Methacrylic Acid → Iso-butyl methacrylate methyl methacrylate methacrylic acid

Beteiligte Stoffe

Reaktionsschritte

By the same method and under the same reaction conditions as in Reference Example 4, the dispersing medium was changed from kerosene to ISOPAR-E (an alkane-type solvent, made by Esso Corporation, U.S.A.), and 78.5 g of iso-butyl methacrylate, 15 g of methyl methacrylate, 5.6 g of methacrylic acid (the mole ratio of the three monomers being 5.5:1.5:3), 1 g of benzoyl peroxide and 1 ml of n-dodecyl mercaptan were reacted in 350 ml of the dispersing medium to afford 107 g of iso-butyl methacrylate-methyl methacrylate-methacrylic acid copolymer. Yield 90%. Acid value 169.6. [η]MC25°C. =0.232.

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