Methacrylic Acid → Methacrylic acid ethylene oxide

HRID 2114534Notes

Reaction equation

HRID 2114534 reaction equation
[Na:1].[C:2]([OH:7])(=[O:6])[C:3]([CH3:5])=[CH2:4].[CH2:8]1[O:10][CH2:9]1.[CH2:11]=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.[C:19]([OH:24])(=[O:23])[C:20]([CH3:22])=[CH2:21].S(OOS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+]>O>[CH:11]([CH2:4][C:3](=[CH2:5])[C:2]([OH:7])=[O:6])=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.[Na:1].[C:19]([OH:24])(=[O:23])[C:20]([CH3:22])=[CH2:21].[CH2:9]1[O:10][CH2:8]1

Participants

8

Reactant 5

HCID 4093Methacrylic AcidHCID 7501StyreneHCID 62648Ammonium Persulfate2×HCID 5360545SodiumHCID 21880491Methacrylic acid ethylene oxide

Product 2

HCID 21880491Methacrylic acid ethylene oxideHCID 86592924Styrene-methacrylic acid sodium

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

683 parts of water, 11 parts of a sodium salt of a sulfate ester of an adduct of ethylene oxide methacrylate (ELEMINOL RS-30: manufactured by Sanyo Chemical Industries, Ltd.), 138 parts of styrene, 138 parts of methacrylic acid, and 1 part of ammonium persulfate were stirred for 15 minutes at 400 r.p.m. in a reaction vessel equipped with a stirring rod and a thermometer to obtain a white emulsion. The emulsion was heated until the temperature in the system reached 75° C., and allowed to react for five hours. The reactant was further added with 30 parts of 1% ammonium persulfate aqueous solution, and aged at 75° C. for five hours to obtain an aqueous dispersion of a vinyl resin (copolymer of styrene-methacrylic acid-sodium salt of sulfate ester of an adduct of ethylene oxide methacrylate) [fine particle dispersion 1]. The volume average particle diameter of [fine particle dispersion 1]measured by a LA-920 was 0.14 μm. A part of [fine particle dispersion 1]was dried to isolate the resin component. The Tg of the resin component was 152° C.

Workup

  1. customin a reaction vessel equipped with a stirring rod
  2. customa thermometer to obtain a white emulsion
  3. temperatureThe emulsion was heated until the temperature in the system
  4. customreached 75° C.
  5. customto react for five hours

Sources & evidence

ORD record
ord-6d506a425cc94c0cbd36c2890557d023
Source dataset
uspto-grants-2008_10
Patent number
US07435521B2

Reaction notes

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