Methacrylic Acid → Methacrylic acid ethylene oxide

HRID 855475Notes

Reaction equation

HRID 855475 reaction equation
[Na:1].[CH2:2]1[O:4][CH2:3]1.[C:5]([OH:10])(=[O:9])[C:6]([CH3:8])=[CH2:7].[C:11]([OH:16])(=[O:15])[C:12]([CH3:14])=[CH2:13].[C:17]([O:21][CH2:22][CH2:23][CH2:24][CH3:25])(=[O:20])[CH:18]=[CH2:19].S(OOS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+]>O>[C:5]([OH:10])(=[O:9])[C:6]([CH3:8])=[CH2:7].[C:17]([O:21][CH2:22][CH2:23][CH2:24][CH3:25])(=[O:20])[CH:18]=[CH2:19].[Na:1].[CH2:3]1[O:4][CH2:2]1.[C:11]([OH:16])(=[O:15])[C:12]([CH3:14])=[CH2:13]

Participants

8

Reactant 5

HCID 4093Methacrylic AcidHCID 8846Butyl AcrylateHCID 62648Ammonium Persulfate2×HCID 5360545SodiumHCID 21880491Methacrylic acid ethylene oxide

Product 2

HCID 21880491Methacrylic acid ethylene oxideHCID 86596291HCID 86596291, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
75 °C

Procedure

To a reaction vessel equipped with a stirrer and a thermometer, 683 parts of water, 11 parts of sodium salt of the sulfuric acid ester of methacrylic acid ethylene oxide adduct (ELEMINOL RS-30, manufactured by Sanyo Chemical Industries, Ltd.), 166 parts of methacrylic acid, 110 parts of butyl acrylate, and 1 part of ammonium persulphate were poured, and stirred at 3,800 rpm for 30 minutes to obtain a white emulsion. The white emulsion was heated, the temperature in the system was raised to 75° C., and the reaction was performed for 4 hours. Next, 30 parts of an aqueous solution of 1% ammonium persulphate was further added, and the reaction mixture was matured at 75° C. for 6 hours to obtain an aqueous dispersion liquid of a vinyl resin (copolymer of methacrylic acid-butyl acrylate-sodium salt of the sulfuric acid ester of methacrylic acid ethylene oxide adduct) [particulate emulsion 1]. The volume average particle diameter of the [particulate emulsion 1] measured by means of LA-920 was 110 nm. After drying a part of [particulate emulsion 1] and isolating the resin, the glass transition temperature (Tg) of the resin was 58° C. and the weight average molecular weight was 130,000.

Workup

  1. customTo a reaction vessel equipped with a stirrer
  2. customto obtain a white emulsion
  3. temperatureThe white emulsion was heated
  4. waitthe reaction was performed for 4 hours
  5. waitthe reaction mixture was matured at 75° C. for 6 hours

Sources & evidence

ORD record
ord-c2d00b9a7603459bac47c7c316a0e1c6
Source dataset
uspto-grants-2007_08
Patent number
US07261989B2

Reaction notes

Loading…