Water → Methacrylate maleate

HRID 464476Notes

Reaction equation

HRID 464476 reaction equation
[C:1]1(=[O:7])[O:6][C:4](=[O:5])[CH:3]=[CH:2]1.[C:8]([OH:13])(=[O:12])[C:9]([CH3:11])=[CH2:10].[OH2:14]>C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1.CC(=O)CC>[C:8]([O-:13])(=[O:12])[C:9]([CH3:11])=[CH2:10].[C:4]([O-:6])(=[O:5])/[CH:3]=[CH:2]\[C:1]([O-:7])=[O:14]

Participants

6

Reactant 3

HCID 962WaterHCID 4093Methacrylic Acid3×HCID 7923Maleic Anhydride

Product 1

HCID 86738935Methacrylate maleate

Reagents, catalysts & solvents 2

HCID 6569Methyl Ethyl KetoneSolventHCID 7187Benzoyl PeroxideSolvent

Procedure

The preparation of Example 1 is repeated with the exception that 54 g (0.55 mole) maleic anhydride is copolymerized with 39 g (0.45 mole) methacrylic acid in the presence of 23 g benzoyl peroxide initiator and 95 g 2-butanone (boiling point 80° C.) as solvent, the methacrylic acid is added continuously over a 5-hour period, the refluxing is continued for 10 minutes following the methacrylic acid addition and the copolymer is hydrolyzed by the addition of 210 g water at reflux temperature. A substantially homogeneous methacrylate/maleate copolymer similar to the product of Example 1 is obtained.

Workup

  1. customThe preparation of Example 1
  2. temperatureat reflux temperature

Sources & evidence

ORD record
ord-060b09a383694ac59d0214b86ccfb29b
Source dataset
uspto-grants-1985_10
Patent number
US04547559

Reaction notes

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