Methacrylic Acid → Methacrylic acid ethylene oxide

HRID 2066355Notes

Reaction equation

HRID 2066355 reaction equation
[Na:1].[CH2:2]1[O:4][CH2:3]1.[C:5]([OH:10])(=[O:9])[C:6]([CH3:8])=[CH2:7].[CH2:11]=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.[C:19]([O:23][CH2:24][CH2:25][CH2:26][CH3:27])(=[O:22])[CH:20]=[CH2:21].S(OOS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+]>O>[CH:11]([CH2:7][C:6](=[CH2:8])[C:5]([OH:10])=[O:9])=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.[C:19]([O:23][CH2:24][CH2:25][CH2:26][CH3:27])(=[O:22])[CH:20]=[CH2:21].[Na:1].[C:5]([OH:10])(=[O:9])[C:6]([CH3:8])=[CH2:7].[CH2:3]1[O:4][CH2:2]1

Participants

9

Reactant 6

HCID 4093Methacrylic Acid2×HCID 6354Ethylene OxideHCID 7501StyreneHCID 8846Butyl AcrylateHCID 62648Ammonium Persulfate2×HCID 5360545Sodium

Product 2

HCID 21880491Methacrylic acid ethylene oxideHCID 86591398Styrene-methacrylic acid butyl acrylate sodium

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
75 °C

Procedure

Into a reaction vessel equipped with a stirring rod and a thermometer, 683 parts of water, 16 parts of sodium salt of sulfuric acid ester of ethylene oxide adduct of methacrylic acid, Eleminol RS-30 (manufactured by Sanyo Chemical Industries Ltd.), 83 parts of styrene, 83 parts of methacrylic acid, 110 parts of butyl acrylate, and 1 part of ammonium persulfate were loaded, and then stirred at 400 rpm for 15 minutes to thereby obtain a white emulsion. The emulsion was heated to a system temperature of 75° C. and was allowed to react for 5 hours. Then, 30 parts of a 1% by volume aqueous ammonium persulfate solution was added to the reaction mixture, followed by aging at 75° C. for 5 hours, to thereby obtain an aqueous dispersion (resin fine particle dispersion liquid) of vinyl resin (a copolymer of styrene-methacrylic acid-butyl acrylate-sodium salt of sulfate ester of methacrylic acid-ethylene oxide adduct). The volume-average particle diameter of the resin fine particle dispersion liquid thus obtained, which was measured using a particle size distribution analyzer (LA-920 manufactured by Horiba, Ltd.), was 42 nm.

Workup

  1. customInto a reaction vessel equipped with a stirring rod
  2. customto thereby obtain a white emulsion
  3. customto react for 5 hours
  4. waitby aging at 75° C. for 5 hours

Sources & evidence

ORD record
ord-30f7c1e5df3f4a7f90dad803e3047a74
Source dataset
uspto-grants-2012_10
Patent number
US08293442B2

Reaction notes

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