Methacrylic Acid → Methyl 2-methylprop-2-enoate;2-methylprop-2-enoic acid

HRID 485647Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 485647
[C:1]([O:6][CH3:7])(=[O:5])[C:2]([CH3:4])=[CH2:3].[C:8]([OH:13])(=[O:12])[C:9]([CH3:11])=[CH2:10].C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>O1CCOCC1>[C:1]([O:6][CH3:7])(=[O:5])[C:2]([CH3:4])=[CH2:3].[C:8]([OH:13])(=[O:12])[C:9]([CH3:11])=[CH2:10]

Komponenten

5

Edukt 3

HCID 4093Methacrylic AcidHCID 6658Methyl MethacrylateHCID 7187Benzoyl Peroxide

Produkt 1

HCID 65310Methyl 2-methylprop-2-enoate;2-methylprop-2-enoic acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

9.0 g of methyl methacrylate, 0.86 g of methacrylic acid (charging ratio by mole=9/1), and 50 mg of benzoyl peroxide were dissolved in 50 g of dioxane, followed by heating the solution at 80° C. for 4 hours with agitation while purging with nitrogen and subsequently charging into a large amount of water. The resulting polymer was dissolved in a small amount of acetone and dropped into a large amount of a methanol/water mixture for re-precipitation, followed by drying in vacuo to obtain methyl methacrylate/methacrylic acid copolymer (molecular weight≈5,000).

Aufarbeitung

  1. customwhile purging with nitrogen
  2. dissolutionThe resulting polymer was dissolved in a small amount of acetone
  3. additiondropped into a large amount of a methanol/water mixture for re-precipitation
  4. customby drying in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-d6ac13ca28234d90bbc1490b4781d099
Quelldatensatz
uspto-grants-1985_08
Patentnummer
US04537855

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