic anhydride, 2-furoyl chloride (FC) and 2-aminoethanol were purchased by Tokyo Chemical Industry Co., Ltd, Tokyo, Japan. Dibutyltin dilaurate (DBTDL), hexamethylene diisocyanate (HDI), graphite, 2-hydroxyethyl methacrylate (HEMA), poly (ethylene glycol) methyl ether methacrylate Mn300 (PEGMMA) and 1,1′-(methylenedi-4,1-phenylene)bismaleimide (BM) were purchased from Sigma-Aldrich Korea Ltd, Yong-In, Korea. For the solvent, tetrahydrofuran (THF), methylene chloride (MC), n-hexane, chloroform, N,N′-dimethylformamide (DMF), methanol and toluene were purchased from Daejung Chemical & Materials Co., Ltd, Si-Heung, Korea. All of these materials were used as received. Azobisisobutyronitrile (AIBN) from Junsei Chemical Co., Ltd, Chuo-ku, Tokyo was used after the recrystallization process.
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2

Synthesis and Characterization of Copolymer (C3)

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Example 3

In a 300 ml flask equipped with a mechanical stirrer and a nitrogen introduction pipe, 88.37 g of LINEALENE 18 (manufactured by Idemitsu Co., Ltd.) and 44.62 g of maleic anhydride (manufactured by Tokyo Chemical Industry Co., Ltd.) were poured and dissolved in nitrogen at 150° C. After that, 0.42 g of di-t-butyl hydroperoxide was added little by little and reacted for five hours at 200° C. It was allowed to cool, and then the obtained reaction product was dissolved in 200 g of MEK and a solvent was removed by an evaporator. The obtained, solid was dried overnight in a vacuum dryer at 80° C., and a copolymer (C3) was obtained.

In a 70 ml mayonnaise jar (M-70), 6 g of the copolymer (C8), 0.99 g of zinc hydroxide (II), 26 g of a 25% ammonia aqueous solution, and 20 g of glass beads having 1 mm diameter were poured and dispersed and stirred for twelve hours by Skandex, impurities were removed by a nylon mesh of 200 mesh, and a coating agent Y3 was obtained,

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3

Synthesis and Characterization of Copolymer Coating Agent

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Example 2

In a 300 ml flask equipped with a mechanical stirrer and a nitrogen introduction pipe, 78.55 g of LINEALENE 14 (manufactured by Idemitsu Co., Ltd.) and 50.99 g of maleic anhydride (manufactured by Tokyo Chemical Industry Co., Ltd.) were poured and dissolved in nitrogen at 150° C. After that, 0.49 g of di-t-butyl hydroperoxide was added little by little and reacted for five hours at 200° C. It was allowed to cool, and then the obtained reaction product was dissolved in 200 g of MEK and the solvent was removed by an evaporator. The obtained solid was dried overnight in a vacuum dryer at 80° C., and a copolymer (C2) was obtained.

In a 70 ml mayonnaise jar (M-70), 6 g of the copolymer (C6), 0.70 g (equivalent amount to acid value of the copolymer) of zinc carbonate (II), 19 g of a mixed solvent (toluene/ethanol/water=16.8/4.2/0.5), and 20 g of glass beads having 1 mm diameter were poured and dispersed and stirred for twelve hours by Skandex. After that, aging processing was performed for three hours in an oven at 80° C., impurities were removed by a nylon mesh of 200 mesh, and a coating agent Y2 was obtained.

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4

Copolymer Synthesis and Coating Agent Formulation

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Example 4

In a 300 ml flask equipped with a mechanical stirrer and a nitrogen introduction pipe, 49.99 g of 1-docosene and 20.65 g of maleic anhydride (manufactured by Tokyo Chemical Industry Co., Ltd.) were poured and dissolved in nitrogen at 150° C. After that, 0.20 g of di-t-butyl hydroperoxide was added little by little and reacted for five hours at 200° C. It was allowed to cool, and then the obtained reaction product was dissolved in 200 g of MEK and the solvent was removed by an evaporator. The obtained solid was dried overnight in a vacuum dryer at 80° C., and a copolymer (C4) was obtained.

In a 70 ml mayonnaise jar (M-70), 6 g of the copolymer (G1), 5.22 g of (equivalent amount to acid value of the copolymer) of zinc (III) acetylacetonate, 31 g of a mixed solvent toluene/ethanol/water=16.8/4.2/0.5), and 20 g of glass beads having 1 ram diameter were poured and dispersed and stirred for twelve hours by Skandex, aging processing was performed for three hours in an oven at 80 impurities were removed by a nylon mesh of 200 mesh, and a coating agent Y4 was obtained.

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5

Hexacosene-Maleic Anhydride Copolymerization

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Example 5

In a 300 ml flask equipped with a mechanical stirrer and a nitrogen introduction pipe, 59.08 g of 1-hexacosene and 20.65 g of maleic anhydride (manufactured by Tokyo Chemical Industry Co., Ltd.) were poured and dissolved in nitrogen at 150° C. After that, 0.20 g of di-t-butyl hydroperoxide was added little by little and reacted for live hours at 200° C. It was allowed to cool, and then the obtained reaction product was dissolved in 200 g of MEK and the solvent was removed by an evaporator. The obtained solid was dried overnight in a vacuum dryer at 80° C., and a copolymer (C5) was obtained.

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