Methacrylic Acid → 2-Methylprop-2-enoic acid--butyl prop-2-enoate (1/1)

HRID 1065202Notes

Reaction equation

HRID 1065202 reaction equation
S(OOS([O-])(=O)=O)([O-])(=O)=O.[K+].[K+].[C:13]([OH:18])(=[O:17])[C:14]([CH3:16])=[CH2:15].[C:19]([O:23][CH2:24][CH2:25][CH2:26][CH3:27])(=[O:22])[CH:20]=[CH2:21]>O>[C:13]([OH:18])(=[O:17])[C:14]([CH3:16])=[CH2:15].[C:19]([O:23][CH2:24][CH2:25][CH2:26][CH3:27])(=[O:22])[CH:20]=[CH2:21]

Participants

5

Reactant 3

HCID 4093Methacrylic AcidHCID 8846Butyl AcrylateHCID 24412Potassium Persulfate2×

Product 1

HCID 1599862-Methylprop-2-enoic acid--butyl prop-2-enoate (1/1)

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

To a 2 liter resin kettle was added 260.5 g. water, 40.75 g. Igepal CO-630 sulfonate (24.5% methylene blue activity), and 0.5 g. potassium persulfate. Nitrogen purge was started immediately. To the kettle was being heated to the final temperature, a pre-emulsion was prepared which contained 11.75 g. Igepal CO-630 sulfonate, 130.25 g. water, 0.5 g. potassium persulfate, 134.4 g. methacrylic acid, and 89.6 g. butyl acrylate. The pre-emulsion was placed in a pressure-equalizing addition funnel fitted with a mechanical stirrer. When the kettle temperature was reached, dropwise addition of the pre-emulsion was begun. Although addition was to proceed over 3 hours, the reaction was stopped after 30 minutes because of complete coagulation.

Workup

  1. customNitrogen purge
  2. temperatureTo the kettle was being heated to the final temperature
  3. customa pre-emulsion was prepared which
  4. customThe pre-emulsion was placed in a pressure-equalizing addition funnel
  5. customfitted with a mechanical stirrer
  6. additiondropwise addition of the pre-emulsion
  7. additionAlthough addition
  8. waitthe reaction was stopped after 30 minutes because of complete coagulation

Sources & evidence

ORD record
ord-71bc2b22f6c9448eb0f7b36e03e1d378
Source dataset
uspto-grants-1982_05
Patent number
US04329268

Reaction notes

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