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

HRID 485647

Reaction equation

[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]

Participants

Conditions

Temperature: 80 °C

Procedure

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).

Workup

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

Sources & evidence

ORD record: ord-d6ac13ca28234d90bbc1490b4781d099
Source dataset: uspto-grants-1985_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04537855

Linked notes

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