Methacrylic Acid → Methacrylic Acid

HRID 2224009Notes

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.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:5]([O:10][CH2:11][CH2:12][CH2:13][CH3:14])(=[O:9])[CH:6]=[CH2:7].[Na:1].[CH2:3]1[O:4][CH2:2]1.[C:5]([OH:10])(=[O:9])[C:6]([CH3:8])=[CH2:7]

Participants

Conditions

Temperature: 75 °C

Procedure

In a reactor equipped with a stirring rod and a thermometer were placed 683 parts of water, 11 parts of a sodium salt of sulfuric acid ester of ethylene oxide adduct of methacrylic acid ELEMINOL RS-30 (trade name, available from Sanyo Chemical Industries, Ltd.), 138 parts of styrene, 138 parts of methacrylic acid and 1 part of ammonium persulfate, and the mixture was stirred at 400 rpm for 15 minutes to yield a white emulsion. The emulsion was heated to an inner temperature of 75° C., followed by reaction for 5 hours. The reaction mixture was further treated with 30 parts of a 1% aqueous solution of ammonium persulfate, was aged at 75° C. for 5 hours and thereby yielded an aqueous dispersion [Fine Particle Dispersion 6] of a vinyl resin (a copolymer of styrene-methacrylic acid-butyl acrylate-sodium salt of sulfuric acid ester of ethylene oxide adduct of methacrylic acid).

Workup

customIn a reactor equipped with a stirring rod
customto yield a white emulsion
customfollowed by reaction for 5 hours

Sources & evidence

ORD record: ord-8c41a0b2ac2043af85b83e387b1a8b4b
Source dataset: uspto-grants-2008_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07378213B2

Reaction notes

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